代码里有很完整的注释和解释，是小学期课程设计的题目，预报误差法参数辨识-松弛的思想，微分方程组数值解方法，添加噪声处理。-Code, there are very complete notes and explanations Is the topic of the elementary school stage curriculum design, Prediction Error Method for Parameter Identification- the idea of relaxat