CLUTCH ENGAGEMENT CONTROL DURING GEAR SHIFTING PROCESS IN AUTOMATED MANUAL TRANSMISSION

Cao Guijun  Ge Anlin  Zheng Lei

(Hydraulic Mechanical Transmission Institution, Jilin University, Changchun 130025)

Qin Guihe

(School of Computer Science, Jilin University, Changchun 130025)

Abstract: To effectively reduce the shock during gear shifting process of automated manual transmission (AMT), the clutch model is necessary to be set up and appropriate control method needs to be found. First with feedback control theory, the state space matrix is solved and the control vector is picked out. Next the clutch spring finger’s displacement and the shock during clutch engagement are calculated. Meanwhile, the engine speed and torque are also showed. Finally comparison between the simulation and the measurement of clutch engagement process reveals that the feedback control can be used to find the suitable engine torque and speed trajectories to better control the Santana2000 equipped with AMT.

Key words: Clutch  Feedback control  Simulation

CLC No: U463.2

Received 20050118, received in revised form 20050807