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A Performance Improvement in Idle-Speed Control System with Feedforward Compensation for the Alternator Load Current
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English
Abstract
It is well-known that decreasing idle speeds is one of the ways to reduce fuel consumption. On the other hand, it is also well-known that even slight fluctuations of the idle speed cause unpleasant vibrations of the vehicle when this speed is set at low values. Therefore, it is important to create idle-speed control (ISC) systems that undergo less idle-speed fluctuations with respect to various load disturbances, in order to reduce fuel consumption without giving rise to unpleasant vibrations.
The first topic of this paper is a linearized model which derives a new feedforward compensation method for reducing idle-speed fluctuations caused by load distrubances for specific electric loads. The second concerns the control results of our ISC system using this feedforward compensation. The final topic is a discussion of the validity of the parameter values used in the feedforward compensation.
Authors
Citation
Inoue, H. and Washino, S., "A Performance Improvement in Idle-Speed Control System with Feedforward Compensation for the Alternator Load Current," SAE Technical Paper 900777, 1990, https://doi.org/10.4271/900777.Also In
References
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- Washino, S. Inoue, H. “A Study of Idle Speed Control for the relation between PI gain and time lag of Idle Speed Dynamics” JSAE 882085 1988
- Washino, S. “Automobile Electronics” 1989 34 Gordon and Breach Science Publishers
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