基于SCADA的航空发动机HMU自动化试验系统设计与应用

Design and Application of Automated Testing System for Aircraft Engine HMU Based on SCADA

航空发动机HMU是发动机燃油控制系统中的一个关键单元,主要作用是根据发动机电子控制器的输入要求对燃油增压、计量以及伺服作动,为发动机提供燃油,确保发动机发挥其最佳性能,为保证其产品在生产过程中更高效率、更高精度的试验及交付过程,需要进行智能化试验系统交付平台的设计,从而消除因人工主观因素对产品的影响,针对整个系统进行网络部署和技术架构进行研究,分别采用硬件和软件两方面进行升级配置,基于LabVIEW软件进行算法程序编辑,并创新性地将程序与SCADA系统进行通讯连接,实现自动化试验的功能,同时采用二分法自动找点的方式进行自动交付报告的生成,经实际产品应用已验证其系统设计的科学可行性,满足集中控制自动化试验及交付的目标,具有非常重大的工程意义。

The hydro mechanical unit(HMU)of aircraft engines are a key unit in engine fuel control systems.Its main functions are to pressurize,meter and servo operations,provide fuel to engines according to the input requirements of engine electronic controllers,and ensure the best performance of engines.In order to ensure the high efficiency,precision testing and delivery of products,it is necessary to design an intelligent test system delivery platform to eliminate the impacts of human subjective factors on products.Aimed at the network deployment and technical architecture of the entire system,it upgrades and configures from the aspects of hardware and software,edits the algorithm program based on LabVIEW software,and innovatively communicates with the supervisory control and data acquisition(SCADA)system to realize the automated testing function.At the same time,the automatic point-finding method of dichotomy is used to generate automatic delivery reports.It verifies the scientific feasibility of the design through the actual product applications,and meets the goals of the centralized control,automated testing and delivery,which has an important engineering significance.