Closed Loop Pressure Control System Development for an Automatic Transmission 2009-01-0951
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.
Citation: Zheng, Q., Kraenzlein, J., Hopkins, E., Moses, R. et al., "Closed Loop Pressure Control System Development for an Automatic Transmission," SAE Technical Paper 2009-01-0951, 2009, https://doi.org/10.4271/2009-01-0951. Download Citation
Author(s):
Quan Zheng, Jeremy Kraenzlein, Eunjoo Hopkins, Robert L. Moses, Bret Olson
Affiliated:
Delphi Corporation, General Motors Corporation
Pages: 10
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Transmission and Driveline, 2009-SP-2249
Related Topics:
Optimization
Control systems
Transmissions
Pressure
Hardware
Mathematical models
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