Integrated circuit for driving and control three groups of stepper motors

Abstract

The invention discloses an integrated circuit for driving and controlling three groups of stepper motors. The integrated circuit consists of a universal serial bus (USB) interface module, a master controller, three groups of stepper motor driving chips, three groups of two-phase stepper motors, three switching voltage regulators and a low dropout linear regulator. The master controller is a singlechip of an automatic voltage regulation (AVR) series, is connected with an upper personal computer (PC) by the USB interface module, receives data from the upper PC, processes the data, and transmitsa pulse signal and a directional signal to the stepper motor driving chips to control the accurate positioning and positive and negative rotation motions of the stepper motors. The switching voltage regulators provide working voltage for the stepper motor driving chips. The low dropout linear regulator provides reference voltage and logical voltage for the driving chips and provides working voltage for the USB interface module and the master controller. The integrated circuit for driving and controlling the stepper motors can achieve relatively higher position accuracy only by open loop control, has a simple structure and high real-time performance, and is easy to control.

Description

technical field [0001] The invention relates to the drive and control of a stepping motor, in particular to an integrated circuit for driving and controlling three sets of stepping motors. Background technique [0002] With the development of science and technology, the development of motors is gradually diversified, and the requirements for position control of motors are getting higher and higher. Servo motors, brushless motors, and disc motors are widely used. Servo motors, brushless motors, disc In the precise control of the position of the motor, the sensor technology is used to convert the sampled position information analog signal into a digital signal through the A / D converter and send it to the control terminal, and compare it with the parameters set by the control terminal to complete the precise control of the motor. Positioning, the existence of a large number of analog signals in this process affects the reliability and stability of the control system to a certai...

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Problems solved by technology

[0002] With the development of science and technology, the development of motors is gradually diversified, and the requirements for position control of motors are getting higher and higher. Servo motors, brushless motors, and disc motors are widely used. Servo motors, brushless motors, disc In the precise control of the position of the motor, the sensor technology is used to convert the sampled position information analog signal into a digital signal through the A / D converter and send it to the control terminal, and compare it with the parameters set by the control terminal to complete the precise control of the motor. Positioning, the existence of a large number of analog signals in this process affects the reliability and stability of the control system to a certain extent; the existence of signal processing circuits and the design of control parameters cause the complexity of control

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