Comparison of dynamic models based on backbone curve for rotary magneto-rheological damper. (July 2020)

• Record Type: Journal Article
• Authors: Yu, Jianqiang; Dong, Xiaomin; Sun, Shuaishuai; Li, Weihua
• Other Names: Jin Yan guest-editor.; Wang Hongguang guest-editor.; Dai Jian S guest-editor.
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 234:Number 14(2020)
• Page Start: 2732
• Page End: 2740
• Publication Date: 2020-07
• Subjects: Magneto-rheological -- dynamic model -- backbone curve -- phase lag method -- hysteresis division method; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/0954406219856392
• Languages: English
• ISSNs: 0954-4062

Abstract

To realize the accurate control of magneto-rheological system, the nonlinear dynamic model as the joint of damper and control strategy is worthy of being investigated. In this study, the modeling methods based on the backbone curve are proposed to portray the dynamic characteristics of magneto-rheological damper. The modeling methods contain the phase lag method and the hysteresis division method. Six novel algebraic models are deduced from the two methods and compared systematically. The parameters identification of models is conducted by the nonlinear least square method. The nonlinear least square optimization problem is solved by the Levenberg–Marquardt algorithm. The evaluation indexes including the root-mean-square error, mean deviation and computation time are calculated to evaluate the accuracy and feasibility of the novel models. Results show that the modeling methods and their models can describe the nonlinear hysteretic characteristics with feasibility and accuracy.