摘要
针对一种新式的变刚度阻尼隔振器,利用NI软硬件平台,搭建半主动控制试验系统。提出一种RMBC(Reference model based control)控制策略,研究半主动隔振系统在线性扫频激励和随机组合激励下的工作特性。试验结果表明,对于扫频激励,半主动隔振系统可以有效地规避共振;对于随机组合激励,半主动系统可以根据当前工况选择最佳输出阻尼。半主动控制试验验证了RMBC控制律的有效性,同时发现一些潜在问题,可为下一步工程应用提供参考。
Based on the NI-CRIO controller and Labview platform,a real-time semi-active control system isestablished for the experimental study of a new variable-stiffness vibration isolator.A new control strategy named RMBC(Reference model based control)is proposed,with which the isolation performance under linear swept excitation andrandom combined excitation is tested.It turns out that the isolator can avoid the resonance response when subjected to sweptexcitations.And under random combined excitation,the semi-active system can select the best output damping adaptivelyaccording to the present working condition.The semi-active isolation test has verified the efficiency of the RMBC strategyand revealed some drawbacks of the system.It has provided a reference for engineering application of the isolators.
作者
李方硕
周俊辉
LI Fang-shuo;ZHOU Jun-hui(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
出处
《噪声与振动控制》
CSCD
2017年第2期188-191,共4页
Noise and Vibration Control
关键词
振动与波
隔振
变阻尼
变刚度
半主动
vibration and wave
vibration isolation
variable damping
variable stiffness
semi-active
