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A New Electric Current Control Strategy for EPS Motors
Technical Paper
2001-01-0484
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
This paper presents a new motor current control strategy for Electric Power Steering (EPS) to reduce current fluctuation. Such current fluctuation may cause undesirable steering torque ripple and acoustic noise, if an inexpensive microprocessor is used. Using a DC-motor, current fluctuation associated with change in the battery voltage, etc., may occur. We have developed a new current control strategy which effectively alleviates current fluctuations of the motor without using higher performance microprocessors. The new controller is based on the estimation of disturbance voltage and compensation for this disturbance voltage. We have bench-tested the performance of this control strategy and confirmed that current fluctuation is reduced below that using conventional PI controller. The PI gain for the proposed controller is the same as that for the conventional controller. Hence, no higher performance processor is necessary because no increased sampling time for the controller is required.
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Authors
Citation
Kurishige, M., Fukusumi, K., Inoue, N., Kifuku, T. et al., "A New Electric Current Control Strategy for EPS Motors," SAE Technical Paper 2001-01-0484, 2001, https://doi.org/10.4271/2001-01-0484.Also In
SAE 2001 Transactions Journal of Passenger Cars - Electronic and Electrical Systems
Number: V110-7; Published: 2002-09-15
Number: V110-7; Published: 2002-09-15
References
- Peter, D. Gerhard, R. “Electric Power Steering - The First Step on the Way to “Steer by Wire”” SAE Paper 1999-01-0401 1999
- Feick, S. et al. “Steer-by-Wire as a Mechatronic Implementation” SAE 2000-01-0823 2000
- McCann, R. “Variable Effort Steering for Vehicle Stability Enhancement Using an Electric Power Steering System” SAE Paper 2000-01-0817 2000
- Kurishige, M. et. al. “A Control Strategy to Reduce Steering Torque for Stationary Vehicles Equipped with EPS” SAE Paper 1999-01-0403 1999
- Kurishige, M. et. al. “A New EPS Control Strategy to Improve Steering Wheel Returnability” SAE Paper 2000-01-0815 2000