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The problem of motor chattering when stepping motor is power

时间:2010-04-30 20:13

    When the stepper motor driver is in a phase of power failure, the next time power on, and if this phase is different, the motor will be "jitter" a bit, in order to eliminate jitter, you must remember the phase of the power off. Stepper motor running time for 8, and if you stop in the fourth step, re - power, if you start directly in position 4, there will be a jump in the first step. If the system still remembers that it's still the fourth step, then you can issue the command right, take fifth or third steps.

 

    The stepper motor driver is an actuator that transforms an electric pulse into angular displacement. When the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle (called "step"), it is the rotation of the fixed point of the operation step by step. Number of pulses can be controlled by controlling the angular displacement, so as to achieve the purpose of accurate positioning; at the same time by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve speed control and positioning purposes.

 

    In fact, most of the stepper motor drive without power off phase memory function, especially the use of common special IC stepper drive, special IC after power on reset signal reset pin will motor phase reset to the initial value, the power of the jitter should be unavoidable. Even with an absolute servo motor, it has to be judged and corrected, and it can also be seen as jitter. Or strictly speaking, there is no power on the motor. The key is how much this jitter affects your application. It's better to record absolute stop coordinates, to reset the system, check the origin, and then restore the absolute coordinates before running to the power cut.