非线性模型的线性近似条件研究
来源期刊:中南大学学报(自然科学版)1999年第3期
论文作者:王志忠 阳可奇 朱建军
文章页码:13 - 16
关键词:线性近似;容许曲率;非线性强度;容许偏差
Key words:linear approximation; acceptable curvature; nonlinear strength; acceptable bias
摘 要:测量数据处理中不同的非线性模型具有 不同的非线性强度,从而使得一些非线性模型可以线性近似,而另一些选择适当的参数变换后可以线性近似,还有少数不能线性近似.介绍了度量非线性模型和附加 限制条件的非线性模型的非线性强度的方法,提出了判断非线性模型和附加限制条件的非线性模型线性近似的数值标准———容许曲率和容许偏差.此外,还给出了实例,说明以上方法的可行性
Abstract: Because of the differences of curvature and bias between different models, some models can be linear approximately and others can not be. This paper presents a method to measure nonlinearity of the nonlinears models under the restricted condition and also presents a numerical standard for linear approximation-acceptable curvature and bias. And two simple numerical examples are given to illustrate the application of the above methods.