Modeling and Torque Control Against Rate-Dependent Hysteresis of a Magnetorheological Fluid Dual Clutch in an Electric Vehicle Transmission System
Publication Name
IEEE/ASME Transactions on Mechatronics
Abstract
Rate-dependent hysteresis has been an obstacle to the modeling and control of magnetorheological fluid devices, such as magnetorheological fluid clutches (MRFCs) for electric vehicle transmission systems where the clutches are supposed to work in transient states for gear shifting and traction tracking. During these transients, their dynamic features should be figured out, and transmission torque should be controlled with fast response and high accuracy. Thus, a modified Bouc–Wen model with model uncertainty observer is developed in this article to describe the relationship between input currents and output torque of a magnetorheological fluid dual clutch (MRFDC) considering the rate-dependent hysteresis. Then, torque control is implemented by compiling an inverse model feedforward, real-time hysteresis observer, and super-twisting algorithm based on the model. Simulations are conducted to validate the model accuracy, and the control strategy is evaluated by experiments on a MRFDC transmission platform. Experimental results validate that the proposed control strategy can perform good torque control performance in both transient and steady states. This work addresses challenges in the dynamic modeling and transient-state control of a MRFC against the rate-dependent hysteresis.
Open Access Status
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