An online chatter detection and recognition method for camshaft non-circular contour high-speed grinding based on improved LMD and GAPSO-ABC-SVM

[Display omitted] •The local mean decomposition (LMD) algorithm is improved by the mirror extension method, moving average algorithm, and adaptive soft screening stopping criterion.•Considering the influence of the curvature change of the non-circular contour grinding surface on the chatter features...

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Vydáno v:Mechanical systems and signal processing Ročník 216; s. 111487
Hlavní autoři: Zhuo, Rongjin, Deng, Zhaohui, Li, Yiwen, Liu, Tao, Ge, Jimin, Lv, Lishu, Liu, Wei
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.07.2024
Témata:
Camshaft non-circular contour
GAPSO-ABC-SVM
High-speed grinding chatter
Hybrid swarm intelligence optimization algorithm
Improved LMD
Machining dynamics
Improved LMD
Machining dynamics
Hybrid swarm intelligence optimization algorithm
Camshaft non-circular contour
High-speed grinding chatter
GAPSO-ABC-SVM
ISSN:0888-3270, 1096-1216
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Shrnutí:[Display omitted] •The local mean decomposition (LMD) algorithm is improved by the mirror extension method, moving average algorithm, and adaptive soft screening stopping criterion.•Considering the influence of the curvature change of the non-circular contour grinding surface on the chatter features, the signal features are automatically extracted according to the contour curve characteristics.•Considering the shortcomings of a single intelligent optimization algorithm, a new hybrid swarm intelligent optimization algorithm GAPSO-ABC is constructed.•The slight chatter in the incubation period of grinding chatter is effectively identified to avoid the influence on the workpiece.•In the high-speed grinding of camshaft non-circular contour, the detection and recognition method based on improved LMD and GAPSO-ABC-SVM can achieve an accuracy of 97.917 % for chatter recognition. The camshaft is a crucial part of the engine. However, its non-circular contour surface is prone to chatter in high-speed grinding, seriously affecting the processing quality and efficiency. Therefore, an online detection and recognition method for camshaft non-circular contour high-speed grinding chatter based on improved LMD and GAPSO-ABC-SVM is proposed. Firstly, the local mean decomposition (LMD) algorithm is improved by the mirror extension method, moving average algorithm, and adaptive soft screening stopping criterion. Its ability to deal with unsteady vibration signals is verified by simulation signals and experiments. Then, considering the influence of the curvature change of the non-circular contour grinding surface on the chatter features, the signal features are automatically extracted according to the contour curve characteristics. Finally, a recognition algorithm based on GAPSO-ABC-SVM is proposed to improve the accuracy and robustness of high-speed grinding chatter recognition. A new hybrid swarm intelligent optimization algorithm is proposed through the intelligent fusion of Genetic Algorithm (GA), Particle Swarm Optimization (PSO), and Artificial Bee Colony (ABC) algorithms. The support vector machine (SVM) optimization is implemented by the hybrid swarm intelligence algorithm. In the high-speed grinding chatter verification experiment of camshaft non-circular contour, the detection and recognition method based on improved LMD and GAPSO-ABC-SVM can achieve an accuracy of 97.917 % for chatter recognition. And it has good fault tolerance.
ISSN:0888-3270
1096-1216
DOI:10.1016/j.ymssp.2024.111487