Advanced Aircraft Electrical Load Management Study

It is an inevitable trend that the distributed aircraft power and automatic load management technologies will be applied in Advanced Aircraft Power System (AAPS). Based on the detail analyse of Aircraft Power System construction and function, this thesis discusses and studies the functional analysis and design of the Electric Load Management Center (ELMC) in details.Electric Load Manage Center (ELMC) is an important component in fulfilling the automation of aviation electrical load control and management. The ELMC's primary task is to recieve the information from the PSP through the bus, in the same time, monitor and control the second bus of the aircraft's electrical system and the Solid Status Power Controlers (SSPC) of advanced aircraft, then to send all these information to the PSP.During the design of the system, the dissertation decides to use the hardware platform which is formed by the DSP controller and FPGA together. With the fast and powerful data processing ability of the DSP controller and the abundant and configurable programing I/O resources and the programmable capability of the FPGA, the system can accomplish all the tasks beter, such as conditioning multiple analog signals and the control and management of multiple digital signals.Software development of the system grounds on the μC/OS-II. According to their own features, the application modules are divided into diferent tasks with diferent priorities. Through the system service, the μC/OS-II can manage all task modules. In order to improve the real-time ability of the system, every task is designed with the program mode of C language and compiling language combined with each other. Using RTOS in the system, the reliability and real-time ability of the system can be improved greatly, and the software system can have a more clearly layout, so the software system have a beter expandable ability.