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实践证明,串联测头等幅电压平均法是提高圆形测尺测量精度的行之有效的方法。本文将用傅立叶级数法在空域中对这种方法进行理论分析并介绍它在测量中的应用。一、理论分析(一)串联双测头补偿误差的分析如图1所示,1和2是两个在测尺外圆线距为△x 的串联测头。当圆形测尺以某一线速度绕安装中心旋转时,测头1中的信号电压为
Practice has proved that a series of equal-head voltage measurement method is to improve the measurement accuracy of circular measuring ruler effective method. This paper will use Fourier series method in the airspace of this method for theoretical analysis and introduce its application in the measurement. First, the theoretical analysis (A) series double probe compensation error analysis shown in Figure 1, 1 and 2 are two in the measuring scale cylindrical distance △ x series probe. When a round ruler rotates around the installation center at a certain linear velocity, the signal voltage in the probe 1 is