Affiliations: [a] State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an, China | [b] Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou, China | [c] Department of Mechanics, Shandong University of Technology, Zibo, China | [d] State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi'an, China
Abstract: The variation of electrical parameters will inevitably influence the performance of electromagnetic shunt damping. To overcome this, this paper presents an adaptive negative resistance shunt to improve the vibration control performance. A novel electromagnetic isolator is designed, modelled and fabricated. The electromagnetic coupling coefficient is obtained according to the current model, and the corresponding parameters are optimized numerically and verified experimentally. An adaptive negative resistance shunt circuit is constructed. The results show that the proposed adaptive negative resistance shunt can adjust resistance to an optimal value and thus improve the vibration isolation performance of the electromagnetic isolator.
