基于虚拟仪器发动机测功机转速的采集与分析  

Data Acquisition and Analysis of the Engine Dynamometer Speed Based on Virtual Instrument

作　　者：王秋霞[1] 吴培周 

机构地区：[1]福建船政交通职业学院机械工程系,福建福州350007 [2]福建省汽车工业集团有限公司,福建福州350003

出　　处：《电气自动化》2013年第6期93-95,共3页Electrical Automation

摘　　要：基于虚拟仪器技术,提出了对发动机测功机转速信号进行采集与分析的方法。以测功机工作原理和转速特性为基础,选用Renishaw绝对式圆光栅角度传感器,搭配NI SCXI信号调理模块和NI PCI DAQ卡,构建了转速采集硬件。软件以LabVIEW为平台,给出了数据读取和软件滤波的程序,阐明了频率-周期法的原理与定时器实现方法。通过在470汽油发动机上进行实验,证明了可行性。Based on virtual instrument,the paper presents a method for engine dynamometer speed acquisition and analysis. Based on the work principle of engine dynamometer and the speed characteristic,the paper sets up a speed acquisition hardware with the Renishaw absolute circular grating angle sensor,NISCXI module and NI PCI DAQ card. The program of the data reading and the software filtering are given in the paper with LabVIEW as platform. The principle of frequency-period（ M-T） method and the implementation of timer are illustrated. Finally,via experiments on gasoline engine type 470,the feasibility of this paper is proved.

关 键 词：虚拟仪器 发动机测功机 转速采集 软件滤波 频率-周期法 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]