Compared with ordinary motors, stepper motors can realize open-loop control, that is, the angle and speed control of stepper motors can be achieved through the number and frequency of pulses input by the driver signal input end, without the need for feedback signals. However, stepping motors are not suitable for use in the same direction running for a long time, and it is easy to burn out the product, that is, it is usually better to use short distances and frequent movements.
Compared with ordinary motors, stepper motors have different control methods. Stepper motors control the rotation angle by controlling the number of pulses. One pulse corresponds to one step angle. The servo motor controls the rotation angle by controlling the length of the pulse time.
Different work equipment and workflow are required. Power supply required by stepper motor (the required voltage is given by the driver parameters), a pulse generator (mostly now using plates), a stepper motor, and a driver The step angle is 0.45°. At this time, a pulse is given and the motor runs 0.45°). The working process of the stepper motor generally requires two pulses: signal pulse and direction pulse.
The power supply for the servo motor is a switch (relay switch or relay board), a servo motor; its working process is a power connection switch, and then the servo motor is connected.
Low frequency characteristics are different. Stepping motors are prone to low frequency vibration at low speeds. The vibration frequency is related to the load and the performance of the driver. Generally, the vibration frequency is considered to be half of the motor's no-load take-off frequency. This low-frequency vibration phenomenon, which is determined by the working principle of the stepper motor, is very unfavorable to the normal operation of the machine. When the stepping motor works at low speed, damping technology should be used to overcome the low frequency vibration phenomenon, such as adding a damper to the motor, or using subdivision technology on the driver.
Post time: Mar-26-2021