Stepping motor system has good positioning performance and lower capital, and other needs to correct positioning in the field of economical nc processing, manufacturing and testing equipment has been widely used. But because the stepping motor itself inherent low frequency vibration of the topic, makes the application of the stepper motor is limited by some in the vibration and noise are requesting occasions; How to through the low frequency vibration of the stepper motor drive control technology to reduce and inhibition, is an important topic in the applications of stepper motor. Among the existing stepping motor drive technology, subdivision control technology and higher frequency boost pressure control technology is able to effectively reduce the stepper motor in the operation of low frequency vibration and the noise of the main control method, the former is through the study of the way of stepping motor phase current sinusoidal control, make the motor run at smaller unit interval Angle (Mechanical step away from the Angle of a small percentage of a fraction or)To reduce low frequency vibration, but the technology is relatively complex, especially when the motor phase number is large (Such as the five phase)Is not easy to realize and high capital; L frequency boost control technology is by reducing the motor phase winding of the power supply voltage during low speed running and then the method to reduce the low frequency vibration and current litres of frequency control is mainly open loop control of pressure, thus the following main problems: 1. Voltage open-loop control, vulnerable to the power supply voltage fluctuation influence; 2. Motor winding current is determined by the driver output voltage and the winding resistance, so the current vulnerable environment (Power supply voltage and motor parameters, etc. )Impact, which leads to the decline fever or torque; 3. Resistance is very small, because motor drive during low speed running must be small to not over current, output voltage and low voltage winding motor makes quick responsiveness is poorer; 4. Drive adaptability is bad, should be adjusted according to different types of motor. To improve and overcome the current rise of frequency control of pressure of the above problems, this paper puts forward and designs a new kind of litres of frequency booster type stepping motor driven method, this method will increase current control technology and frequency booster technology organic union, drive voltage and current can be controlled, thus driving performance and reliability of progress. By the circular distributor, frequency/voltage conversion and voltage detection, PI adjustment, dc chopper, pulse width modulation, current detection, current control, drive, power amplifier bridge before units such as stepping motor driven system; Into stepper pulse and direction of the external input signals by circular distributor into the electricity order of stepping motor control signal to drive the power amplifier bridge work, and then control the step motor running; By the frequency/voltage conversion and voltage detection, PI adjustment, dc chopper voltage closed loop control system, to supply dc voltage proportional integral control of step motor, ensure that the dc voltage follow up frequency boost control voltage required by a given and change; By the current detection is composed of the current control and current control links, to control the output current of the power amplifier bridge, and within a certain range to make motor current with the motor running speed improvement and progress, to realize frequency booster current control effect. 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:
