基于变论域模糊PID控制动力总成主动悬置分析

Analysis of Active Mounting of Powertrain Based on Fuzzy PID Control of Variable Universe

为提高汽车的驾乘舒适度,抑制汽车发动机和路面同时向车身传递振动,减小动力总成悬置在发动机和车身之间的相互移动趋势,利用自适应模糊PID控制算法对动力总成悬置系统进行模糊化处理,同时根据变论域思想,设计系统的输入输出伸缩因子,提出一种变论域自适应模糊PID控制算法。设计仿真控制器,将自适应模糊PID控制和变论域伸缩因子控制相结合,在Matlab/Simulink中进行控制系统的仿真研究,结果表明:在路面和发动机的激励下,变论域自适应模糊PID主动控制相比于自适应模糊PID控制能够更好地抑制悬置的振动,提高整车的舒适性和平稳性。

In order to improve the driving comfort of the car,the automobile engine and the road surface are effectively suppressed from transmitting vibration to the vehicle body,and the mutual movement tendency of the powertrain mount between the engine and the vehicle body is reduced by using the adaptive fuzzy PID control algorithm for the total power.The suspending system is subjected to corresponding fuzzification processing.At the same time,according to the theory of variable domain,the input and output scaling factors of the system are designed,and a variable universe adaptive fuzzy PID control algorithm is proposed.According to the control algorithm,the simulation controller is designed.The adaptive fuzzy PID control and the variable universe scaling factor control are combined.The simulation research of the control system is carried out in MATLAB/Simulink.The results show that under the excitation of the road and the engine,the variable universe adaptive fuzzy PID active control can better restrain the vibration of the mount and improve the comfort and stability of the whole vehicle compared with the adaptive fuzzy PID control.