Direct feeding shaft servo parameter optimization method based on dynamic stiffness evaluation

Abstract

The invention relates to a direct feeding shaft servo parameter optimization method based on dynamic stiffness evaluation, and a system. The direct feeding shaft is the concrete object. The method comprises the steps of confirming system performance parameter, and ensuring the normal working of a servo system of a linear motor; gradually increasing speed ring gain, and reading frequency range of each overshoot point of speed ring Bode diagram and the bandwidth data. Through the dynamic stiffness measuring method, the dynamic stiffness frequency spectrogram can be calculated, and the resonance frequency range of the servo system can be determined. With the Bode diagram, the resonance frequency range bandwidth can be determined, and a corresponding electronic filter is disposed in the servo system, and thereby the resonance frequency range can be inhibited. The servo parameter optimization method based on dynamic stiffness evaluation can effectively optimize the direct feeding shaft servo parameter.

Description

technical field [0001] The invention relates to a dynamic stiffness testing method and a servo parameter optimization method, in particular to a parameter optimization method of a direct feed axis. Background technique [0002] Linear motors have the advantages of fast response, high positioning accuracy, no travel limit, and high efficiency. In high-speed and high-precision motion, the feed shaft driven by linear motors does not require intermediate transmission links, and is an ideal feed for realizing direct drive technology. Drive mechanism. However, the unique "zero transmission" mode of this direct drive feed shaft makes load changes, internal disturbances and external disturbances directly act on the working platform without intermediate transmission links, which hinders the further exertion of the advantages of linear motors and also limits their servo performance. Control brings great difficulty. [0003] The technology of improving the anti-interference performan...

AI Technical Summary

Problems solved by technology

However, when using this method to optimize the servo parameters, there are many deficiencies: when there are multiple overshoot points, it is often impossible to accurately judge the resonance point of the feed axis; , it is impossible to determin

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