For a long time, many people can't find the stepper control problems, and put all the blame for feedback pulse interference; Actually a square wave period T changed from low to high speed on one hundred times, thousands of times, it was a square wave? Plus many encoder scribed line only 3, four hundred, with points, frequency doubling circuit to expand, and when step speed change drastically, serious distortion. stepper motor, stepper motor is also called force motor, in the automatic control system, is used as actuators, converts the received electrical signal into angular displacement or velocity of motor shaft output. Divided into two major categories of dc and ac stepper motor step system first used in the automatic navigation of the ship, gun control and director, then gradually spread to many areas, especially in automatic lathe, the antenna position control, the guidance of missile and spacecraft, etc. Adopt stepper system is mainly in order to achieve the following objectives: (1) with small power command signals to control the power load. gun control and the rudder control is a typical example. (2) in the absence of mechanical connection, controlled by the input shaft is located in the output shaft, the distance the synchronous transmission. (3) the output mechanical displacement accurately tracking signals, such as records and indicating instrument, etc. step by step, never is the issue of 'interference'; If parking instructions is accurate, not accurate due to the presence of inertia movement's total parking. when the motor speed is high, low, feedback pulse frequency and waveform of dramatic changes will happen, giving feedback pulse shaping, counting, points frequency doubling brings great difficulties, even completely gaffe. step by step instructions to inaccurate reason, also is not interference problem: the feedback from the encoder output pulse waveform and frequency, because of the speed of the stepper motor, the frequency of the feedback pulse. The frequency of the step progress motor encoder feedback pulse = x stepper motor speed encoder resolution (r/s)。 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:
