The virtual simulation platform for drilling emergency exercises in oil and gas fields uses three-dimensional simulation, three-dimensional interaction, network communication, and other technologies to construct and realize the simulation and 3D interaction of drilling scenes, equipment and facilities, personnel conditions, environmental conditions, accident occurrence, and development process and personnel emergency response process. The system can realize the emergency response simulation exercise of typical drilling accident disasters and complete single-person drills and multi-person joint drills for emergency response. And the simulator platform is able to conduct drill evaluations on trainees’ emergency handling operations, emergency handling, task completion, and related knowledge points and point out problems and deficiencies in the process of drills. Therefore, the platform can be used for drilling workers’ emergency response and rescue teaching training.

About the teacher terminal of the virtual simulation platform for emergency drills
The teacher terminal of this virtual simulation platform for drilling emergency drills in oil and gas fields can provide management and editing of student information, emergency plans, and drill programs. The drill content can be adjusted according to the needs, and the one-click plan modification and drill process generation can be completed.

And after the drill, according to the students’ drill process, it can provide individual and team drill results, and then it can inquire about the reasons for the deduction of points.

The platform system can edit the drill program, support the selection of individual and team drill modes, set drill accident parameters, and generate drill process and evaluation criteria according to the parameter settings. It supports multi-point teaching, and the management of computers participating in the exercise can be realized through the teacher’s terminal.

About the student side of the emergency exercise simulation platform system

On the student side of the system, 3D simulation technology can realize emergency response and rescue training for drilling workers when they face dangerous accidents on site. Provides two exercise modes: individual exercise and team collaboration, which can be used to practice and assess the drilling process. The three-dimensional scene is realistic, the equipment is highly operable, and the environmental sound effects are added to make the simulation process close to reality. The training content is to realize emergency process simulation, risk identification, emergency response, rescue, and escape training according to the industry plan.

The system provides a rich knowledge base for trainers to learn and view relevant knowledge in practice mode and supports multi-person collaborative drills. And it provides training for personnel in various roles on the drilling site.

Advanced Technology in the emergency exercise simulation platform System

The system supports the execution of role AI and can automatically cooperate with trainees to complete the exercise project. It has a good user interaction experience. The equipment can be operated through an interactive interface, and the details are rich.

It has a multi-role information broadcast system, broadcasts the drill process in real-time, and judges whether the emergency response process is correct or not.

The simulation system uses CFD technology to realize model calculations such as gas diffusion and flame combustion and to deduce the accident process with real effects.

The drilling simulator adopts the concept of virtual manufacturing technology, and the development process is based on modern computer control technology, computer simulation technology, computer graphics technology, and computer network technology, combined with the actual technology of drilling engineering, changing the original drilling training method.

The development of the oil industry is inseparable from the on-site geological conditions and is full of crises and challenges. There are high requirements for employees’ ability and safety awareness, and traditional on-site training has certain limitations. For example, whether the effect of vocational training is good mainly depends on the level of teachers. There is no clear and unified evaluation standard for the training process. reusability, etc.

It can be seen that the traditional training technology is not only limited by time and space but also has great problems in terms of manpower, resources, funds, organization, and implementation. Especially for advanced training in dangerous operations or without experimental conditions, traditional training methods are even more difficult to achieve. The limitations of the traditional training mode restrict the expected training quality and training efficiency, and cannot meet the needs of modern society, so the advantages of drilling simulators are highlighted.

A drilling simulator is a control-centric VM device, mainly used for the training of drilling talents. This set of virtual training equipment uses virtual reality technology to realistically simulate the details of the drilling process. Through the operation of the simulated drilling rig equipment, the trainees can directly observe the activities on the drilling platform and the operation results, and finally, achieve the effect of allowing the trainers to master the correct operation process. Virtual training has the following characteristics:

Simulation

With the support of virtual reality technology, the virtual training facility has the same function and operation method as the real training facility, and the trainees can train their skills through the virtual training facility as easily as in the real training base. This is because the virtual training environment, whether it is a real environment or an imagined environment, is virtual but realistic. The ideal virtual environment should be such that it is difficult for the trainee to distinguish the real from the fake.v

Openness

A virtual training environment can provide a variety of training venues for all trainees at any time and place. In fact, the connotation of a virtual training environment is extensive. It is different from the traditional training base concept. It has an environment similar to traditional training programs, but it is better at making the trainees immerse themselves in the realistic environment of the training program objects. Any virtual environment in which trainees can learn or train certain skills through the operation of relevant appliances is attributed to the virtual training environment.

