Artificial intelligent control of torsional vibration with MR variable stiffness variable damping

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (23) : 270-279.

LI Wenfeng1, GE Xinfeng1, XI Jun2, LI Pingyang3, LIU Le1, GAO Jianrong1

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Abstract

Effectively reversing the stiffness control can improve the torsional vibration performance of the system by adjusting the inherent characteristics and resonance frequency of the system. Proper torsional damping adjustment can suppress the amplitude of torsional vibration by dissipating the energy of torsional vibration. For the different influence laws of torsional stiffness and torsional damping on the torsional vibration of transmission systems, a hybrid Taguchi genetic algorithm-based Human-Simulated Intelligent torsional vibration control strategy for magnetorheological (MR) transmission systems with variable stiffness and variable damping was proposed. Firstly, the dynamics model of MR variable stiffness and variable damping transmission system was established. A hybrid Taguchi genetic algorithm was adopted to dynamically seek for the optimal combination of torsional stiffness and torsional damping parameters for MR transmission system under various excitation frequency conditions, and then a human-simulated intelligent controller (HSIC) is designed. Finally, simulation analysis and experimental investigation were carried out. The results indicate that the hybrid Taguchi genetic algorithm-based HSIC with variable stiffness and variable damping can effectively suppress the torsional vibration and significantly improve the output characteristics of the MR transmission system. When the excitation frequency of the test is 3.5Hz, the proposed HSIC system reduces the peak angular displacement and angular velocity of the system by 44%, 48% and 14%, 18% respectively compared to the passive transmission system and the improved skyhook control system. Furthermore, the control performance of the proposed human-simulated intelligent control algorithm is superior to that of the improved skyhook control algorithm.

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Magneto-rheological / variable stiffness and variable damping / hybrid Taguchi genetic algorithm / human simulated intelligent control

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LI Wenfeng1, GE Xinfeng1, XI Jun2, LI Pingyang3, LIU Le1, GAO Jianrong1. Artificial intelligent control of torsional vibration with MR variable stiffness variable damping[J]. Journal of Vibration and Shock, 2024, 43(23): 270-279

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