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Control method of servo motor

A control method and servo motor technology, applied in the direction of motor control, control system, control using feedback, etc., can solve the problem that the controlled object cannot be stabilized at the target position, and achieve reduced system fatigue, smooth switching, and fast system response Effect

Inactive Publication Date: 2014-01-01
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a servo motor control method to solve the problem in the prior art that the controlled object cannot be stabilized at the target position

Method used

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  • Control method of servo motor
  • Control method of servo motor

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the drawings.

[0021] The method of the present invention is suitable for various occasions, such as the servo control of the pitch motor in the wind power pitch system and the servo control system of the numerical control lathe. The following is a further description in conjunction with the accompanying drawings. The relationship between the components involved in the present invention is as follows: figure 1 As shown, the servo control system generally includes: upper motion controller 1, servo driver 2, servo motor 3, position and speed sensor 4, and controlled object 5. The upper motion controller 1 receives the actual position information of the controlled object, and compares the target position to obtain the speed command that needs to be issued to the servo drive. Servo drive 2 receives the speed command from 1 and performs coordinated control of position and speed according to whe...

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Abstract

The invention relates to a control method of a servo motor. The control method of the servo motor comprises the steps that when a servo driver receives a rotating speed instruction given by an upper motion controller, and the rotating speed instruction is not zero, the servo driver works in a rotating speed closed-loop control mode, receives the rotating speed instruction of the upper motion controller, and controls a controlled object to rapidly and stably arrive at a target position; when the rotating speed instruction is set to be zero, the servo driver works in a motor position closed-loop control mode, a result obtained through calculation of a position loop serves as an actual rotating speed instruction, and the controlled object can be fixed to the target position. Influence of rotating speed feedback value fluctuation on a control result is eliminated, and shakes of the controlled object are prevented.

Description

Technical field [0001] The invention relates to a servo motor control method. Background technique [0002] Servo drives are more and more popular in the field of motor servo control as control and power conversion devices. Receive the speed command from the upper motion controller and drive the servo motor to make the controlled object reach the target position. [0003] Servo drives generally adopt the speed control mode, that is, the speed and current double closed-loop control method. This method has the advantages of wide speed range, good dynamic performance, and high precision. This control method uses current as the inner loop, speed as the outer loop, and outside the speed. The output of the loop is used as the input of the current inner loop, and the control method is the existing technology, and the specific technical details will not be introduced. Servo motors generally use resolvers or encoders as speed sensors. The error, sampling error and calculation error of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12H02P29/00
Inventor 赵瑞杰田素立王艳领邢珊珊代兴华朱洪浩李军克才鸿飞葛林耀张坤
Owner STATE GRID CORP OF CHINA
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