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In order to study the driving performance of semi-active suspension vehicle, a detailed multi-body driving dynamics model of the car were established by using SIMPACK software., and a hybrid control strategy was worked out by means of Matlab/Simulink. The Simpack-Matlab co-simulation method was used to analyze the ride ability of semi-active suspension. The result showed that, the semi-active suspension...
In this paper, multi-objective control of a quarter-car suspension system subjected to random road disturbances is studied. The active suspension problem is formulated as a mixed H2/H∞ synthesis problem and solved using linear matrix inequalities. It is first demonstrated that the influence of tire damping on the closed-loop performance can be significant. Then, this result is extended to suspension...
By using dynamic differential force between wheels, lateral motion of the electric vehicle can be controlled with yaw moment. This framework is known as “Direct Yaw-moment Control (DYC)”. In many previous researches, DYC method is applied for increasing the stability, but maneuverability has not been discussed sufficiently. Velocity dependency of the relationship between the steer angle and the vehicle...
This paper presents a feedforward and feedback optimal sliding mode control design of active vehicle suspension system for quarter-car model with two-degree-of freedom. In some given conditions, the random road surface input firstly is formulated as the output variables of an exosystem. Then, by regarding some state variables of the suspension system as virtual control, the optimal sliding mode which...
In this paper, a control strategy of active suspension based on the fuzzy logic control has been investigated. Using incorporating feedback from force sensor at front and rear active suspension system, the control system shows the improvement of the dynamic responses of the vehicle. A multi degree-of-freedom nonlinear model is co-simulated by MATLAB/Simulink and ADAMS/car. The simulation results indicate...
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