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本文论述步长联控式数据自动采集原理和数据处理方法,提出拟合直线与拟合曲线在联接点处保持连续与相切的一种实用方法,给出了与另外二种拟合方法的对比图形,列出了这三种不同回归方法的优缺点及适用范围.本方法已成功地应用于材料的拉伸试验、断裂韧性K_(IC)测试及σ_(0.2)系列(诸如σ_(0.1),σ_(0.5)等)的微机自动测试.
This paper discusses the principle of step-by-step automatic control data collection and data processing methods, put forward a fitting line and the fitting curve at the connection point to maintain a continuous and tangent of a practical method is given and the other two methods of fitting Compared with the graphs, the advantages, disadvantages and applicability of these three different regression methods are listed.The method has been successfully applied to the tensile test, fracture toughness K IC testing and σ 0.2 series such as σ 0.1 ), σ_ (0.5), etc.) microcomputer automatic test.