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Motor fixed length control system and method

A control method and technology of a control system are applied in the field of realizing precise motor fixed-length control, which can solve the problems of high motor fixed-length control cost, poor accuracy, and control chain length, and achieve precise motor fixed-length control with good accuracy. , high repeatability

Active Publication Date: 2012-02-08
SHENZHEN INOVANCE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a system and method for realizing precise motor fixed-length control in view of the above-mentioned problems of high cost of motor fixed-length control, control chain length and poor accuracy

Method used

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  • Motor fixed length control system and method
  • Motor fixed length control system and method

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Embodiment Construction

[0029] The present invention utilizes the interrupt trigger of the control chip of the motor drive (such as a servo driver or a frequency converter, etc.) itself to realize precise fixed-length control: the input port of the control chip receives an external interrupt trigger signal to trigger the interrupt, and records the current motor angle (such as Encoder readings), and then the control chip removes the number of pulses within the response time from the fixed-length instruction (the number of pulses set by the user), and the processed fixed-length instruction is realized by a general fixed-length algorithm.

[0030] Such as figure 1 Shown is a schematic diagram of an embodiment of the motor fixed-length control system of the present invention. The system is used to realize motor fixed-length control through a motor drive device 10, wherein the motor drive device 10 can be a motor drive device such as a servo driver or a frequency converter. In this embodiment, the motor d...

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Abstract

The invention relates to a motor fixed length control system, which is used for realizing the motor fixed length control through a motor driving device. The motor driving device comprises a control chip, wherein the input port of the control chip is connected to an external interruption signal source and a motor encoder, the control chip calculates the pulse number in the response time according to the motor operation position when receiving interruption triggering signals from the external interruption signal source and calculates and executes the actual fixed length instruction number, and the actual fixed length instruction number is obtained through subtracting the pulse number in the response time from the set fixed length instruction number. The invention also provides a corresponding motor fixed length control method. The interruption signal source is directly accessed through the control chip, and in addition, the pulse number in the response time is subtracted, so the precise motor fixed length control is realized. The motor fixed length control system and the method have the advantages that the accuracy is good, the repeatability is high, and the like.

Description

technical field [0001] The invention relates to the field of motor control, more specifically, to a system and method for realizing precise motor fixed-length control. Background technique [0002] In motor control, servo drives or frequency converters are often used. Existing servo controllers or frequency converters realize the control of the number of operating pulses triggered by external signals in the following way: the host computer (the device whose control link is in the main control position of the system, such as PLC) is used as the master controller, and the external trigger signal It is connected with the host computer, and after triggering, the host computer sends a fixed-length command to the servo drive (the fixed-length command includes the number of pulses the motor runs within the response time), and executes the fixed-length command. The above-mentioned fixed-length command refers to the number of pulses that the motor needs to run set by the user, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/00
Inventor 张英杰童文邹匡两传陈培正
Owner SHENZHEN INOVANCE TECH
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