一、问题的提出在数字显示的仪表里,数字表头的输入电压和数字指示是严格线性的(图1)。可是在测量时,多数情况由于敏感元件(如光电器件)的非线性,造成表征物理量的电压与被测物理量之间的非线性(图2),产生测量误差。为了保证精度进行线性校正是必要的。 First, the question raised In the digital display of the instrument, the digital meter input voltage and digital indication is strictly linear (Figure 1). However, in the measurement, the measurement error is generated in most cases due to the non-linearity of the sensitive components (such as optoelectronic devices), resulting in the non-linearity between the voltage representing the physical quantity and the measured physical quantity (Figure 2). In order to ensure the accuracy of linear correction is necessary.