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In order to solve the problem of excessive understeer of four-wheel -steering vehicle with zero mass-center side-slip angle and proportional control at high speed, using fuzzy logical control method, adding direct yaw moment control of four wheel steering to solve this question. a two DOF four-wheel-steering vehicle model with integrated control of steering angle and yaw moment was established. The...
This paper examines the feasibility of proposed control for independent four-wheel drive electric vehicle. According to vehicle longitudinal velocity and the tire-road condition, a new method to determine the target value, i.e., vehicle yaw rate and side slip angle, is presented. The effectiveness of the designed controller based on sliding mode control is investigated by simulations using a seven-degree-of-freedom...
The well-known single-track linearized model for four-wheel-steering vehicle dynamics is used to design a second-order dynamic decoupling controller. Yaw rate and lateral speed are the outputs to be decoupled, while the rear steering angle and an additive steering angle with respect to the driver command are the control inputs. It is shown that the lateral speed dynamics and the yaw rate dynamics...
Active steering is a newly developed technology for passenger cars to enhance vehicle stability and handling performance. A fractional-order PIlambdaDmu control strategy is applied on active steering vehicle based on a multi-body vehicle dynamic model in this paper and the active control is expressed as a sum of PIlambda and PDmu control. The multi-body vehicle dynamic model using ADAMS can accurately...
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