Browse Publications Technical Papers 2001-01-0484
2001-03-05

A New Electric Current Control Strategy for EPS Motors 2001-01-0484

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.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

An EPS Control Strategy to Improve Steering Maneuverability on Slippery Roads

2002-01-0618

View Details

TECHNICAL PAPER

Implications of 42V Battery Power on the Design of Motors for Electric Power Steering System

2000-01-3068

View Details

TECHNICAL PAPER

An EPS Control Strategy to Reduce Steering Vibration Associated with Disturbance from Road Wheels

2006-01-1178

View Details

X