模糊PID主动悬架对重型货车侧翻稳定性的改善研究  

Investigation into Fuzzy PID Active Suspension to Improve Heavy Truck Roll Stability

作　　者：陈一锴[1] 何杰[2] 张卫华[1] 石琴[1] 陈无畏[1] 

机构地区：[1]合肥工业大学,合肥230009 [2]东南大学,南京210096

出　　处：《中国机械工程》2012年第21期2620-2625,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51078087;51178158);安徽省自然科学基金资助项目(11040606Q39);中央高校基本科研业务费专项资金资助项目(2010HGZY0010);江苏省高校"青蓝工程"优秀青年骨干教师项目;东南大学优秀青年教师资助计划资助项目

摘　　要：提出一种提高重型货车侧翻稳定性的模糊PID自适应主动悬架控制策略。考虑空气悬架的非线性特性,在MATLAB/Simulink平台构建了1/2重型货车-多点随机激励路面四自由度动力学耦合模型;采用模糊推理完成PID主动悬架控制参数的在线调整,并通过阶跃转向、双移线试验分析不同路面等级和侧向加速度下车身侧倾角及侧翻因子的优化效果。仿真结果表明,该策略能在保障两轴重型货车转向能力的同时,有效提高各种转向工况和路面等级下车辆的侧翻稳定性。A self--adaptive fuzzy PID active suspension control strategy was proposed to improve roll stability of a two--axial heavy truck. A 4 DOF model of half truck-- bilateral track random exci- tation road coupled model was developed based on MATLAB/Simulink considering the nonlinearity of air suspensions. Control parameters of PID active suspension were tuned in real--time using fuzzy reasoning and corresponding improvements of roll angle, roll factor was evaluated under step steer- ing, double--lane--change tests. Simulation results indicate that the strategy enhances roll stability under various maneuvers and road levels, while ensuring steering ability.

关 键 词：重型货车 侧翻 模糊PID控制 主动悬架 

分 类 号：U270.2[机械工程—车辆工程]