CAJ | 학술논문

示功图既是研究和判断内燃机工作状态、基本性能参数计算及放热规律分析的重要依据,又是反映燃烧过程数学模型精确程度的评价标准。基于Labwindows/CVI软件开发了示功图软件,使用高速多通道采集卡、压电式气缸压力传感器、放大器和角编码器,利用虚拟仪器的方法实现示功图的采集。完成了采集界面的设计、采集中的AD转换、多通道数据的高速采集和处理并最终实现波形的显示。经程序测试可以实现包括汽缸压力和角编码器信号等多通道的采集、示功图的显示功能。
시공도기시연구화판단내연궤공작상태、기본성능삼수계산급방열규률분석적중요의거,우시반영연소과정수학모형정학정도적평개표준。기우Labwindows/CVI연건개발료시공도연건,사용고속다통도채집잡、압전식기항압력전감기、방대기화각편마기,이용허의의기적방법실현시공도적채집。완성료채집계면적설계、채집중적AD전환、다통도수거적고속채집화처리병최종실현파형적현시。경정서측시가이실현포괄기항압력화각편마기신호등다통도적채집、시공도적현시공능。
Indicator diagram is an important basis of judging engine working state,calculating basic performance parameters and analyzing heat release.It also reflects the level of precision mathematical model of the combustion process of the evaluation criteria.The software is developed with Labwindows/CVI which is very popular recently.High-speed multi-channel acquisition card,piezoelectric cylinder pressure sensor,amplifier and encoder are used to achieve the indicator diagram.The acquisition interface,AD conversion,high-speed multi-channel data acquisition and processing,ultimately displaying the waveform is designed.