This paper presents the development of a transmission closed loop pressure control system. The objective of this system is to improve transmission pressure control accuracy by employing closed-loop technology. The control system design includes both feed forward and feedback control. The feed forward control algorithm continuously learns solenoid P-I characteristics. The closed loop feedback control has a conventional PID control with multi-level gain selections for each control channel, as well as different operating points. To further improve the system performance, Robust Optimization is carried out to determine the optimal set of control parameters and controller hardware design factors. The optimized design is verified via an L18 experiment on spin dynamometer. The design is also tested on vehicle.
Closed Loop Pressure Control System Development for an Automatic Transmission
Sae Technical Papers
SAE World Congress & Exhibition ; 2009
2009-04-20
Conference paper
English
Closed loop pressure control system development for an automatic transmission
Automotive engineering | 2009
|2009-01-0951 Closed Loop Pressure Control System Development for an Automatic Transmission
British Library Conference Proceedings | 2009
|Closed-loop pressure control in transmission applications
British Library Conference Proceedings | 2015
|Closed loop pressure control in transmission applications
Automotive engineering | 2015
|