基于递推最小二乘估计的动力学模型参数识别

动力学建模过程中，模型参数的不确定性和参数的未知变化使得建模精度大为降低。通过对非线性最小二乘估计理论的研究，提出动力学模型参数的最小二乘估计，并设计出相应的估计器，基于现场数据给予模型较为准确的定论。应用于曲柄滑块机构中滑块与滑动面间的摩擦系数的估计，经过较少的迭代次数获得满意的估计效果。为动力学模型参数识别，建立更精确模型提供一个有效的途径。

Parameter Recognition of Dynamic Model on the Recursive Least- square Estimation

It is hardly to obtain a accurate model in the course of dynamic modeling for the uncertainty and the unknown changes of model parameters.In this paper,the recursive last-square estimation for dynamic model has been proposed and the corresponding estimator has also been designed after studing on the non-linear teast squares estimation theory.Then a more accurate conclusion for model parameter can be abained basing on-line data.Finally,it has bee successfaly applied to estimate the friction coefficient betwe...