주파수 영역에서 비선형 모델변수 규명 메소드를 적용한 현가장치 동특성 규명

A lot of methods to find out non-linear dynamic-characteristic under a given system have been proposed. One method based on frequency domain which examines non-linear parameter is not only relatively less and fast than other methods in calculation, but also removing the noise from experimental data which probably can be generated in experiments because just using data of displacement speed of both ends of a fragment structure can search for the required value. This thesis identifies unknown model parameters of any system by using a general polynomial expression and introduces a method which removes effectively many model parameters generated. It was verified through experiments that which non-linear property was considered, in addition to Damper and Stiffness, when this method of non-linear model parameter is applied to a suspension.