If I buy the step progress motor to send 200 pulses a circle, a circle need a minute or so. Now to increase the pulse frequency to speed when the motor is not running. Why the stepper motor speed will not come up the questions, the motor speed can be mentioned on the manual high ah. Another problem is: don't with the required trapezoidal acceleration pulse stepper motor design has nothing to do? Increase the motor speed: raised in stepper motor drives the drive current. Accurate positioning control: computing steps out in PC or PLC. If used stepping motor could not quite understand, stepper motor is different with other motor, stepping motor for precise control,A pulse around each minimum Angle)。 Usually may also encounter similar to speed up problem, 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, torque and current in the coil, the size of the coil during high-speed excitation time is very short, and because the coil for the inductive load, under the condition of the power supply voltage must be reached a certain current needs certain time, the concrete do not calculate,Too much trouble don't have to)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 (Such as lm2576), 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. The above is about why progress step motor speed up, shenzhen, Shanghai four macro electric appliance co. , LTD. , for your answer. the main products: stepper motor, brushless motor, servo motor, stepping motor drive, brake motor, linear motor and other kinds of models of the stepper motor, welcome to inquire. Telephone: