现代电子技术2025，Vol.48Issue(6)：16-22,7.DOI:10.16652/j.issn.1004-373x.2025.06.003
基于PLC控制的空气悬挂空压机等熵效率测量系统
PLC-controlled based isentropic efficiency measurement system for air-suspended compressors
周庆霞 1卿兆波 1李坤鹏1
作者信息
- 1. 中国计量大学 机电工程学院,浙江 杭州 310000
- 折叠
摘要
Abstract
An in-depth discussion on the isentropic efficiency measurement system for air-suspended air compressors is conducted,and a system design for optimal measurement of isentropic efficiency is proposed.The steps of calculating isentropic efficiency are analyzed in detail,and the influence of input parameters on the uncertainty of isentropic efficiency is explored.The testing device is constructed by means of the method of filling tank exhaust detection,and the isentropic efficiency detection system based on S7-200-SMART PLC control is designed.In the system,VB6.0 is used as the upper computer software to realize point-to-point communication with PLC or touch screen by means of ModBus protocol and RS485 interface.The sources of uncertainty in isentropic efficiency are analyzed,and the impact of various input quantities on isentropic efficiency is estimated by quantifying uncertainty and its partial derivatives,so that the performance trend of the air compressor is predicted.The testing results show that the pressure ratio is the main input quantity that affects the isentropic efficiency.Further experiments show that as the pressure ratio increases,the uncertainty region of isentropic efficiency stabilizes,ultimately reaching 3.6%.Therefore,the isentropic efficiency for evaluating the performance of air compressors under these conditions is reliable.关键词
空气悬挂/空压机/PLC控制/等熵效率/充罐法/排气压力/不确定度评估Key words
air suspension/air compressor/PLC control/isentropic efficiency/filling method/exhaust pressure/uncertainty assessment分类
信息技术与安全科学引用本文复制引用
周庆霞,卿兆波,李坤鹏..基于PLC控制的空气悬挂空压机等熵效率测量系统[J].现代电子技术,2025,48(6):16-22,7.
