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.

A pressure control method of shift was proposed for the dry dual clutch transmission.The pressure control model of dry dual clucth was established,and shift strategy in different stages of shift process was proposed. The clutch target torque and cylinder target pressure in different stages of shift process were obtained based on shift jerk,and the pressure control of dry dual clutch was realized. The validity of shift pressure control was verified through the real vehicle shift tests.The speed changed gentlely without distinct impact in the real vehicle shift tests.The results show that the shift pressure control of dry dual clutch transmission can meet the requirements of rapidness and ride during the shift process.

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