Clutch displacement servo control in gear-shifting process of electric vehicles based on Two-speed DCT

Two-speed dual-clutch transmission (DCT) is an ideal transmission mode for electric vehicles. After analysing the power transmission system of electric vehicles installed with two-speed DCT, this paper constructs the lever spring model of dual dry clutch, torque transmission model of friction plate, and clutch actuator model, and utilizes the models to identify the relationship between torque transmission and release bearing displacement of the clutch. According to the nonlinear features of the clutch, the author proposed the strategy of clutch displacement servo control under the inspiration of single-neuron adaptive PID compensation, which improves clutch control accuracy by intelligent compensation based on mathematical model control. Finally, an actual vehicle test was carried out to verify the effectiveness of the proposed strategy. Suffice it to say that the study provides a reference for the control of electric vehicle transmission system. © 2017 AMSE Press. All rights reserved.