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Frontiers of Mechanical Engineering >> 2015, Volume 10, Issue 4 doi: 10.1007/s11465-015-0367-5
A pre-compensation method of the systematic contouring error for repetitive command paths
State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract
For a repetitive command path, pre-compensating the contouring error by modifying the command path is practical. To obtain the pre-compensation value with better accuracy, this paper proposes the use of a back propagation neural network to extract the function of systematic contouring errors. Furthermore, by using the extracted function, the contouring error can be easily pre-compensated. The experiment results verify that the proposed compensation method can effectively reduce contouring errors.
Keywords
contouring error ; pre-compensation ; motion control system ; back propagation (BP) neural network
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