一、引言在实用中往往需要传感器的输出与输入间呈线性关系,而且要求环境温度变化所引起的传感器输出误差相当小。但实际上许多种原理的传感器,其输出与输入之间呈非线性关系,而且因环境温度变化而引起的误差也是相当可观的。过去,为了减少传感器的非线性和温度误差,通常采用机械或电气的模拟补偿方法来解决,但这些方法的补偿效果并不理想, I. INTRODUCTION In practice, it is often necessary to have a linear relationship between the output of the sensor and the input, and the sensor output error caused by the environmental temperature change is relatively small. However, in fact, many kinds of sensors have a nonlinear relationship between output and input, and the error caused by the change of ambient temperature is quite considerable. In the past, in order to reduce the sensor nonlinearity and temperature error, usually using mechanical or electrical analog compensation method to solve, but the compensation effect of these methods is not satisfactory,