弹簧振子实验不确定度的分析研究  

Uncertainty Analysis Experiment of the Spring Oscillator

作　　者：薛小翠[1] 张里荃[2] 高健[1] 孙迎春[1] 

机构地区：[1]东北师范大学,吉林长春130024 [2]吉林大学,吉林长春130012

出　　处：《大学物理实验》2012年第1期64-66,共3页Physical Experiment of College

基　　金：吉林省教育厅精品课;东北师范大学精品课

摘　　要：采用静力伸长法和振动周期法测量并计算弹簧振子的劲度系数,通过分析不确定度,比较了用静伸长法求弹簧劲度系数中逐差法和用最小二乘法作Excel直线拟合这两种数据处理方法的精确性差异,并通过计算得出测量弹簧劲度系数时静伸长精确度高于振动法的结论。实验结果具有一定的理论意义,并对于改进弹簧振子实验过程有重要的指导作用。This paper used the methods of static elongation and vibration measurement cycle of measuring and calculating the spring oscillator strength degree coefficient.Through the analysis of uncertainty,we compared with static elongation algorithm to find strength degree coefficient of spring by differential method and least square method to the two kinds of data processing method to ensure the accuracy of the differences.The calculations measurement with the coefficient of spring static elongation higher than the conclusion of precision vibration.The experimental results have certain theoretical meaning,and for improving the spring days experimental process have important guiding role.

关 键 词：弹簧劲度系数 线性回归 不确定度 相关系数 

分 类 号：O241.1[理学—计算数学]