According to the query of Blog Garden, the first, second and third resonance points of stepping motor refer to the resonance phenomenon of stepping motor at a specific frequency, that is, vibration or noise is generated when the motor starts or stops. In order to make the output torque of the motor large, keep pace and reduce the noise of the whole system, the working point usually deviates from the resonance region more.

The following is the general range of the resonance point of the stepping motor: The first resonance point: usually located between 100-200Hz. Second resonance point: usually located between 200-300Hz. Third resonance point: usually located between 300-400Hz.