论文部分内容阅读
在电测和自动控制系统中,通常利用各种传感器将不同物理量转变为电信号。传感器的非线性使仪器对信号的显示和分析变得困难,使自动控制系统对信号的加工处理复杂化。为此,我们总是希望在允许的工程误差范围内,尽可能将信号在系统的输入部分进行线性处理。 本文以测温传感器为例对信号的模拟方式线性化、数字和微计算机方式线性化进行叙述。基于同样的数学原理,对其它传感器的非线性处理也是适用的。 众所周知,用线性方程描写输入——输出关系的系统都是线性系统。线性系统必然满足叠加定理和均匀性。
In electrical measurement and automatic control systems, various sensors are commonly used to convert different physical quantities into electrical signals. The nonlinearity of the sensor makes it difficult for the instrument to display and analyze signals, complicating the signal processing by the automatic control system. For this reason, we always hope to try to process the signal in the input part of the system as much as possible within the allowable engineering error. In this paper, the temperature sensor is taken as an example to simulate the signal linearization, digital and microcomputer linearization are described. Based on the same mathematical principle, non-linear processing of other sensors is also applicable. It is well-known that systems that describe input-output relationships using linear equations are linear systems. The linear system must satisfy the superposition theorem and the uniformity.