Permanent magnet synchronous motors account for over 95%, and the mainstream position is stable. In terms of vehicle types, the installed capacity of new energy passenger car driving motors in July reached 74,925 units, reaching the peak of the year, breaking 70,000 units for the first time, and the installed motor capacity of passenger cars accounted for 88% of the total installed capacity. In the first seven months, the installed capacity of AC asynchronous motors has gradually decreased, and permanent magnet synchronous motors have increased steadily. Affected by the decline in the output value of new energy buses, the installed capacity of new energy bus drive motors in July was 4,117 units, which was a 22% decrease from the previous month.

It accounted for 5% of the total installed capacity and was overtaken by new energy special vehicles. In the field of passenger cars, permanent magnet synchronous motors occupy a certain mainstream position, accounting for over 99% of this month, and other types of motors account for very little. The installed capacity of drive motors for new energy vehicles in July was 6,373 units, accounting for 7% of the total installed capacity. In the category of new energy special vehicles this month, the installed capacity of permanent magnet synchronous motors increased, accounting for 93% of this month. In terms of vehicle types, in the area black hood motor of ​​new energy passenger cars, BYD is based on the excellent output value of passenger cars. The installed capacity of motors is far ahead, reaching 22083 units.

This number is almost the sum of the installed capacity of Jingjin Electric, United Sedan Electronics, BAIC New Energy and Hefei Juyi, which ranked second to fifth. Judging from the number of supporting car companies, in July, Jingjin Electric provided supporting motor services for 4 car companies. Secondly, United Electronics, Zhejiang Founder, Chuangdrive (Shanghai) New Energy and Zhuhai Impor all support two auto companies.

How to judge whether the temperature rise during the servo motor operation is normal, you can check and confirm according to the following steps: 1. Is it used for continuous operation? The characteristics of the servo motor are not suitable for use in continuous operation. In this case, there will be a high temperature rise. Please re-confirm the requirements for the mechanism operation and re-evaluate the motor used. 2, Please confirm the frequency and cycle of the mechanism operation?过 If the frequency of stop-and-go operation is too high, the current may be reactivated before the pulse input is stopped for too short time, and the temperature rise will be higher at this time. It is recommended that you reduce the frequency of movements to improve temperature rise. 3. Can the situation of reducing the RUN current be improved?

When the torque is sufficient, reducing the RUN current of the driver will effectively reduce the temperature rise. However, if it is necessary to use a large current due to the torque, it is recommended that you replace the motor with a higher-level motor and then reduce the current to improve the temperature rise problem. 4. Can the situation of reducing the STOP current be improved? When the holding force is sufficient, reducing the STOP current of the driver will effectively reduce the temperature rise when the motor is stopped.

However, if it is necessary to use a large STOP current due to the stop holding force, it is recommended that you replace the motor with a higher-level motor and then reduce the current to improve the temperature rise problem. 5. What is the ambient temperature? Is it too high? Motor temperature = ambient temperature + motor temperature rise, so when the ambient temperature is higher, the temperature of the motor will be higher as a result. It is recommended to install a cooling panel or cooling fan to help dissipate heat. 6. Please confirm whether the wiring on the motor side is correct? The wrong phase connection will cause the motor to run erratically, which may cause higher temperature rise. If there is Blower motor no problem for the above reasons, the temperature of the motor should be normal in this case, and it is not overheated. Please directly measure the motor with a thermometer to confirm the temperature.

The difference between a stepping motor and other motors is that the stepping motor must be connected to the control pulse to run, otherwise it Purifier motor cannot work. The simplest operation method of a stepping motor is to form an open-loop system with control pulses. Compared to traditional AC and DC servo systems, the so-called incremental position control system has a significantly reduced cost, and almost no system adjustment is necessary. With the digitalization of the control system, the application of stepper motors is becoming more and more widespread. In response, semiconductor manufacturers in various countries have developed and produced a large number of ASICs suitable for stepper motor control.

