【摘要】 由振动系统的运动方程建立了描述系统输入、输出和噪声特性的外源自回归滑动平均 (ARMAX)模型。采用近似极大似然法估计ARMAX模型系数 ,克服了传统极大似然估计方法的高度计算复杂性 ,需要对参数的初值进行猜测的缺点。仿真结果表明本文方法鲁棒性较好。更多还原

【Abstract】 Based on the motion equation of vibrating system,ARMAX model is established,which describes input,output and noise characteristics of the system.An approximate maximum likelihood method is adopted for estimating ARMAX model parameters.The method overcomes some drawbacks such as high computational complexity and need of initial guess of parameter values for traditional maximum likelihood method.Simulation results show that the proposed method exhibits robust properties.更多还原