1某位移传感器,在输入量变化5mm时,输出电压变化为300mV,求其灵敏度。2测得某检测装置的一组输入输出数据如下:试用最小二乘法拟合直线,求其线性度和灵敏度;下页上页x0.92.53.34.55.76.7y1.11.62.63.24.05.03试求下列一组数据的各种线性度:1)理论(绝对)线性度,给定方程为y=2.0x;2)端点线性度;3)最小二乘线性度。下页上页x123456y2.204.005.987.910.1012.054试计算某压力传感器的迟滞误差和重复性误差(工作特性选端基直线,一组标定数据如下表示)下页上页行程输入压力×105Pa输出电压(Mv)(1)(2)(3)正行程2.0190.9191.1191.34.0382.8383.2383.56.0575.8576.1576.68.0769.4769.8770.410.0963.9964.6965.2反行程10.0964.4965.1965.78.0770.6771.0771.46.0577.3577.4578.44.0384.1384.2384.72.0191.6191.6192.01解:601051030033XUk返回2解:带入数据得:bkxy)(bkxyiii22)(iiiiiixxnyxyxnk222)()(iiiiiiixxnyxxyxb68.0k25.0b返回拟合直线灵敏度0.68,线性度±7%∴25.068.0xy%7535.0%100maxFSLyL238.0135.0216.0311.04126.05194.06返回3解:①理论线性度:②端点线性度:由两端点做拟和直线中间四点与拟合直线误差:0.170.160.110.08所以,%4.005.126205.12%100maxFSLyL23.097.1xy%41.105.1217.0%100maxFSLyL返回③最小二乘线性度:所以,98.110541.208212191623.422154.1826)(22iiiiiixxnyxyxnk09.010559.9212191654.1822123.4291)()(222iiiiiiixxnyxxyxb09.098.1xbkxy返回)(bkxyiii07.0105.0205.0311.0411.0508.06%09.005.1211.0%100maxFSLyL返回4解:①%1005.0maxFSHyH5.11maxH3.12maxH8.13maxH%08.01H%07.02H%09.03H②%11.0%1007.9651.1%100maxFSRyR返回