The aforementioned static torque characteristics of stepper motors are the most important characteristics. The angular accuracy of the stepping motor can be directly connected by a high-resolution encoder through a coupling (so that the rotational displacement does not occur during rotation). The angle is used as a number, which is read by a human counter and calculated by a computer. The results are output by a printer or X-Y plotter and other equipment as the evaluation data of the motor. Position accuracy: An arbitrary point of the rotor is taken as the starting point, so that the measurement is performed once per step, and the motor continuously rotates once to find the difference between the actual position of the rotor and the theoretical position.

The error expressed by the range of positive maximum and negative maximum is called position error, and it is expressed by the percentage (%) of the basic step angle. Step angle accuracy: When the rotor starts from any point and continuously runs, find the difference between the measured angle of each step angle and the theoretical step angle. It is expressed as the percentage of the theoretical step angle (%), which is called the step distance. Angular accuracy is expressed as the maximum value on the (+) and (-) sides in one revolution. Hysteresis error: After the rotor rotates forward from any point for 1 turn, it rotates in the reverse direction to return to the origin. The largest deviation among the deviation angles of each measurement position is called the hysteresis error.

When the motor load is unbalanced or run for a long time, the bearing damage causes the oscillation amplitude to gradually increase. Therefore, the motor sensation test can effectively evaluate the operating condition of the motor. This article introduces the measurement method of motor sensation. Motor oscillation will accelerate the wear of the motor bearings, greatly reducing the normal service life of the bearings, and will announce a large noise during operation. Together, the motor oscillation will reduce the winding insulation. The motor sensation test can effectively check the current working condition of the motor and evaluate the working performance of the motor. 1, the composition of the sensation measurement system When measuring the sensation of the Range hood motor factory motor, it is best to cooperate with the motor test bench. The motor test bench can simulate various working conditions, and the sensation measured under different working conditions is more comprehensive. The sensation sensor is responsible for collecting sensation data, and the host computer software processes the data and displays it in the form of reports and curves. 2. Selection of the sensation sensor The sensation sensor converts the sensation parameter of the measured body into appropriate electrical parameters.

Currently it is widely used. The sensation sensor is an acceleration sensor. According to the principle of sensation sensors, there are the following: magnetoelectric sensors, piezoelectric sensors, resistive sensors, and capacitive sensors. According to the transmission method, it can be divided into: wired, wireless, and wireless sensors have the advantage of being convenient for installation and avoiding weak measurement signals. 3. Device of the tested motor In order to improve the measurement accuracy of the motor sensation, no other sensation disturbance signal is introduced, and the motor device should be ensured in a very firm tooling. In principle, an elastic device can be selected for a motor whose shaft center height does not exceed 450mm, and a rigid device should be selected when the shaft center height exceeds 450mm. 4. Motor sensation test point equipment General motor test point is 6 points. The detailed device orientation is shown in the figure below.

The total weight of the sensor and its accessories should be less than 1/50 of the gross weight of the motor. The sensor and the motor to be tested should maintain outstanding touch. The detection head can choose a magnetic base, an adhesive or a screw connection device. In order to facilitate construction, it is recommended to use a wireless sensation sensor. 5. Motor sensation limit In the host computer software, the sensation, current speed, shaft center height, test point orientation and other information are generally used to comprehensively evaluate the performance of the motor. Different shaft center motors have different requirements for sensation. Whether the measurement results meet the national standard requirements, please refer to ‘GB10068-2008 Measurement, Identification and Limitation of Mechanical Oscillation of Motors with Center Height of 56mm and Above’.

Stepper motors are a new type of motor, and companies need to spend a lot of money when they buy this equipment. The price of this equipment is affected by various factors in the market, and the price is constantly changing. The price of equipment is greatly affected by the demand for equipment. The main factors that affect the price of such equipment are the following two aspects. Element 1: The difference between the data and the data has a profound impact on the price of the stepper motor.

Different materials have great differences in the time of the acquisition. The difference in the data will also affect the quality of the product. The data function of some products is better, which also makes the Ventilation fan motor suppliers selling price of the device higher. Element 2: Technology Technology occupies a very important role in equipment. The research and development of technology requires a certain amount of money. Generally speaking, when new types of equipment begin to appear.

