Fuzzy Logic Controller Designing of an Active Roll Control System for Medium and Large Size Vehicles
Fuzzy Logic Controller Designing of an Active Roll Control System for Medium and Large Size Vehicles
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DOI：
10.4028/www.scientific.net/amm.110-116.4845
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发表时间：
2011-10
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影响因子：
--
通讯作者：
Peiman Hajishafieiha
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文献类型：
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作者：
Peiman Hajishafieiha
滚转/行驶权衡是车辆动力学家长期面临的挑战。实现更好的行驶性能几乎不可避免地导致车辆的侧倾增加。这种主要由操纵引起的侧倾运动导致不期望的操纵特性，并随后导致更高的侧翻风险。本文分析了使用主动侧倾控制系统（ARC）与模糊逻辑控制器（FLC），以改善操纵性，而不牺牲乘坐舒适性。用于减小车辆的侧倾角的逻辑是根据车辆的速度和转向角，通过线性致动器在悬架系统上施加一些力。这些力围绕滚转轴产生一个力矩，从而减小滚转角。所提出的模糊逻辑控制器是一个反馈控制器，它输出关于滚转轴的校正滚转力矩。采用这样的控制系统的效果进行评估，通过计算机模拟。然后考虑底盘的扭转刚度，以考虑大型车辆的独特性能。模糊逻辑控制器的仿真结果是非常有前途的，并表明侧倾性能显着改善相比，没有ARC的车辆。
The roll / ride trade-off is a long-standing challenge to vehicle dynamicists. Achieving better ride performance almost inevitably leads to increased roll of the vehicle. This roll motion, mostly induced by maneuvering, leads to undesirable handling characteristics and subsequently higher risk of rollover. This paper analyses the use of an Active Roll Control (ARC) system with a Fuzzy Logic Controller (FLC) for improving the handling without sacrificing the ride comfort. The logic for reducing the roll angle of the vehicle is to have some forces exerted by linear actuators on the suspension system, depending on the velocity and steering angle of the vehicle. These forces create a moment about the roll axis which decreases the roll angle. The proposed Fuzzy logic controller is a feedback controller which outputs the correcting roll moment about the roll axis. The effects of employing such a control system are evaluated through computer simulation. Torsional stiffness of the chassis is then taken into consideration to account for unique properties of large-size vehicles. Simulation results with Fuzzy logic controller are very promising and show that the roll performance is significantly improved compared to the vehicle without ARC.