TUYỂN TẬP HỘI NGHỊ KHOA HỌC TOÀN QUỐC LẦN THỨ NHẤT ĐỘNG LỰC HỌC VÀ ĐIỀU KHIỂN, 2019
In this research work, a self-power shear-mode magneto-rheological (MR) damper that can replace c... more In this research work, a self-power shear-mode magneto-rheological (MR) damper that can replace conventional passive damper of a front-loaded washing machine is designed and experimentally evaluated. The self-power damper consists of two main components: the damping component and the self-power one. The damping component is composed of an inner housing with a thin wall, on which the coils are wound directly, and an outer housing to cover the coil and to create a closed magnetic circuit of the damper. The gap between the inner housing and the shaft is filled with MR fluid to create damping force. The self-power component consists of magnetized permanent magnets fastened together on the moving shaft and a slotted stator core covered by an outer housing. The coils are wound directly on the slots of the stator core and connected to the coils of the damping component to generate the required current when the shaft moves reciprocally. After an introduction to suspension system for front-loaded washing machine, the configuration of the self-power MR damper for front-loaded washing machine is proposed. Optimization of the proposed self-power MR damper is then performed considering required damping force, off-state friction force, size, power consumption and low cost of the damper. From the optimal results, simulated performance of the optimized MR damper is obtained and a detailed design of the MR damper is then conducted and presented with discussion.
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