摘要
该文研究了一种汽车模糊自适应控制方法,并借助于一个二自由度的汽车动力学模型,探讨了该模糊自适应控制技术在汽车车身主动减振方面的控制问题。在测得汽车垂直振动强度,行驶速度等条件下,在保持各个状态变量和控制量的模糊集数量不变的情况下,通过自动调整模糊集的相应大小与相应中央位置,仿真研究表明,该自适应模糊控制器使汽车在不同路面波度大小,行驶速度等情况下的车身振动强度均能大幅度下降,达到主动减振的目的。其原理与方法可用于研制简单可靠的模糊控制主动悬架。
An adaptive fuzzy control technique is developed in the paper and is investigated to actively control vibrations of an automotive body based on a 2 - degree - of freedom dynamic model. After getting the measuring data about vertical vibrations of the body and velocity of the vehicle,and under the conditions of keeping the fuzzy set number of the state variables and force control invariant, the fuzzy set＇s scopes and their corresponding centers can be self- adjusted. By computer simulation it is found that vibrations of the vehicle body can always be greatly reduced by using this adaptive fuzzy control technique, no matter how the road surface wave and traveling speed of the vehicle are. It means that the principle and method of the control technique can be used to develop a new active suspension device for cars.
出处
《计算机仿真》
CSCD
2006年第5期234-237,共4页
Computer Simulation
基金
福建省自然科学基金(E0110014)
福州大学科技发展基金和福州大学人才启动基金
关键词
模糊自适应控制
汽车振动
主动控制
仿真
Adaptive fuzzy control
Automotive vibration
Active control
Simulation
