Study on Control Strategy of Clutch Engagement Based on Fuzzy Control during Vehicle Starting

Characteristics of clutch engagement at different engagement stages were different, so different control methods were used in different stages. At quick engagement stage proportional control was used. Control system of starting acceleration stage was serious non-linear and it was difficult to establish precise mathematical model, so fuzzy control was adopted. At synchronization engagement stage clutch jointed at the biggest speed, and off-on control was used. Characteristics of vehicle starting were different in different conditions, so clutch was controlled by different fuzzy controllers whose control parameters were different. Finally, simulation results show that the strategy can adapt driver´s starting intention and changes of engine parameters and driving environment, and meet requests of vehicle starting smoothly, fast and little wear of clutch. The control results are satisfying.