Parametric optimization design of rotary vibration control device

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (17) : 197-203.

XU Xun, CHEN Hao, ZHU Yashan, TIAN Kejing, LIN Tingcan

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Abstract

Here, aiming at the problem of limited stroke of linear AMD, the concept of “rotary” was introduced.Combined with the driving mode of linear electromagnetic AMD, the electromagnetic driven rotary vibration control device (RVCD) was proposed.RVCD could provide active control force to a structure by using a mass block rotating on its orbit to reduce vibration response of a civil engineering structure under external interferences during its service.Based on Lagrange equation, the mechanical model of the structure-RVCD coupled system was established.Through the dimensionless treatment and global coordinate transformation, the system was converted into a simplified cascade canonical system.The sliding mode control algorithm (SMCA) was used to design this nonlinear system’s controller.The numerical simulation verified the good control effect and robustness of the structural-RVCD coupled system under conditions of uncertain parameters and external disturbances.The simulation results showed that the vibration reduction effect of the controller is insensitive to variation of RVCD physical parameters, RVCD can effectively solve the stroke problem of linear AMD.Finally, aiming at the problem of multi-parameter choosing in SMCA, the objective function was constructed from the perspective of AMD doing negative work, and an optimization method based on PSO was proposed.The optimized results showed that RVCD can effectively bear input energy of a civil engineering structure to reduce its seismic responses.

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rotary vibration control device (RVCD) / sliding mode control algorithm (SMCA) / particle swarm optimization (PSO) / parametric optimization

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XU Xun, CHEN Hao, ZHU Yashan, TIAN Kejing, LIN Tingcan. Parametric optimization design of rotary vibration control device[J]. Journal of Vibration and Shock, 2021, 40(17): 197-203

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