Side Slip Angle Observation of Steer by Wire System

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Abstract:

Sideslip angle and yaw rate can reflect the essential characteristics of the vehicle steering motion in steer by wire system, and determine the stability of the vehicle, sideslip angle is generally obtained through observation. In order to enhance the stability of the vehicle, hybrid observation method for side slip angle is used, in which dynamic integration is mainly used when the raw rate is relatively small, and extended kalman filtering is mainly used when the raw rate is large. In the observer design, the value and change rate of raw rate is used to calculate a weight coefficient to determine the proportion of two observation method in the observer. The simulation results show that the method can efficiently decrease the observation error of the side slip and improve the observation accuracy.

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594-597

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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