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| Research on Subsection Linear Torque-Curren Model of a Magnetorheological Fluids Actuator |
| WEN Ci,SONG Ai-guo,WANG Ai-min |
| Remote Measurement and Control Key Lab of Jiangsu Province, School of Instrument Science & Engineering, Southeast University, Nanjing, Jiangsu 210096, China |
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Abstract A magnetorheological fluid (MRF) actuator controlled output torque through input current. Exact knowledge of the relationship between the torque and current was the key. A novel subsection linear torque-current model considering hysteresis was presented. The torque formula of cylindrical MRF actuator based on the Bingham plastic model was derived. The magnetic properties of ferromagnetic materials and MRF were studied. A hysteresis behavior was observed in the torque-current experimental curve. The validity of the subsection linear model is verified by comparison the quadratic-multinomial model, subsection linear model and experimental data.
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2011, Vol. 32 