Hypertemporality

The virtual training environment has the characteristics of time and space. It can display or organically combine the objects and events owned by the past world, the present world, the future world, the micro world, the macro world, the objective world, the subjective world fantasy world, etc. Provide training to students anytime, anywhere.

Drilling simulators have positive implications for safe, effective, and high-quality training in oilfields. It can meet the ever-changing requirements of skill training in the information age and is an emerging flexible training model with high level, high efficiency, and low cost. As the graphic part of the drilling simulator, the drilling simulator visual simulation system truly displays the three-dimensional environment and operation process of the well site, which is of great significance to the entire virtual training process. Esimtech is a professional drilling simulation provider and we have the most advanced simulation devices for you to choose from, please contact us if you are in need of it.

Speaking of the Petroleum industry, what would you think of? Black oil gushing out from the ground? Or giant machines roaring offshore and in the desert? To be sure, it’s a field of both high-input and high-output, generating millions of barrels of “Liquid Gold” every day, and consuming huge resources and high-tech labor at the same time.

To extract oil and gas from the ground, well-trained operators and high-precision instruments are both vital. Demand for high-quality labor always requires labor training to be more efficient and effective, that’s where it comes to the drilling simulator.

What is a drilling simulator?

Generally, a set of devices that replicates the environment, phenomenon, operations, and feedback of the oil & gas drilling process. To achieve a certain level of fidelity, a full size drilling simulator is often equipped with physical operation consoles like the driller console, the BOP console, the remote console, etc. Along with a highly simulated display system (normally 3D), the whole layout of the device looks exactly like the operating room.

Apart from physical devices and equipment, petroleum-based drilling software is designed and embedded in the entire system to interact with the operators. They can lay their own hands on the handles and buttons to do the drilling, then get feedback from the machine to see how a natural oil well would respond to their operation. By creating “the scene”, operators in the device are enabled to experience how these expensive gases and liquids are being produced by our technicians and workers. You’d know it by now, the machine is created to train practitioners in the Petroleum industry.

The use of simulators for personnel training is not new at all in some specific industries and fields: aerospace, military, marine survey, and even car driving lessons. Now the digitization of tutorials has come to the oil & gas industry. Since its invention, thousands of drilling simulators have been deployed around the globe, providing E&P companies and drilling contractors a lot more well-trained labor than before by improving the efficiency of oil and gas work skills teaching. Petroleum engineering has also benefited from it.

Why not just train the operator on site?

The answer to this question is clear: for HSE and money-saving.

The petroleum industry requires complex and high-precision work skills, while the dangerous and harsh environment makes it hard to carry out any training activity at the construction site. To ensure the trainees’ health and safety while providing them with practical training, a simulation system becomes a good way out.

Another factor is that a part of oil and gas production accidents in recent years are caused by human factors, and the consequences of such accidents can be catastrophic. Complete HSE training is necessary before actual work.

Some might wonder why is it money-saving since you need to purchase this complex machine at a price of a nice car. While a whole set of simulation training systems can be costly, it’s only a fraction compared to the cost of oil & gas production (btw drilling is one of the most expensive parts of the entire process). That is to say, having your trainees operating on the real machine could potentially cost a lot more money (and is extremely dangerous). Plus, a drilling simulation training system also helps reduce the non-productive time to a minimum, leading to more output.

Multiple layers of materials must be neatly bonded together in the production of coil materials, or else waste or jams will occur. The web guiding system is capable of multi-layer material alignment, zero waste in the refueling process, and no jams. The web guide is a programmable correction controller that tracks the material’s edge or printing lines for high-accuracy swing.

Working Principle of Web Guiding System

A closed-loop controller is used by the web guiding system. First, the sensor detects the coil’s edge or line, and the system automatically reads the deviation between the coil’s actual and setting positions and converts the offset into an electrical signal. The signal is then sent to the controller. The signal is then calibrated by the controller and sent to the linear driver. The linear driver drives the deviation correction according to the magnitude of the signal. Then the guide mechanism adjusts the coil to the set position. The drive signal of the current drive is only proportional to the deviation of the coil, which makes it possible to provide precise control for various coils.

