摘要
提出一种基于图形 (像 )库的测量器具动态特性求解新方法。该方法利用图像处理与识别技术首先将测量器具实验曲线与图形 (像 )库中的标准曲线相比较 ,得到与实验曲线相匹配的标准特性函数 ,然后改变标准特性函数中参数 ,逐次迭代计算与实验曲线的相关函数 ,直至其大于规定阈值 ,从而给出表示测量器具动态特性的算子表达式。该方法准确度高 ,适应范围广 ,适合于计算机自动求解各种不同系统的动态特性。
A new method for solving the dynamic characteristic of measurement system based on graph (image) bank (GIB) is proposed. Firstly, experimental curve of measurement system is compared with the standard curve of GIB by means of image processing and recognition technique, the standard characteristic function matched with the experimental curve is then got. Secondly, the parameter of the standard characteristic function are changed, the correlation coefficient with the experimental curve is iteratively computed until it is bigger than the threshold, as a result, the operator expression of the system characteristic is obtained. The method has high accuracy and wide application, especially, it is suitable for automatic solving various system dynamic characteristic with computer.
出处
《计量学报》
EI
CSCD
北大核心
2001年第4期276-280,共5页
Acta Metrologica Sinica
基金
国家自然科学基金 ( 5 9775 0 87与 6 97730 43)
