【作者】 高隆隆； 杜经民； 李宝仁；

【Author】 GAO Longlong DU Jingmin LI Baoren(FESTO Pneumatic Technology Centre,Huazhong University of Science and Technology,Wuhan 430074)

【机构】 华中科技大学FESTO气动技术中心；

【摘要】 通过建立管路终端负载为容腔的测压管内气体压力传递数学模型,研究了嵌入式大气数据传感系统(FADS)测压管路动态响应特性。压力传递数学模型的建立综合考虑了管路粘性损失、热传递效应等影响,仿真分析了FADS系统测压管路频率响应特性,得出压力传递与管路内径、管路长度、容腔容积及大气高度之间的关系。仿真结果对压力传感器的合理设计有一定的指导意义。更多还原

【Abstract】 This paper presents a mathematical model of gas pressure propagation in a pneumatic tube,the tube’s downstream is a chamber.Based on this model,the dynamic response characteristic of pneumatic tube for flush air data sensing(FADS) system was analyzed.The model was developed by considering fluid viscosity and thermal conduction effect,ect.Frequency response characteristic of pneumatic tube for FADS system was analytically simulated,with different diameter,length of tube,volume of chamber and atmosphere altitude.It is the simulation result that has some instructional meaning for the design of pressure sensor properly.更多还原