Nonlinear engine model for idle speed control

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:70844

Livshiz, M; Sanvido, D J; Stiles, S D ^[1]

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1. General Motors Corp., Milford, MI (United States)

This paper describes a nonlinear model of an engine used for the design of idle speed control and prediction in a broad range of idle speeds and operational conditions. Idle speed control systems make use of both spark advance and the idle air actuator to control engine speed for improved response relative to variations in the target idle speed due to load disturbances. The control system at idle can be presented by a multiple input multiple output (MIMO) nonlinear model. Information of nonlinearities helps to improve performance of the system over the whole range of engine speeds. A proposed simple nonlinear model of the engine at idle was applied for design of optimal controllers and predictors for improved steady state, load rejection and transition from and to idle. This paper describes vehicle results of engine speed prediction based on the described model.

• OSTI ID: 70844
• Report Number(s): CONF-941216-; TRN: 95:004350-0031
• Resource Relation: Conference: 33. Institute of Electrical and Electronic Engineers (IEEE) conference on decision and control, Orlando, FL (United States), 14-16 Dec 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the 33rd IEEE conference on decision and control; PB: 4347 p.
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
CONTROL SYSTEMS
DESIGN
MATHEMATICAL MODELS
INTERNAL COMBUSTION ENGINES
CONTROL
NONLINEAR PROBLEMS