Applications of Web Guiding System

The web guide system is used in a variety of industries, including packaging, printing, labels, building materials, paper pulp, non-woven fabrics, and corrugated paper processing.

Characteristics of Web Guiding System

1. Brushless servo motor, no maintenance required

2. Accurate ball screw

3. The guide roller’s length and span can be adjusted.

4. The most difficult-to-detect material can also be easily controlled.

5. The tracking speed can be adjusted arbitrarily without affecting the belt shaft’s size.

6. The semi-fast voltage and electric current feedback function can automatically restore and protect the internal circuit system, with good stability and quick action response.

High-performance Arise Web Guiding System

Arise is a leading web guiding system manufacturer in China with an audited R&D team. Using Arise’s high-precision web guiding equipment, you can ensure continuous and accurate edge position control of multi-layer non-woven fabric in various production processes while keeping the machine running at full speed.

Deviation of coil materials may occur during the uncoiling, technological processing, winding, and other processes due to deviation of the coil itself or the processing machine. The web guiding system offers a solution for reducing the occurrence of such incidents. It constantly monitors the position of the coil material during production and makes real-time corrections. The web guiding machine can ensure and improve product quality and efficiency.

Why The Web Guiding Machine Important

Flexo printing machines frequently use an automatic web guide machine to ensure that the printing material enters the printing unit in a stable horizontal position. It can detect and correct a 0.5 mm deviation in a specific horizontal edge position of the printing material in real-time. Photoelectric sensors are commonly used for opaque materials such as paper and aluminum foil, while ultrasonic web guide sensors are used for transparent materials such as films. Once the printing material enters the printing and die-cutting rewinding areas, the installation accuracy of the own processing machine and the parallelism between the rollers ensure the stability of its horizontal edge position.

How Does The Web Guiding Machine Work

The web guiding machine controls the position deviation of the thin material during the conveying process with a constant-speed motor. If the material’s winding speed needs to be changed, the correction speed cannot be changed, which easily leads to the phenomenon that curling cannot be corrected. In addition, the microcomputer photoelectric deviation correction web guiding system can meet the needs of customers.

A computer-controlled photoelectric correction controller, color discrimination tracking photoelectric, ball screw, and synchronous motor are all part of the web guide system. The computer-controlled photoelectric correction system’s MCU control has a frequency conversion output that can adjust the motor speed based on the needs. In terms of production, the structure is simple, easy to use, convenient, and practical.

1. When winding, track the edge of the substrate and correct any unevenness.

2. Keep the coating material equidistant from the substrate’s edge by tracking it.

3. The correction speed can be adjusted to keep in balance with the roll speeds of different materials.

Technical Parameters of The Web Guiding Machine

1. Support three operational methods such as line tracking, edge tracking, centering tracking, and so on.

2. Photoelectric sensor, ultrasonic sensor, and CCD sensor support

3. Automatic detection of sensor parameters; in most cases, there is no need to calibrate the sensor.

4. Automatic stroke measurement in the absence of a mechanical limit switch

5. Extremely fast response time of 500 microseconds (0.5 milliseconds)

The ball screw is driven by a DC servo motor.

7. Save 10 groups of different material parameters for easy and quick material switching.

8. Three-language menu operation in simplified Chinese, traditional Chinese, and English.

9. Humanized operation, quick and easy.

10. PLC/human-machine interface networking control support.

Web Guiding Machine Expert – Arise

Arise is a China web guide machine manufacturer, and Arise web guiding can ensure continuous, precise control of various coil materials in various production processes. With the high-performance automatic Arise web guide control system, it is possible to ensure that the material does not deviate from the correct position while minimizing waste and downtime.

To ensure that the web tension of the whole corrugated paper production line can meet the requirements of the maximum speed, realize the fast alignment and fitting of the base paper, and minimize the trimming, the carton factory is paying more and more attention to the purchase of the web guide and tension control system. If the corrugated paper production line can be well controlled by the web guide system, it can greatly reduce material waste and save production costs.

Why Use Web Guide And Tension Control System When Building Corrugated Paper Production Line

In recent years, the corrugated box packaging industry has changed significantly. The equipment speed of the production line is becoming faster and faster. In the past, the speed of 100m/min and 150m/min has been called high speed. But now, the speed of 200m/min and 300m/min have been realized.

