磁流变刚度阻尼可控缓冲系统冲击减振控制
Impact Absorbing Control of Magneto-rheological Variable Stiffness and Damping System
作者：董小闵(重庆大学)；余淼(重庆大学光电技术及系统教育部重点实验室，重庆，400044)；廖昌荣(重庆大学光电技术及系统教育部重点实验室，重庆，400044)；陈伟民(重庆大学光电技术及系统教育部重点实验室，重庆，400044)
Author：dongxiaomin(Chongqing University)；Yu Miao(Key Lab for Optoelectronic Technology & Systems under the State Ministry of Education, Chongqing, 400044,China)；Liao Changrong(Key Lab for Optoelectronic Technology & Systems under the State Ministry of Education, Chongqing, 400044,China)；Chen Weimin(Key Lab for Optoelectronic Technology & Systems under the State Ministry of Education, Chongqing, 400044,China)
收稿日期：2008-09-23 年卷（期）页码：2009,41(6):187-192
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：磁流变变刚度；磁流变变阻尼；缓冲器；加速度反馈；LQG
Key words：magneto-rheological variable stiffness;magneto-rheological variable damping;absorber;acceleration feedback;LQG
基金项目：国家自然科学基金（N0.60804018,NO.60574074,No.60674097）、重庆市自然科学基金（CSTC.2008BB6184）和博士后基金（NO.20070420719）
中文摘要
根据磁流变液变阻尼和磁流变弹性体变刚度特点，结合飞机起落架的工作情况，提出了可应用于飞机着陆缓冲系统的磁流变变刚度变阻尼缓冲器结构方案，建立了其变刚度变阻尼控制模型。针对飞机缓冲着陆动力学过程不连续，设计了加速度反馈和LQG控制相结合的控制策略，通过仿真研究了缓冲器和控制策略的有效性。结果表明，基于磁流变自适应变刚度变阻尼缓冲系统，能在不增加缓冲器行程的情况下，降低着陆时的冲击载荷，提高滑行阶段的舒适性。
英文摘要
According to the characteristics of magneto-rheological (MR) variable damping and stiffness and the requirements of landing gear, an absorber consisted of a MR damper and MR elastomer part in parallel is proposed, which can be applied to the landing absorbing system of airplane, Its control model is formulated. Due to the discontinuous dynamics of landing, a hybrid controller based on acceleration feedback control and LQG control is derived.The simulation is carried out to validate the effect of the proposed absorber and the derived control strategy. The results show that the landing gear based on the variable damping and stiffness absorber can reduce the peak value of impact during landing without increasing the stroke of absorber, and improve the ride comfort during sliding compared to the passive gear.
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