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stepper motor slipping

BINU K
Intellectual 935 points

Hai,

     Iam using a bipolar stepper motor driving with a motor driver. Recently it starts slipping.

The application is  automotive. So definitely there is some vibration. Any chance for this vibration effect stepper motor magnetic property and decline the performance?

Is there any solution for stepper motor slipping ? 

  • 0
    TI__Guru** 114905 points
    Hi Binu,

    What device are you using to drive the stepper motor? Have any settings been changed recently?

    What are the motor specifications? What are the initial step rate, final step rate, and acceleration rate?
  • 0 in reply to Rick Duncan
    Intellectual 935 points
    Hai,
    Iam working with an automotive application. Here I want to adjust the simple gear system of throttle valve.
    My stepper motor is 42SH33 -3a. and I need a micro-steps 1/8 step or 1/16 steps.
    It works fine a long day in my initial testing days , but gradually I hear a noisy sound in that and start slippy.

    The whole system is in a vibrating platform , is there any chance of affecting stepper motor magnetic property and decline the performance?
  • 0 in reply to BINU K
    TI__Guru** 114905 points

    Hi Binu,

    BINU K said:
    The whole system is in a vibrating platform , is there any chance of affecting stepper motor magnetic property and decline the performance?

    This is really a question for the motor manufacturer. Please contact them directly.

    Are you driving the motor in a bipolar or unipolar configuration? If bipolar how much current are you using? Is it possible that you are using too much power and overheating the motor?

  • 0 in reply to Rick Duncan
    Intellectual 935 points
    Hai,
    Iam using bipolar stepper. The current is below the limit, it is 0.31 A.

    I have a unipolar stepper also. But when it use as a bipolar the step angle is not satisfactory and less torque.
    Can you please suggest a better method.