The technology is relatively advanced, so the price of the equipment is relatively high, and the technology of the stepper motor has a great impact on the price of the equipment. Different factors together have an impact on the price of stepper motors, and have a great impact on the use of this equipment in society, which has promoted the better development of this equipment.

Servo motor is the executive element of mechanical production equipment, and it is widely used in servo systems. When using servo motor, because I don’t know much about the principle of servo motor and the structure of servo motor, I feel that there is a big problem when servo motor works. Many people ca n’t help worrying about the onset of fever. Actually, fever is a common phenomenon during the operation of servo motors, but do you know what kind of heat is normal? How can we reduce the heat of servo motors? Fever is to reduce copper and iron losses. There are two directions for reducing copper loss, reducing resistance and current. This requires that motors with low resistance and low rated current should be selected as much as possible in the selection. For two-phase motors, series motors need not be connected in parallel. But this often conflicts with torque and high speed requirements. For the selected motor, the driver’s automatic half-current control function and offline function should be fully used. The former will automatically reduce the current when the motor is at rest, and the latter will simply block the current.

The extent to which the servo motor controller heats up depends on the internal insulation level of the motor. The internal insulation properties are damaged at high temperatures. Therefore, as long as the interior does not exceed 130 degrees, the motor will not be damaged, and the surface temperature will be below 90 degrees. Therefore, the surface temperature of the servo motor is normal at 70-80 degrees. The simple temperature measurement method is useful with a thermometer, and can also be roughly judged: you can touch it with your hand for more than 1-2 seconds, not more than 60 degrees; you can only touch it with your hands, about 70-80 degrees; It will be more than 90 degrees; of course, you can also use a temperature measuring gun to detect.

In addition, because the current waveform of the subdivided driver is Air conditioning fan motor suppliers close to the sine, there are fewer harmonics, and the motor will generate less heat. There are not many methods to reduce iron loss, and the voltage level is related to it. Although a high-voltage driven motor will improve the high-speed characteristics, it will also increase the heat generation. Therefore, a suitable driving voltage level should be selected, taking into account indicators such as high speed, stability, heat generation, and noise.

　　

Stepper motor low speed and high torque equipment makes transmission shorter, which means higher reliability, higher efficiency, smaller gaps and lower cost. It is this characteristic that makes the robot ideal for stepping, because most robot movements are short-cycle cycles that require high acceleration to reach a low point. The power-to-weight ratio is lower than that of a DC motor. Yamasha Electric believes that most robot movements are high speed (and therefore high power) over long distances, but usually include short distance stops and starts. They are ideal robots at low rpm and high torque. All ST robots have encoder feedback which is relative to the software motor count. In the case where no errors can be corrected, the system will stop. Therefore, the integrity of the system is much higher.

So the advantages of using stepper motors in robot design are as follows: 1 is cheaper for stepper motors of equivalent performance. 2 Stepper motors are brushless motors and so have longer life. 3 as a digital motor can accurately locate without hunting or overshoot. The 4 driver module is not a linear amplifier, which means fewer heat sinks, higher efficiency, and higher reliability. The 5 driver module is cheaper than a linear amplifier. The 6 does not have expensive servo-controlled electronics because the signal originates directly from the MPU. 7 Software fail-safe. Main control board problem step pulse. If the software does not work or crashes the motor stops. 8 electronic drive fail-safe. If the motor locked by the drive amplifier fails, it will not run. When the servo drive fails, the motor can still run and may run at full speed. 9 speed control and repeatable (crystal control). 10 If required, stepper motors run extremely slowly. Stepping motor positioning device, so there can be no wrong work, such as not slow down under excessive load, but it will stop. They cannot be used to exert the forces of independent positions. But the robot is a positional device designed to enter the position without errors. A robot whose watchdog encoder reports an error and stops further actions during first gear or collision.

In some low-speed stepper motors, the loss Air conditioning fan motor suppliers of resonance synchronization and procrastination can be generated. Each stepper motor driver is controlled by an independent microprocessor. The pseudo-sine of the drive motor is called a microstep. The microcode watch resonates and automatically switches the phase and current to compensate. In micro-stepping mode running on a silent drive, the motor can be seen in the video over the entire speed range.

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