Why can't the stepping motor speed go up?
It seems that the third-floor older brother did not step into the motor, which is precisely controlled by the motor. I also met a problem of the building Lord, motor in normal work at low speed, high speed shake but don't turn, analysis of the reasons are as follows: in high speed when the excitation coil excitation time to switch conduction time, the size of the torque and current in the coil, in high-speed coil excitation time is very short, and because the coil of inductive load, under the condition of the power supply voltage must reach a certain current needs certain time, the concrete do not calculate (also don't need too much trouble), at low speeds because field for a long time (coil current is larger) so torque is larger, general to maintain a constant torque during transmission with an adjustable switching power supply chip (e.g., lm2576), when the function is to realize the speed change and change the excitation voltage, voltage high natural in less time is needed to achieve the same current
I don't know what to say about you. The rotational inertia of the stepper motor is small, its speed our basic as a constant, the Angle of the control motor operation is to control the actual motor power, such as motor speed is 30 revolutions per minute, per minute turn 10800 °, step motor can be done at a time of 1.8 ° rotation, account electric motor control circuit can make the accuracy of time control in 10 milliseconds, in the same way, you want to let motor rotate 18361.8 °, can let the machine electricity 10201 consecutive 10 milliseconds is 102.1 seconds. This is easy to implement.
Increase motor speed: drive current in the step motor drive. Precise positioning control: calculate the number of steps in the top machine or PLC.
