System and method for dynamic solenoid response adjust control

Details System and method for dynamic solenoid response adjust control System and method for dynamic solenoid response adjust control

2008-01-22

2011-10-18

Norman, Marc (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

C137S002000, C137S012000, C137S468000

Reexamination Certificate

active

08038076

ABSTRACT:
A method is described for controlling a solenoid-operated fluid valve having an output hydraulic pressure that varies in accordance with an input solenoid control current delivered from a drive circuit. A model is provided characterizing the plant dynamics of the solenoid-operated fluid valve and the drive circuit where the model is dependent on at least one operating parameter. The method, during operation, involves measuring the value of the operating parameter and adjusting based on the measured operating parameter value one or more gain constants to be used in a selected control strategy. The model is used in adjusting the gains. Finally, the method involves determining a required solenoid control current according to the control strategy with the now dynamically-adjusted gain constants. The control strategy may be a PI control strategy. The model-based system allows easy migration of the general control strategy to different hardware configurations by developing target system specific data for the model.

REFERENCES:
patent: 5222417 (1993-06-01), Sato
patent: 6588394 (2003-07-01), Zheng
patent: 2011/0010067 (2011-01-01), Rubenbauer et al.
SAE Technical Paper Series, 2007-01-0502, “A Hardware-in-the-Loop Test Bench for Production Transmission Controls Software Quality Validation,” Quan Zheng, Woowon Chung, Ken Defore and Andrew Herman, Delphi Corporation, Reprinted from: In-Vehicle Software & Hardware Systems, 2007 (SP-2126), 2007 World Congress, Detroit, Michigan, Apr. 16-19, 2007.

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