1996 Volume 1996 Issue 3 Pages 501-505
In locking up torque converter, there exists shift shock according to lockup pressure and this shift shock degrades shift quality. To enhance the lockup shift quailty, the closed-loop lockup controller is necessary. Th high-order modeling of hydraulic lockup system is constructed including hydraulic circuit and power transmission system. The lockup closed-loop controller tracking the desired engine and turbine speed difference trajectory is designed. In this lockup controller, Time Delay Control and optimization technique on setting control parameters are used.
