Z-力敏传感器分段线性化法补偿  

Segmented linear compensation method of Z-force sensor

作　　者：江东[1] 杨嘉祥[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,哈尔滨150040

出　　处：《仪器仪表学报》2010年第2期358-364,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(50777014)资助项目

摘　　要：设计Z-型力传感器的工作电路,给出了力数字传感器输出标准值。通过单片机编程实现分段线性化的方法进行非线性补偿;对于温度补偿采用不同的补偿数据;对于分散性采用标度变换的方法;对于零点漂移采用测量加载频率和空载频率差进行判断,并通过程序判断进行锁定的方法。实验结果表明,设计的Z-型力传感器的输出与期望的线性输出的最大引用误差小于±0.5%,满足一般测量要求,对于Z-型力数字传感器的批量化生产具有现实意义。The circuit of Z-force sensor is designed;the standard output value of digital force sensor is given.Nonlinear compensation is realized using the method of segmented linearization through monolithic microcomputer program.Temperature compensation is realized using different compensation data and the dispersion is solved by the method of scale conversion.The zero drift error is decreased by measuring the difference value between load application and no-load application and using locking method through program discrimination.Experimental result shows that the maximum error between the actual output of the Z-force sensor and its expected linear output is less than ±0.5%,which meets the requirement of common applications.The proposed method has practical value for large scale manufacture of Z-force sensor.

关 键 词：力传感器 非线性补偿 零点漂移补偿 单片机 

分 类 号：TH73[机械工程—仪器科学与技术]