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将系统动力学与智能控制理论相结合对汽车制动防抱死控制系统进行了研究,利用matlab/Stateflow仿真技术,建立了基于七相位逻辑门限值控制算法的ABS仿真程序,建立了包括车身模型、轮胎模型、制动系统模型在内的七自由度的车辆动力学模型,准确地表达了车辆的动态特性。在实验中以捷达GTX轿车的车辆参数为模型,对其在高附着路面下不同车速的防抱死制动过程进行了仿真,并通过仿真的实验的结果来改变逻辑门限值的选取,进而完善ABS控制算法。该仿真系统的车辆模型参数在经过修改后可适用于不同ABS产品的开发并对ABS与目标车辆的匹配提供了依据。 相似文献
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A directly adaptive fuzzy algorithm is applied in vehicle adaptive cruise control system. The basic principle of the adaptive fuzzy algorithm is analyzed. The initial value of the fuzzy based vector is given by the traditional fuzzy membership. Adaptive law of the adjustable parameters θ is also determined. The directly adaptive fuzzy ACC controller is designed based on Matlab fuzzy toolbox. Matlab-Simulink is adopted to test the function of the adaptive fuzzy ACC controller. The control system is established using a 7 DOF vehicle dynamics model. Simulation results indicate that the principle of the method is correct and it performs well both in cruise and distance keeping. 相似文献
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