Design of Stability Augmentation Systems for Automotive Vehicles

[+] Author and Article Information
A. Y. Lee

General Motors Research Laboratories, Warren, Mich. 48090-9055

J. Dyn. Sys., Meas., Control 112(3), 489-495 (Sep 01, 1990) (7 pages) doi:10.1115/1.2896169 History: Received April 08, 1988; Revised March 01, 1989; Online March 17, 2008


The high-speed cruising stability of passenger vehicles may be enhanced with stability augmentation systems. These systems would modify the driver’s steering command to the vehicle’s front wheels, and steer the rear wheels according to measured vehicle conditions such as its yaw-rate. In this simulation study, an explicit driver model is used in the design of these stability augmentation systems. For ease of implementation, only low-order controllers are synthesized using parameter optimization. The high-speed, straight-line stability of a passenger vehicle in a cross-wind is simulated to evaluate steering performance with these controllers. Our results show that stability augmented steering has the potential to improve the directional stability of passenger vehicles.

Copyright © 1990 by The American Society of Mechanical Engineers
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