非线性动力学模型参数回归难度大,常转化为线性模型间接估算,这样违反了统计分析的某些规则,所得参数偏差大。文中结合实例,对比传统方法和MATLAB回归分析工具箱nlintool函数。结果表明,用MATLAB回归分析工具箱计算准确、方法简单,并能显示直观的拟合曲线图。 Nonlinear dynamic model parameters regression is difficult, often converted to a linear model of indirect estimates, so in violation of some of the rules of statistical analysis, the resulting parameter deviation. In this paper, we combine the examples to compare the traditional method and MATLAB regression analysis toolbox nlintool function. The results show that using MATLAB regression analysis toolbox is accurate, the method is simple, and can display intuitive curve fitting.