Device and method for precisely controlling rotating speed and rotating angle of universal low-speed motor

Abstract

The invention discloses a device and method for precisely controlling the rotating speed and the rotating angle of a universal low-speed motor. A closed-loop control system structure of a sensor and a controller is adopted. The device comprises a gyroscope sensor circuit for acquiring the angular speed of the motor, an infrared receiving circuit for acquiring and receiving orders sent by an infrared remote controller, a motor driving circuit for driving the motor to start, stop, accelerate and decelerate, an interface and indicating circuit for being externally connected with a direct-current motor, a stepping motor and a steering engine and sending indicating signals, and a microcontroller circuit for receiving data acquired by the gyroscope sensor circuit and the infrared receiving circuit, sending control signals to the direct-current motor driving circuit and controlling the indicating circuit to send out the indicating signals. The angular speed can be precisely controlled through an angular speed closed loop, and the rotating angle can be precisely controlled through the angular closed loop of the angular speed to the time integral.

Description

technical field [0001] The invention belongs to the technical field of automation, and in particular relates to a device and method for controlling precise rotation speed and rotation angle of a universal low-speed motor. Background technique [0002] In recent years, the extensive use of industrial transmission systems, robots and mechanical arms has made high-torque, low-speed motors more and more widely used. The traditional method of measuring the speed of DC motors with rotary encoders has no obvious advantages in low-speed motors. The price of the device is quite high, and optocoupler isolation is required, so the wiring is more complicated; although the stepper motor and steering gear can calculate the rotation angle through the number of steps or pulses, in a complex environment, there will be out-of-step phenomenon, resulting in inaccurate control; Although the servo motor under precise control can reduce the occurrence of such situations, the price remains high; ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the extensive use of industrial transmission systems, robots and mechanical arms has made high-torque, low-speed motors more and more widely used. The traditional method of measuring the speed of DC motors with rotary encoders has no obvious advantages in low-speed motors. The price of the device is quite high, and optocoupler isolation is required, so the wiring is more complicated; although the stepper motor and steering gear can calculate the rotation angle through the number of steps or pulses, in a complex environment, there will be out-of-step phenomenon, resulting in inaccurate control; Although the servo motor under precise control can reduce the occurrence of such situations, the price remains high;

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