电磁与摩擦制动集成系统的模糊控制
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摘要
考虑到电磁制动系统的非线性和时变性特征,本文提出采用模糊控制方法来控制汽车制动力。本文提出了基于单轮制动模型的电磁制动力模糊控制策略,通过控制电磁线圈通电电流的大小改变电磁制动力矩,进而改变总制动力矩的大小。模糊控制器以车轮滑移率偏差和偏差变化率以及路面附着系数为输入量,以电磁线圈通电电流为输出量。在Matlab/Simulink软件中对集成制动系统的模糊控制方法进行了仿真分析。仿真结果表明,模糊控制可以用于电磁与摩擦制动集成系统,有利于减小制动时间,缩短制动距离。
Electromagnetic braking and friction braking integration system applied to the car is feasible.Reasonable control methods is the key to improve the car braking performance.Fuzzy control was used to control automobile braking force,due to nonlinear and timevarying characteristics of automobile brake system.Fuzzy control strategy based on single wheel braking model was put forward,By controlling the the electromagnetic coil current to change the size of electromagnetic braking torque,and change the size of total braking torque.The wheel slip ratio deviation and the deviation change rate are inputs,the electromagnetic coil electric current is output in the fuzzy controller.The integrate braking system with fuzzy control are simulated and analyzed in Matlab/Simulink software.The simulation results show that fuzzy control can be used in electromagnetic and friction integration braking system,it is beneficial to reduce braking time and shorten the braking distance.
引文
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