横向互联空气悬架车身高度调节模糊控制  

Fuzzy Control of Body Height Adjustment for Vehicles with Laterally Interconnected Air Suspension System

作　　者：琚龙玉[1] 任世恒 周扬扬[2] 李美[3] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]江苏大学机械工程学院,江苏镇江212013 [3]海南大学机电工程学院,海口570228

出　　处：《重庆理工大学学报（自然科学）》2016年第9期3-9,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51575241);国家自然科学基金青年科学基金资助项目(51305111);江苏省普通高校研究生科研创新计划项目(KYLX_1058)

摘　　要：为解决横向互联空气悬架因结构特点难以充分发挥车身高度调节优势的问题,构建了专门适用于横向互联空气悬架车身高度调节控制策略。针对系统非线性与时滞性引起的车身高度超调现象,设计了车身高度模糊控制器。整车采用2个二维模糊控制器对前后空气弹簧进行控制:前空气弹簧控制输入以目标高度为基准,解决调节过程中超调明显等问题;后空气弹簧控制输入以前空气弹簧处实际车身高度变化为基准,提高高度调整过程中车身姿态的稳定性。结果表明:前后控制器分工协作不仅有效解决了调节过程中出现的超调现象问题,而且保证了车身姿态的稳定性。In order to overcome the defect or difficulty of making full use of height adjustment due to structure characteristics of laterally interconnected air suspension,body height adjustment strategy specific for laterally interconnected air suspension was established. To solve the problem of overshoot caused by the nonlinearity and time lag of air suspension system during height adjustment,fuzzyheight controllers were designed. Two two-dimensional fuzzy controllers were applied respectively to control the front and rear air springs： the input of the front controller was determined by target height which can improve the precision of adjustment,while the input of rear controller was determined by the actual body height in front air spring,thereby enhancing the stable performance problem of body posture during height adjusting. The results show that the front controller is in collaboration with the rear controller. Also,the problem of overshoot is alleviated and the body posture keeps stable.

关 键 词：空气悬架 横向互联 车身高度调节 车身姿态 模糊控制 

分 类 号：U463.334.2[机械工程—车辆工程] TP272[交通运输工程—载运工具运用工程]