Adaptive Backlash Compensation for CNC Machining Applications

Author:

Gan Lu1ORCID,Wang Liuping2,Huang Fei1

Affiliation:

1. School of Mechanical and Electronics Engineering, Suzhou University, Suzhou 234000, China

2. School of Engineering, RMIT University, Melbourne VIC 3001, Australia

Abstract

The mechanical transmission employed inside the computer numerical control (CNC) machine electromechanical system usually has an inherent backlash. As a position-controlled system is commonly used for the electromechanical system, the backlash limits the performance of the motion control system due to its nonlinearity and discontinuity. This paper proposes an effective method to adaptively detect and compensate for the backlash effect in real time, in which the end-effect load position of the CNC machine is estimated and controlled by the position-controlled servo system, in order to eliminate the influence of backlash on the contour path performance. The simulation results obtained from the model of a realistic CNC machine show the successful elimination of the error between the reference and the end-effector position and a significant improvement in the control system performance.

Funder

Suzhou University

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Industrial and Manufacturing Engineering,Control and Optimization,Mechanical Engineering,Computer Science (miscellaneous),Control and Systems Engineering

Reference24 articles.

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3. Heng, M. (2008). Smooth and Time-Optimal Trajectory Generation for High Speed Machine Tools. [Master’s Thesis, University of Waterloo].

4. Virtual CNC system. Part II. High speed contouring application;Erkorkmaz;Int. J. Mach. Tools Manuf.,2006

5. Sencer, B. (2009). Smooth Trajectory Generation and Precision Control of 5-Axis CNC Machine Tools. [Ph.D. Thesis, University of British Columbia].

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