How to save energy more intelligently and produce high-quality products at the same time is the biggest challenge faced by carton factories, especially those with corrugated paper production line. Many practical application examples in the paperboard factory have confirmed that the web guide control system can play a significant role in reducing the waste paper volume, improving the production speed, and improving the quality of the finished paperboard products in the paperboard factory. It means uniform tension, accurate fit, small trimming and higher speed.

The paperboard factory is equipped with a web guiding control system when the new production line is installed to ensure the improvement of the machine efficiency. The application of the corrugated paperboard web guide and tension control system has brought benefits to many paperboard factories. More and more factories regard the web guide and tension control equipment as the necessary equipment for production line construction.

Configuring The Whole Line Web Guide And Tension Control System To Bring Huge Cost Savings.

Many factories pay more attention to the production loss of defective products but pay less attention to the trimming loss. They think it is inevitable that it is not produced by workers. However, the trimming loss can be greatly reduced through the configuration of the whole line web guide and tension control system.

The web guide and tension control system is to control the real-time monitoring and automatic alignment or centering operation of the single-sided machine, double-sided machine and slitter, so as to reduce the loss caused by the amount of uneven edges and trimming.

Web Guide Control of Single-sided Machine

Monitor the position of the core paper entering the single-sided machine in real-time, controlling the position of the base paper balancer or move the base paper holder in real time. Adjust the consistency between the inner paper and the core paper, and reduce the uneven edge loss.

Web Guide Control of Double-sided Machine

Real-time monitoring of the position of the paper into the double-sided machine, real-time adjust the web guide controller to keep the movement of the pit paperboard consistent with the paper.

Web Guide Control of Slitter

Monitor the position of the paperboard entering the slitter in real time, controlling the mobile slitter to keep consistent with the paperboard in real time.

After configuring the whole line web guide and web tension control system, the loss of edge-leveling is only 1/3 of the manual operation control

Manually control the adjusted edge trimming amount, that is, the length required for paperboard edge trimming is 10-15m. The edge-leveling quantity of the whole line web guide control, that is, the length required for paperboard edge-leveling, is 3-5m.

Professional Web Guide And Tension Control System Manufacturer – Arise

Arise is one of the leading manufacturers of web guide and tension control system. It can provide comprehensive solutions to the web guide problems from the processing of textile, paper, corrugated cardboard, plastic film, rubber, tire, metal film and non-woven fabric and other materials. Arise has accumulated rich experience and knowledge in the production process of corrugated cardboard, from standard basic equipment of web guide and tension control to the new generation of automatic detection and intelligent production line quality control management system, which has brought great help to the corrugated paperboard factories and help them save huge production costs.

What is a 3V CR2032 lithium manganese battery?

3V CR2032 lithium manganese battery belongs to the lithium-manganese dioxide structure. The positive electrode material of the battery is manganese dioxide with very stable chemical properties, and the negative electrode material is metallic lithium. The electrolyte is a solid salt or a salt electrolyte dissolved in an organic solvent, such as ethylene glycol dimethyl ether, propylene carbonate, and lithium perchlorate. This kind of battery is shaped like a button, referred to as button lithium battery or lithium manganese button battery.

The advantages of the CR2032 coin lithium battery include high specific energy, long storage period, small self-discharge, safe use, wide operating temperature range, and the battery can work normally in the temperature range of -20~+60℃.

The name of CR2032 lithium manganese battery is named according to IEC standards. C refers to a chemical battery system using metallic lithium as the negative electrode and manganese dioxide as the positive electrode. R means that the shape of the battery is cylindrical. If it is a square, it is represented by F. 20 means the battery diameter is 20mm, and 32 means the battery height is 3.2mm.

The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity is 200-240mAh.

With the continuous development of the manufacturing process and the requirements of some emerging industries, CR2032 lithium-manganese batteries have also undergone some improvements. The main reason is that the improved capacity will be very different, and the current output capability will be improved.

The battery is often used in electronic scales, calculators, electronic dictionaries, remote keys for cars, CMOS batteries on computer motherboards, and other memory functions or power-off protection modules.

The shelf life of CR2032 lithium manganese batteries is generally 5 years. However, if the manufacturer’s manufacturing level is not high, or the quality control is not good, its life will be shortened sharply. If used in a sealed, normal temperature, moisture-free environment, the service life will be further extended, up to 8 years or even 10 years.

