沈阳农业大学学报Issue(6)：70-76,7.DOI:10.3969/j.issn.1000-1700.2015.06.011
农用车辆座椅悬架的鲁棒H∞控制仿真研究
Research on Robust H∞ Control for the Agricultural Vehicle Active Seat Suspension
摘要
Abstract
Agricultural vehicles often travel on the relatively poor road. When working, the body will produce intense vibrations. The vehicle drivers are subjected to low frequency and high intensity for a long time. They easily suffer from low back pain and lumbar disc herniation. In order to reduce the influence of road excitation on vehicle vibration and human body, a method of using the active suspension system of the vehicle on the farm vehicles is adopted, that is the active measures are used to isolate the ground excitation through the body caused by the bodyˊs vibration. In this paper,based on the agricultural vehicle four-DOF models of "Vehicle-Seat-People", an agricultural vehicle active seat suspension robust H∞ control strategy is proposed by linear matrix inequalities (LMI) technique. MATLAB simulation is employed in the paper. Simulation models are built with white noise as fieldsˊ road excitation, and passive control and robust H∞ control as comparisons. The results showed that under the same input condition,the robust H-infinity control of the active seat suspension than passive suspension control in the vibration control of the vertical acceleration of the body has been significantly improved, and the resonance frequency is avoided. The vibration control of seat suspension has been improved obviously. The above research not only has proved the feasibility of robust H control method of vehicle seat suspension, but also will provide a powerful theoretical basis for the research on the active seat suspension system of agricultural vehicles.关键词
H∞控制/主动座椅悬架/MATLAB/线性矩阵不等式/农用车辆Key words
H∞control/active seat suspension/MATLAB/linear matrix inequalities/agricultural vehicle分类
交通工程引用本文复制引用
张丽萍,郑逢美..农用车辆座椅悬架的鲁棒H∞控制仿真研究[J].沈阳农业大学学报,2015,(6):70-76,7.基金项目
高校杰出青年学者成长计划项目(LJQ2014065)；辽宁省博士启动基金项目(20141130) （LJQ2014065）
