Rear wheel steering angle controlling apparatus of four-wheel st

Details Rear wheel steering angle controlling apparatus of four-wheel st Rear wheel steering angle controlling apparatus of four-wheel st

1993-08-27

1996-06-04

Teska, Kevin J.

Boots, shoes, and leggings

180412, 180445, B62D 504

Patent

active

055240798

ABSTRACT:
A control system robust with respect to a vehicle dynamic characteristic variation by a vehicle speed change by estimating an unknown characteristic term in a target yaw rate following system so as to reduce a side slip angle at a transmission time, wherein right and left rear wheels are directly steered using an electric motor controller, and an instruction signal to the motor controller is calculated with a simple calculation using a vehicle speed characteristic estimator with a control amount calculator so that a real yaw rate may follow a target yaw rate calculated by a target yaw rate calculator using respective sensor output values of a vehicle speed sensor, a yaw rate sensor, a steering wheel angle sensor, and a rear wheel steering sensor for each control period.

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Proceedings of the 1988 American Control Conference; vol. 2, 1988, Atlanta, U.S.; pp 904-911; Kamal Youcef-Toumi; Osamu Ito, `A Time Delay Controller for Systems with Unknown Dynamics`.

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