油液阻尼器对随机激励的响应研究

THE RESEARCH OF RESPONSE OF OLEO DAMPER EXCITED BY RANDOM EXCITATION

油液阻尼器受指数型高斯色噪声外激励时，活塞在油腔内的运动可用一阶非线性动力学方程描述。在适当扩大了的空间中，其状态是马尔可夫的，通过求解对应的 Ｆ Ｐ Ｋ 方程可得到精确稳态解，即速度响应的概率密度函数。通过数值仿真进行验证是正确的。

The motion of plunger of oleo damper excited by colored Gaussian noise with exponential correlation time is governed by first order nonlinear differential equation. The state is Markov process in appropriate expanded space and the accurate stationary solution, which is the probability density function of velocity response, can be obtained by solving its corresponding FPK equation. The result has been proved by numerial simulation.