Explanation of key points for selection of stepping motor driver
Key Points for Attention in the selection of stepping motor driver explain that the rotating speed of the stepping motor driver is proportional to the frequency of the pulse signal, and the frequency of the stepping pulse signal can be controlled to accurately regulate the motor;
The number of stepping pulses can be controlled to accurately position the motor.
Therefore, the typical stepper motor driver control system mainly consists of three parts: 1. Stepper controller: man-machine interface, motion planning and I/O control.
2. Driver: Pulse Distribution and current expansion. 3. Stepping motor: Drive load.
What is the selection strategy of stepping motor driver?
Subdivision of the driver: The Operation forms of the stepping motor driver include whole step, half step and subdivision. The primary difference lies in the control accuracy of the motor coil current.
General stepping motors have the characteristics of low-frequency oscillation, and the stability of low-speed operation of the motor can be improved through Subdivision Settings.
The power supply voltage of the driver: the bump of the input voltage of the driver determines the high-speed function of the motor.
The higher the power supply voltage, the greater the torque of the motor at high speed, and the more it can prevent high-speed progress.
However, excessive voltage will lead to overvoltage maintenance of the driver and more motor heating, which may lead to driver damage.
When working under high pressure, the oscillation of the motor moving at low speed will be larger.
Current of the driver: current is the basis for judging the driving capability of the driver. Generally, the maximum rated current of the driver cannot be greater than the rated current of the motor.
The output current setting of the driver determines the torque of the motor. The larger the current setting value is, the larger the output torque of the motor is, but the heating of the motor and the driver is also serious when the current setting is too large.
The rated current value of stepping motor is selected as the reference for general setting method, but the best value in practical use should be adjusted on some basis.
TAG stepper motor driver selection