Based on the micro-amplitude vibration equation of friction pendulum systems FPS, the steady-state random responses of FPS to Gaussian white noise actions are forecasted by means of the equivalent nonlinear system method.

• 摩擦摆系统（FPS）的微幅振动方程，运用等效非线性系统法预测了FPS系统对高斯白噪声激励的稳态随机响应。