A polishing machine polishing head pressure control method and system based on PID

By acquiring and matching the control and response data of the polishing machine's grinding head in real time, and dynamically adjusting the PID parameters, the problem of inconsistent lag time in the pneumatic servo control system is solved, thereby improving polishing accuracy and the lifespan of mechanical components.

CN122401281APending Publication Date: 2026-07-17GUANGXI KANGLEI STONE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGXI KANGLEI STONE CO LTD
Filing Date
2026-05-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When existing pneumatic servo control systems process sheet materials with periodic wavy patterns, the airflow transmission lag time is not fixed. This causes the controller's adjustment action to be superimposed on the actual pressure fluctuations, resulting in stripe defects on the sheet material surface and exacerbating the wear of mechanical parts.

Method used

By acquiring the control and response data of the polishing machine's grinding head in real time, feature extraction and matching are performed to determine the local ripple period and the measured response delay, and the PID parameters are dynamically adjusted to achieve compliant control.

Benefits of technology

It improves the control precision of the polishing machine's grinding head, reduces surface defects on the sheet metal, and extends the life of mechanical parts.

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Abstract

本发明涉及数控技术领域,具体涉及一种基于PID的抛光机打磨头压力控制方法及系统,该方法包括:获取抛光机打磨头的控制量数据和响应量数据,对控制量数据和响应量数据中的特征点进行筛选,得到控制量事件集合和响应量事件集合;针对控制量事件集合和响应量事件集合中事件的关联关系确定有效事件匹配对以及有效事件匹配对的实测响应延迟;基于所有的有效事件匹配对的周期关系得到局部波纹周期,基于实测响应延迟和局部波纹周期的占比关系确定被动保持权重,利用所述权重动态更新PID参数。本发明旨在对控制量和响应量的动态延迟关系进行量化,实现对PID参数的动态更新,提高对抛光机打磨头的控制精度。
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