基于傅里叶变换下的水银测量元件的特性研究

在涉及性能不完善、存在一定误差的测量装置问题中,往往会采取加入逆系统。在考虑一个测量液体温度的装置(例如水银温度计)时,由于测量元件(水银)的响应特性,系统无法及时对温度的变化做出瞬时响应,因此通常将它作为一个线性时不变系统来建模研究。对该系统进行误差分析,从而增加系统的精确度和灵敏性。

Aiming at the problems related to the measuring devices with imperfect performance and certain errors,we tend to add the inverse system.When a device for measuring the temperature of a certain liquid(such as the mercury thermometer)is considered,due to the response characteristics of the measuring element(mercury),the system is unable to make an instantaneous response to the change of temperature in time.Therefore,it is usually modeled as a linear time-invariant system.The error of the system is analyzed so as to increase the accuracy and sensitivity of the system.