What is a CR2025 battery?

Similar to the above introduction, in cr2025, C represents a chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode. R indicates that the shape of the battery is cylindrical. The difference from cr2032 is that 20 means the diameter of the battery is 20mm, and 25 means the height of the battery is 2.5mm.

The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity ranges from 140-170mAh.

Can car keys CR2032 and CR2025 be used interchangeably?

Car keys CR2032 and CR2025 cannot be used interchangeably. It should be noted that the car key battery is not a universal type, and each key has a model on the battery.

The specific differences are reflected in:

1. The thickness of the battery is different. The CR2032 is 3.2mm thick and the CR2025 is 2.5mm thick. Different thicknesses are suitable for different models.

2. The capacity is different. The capacity of CR2032 is 50-80mAh more than that of CR2025. Because of its large capacity, it is mostly used in electrical appliances with a higher power.

3. The discharge current is different. The CR2032 can withstand a maximum continuous current of 20mA, while the CR2025 can usually only withstand a discharge current of 10mA. Therefore, when choosing a model, it should be matched according to the actual use current of your own product.

Note: C in other rules does not necessarily refer to the lithium-manganese system. For example, C of ANSI (American National Standards Institute) refers to Carbon-Zinc.

What are the Similarities Between CR2025 and CR2032?

The nominal voltage is all 3.0V, and the terminal voltage is all 2.0V. The shapes are similar, both in the shape of buttons. And can be applied to the computer motherboard CMOS battery, other memory functions or power-off protection modules, electronic scales, calculators and electronic dictionaries, and other products.

For more detailed information, please visit the article page of the differences between CR2032 battery and CR2025 battery.

Web guide control system refers to the timely correction operation of the offset coiled material when processing the coiled material. The occurrence of web guiding system plays an important role in the production of coil materials.

What Conditions Web Guide System Used For

The web guide system is usually used under the following conditions:

(1) Users need to adjust the sensor position frequently and it is difficult to approach the sensor, such as in the use of a large coating machine.

(2) The material width is constantly changing, such as in the application of plastic film extruder machine. The web guiding system needs to be installed at a higher position or a position that is difficult for workers to operate. Automatic width adjustment can be achieved by installing an automatic web guide rail.

Solutions To The Failure Of Web Guide System

1. The electric eye does not track, that is, the film is uneven and irregular.

Solutions

The sensitivity of the electric eye is reduced, or the lens is blocked by dust. Please clean the electric eye or replace it.

The system sensitivity is not enough. Under normal circumstances, the film should shake at the electric eye, and then adjust the sensitivity adjustment knob on the web guide controller to make it in the best state.

2. The web guide system can’t track some colors.

Solutions

Generally, LED colors of blue, white, and red have partial color images and do not know the true color. That is, blue light is the worst for blue recognition and yellow light is more difficult for white recognition. At this time, please press and hold the SET key for three seconds to let the photoelectric eye automatically adjust the light source or adjust the sensitivity knob of the controller to increase the sensitivity.

3. The actuator of the web guide controller goes to one side and can’t return.

Solutions

This phenomenon is generally caused by damage of the power tube of the web guide controller. Manually check whether the web guide actuator only moves to one side. If the actuator only moves to one side manually, replace the high-power tube. If it can walk on both sides manually, but only walk on one side after the electric eye is connected, the electric eye is broken or the positive/negative direction of the controller is incorrect. Replace the electric eye or adjust the controller.

4. The web guide controller does not work.

Solutions

If the power supply is not connected, check whether the 2A/5A fuse tube is broken or has poor contact.

5. The balance can’t be adjusted.

Solutions

Adjust the balance potentiometer for multiple turns. If the direction is wrong, it will never be adjusted to balance. Or the potentiometers on both sides are broken.

Why Choose Web Guide System Manufactured By Arise

The Arise automatic web guide system adopts a DC stepping motor, which brings advantages in accuracy and speed. Compared with similar products on the market, the web guide system of Arise has faster response, higher accuracy, more concise and beautiful appearance, and the sensor accuracy can reach 0.01mm, achieving accurate web guiding.

