基于Shannon的汽油机瞬态排放检测工况设定  

Detecting Conditions on Transient Exhaust of Gasoline Vehicle Based on Shannon Entropy

作　　者：王爱国[1,2] 

机构地区：[1]安徽机电职业技术学院,安徽芜湖241000 [2]合肥工业大学,安徽合肥230009

出　　处：《安徽科技学院学报》2010年第2期10-15,共6页Journal of Anhui Science and Technology University

基　　金：国家自然科学基金资助项目(50176006)

摘　　要：介绍了符号时间序列方法,通过五组份排放分析仪瞬态检测性能对比实验,获得瞬态排放间接检测手段,控制汽油机节气门不同的开闭速度,得到不同的瞬态工况,利用Shannon熵、单缸Shannon熵和实际排放状况,确定汽油机台架实验的瞬态检测工况。Symbolic Time series analysis is explained. Through the parallel experiment for the performance of transient emission detecting of a five components exhaust analyzer, the indirect detecting measurement for transient emissions is obtained. The throttle opening degree and speed are controlled, so that the different transient conditions are obtained. Using the Shannon Entropy, Shannon entropy of single cylinder and the emission value, the transient detecting conditions of gasoline testbed＇s experiment are chosen.

关 键 词：汽油机 瞬态排放 符号时间序列 Shannon熵 检测工况 

分 类 号：U464.172[机械工程—车辆工程]