基于磁流变减振器的飞机起落架模糊控制研究
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摘要
对磁流变减振器作为飞机起落架减振器的数学模型进行研究,得到其运动微分方程和状态空间方程。基于模糊控制的思想,建立位移、速度-控制力模糊控制器,得到系统控制力,应用模糊控制技术产生控制电流,经模糊半主动控制器产生磁流变阻尼控制电流,驱动磁流变减振器,实现减振模糊半主动控制。仿真结果显示采用模糊控制起落架的弹性支撑和非弹性支撑的位移峰值、速度峰值、加速度峰值以及标准差都大幅度减小,效果接近于LQR,说明该磁流变减振器采用模糊控制算法能够在飞机滑跑过程中起到很好的缓冲减振作用。
Based on the MR damper,theoretical model of the landing gear damper was investigated.The dynamics differential equation and state-space equation were deserved.The displacement,velocity-control force fuzzy controller was constructed based on the fuzzy control,which exported system control force.With the fuzzy control theory,a current was generated and it was entered fuzzy semi-active controller to export the control current which was used to drive the MR damper.Mitigating vibration was realized with the semi-active control.The simulation results show that the peak of displacement,velocity,acceleration and the standard deviation of landing gear elastomeric and non-elastomeric support are largely decreased,and the control performance closes to LQR.The MR damper with fuzzy control algorithm can effectively mitigate vibration during the aircraft sliding.
Based on the MR damper,theoretical model of the landing gear damper was investigated.The dynamics differential equation and state-space equation were deserved.The displacement,velocity-control force fuzzy controller was constructed based on the fuzzy control,which exported system control force.With the fuzzy control theory,a current was generated and it was entered fuzzy semi-active controller to export the control current which was used to drive the MR damper.Mitigating vibration was realized with the semi-active control.The simulation results show that the peak of displacement,velocity,acceleration and the standard deviation of landing gear elastomeric and non-elastomeric support are largely decreased,and the control performance closes to LQR.The MR damper with fuzzy control algorithm can effectively mitigate vibration during the aircraft sliding.
引文
【1】Yadav D,Ramamoorthy R P.Nonlinear Landing Gear Be-havior at Touchdown[J].Journal of Dynamic System,Measurement,and Control,1991,133:667-682.
【2】Mc Gehee J R,Carden H D.Improved aircraft dynamic re-sponse and fatigue life during ground operations using anactive control landing gear system[C]//AIAAAircraft Sys-tems and Technology conference,1978.
【3】Mehdi Ahmadian.On the Isolation Properties of Semi activeDampers[J].Journal of Vibration and Control,1995,5(2):217-232.
【4】贾玉红,武晓娟.基于磁流变缓冲器的飞机起落架模糊控制[J].北京航空航天大学学报,2007,33(11):1264-1267.
【5】Spencer J,Dyke B F,Carlson J D,et a1.Phenomenon logi-cal model for MR damper[J].Journal of Engineering Me-chanics,1997,123:230-238.
【6】Foister R T.Magnetorheological fluids:US,5667715[P].1997.
【7】徐龙河,周云,李忠献.半主动磁流变阻尼控制方法的比较与分析[J].世界地震工程,2000,16(3):95-100.
【8】王鹏辉,许金余,李为民,等.机场道面不平度功率谱特性研究[J].中外公路,2008,28(3):50-53.
【9】李为民.机场道面表面特性及其动力响应研究[D].西安:空军工程大学,2006.
【10】唐光武,贺学锋,颜永福.路面不平度的数学模型及计算机模拟研究[J].中国公路学报,2000(1):114-117.
【11】刘晖.半主动控制技术在起落架缓冲系统中的应用[D].南京:南京航空航天大学,2001.
【2】Mc Gehee J R,Carden H D.Improved aircraft dynamic re-sponse and fatigue life during ground operations using anactive control landing gear system[C]//AIAAAircraft Sys-tems and Technology conference,1978.
【3】Mehdi Ahmadian.On the Isolation Properties of Semi activeDampers[J].Journal of Vibration and Control,1995,5(2):217-232.
【4】贾玉红,武晓娟.基于磁流变缓冲器的飞机起落架模糊控制[J].北京航空航天大学学报,2007,33(11):1264-1267.
【5】Spencer J,Dyke B F,Carlson J D,et a1.Phenomenon logi-cal model for MR damper[J].Journal of Engineering Me-chanics,1997,123:230-238.
【6】Foister R T.Magnetorheological fluids:US,5667715[P].1997.
【7】徐龙河,周云,李忠献.半主动磁流变阻尼控制方法的比较与分析[J].世界地震工程,2000,16(3):95-100.
【8】王鹏辉,许金余,李为民,等.机场道面不平度功率谱特性研究[J].中外公路,2008,28(3):50-53.
【9】李为民.机场道面表面特性及其动力响应研究[D].西安:空军工程大学,2006.
【10】唐光武,贺学锋,颜永福.路面不平度的数学模型及计算机模拟研究[J].中国公路学报,2000(1):114-117.
【11】刘晖.半主动控制技术在起落架缓冲系统中的应用[D].南京:南京航空航天大学,2001.
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