The Arise web guide controller integrates the logic control unit and the motor drive unit into an independent and very compact control box, with LCD color display to ensure a convenient and user-friendly interface.

Features of Arise Web Guide System

1. High accuracy

2. High speed: position detection response time within 10ms.

3. No additional maintenance required.

4. Combined ball screw.

5. The driving action is very agile and precise.

6. Low noise

7.Fast response

With the industry’s rapid development, the web tension control system has gradually become an essential product in every production line. It can replace the traditional floating roller tension control method with precise electronic control, as well as the old mechanical control method.

The Working Principles Of The Web Tension Control System

The tension of each unit is controlled at the unwinding portion of each unit, and the analog signal is fed back to the control unit, such as a PLC, via the tension amplifier, in order to precisely control the tension of the material and meet the requirements of the production line for the production process.

Composition Of Web Tension Control System

The web tension control system can be used to create tension signal amplifiers, tension display meters, and tension controller, among other things. Standard flange and housing mounting are two installation methods.

Web Tension Detector

It is used to detect the tension of coil material in real-time. It is built with a metal foil strain gauge and a wheatstone full bridge design. It has high detection precision, good linearity, high repeatability, little hysteresis, and a high overload coefficient.

Web Tension Controller

Web tension controller adopts the PID calculation output to various types of actuators including AC and DC motors, pneumatic brakes / clutches, magnetic powder brake clutches for tension control, the tension detection signal, the floating roller signal, the winding diameter position signal, and other signals.

Why Choose Arise WebTension Control System

Controlling web tension system has numerous applications in various industries. The precision of coil tension control is becoming increasingly precise as automation advances. Arise achieves true constant tension control through a precise detection and control system. In the field of tension control, has rich experience in tension control, and has a full range of tension control products. Its excellent web tension controller, web tension detector, web tension display, web tension signal amplifier, etc. provide customers with perfect solutions.

Many tension control problems on coating machines, printing machines, slitting machines, compound machines, and other models are solved by the Arise tension control system. These issues primarily affect material unwinding, feeding traction, and discharging. The four tensions refer to the four tensions that occur during the traction and winding process: unwinding tension, feed traction tension, discharge tension, and winding tension. All four tensions are fed into variable frequency motors, magnetic powder brakes, servo motors, and so on. To better meet customer needs, the Arise tension control system can also perform high-speed non-stop roll change and new roll pre-drive functions.

Magnetic powder clutch brake is widely used, and it is classified as follows: Brake Control, Start-Up This application includes normal start (clutch) and brake functionality (brake). Because the motor is idling, the maximum torque of the motor can be fully utilized when the load is started. As a result, even if the load GD2 or starting resistance is high, it can be started up easily and smoothly without causing significant impact. Furthermore, because the motor is completely idling, it is extremely beneficial to improve the motor’s working conditions and extend its service life. Furthermore, based on the torque characteristics, adjusting the excitation current is all that is required to control the start and braking time, or to change the start and brake process curves.

Application Of Magnetic Powder Clutch Brake

Large transmission equipment, walking cranes, large blowers, axial fans, air compressors, cement kilns, paper machines, rotary impact machines, rolling, rolling machines, wire drawing machines, large textiles, printing and dyeing, and printing are all practical applications. Machinery, as well as the inching and operation of various pieces of industrial machinery.

Selection Of Magnetic Powder Clutch Brake

1. Torque range of operation The magnetic powder clutch’s maximum torque is affected by coil heating, magnetic saturation characteristics, powder life, and mechanical strength. It is capable of absorbing 130% of the theoretical torque. The lower torque limit is determined by the idling torque and torque stability, with more than 50% of the theoretical torque.

2 . The structure type

A coil-type magnetic powder brake with a slip ring has good heat dissipation but is prone to failure and has low reliability. Furthermore, this structure necessitates frequent reverse operation during operation, which is detrimental to bearing life and unsuitable for high-speed transmission systems. The coil-type magnetic powder clutch operates reliably and has a low idling torque. After energization, the torque increases quickly, but the excitation power, volume, and weight are slightly increased.

3. The cylindrical rotor structure size, magnetic powder is uneven, stable performance, suitable for large machinery; cylindrical rotor moment of inertia and small size, suitable for mechanical transmission requiring high sensitivity The rotor has a low moment of inertia and moves quickly, allowing it to be used in high-frequency combinations.