Stepping motor starting frequency can not be too high - News - Global IC Trade Starts Here.

Single chip microcomputer STM32L151CCU6

Probe high frequency needle 10445 with line high frequency needle with 1 high frequency core can pass 3A

Mobile phone crystal 3.2*2.5mm 3225 26M (26.000MHZ) 7.5PF 10PPM 20PPM 30PPM

SMD aluminum electrolytic capacitor

The starting frequency of the stepping motor should not be too high. This is because the speed of the stepping motor is zero when it is started. In the starting process, in addition to overcoming the load resistance torque, the electromagnetic torque overcomes the inertia masking of the rotating part, so it starts. The burden on the motor is heavier than continuous operation.

If the pulse frequency is too high at start-up, the speed of the rotor will not keep up with the speed at which the stator magnetic field rotates, so that the position where the first step is completed is far behind the equilibrium position, and the rotor speed is not increased much in the subsequent steps, while the stator magnetic field is still It rotates forward at a speed proportional to the pulse frequency, so the distance between the rotor and the equilibrium position becomes larger and larger, and finally the step of the rotor falls outside the dynamic stability zone and the phenomenon of out-of-step or oscillation occurs, so that the motor cannot be started.

In order to start normally, the starting frequency should not be too high, and then gradually increase the frequency when the motor starts.