Question

The following options include what are the characteristics of stepper motors ( ).

A. High stiffness

B. Mostly AC power supply

C. Open-loop control of lost pulses will affect accuracy

D. If the speed is too small, it is easy to produce low-frequency oscillation

Answer 1

Answers: A, B, C, D.

Answer Analysis:

Stepper motor features include:

1. Stepper motor is a discrete moving element, its output displacement is proportional to the input pulse signal, and the output position and speed of the stepper motor can be controlled by controlling the number and frequency of pulse signals.

2. The stepper motor has high turning torque and rotation direction, can respond quickly and accurately position, and is suitable for various automatic control and transmission systems.

3. Under the open-loop control of the stepper motor, if the pulse signal is lost, it may cause the motor speed to be inaccurate or stop rotating, which has a certain impact on the accuracy.

4. Stepper motors are prone to oscillation during low-frequency operation, and corresponding control strategies need to be taken to reduce this effect.

So, depending on the title, the answer is ABCD.