Control method for improving positioning precision of servo motor

A technology of servo motor and control method, applied in the field of servo motor, can solve the problems of inaccurate positioning control, low stability and reliability of servo motor, improve stability and reliability, realize real-time position display and automatic positioning, efficiency high effect

Inactive Publication Date: 2018-12-07
四川台合机电设备有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problems of low stability and reliability of the servo motor and inaccurate positioning control in the prior art, and provides a control method for improving the positioning accuracy of the servo motor. When applied, the stability and reliability of the servo motor can be improved, and the Control accuracy of manuscript positioning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] The control method for improving the positioning accuracy of the servo motor follows the following steps in sequence:

[0022] A. Set the servo motor automatic positioning device, the right end of the load part is connected to the servo motor, the encoder is set on the servo motor, the right end of the servo motor is set with a threaded screw mechanism, and the lower end of the threaded screw mechanism is connected with a limit switch;

[0023] B. Connect the threaded screw mechanism and the limit switch to the servo motor on the load part, and perform precise calculation of the position by operating the encoder and the threaded screw mechanism to realize real-time position display and automatic positioning;

[0024] C. The input control signal enters the pulse deviation counter of the servo motor for addition;

[0025] D. The encoder pulse feedback of the input servo motor enters the pulse deviation counter for subtraction;

[0026] E. When the pulse deviation counter...

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PUM

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Abstract

The invention discloses a control method for improving positioning precision of a servo motor. The method comprises the following steps: by operating an encoder and a screw thread and screw rod mechanism, precise position operation is performed, and a control signal is input into a pulse deviation counter of the servo motor for performing addition; when the pulse deviation counter is not zero, a control unit of the servo motor sends a speed instruction to a speed loop of the servo motor; via conversion of speed loop parameters and load inertia ratio parameters, a current instruction is output;the current instruction is used for controlling a inversion element of the servo motor via a control loop circuit, and the inversion element is used for driving the servo motor to perform positioningadjustment. The method disclosed in the invention helps solve problems of low stability and reliability of the servo motor and inaccurate positioning control in technologies of the prior art, and thecontrol method for improving the positioning accuracy of the servo motor is provided, the stability and the reliability of the servo motor can be improved when the method is applied, and control precision of positioning can be improved.

Description

technical field [0001] The invention relates to a servo motor, in particular to a control method for improving the positioning accuracy of the servo motor. Background technique [0002] Servo motors are the main power output and control components of many industrial machines. Servo motors can carry loads to achieve precise positioning control, speed control and torque control. It is widely used in automatic machines in packaging, printing, robotic arms, injection molding and other industries. Pulses are the most common way to control servo motor positioning. At present, on the upper controller (such as: PLC, motion controller, numerical control, axis card, etc.) set the sent pulse speed, number of pulses, acceleration and deceleration time; then start sending pulses, you can easily control the servo motor according to Move at the set speed and displacement. However, the pulse-controlled servo driver has more connections, the structure of the control equipment is cumbersom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/14H02K11/21
CPCH02P23/14H02K11/21
Inventor 廖俊明
Owner 四川台合机电设备有限责任公司
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