Ultra-precision lathe motion control method based on fuzzy PID self-tuning calculation

A technology of motion control and self-tuning, which is applied in the field of high-precision control of moving parts and ultra-precision cutting processing, can solve the problems of insufficient precision of ultra-precision cutting, lack of self-tuning, and limited control effect, so as to improve the performance of ultra-precision cutting. Accuracy, optimized output, and the effect of improving positioning accuracy and response speed
CN112486099AActive Publication Date: 2021-03-12INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
Publication Date
2021-03-12

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Abstract

The invention discloses an ultra-precision lathe motion control method based on fuzzy PID self-tuning calculation, and relates to the technical field of ultra-precision cutting processing. The methodmainly comprises the following steps: acquiring preset position information and actual position information of a linear motion guide rail of a lathe as a controlled object; and calculating a control output quantity by adopting a fuzzy PID control algorithm according to the deviation value between the preset position and the actual position and the change rate of the deviation value, and inputtingthe control output quantity into a control system to control the linear motion guide rail to move. A discourse domain parameter self-tuning method is adopted in fuzzy PID control and introduced into the fuzzy PID control, autonomous learning can be achieved, the static and dynamic performance of the ultra-precision lathe guide rail control system is improved, and then the purpose of improving theultra-precision cutting machining precision is achieved.
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Description

technical field

[0001] The invention relates to the technical field of ultra-precision cutting and processing, and more to the technical field of high-precision control of moving parts. Specifically, it relates to a motion control method for an ultra-precision lathe based on fuzzy PID self-tuning calculation. Background technique

[0002] Ultra-precision diamond turning (single point diamond turing, SPDT) is an important equipment in ultra-precision machining. It is often used to process optical components with complex surface shapes or special surface shape requirements, such as gyroscopes for defense cutting-edge products, high-precision flat mirrors / lenses , precision instruments and various components in high-power laser systems. Since the surface topography of such parts is directly related to the relative motion between the tool and the workpiece, the high surface accuracy and high surface quality of such parts require the servo control system of the ultra-precision di...

Claims

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