摘要
针对含间隙碰撞振动的机械系统由于参数的改变,产生分叉和混沌运动,造成原稳定运行的系统产生异常振动时的故障消除方法展开研究.用外加正弦驱动力抑制混沌运动.提出了一种外加驱动力参数调节算法.该算法以原系统稳定运行时的可测状态量为希望目标,根据实际输出与希望目标的误差值,实时产生并逐步微调节至所需外加驱动力.通过对一个典型含间隙往复碰撞模型的数值仿真,检验了该方法的有效性.
This paper studies how to suppress the abnormal vibration in a dynamic system with clearance. The abnormal vibration contains the bifurcations or chaotic motion due to the change of some parameters of the nonlinear system. This paper proposes a method to suppress chaotic motion by applying an external periodical force to the system. The periodical force is adjusted according to some real-time algorism related to an error between real-time states and the states when the system is stable. This method has been applied to a two-degree-freedom impact vibration system. With numerical simulation, the effectiveness of the method is demonstrated.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第9期4038-4043,共6页
Acta Physica Sinica
基金
浙江省自然科学基金(批准号:502144)
浙江省教育厅科研计划项目(批准号:20040459)资助的课题.~~
