南京航空航天大学学报2012，Vol.44Issue(1)：43-49,7.
基于EKF方法的橡胶隔震支座参数识别实验研究
Experimental Study on Parameter Identification of Non-Linear Hysteretic Rubber-Bearing Isolators Using EKF Method
摘要
Abstract
The Bouc-Wen model is investigated to represent the hysteretic behavior of rubber-bearing isolators. The model is simplified by reducing the hysteretic parameters using the suggested values of other scholars. Three models with different amount of parameters are established to describe the nonlinear character of the rubber-bearing isolators. Further, experimental tests using a particular type of rubber-bearing isolator (GZN110) are conducted. Based on experimental vibration data measured from sensors, the extended Kalman filter (EKF) method is used to identify the model parameters. Different excitation scenarios, I. E. , different earthquakes, and the Bouc-Wen models with different amount of parameters are considered. The estimated parameters are identical, and the identified displacements match the experimental ones well under different excitations. Experimental results demonstrate that the Bouc-Wen model is capable of describing the nonlinear behavior of rubber-bearing isolator, the simplifying model is reasonable, and the EKF approach is quite effective for parameter identification of nonlinear hysteretic rubber-bearings.关键词
橡胶隔震支座/迟滞模型/参数估计/Bouc-Wen模型/广义卡尔曼滤波Key words
rubber-bearing isolator/ hysteretic model/ parameter identification/ Bouc-Wen model/ extended Kalman filter分类
自科综合引用本文复制引用
尹强,周丽..基于EKF方法的橡胶隔震支座参数识别实验研究[J].南京航空航天大学学报,2012,44(1):43-49,7.基金项目
国家自然科学基金(11172128)资助项目 （11172128）
国家自然科学基金国际(地区)合作与交流(61161120323)资助项目 （地区）
江苏省"六大人才高峰"(2010-JZ-004)资助项目. （2010-JZ-004）
