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当前位置: 首页 > 文章 > 考虑时域硬约束的车辆主动悬架H_∞控制 农业机械学报 2009,40 (4) 11-17
Position: Home > Articles > H_∞ Control of Active Suspensions with Time-domain Hard Constraints Transactions of the Chinese Society for Agricultural Machinery 2009,40 (4) 11-17

考虑时域硬约束的车辆主动悬架H_∞控制

作  者：
宋刚;吴志刚;林家浩
单  位：
大连理工大学运载工程与力学学部
关键词：
车辆;主动悬架;时域硬约束;H∞控制;输出反馈;线性矩阵不等式
摘  要：
提出了考虑时域硬约束条件的车辆主动悬架H∞输出反馈控制器设计方法。基于线性矩阵不等式处理方法,提出并证明了该控制器存在的充分条件。以提高车辆乘坐舒适性为目标,取车身垂直加速度响应为控制输出向量,悬架动挠度、车轮动静载荷比响应和所需控制力为约束输出向量,基于1/4车辆模型进行了主动悬架设计。仿真结果表明,即使车辆模型参数存在一定程度的不确定性,提出的控制策略在提高车辆乘坐舒适性的同时,能很好地兼顾车辆的其他性能要求。
译  名：
H_∞ Control of Active Suspensions with Time-domain Hard Constraints
作  者：
Song Gang1,2 Wu Zhigang1 Lin Jiahao1 (1.Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology,Dalian 116023,China 2.Structural Dynamics Engineering Department,Chongqing Communications Research & Design Institute,Chongqing 400067,China)
关键词：
Vehicles,Active suspensions,Time-domain hard constraints,H∞ control,Output feedback,Linear matrix inequalities
摘  要：
H∞ output feedback control strategy for linear systems with time-domain hard constraints was proposed,and its application to active suspensions was presented.In the framework of linear matrix inequality optimization,sufficient conditions for the existence of such a constrained H∞ output feedback controller,as well as detail steps for the controller designing were given.The proposed approach was applied to design active suspension systems on the basis of a two-degree-of-freedom quarter car model,with vertical body acceleration chosen as controlled outputs and dynamic suspension deflection,relative dynamic tire load,and control force chosen as constrained outputs.Simulation results show that the proposed constrained H∞ controller can achieve a promising improvement on ride comfort,while keeping dynamic suspension deflections,dynamic tire loads and control forces within given bounds,even variations of the vehicle model parameters exist.

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