Accuracy Analysis and Error Compensation Technique of the Radiation Thickness GaugeZhu Jianfang, Liang Xuhong Zhu Jianfang, Liang Xuhong Abstract:The measuring principle of a transmissive radiation thickness gauge is introduced briefly. The factors that may influence the accuracy of the gauge are studied and analyzed. To ensure and improve the measurement accuracy,piecewise polynomial curve fitting method combined with table searching and linear interpolation is used to implement the non-linearity compensation. The software table searching method is used to implement dynamic temperature compensation for the measuring air gap,and internal sampling for automatic dynamic adjustment is adopted to implement integrated error compensation. The results of practical operation show that the thickness gauge with above compensations offers wide t range, high measurement accuracy, stable performance, and various applicable areas.[著者文摘]