农业机械学报2001，Vol.32Issue(3)：102-105,4.
应变式压力传感器在离散介质中应用的误差分析
Error Analysis on Pressure Measurement of Dispersed Medium with Strain Gauge Pressure Transducer
卢博友 1冯远静 2刘洪萍 3薛惠岚 4郭爱荣2
作者信息
- 1. 西北农林科技大学机械与电子工程学院教授,
- 2. 西北农林科技大学机械与电子工程学院硕士生
- 3. 西北农林科技大学机械与电子工程学院讲师`
- 4. 西北农林科技大学机械与电子工程学院副教授
- 折叠
摘要
Abstract
For the purpose of studying the adaptability of the film strain gauge pressure transducer used in measuring the dispersed medium pressure,the working characteristic of the transducer and the cause of pressure measurement error in dispersed medium were analyzed in this paper. Based on the theory of small deflection deformation of the elastic lamina, the relation of the measurement error and medium distribution density was presented with six steel balls in different diameters, and tested by the experiment with agricultural matter (millet, soybean, etc.). As the result, the relation of them was in negative, that is, the error will be smaller as the diameter of the agricultural matter is less, however, the measurement error will not be prominent if the diameter less than some numerical value; if the diameter is larger than usual, the error can be smaller by testing more times. The error caused by temperature is not only related to temperature variation but also to the difference of temperature of the film surface. The paper analyzed nonlinear error of the transducer and error caused by temperature, humidity when the transducer was used.关键词
压力传感器/离散介质/测量误差分类
信息技术与安全科学引用本文复制引用
卢博友,冯远静,刘洪萍,薛惠岚,郭爱荣..应变式压力传感器在离散介质中应用的误差分析[J].农业机械学报,2001,32(3):102-105,4.
