摘要
针对车载系统行进过程中产生的结构振动,提出被动隔振和主动减振相结合的方法对结构弹性振动和刚体振动进行抑制.一方面,针对结构弹性振动,在车载结构和车体之间安装隔振装置,选择合适的隔振器参数,对车载结构的弹性振动进行隔离.另一方面,结合刚体振动抑制的需求,进一步研究小阻尼隔振器带来的结构低频刚体振动.对隔振器和车载结构形成的新系统采用主动控制方法设计最优控制器,对这一类过驱动控制系统进行主动控制研究.通过主被动控制结合,实现车载结构全频段范围内的振动抑制,能够将系统刚体振动的位移均方根值抑制到无控制时的5%以下.
The on-body equipment induces excessive vibration when vehicle running. A hybrid method of passive and active control is applied for suppressing the vibration. The passive control is in charge of elastic vibration and the active control is in charge of rigid modal vibration, respectively. Vibration isolators are equipped between car-body and on-board device in order to isolate the elastic vibration of the structures. The isolators and the on-board device construct a new rigid vibration system with low natural frequencies. The optimal control algorithm for the new system is designed, and the active control method for the over drive system is analyzed. The vibration on full frequency band is controlled through combining passive and active control methods. The displacement mean square root of vibration of the controlled system is suppressed down to 5% compared with its uncontrolled state.
作者
邵敏强
杨雨田
杨志甫
曾捷
SHAO Minqiang;YANG Yutian;YANG Zhifu;ZENG Jie(State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China;Beijing Institute of Telemetry Technology, Beijing 100076, China)
出处
《力学季刊》
CSCD
北大核心
2018年第1期148-155,共8页
Chinese Quarterly of Mechanics
基金
国家自然科学基金(11402111
U1537102)
江苏省自然科学基金资助项目(BK20140809)
机械结构力学及控制国家重点实验室自主研究课题资助(0113Y01)
机械结构力学及控制国家重点实验室开放课题(MCMS-0516K01)
关键词
车载系统
被动隔振
主动控制
过驱动系统
最优控制
the on-body system
passive vibration isolation
active control
over-actuation system
optimal control
