Abstract
Several studies exist on topics of semi-active suspension and vehicle cruise control systems in the literature, while many of them just consider actual road distortions and terrain characteristics, these systems are not adaptive and their subsystems designed separately. This study introduces a new method where the integration of look-ahead road data in the control of the adaptive semi-active suspension, where it is possible to the trade-off between comfort and stability orientation. This trade-off is designed by the decision layer, where the controller is modified based on prehistorical passive suspension simulations, vehicle velocity and road data, while the behavior of the controller can be modified by the use of a dedicated scheduling variable. The adaptive semi-active suspension control is designed by using Linear Parameter Varying (LPV) framework. In addition to this, it proposes designing the vehicle velocity for the cruise controller by considering energy efficiency and comfort together. TruckSim environment is used to validate the operation of the proposed integrated cruise and semi-active suspension control system.
Highlights
Vehicle suspension has been a trending research topic for a long time due to its important role in road damage, ride comfort, vehicle safety and stability and overall performances of the vehicle
G expresses the quarter-car control-oriented model defined in (14), K denotes the designed Linear Parameter Varying (LPV) controller characterized with the scheduling variable ρ responsible for control reconfiguration, u is the control input, y is the measured output, n is the measurement noise, z represents the performance outputs and w is the road disturbance
This paper proposed a new method with the integration of look-ahead road data in the control of the adaptive semi-active suspension, where it is possible to design a trade-off between comfort and stability with the decision layer
Summary
Vehicle suspension has been a trending research topic for a long time due to its important role in road damage, ride comfort, vehicle safety and stability and overall performances of the vehicle. The classic semi-active suspension control strategy is the skyhook damping control, which was first introduced by Reference [1]. There are many studies, which have been considered the skyhook control strategy due to its simplicity to achieve comfort requirement [3,4,5,6] While it improves ride comfort, it is limited to improve road-holding performance. According to the detailed literature review [13,14,15,16,17,18], they do not consider the integration of velocity design, oncoming road conditions and the trade-off between vehicle safety and driving comfort simultaneously. This study introduces a new method where the integration of look-ahead road data in the control of the adaptive semi-active suspension.
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