关键词: AMT；商用车；起步工况；滑模控制

Abstract: This paper focuses on the starting condition of commercial vehicle automated manual transmission (AMT), and proposes a torque control method based on sliding mode theory. The method constructs a sliding mode switching function and a reaching law, so that the system state can quickly approach and finally stabilize in the neighborhood near the sliding mode surface. To solve the chattering problem of sliding mode control, the reaching law adopts a saturation function. Simulation tests are carried out under different load conditions and compared with traditional control methods to verify the control effect, and real-vehicle tests are also conducted. The results show that the proposed method has excellent control performance under vehicle starting conditions.

Key words: AMT; commercial vehicle; launch condition; sliding mode control