多电飞机电气负载管理中心的研究

【作者】 张军平；

【导师】 谢利理；

【作者基本信息】 西北工业大学 ， 电力电子与电力传动， 2004， 硕士

【摘要】 多电飞机是下一代先进战斗机的一个重要特征，而电气负载管理中心(ELMC)是多电飞机电气系统的枢纽部件。因此，研究能适应多电飞机要求的电气负载自动控制与管理系统，有着重要的理论和现实意义。 本文首先分析了ELMC在国内外研究发展状况，并依据航空电子系统特点和容错供电要求，提出了由配电中心和控制中心组成的ELMC的总体方案；完成了270V高压直流供电的飞机容错供电系统方案的设计，实现了供电系统中二次配电方案的控制与管理的模拟演示。 控制中心是ELMC的核心，本文采用改进后的单通道布局方案，设计了以工控机PC104为核心的硬件系统和μC／OS-Ⅱ为核心的多任务软件系统。软件设计采用结构化方法，按照实时多任务设计流程，完成系统数据流图和应用软件的设计。文中详细分析了任务划分、任务优先级分配、各任务流程图设计及任务间的并行工作方式等；设计完成了ELMC原理样机，并与供电处理机、固态功率控制器和伺服控制系统进行联合调试。实验结果表明，该样机系统达到了预期的功能要求。更多还原

【Abstract】 More Electric Aircraft (MEA) is a feature of advanced fight plane. It is important to study Electric Load Manage Center (ELMC), which is the key unit of MEA.The latest development of ELMC, which is composed of Distribution Power Center Unit (DPCU) and Electrical Remote Terminal (ERT), is generalized in the paper. ELMC scheme is presented according to the characteristic of avionics and the request of Fault Tolerant Electrical Power System (FTEP). FTEP structure based on 270V direct current is then designed to realize the demonstration of DPCU.Applying the layout of improved ERT with single channel, ERT is designed as an embedded real-time multitask system basing on PC104 and μC/OS-Ⅱ in the paper. Meanwhile, according to the process of real-time multitask design, Data Flow Diagram (DFD) of ERT software is constructed and application software is developed by the DFD. The method of ERT software development is Structure Programming (SP). In software development, distribution, priority, task flow chart design, parallel schedule of tasks are discussed in detail.Finally, ELMC model is finished and tested with Power System Processor (PSP), Solid State Power Controller (SSPC), and servo system. Experiment proves that ELMC can fulfill planned function perfectly.更多还原