Advanced Aircraft Electrical System Key Technology Of Computer Control And Management System Remote Terminal

The remote terminal of computer control and management system of the advanced aircraft power distribution system is a intelligent auto-distribution terminal which connected aircraft electric data bus 1553B.The remote terminal surveille the status messages of electric power bus and load ,and it send out the messages of the power system to the power system Processor (PSP) in the prescriptive minimum periods by some phase request, at the same time, the power distribution remote terminal(PDRT) parsing the Electrical Load Equations according to the power layout instructions and load's power request which from PSP,to accomplish the task of auto-power distribution by export the system re-build instructions.TMS320LF2407A is the core hardware of the power distribution remote terminal,and it accomplish most of the task about the control and calculation.The FPGA chip EP1K30QC208-3 is used to extend I/O port,which improve the integration and reliability of the system.The PDRT based on the embedded Real-Time Operation System (RTOS) μC/OS-Ⅱ,interrupt response time can be shorten by the optimization of the μC/OS-Ⅱ timetick,and the system real-time performance is enhanced.In some priors settings,Rate-monotonic Scheduling (RMS) can be determine the deadline of the tasks.The higher performance in real-time response and reliability of PDRT is be requested by system.The system Real-time performance can be improved effectively by some methods,for examples,improve the data throughput,choose the optimized arithmetic and use the rationalized task distribution and task scheduling algorithm. The system reliability can be improved by the means of some measures about hardware and software.The testing of PDRT include Load Monitor efficiency and Distributed-Bus Monitor quality,and the bus usage can be described by some parameter about the bus use ratio and the bus burthen.The perfect function and the improved performance of the advanced aircraft power distribution is a gradually process,and some useful advice about post design is bring forward at the end of the paper.