Vibration and noise processing method for two-phase stepping motor at low speed operation - News - Global IC Trade Starts Here Free Join

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Stepper motors are known for their tendency to produce significant vibration and noise at low speeds, which is one of their main disadvantages. To address this issue, several effective solutions can be applied:

First, if the motor operates within a resonance zone, adjusting the mechanical gear ratio can help avoid this problematic area. This method is especially useful in applications where the motor's speed is limited or fixed.

Second, using a stepper driver with subdivision functionality is the most common and straightforward approach. This technology allows the motor to move more smoothly by dividing each full step into smaller microsteps, reducing vibration and improving performance.

Third, replacing the motor with one that has a smaller step angle, such as a three-phase or five-phase stepper motor, can also significantly reduce vibration. These motors offer finer control and smoother motion, making them ideal for precision applications.

Fourth, switching to an AC servo motor is another highly effective solution. While more expensive, AC servos provide much better control, stability, and reduced noise, making them suitable for high-performance systems where vibration is a critical concern.

Fifth, adding a magnetic damper to the motor shaft can help dampen vibrations. Although this option is available on the market, it often requires significant changes to the mechanical design, which may not be practical in all cases.

Lastly, if the phase current setting is too high, it can contribute to increased vibration. In such cases, adjusting the current value through the driver to match the motor’s optimal operating range is essential for minimizing unwanted noise and improving overall performance.

By implementing these strategies, engineers and designers can effectively mitigate the issues associated with stepping motors, ensuring smoother operation and improved system reliability in various applications.