传感器动态响应特性对测量结果的影响

2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE) Pub Date : 2021-07-16 DOI:10.1109/ICMAE52228.2021.9522413

Xiang Lyu, Xinyuan Zhou, Meng Zhang, Shipo Li, K. Liu, Taikun Wang

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引用次数: 0

摘要

传感器的动态响应特性对测量结果的准确性有重要影响。对传感器动态响应特性进行了相关研究，主要涉及以热电偶为代表的一阶测量装置和以压力传感器为代表的二阶测量装置。对于热电偶测温，推导了时间常数的理论表达式以及测量误差与时间常数的对应关系。对于压力传感器，还推导了测量误差与固有频率的对应关系。所得公式可作为传感器选择和测量误差估计的指导。

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Influence of Dynamic Response Characteristics of Sensors on Measurement Results

Dynamic response characteristics of the sensors have an important effect on the accuracy of measurement results. Relevant studies about the dynamic response characteristics of sensors are carried out, which are mainly concern with the first-order measurement device represented by thermocouple and the second-order measurement device represented by pressure sensor. For temperature measurement with thermocouple, the theoretical expression of time constant and the corresponding relationship between measurement error and time constant are derived. For the pressure sensor, the corresponding relationship between the measurement error and the natural frequency is derived also. Formulas obtained in this paper can be used as the guideline for sensor selection and measurement error estimation.

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2021 12th International Conference on Mechanical and Aerospace Engineering (ICMAE)

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