When to troubleshoot a stepper motor in a car?
When the stepper motor is running, if there is obvious noise and vibration is caused to the stepper motor, the following steps is helpful to troubleshooting: It really does matter whether the stepper motor is matched with the driver. If not, it may be useless to take following steps such as division, drive current and speed adjustment.
What happens when a step motor stalls out?
If a step motor stalls out, it is unlikely that it will burn up as with most ac and dc motors. If the motor does burn up it indicates a driver problem. (We will explore why this is the case in the next article.)
Is the stepper motor drive analog or digital?
Now the stepper motor driver is divided into digital and analog. The noise of the analog stepper motor driver is large while it is basically no for the digital one, generally because one DSP chip is added to the digital driver to optimize the stepper motor drive.
What causes a step motor to burn up again?
Just replacing the motor will cause the motor to burn up again. This is not a common problem with step motors unless there is a bad driver. Example of a bipolar winding and example of a unipolar winding. In a bipolar winding the current flow on the coils is reversed, which reverses electromagnetic polarity.
When the stepper motor is running, if there is obvious noise and vibration is caused to the stepper motor, the following steps is helpful to troubleshooting: It really does matter whether the stepper motor is matched with the driver. If not, it may be useless to take following steps such as division, drive current and speed adjustment.
What’s the difference between a stepper motor and a brushless motor?
The two are largely the same, fundamentally. However, they differer in intended application. A stepper motor is intended to be operated in, well, steps. A BLDC motor is intended to be operated to provide smooth motion. Since stepper motors are used for motion control, repeatability of the steps is desirable.
How does detent torque work in a stepper motor?
Detent torque is usually specified in the motor datasheet. It is always a loss when the motor is turning and the power consumed to overcome it is proportional to speed. In other words, the faster the motor turns the greater the detent torque contributes power loss at the motor’s output shaft.
How does the power of a step motor work?
A step motor is a constant output power transducer, where power is defined as torque multiplied by speed. This means motor torque is the inverse of motor speed. To help understand why a step motor’s power is independent of speed, we need to construct (figuratively) an ideal step motor.