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On the 20 question you may not know the servo motor

Release date:2015-05-14Views:1529

1 how to correctly choose the servo motor and stepper motor?

Answer: mainly depending on the specific application and decide, simply said to identified: the nature of the load (such as horizontal or vertical load, etc.), torque, moment of inertia, rotational speed, accuracy, and acceleration and deceleration requirements, the upper control requirements, such as the requirement of port interface and communication, the main control mode is position and torque or speed mode. The power supply is DC or AC power supply, or battery power, voltage range. According to determine the motor and model with drive or controller.

2 select the stepper motor or servo motor system?

Answer: in fact, choose what kind of motor should be based on the specific application situation, has its own characteristics.

3 how to use stepper motor driver?

Answer: according to the current of the motor, with greater than or equal to the current drive. If the low vibration and high accuracy, can be matched with subdivision driver. The torque of the motor, as far as possible with the high voltage driver, in order to obtain good performance of high speed.

4.2 phase and 5 phase stepper motors have the difference, how to choose?

Answer: the 2 phase motor at low speed and low cost, but the larger shock, high speed torque decreases quickly. Five phase motor is less vibration, high speed performance, than the 2 phase motor speed high 30-50%, but in some occasions to replace the servo motor.

5 when used in DC servo system, what is the difference between it and AC servo?

Answer: into a DC servo motor brush and brushless motor.

Brushless motor, low cost, simple structure, start torque, wide speed range, easy control, need to maintain, but maintaining convenient (f brush), electromagnetic interference (EMI), on the environment required. So it can be used for cost sensitive general industrial and civil applications.

The brushless motor has the advantages of small size, light weight, high power, fast response, high speed, small inertia, smooth rotation, torque stability. Control complex, easy to implement intelligent, the electronic commutation is flexible, can change the square wave or sinusoidal commutation. Motor maintenance free, high efficiency, low operating temperature, electromagnetic radiation is very small, long life, can be used in various environments.

AC servo motor and brushless motor, divided into synchronous and asynchronous motors, at present motion control generally used synchronous motor and its power range big, can achieve great power. Large inertia, the maximum rotation speed is low, and with the rapid increase of power reduction. Therefore suitable for low-speed applications running smoothly.