基于双DSP的飞控软件设计

为了解决飞控软件机时紧张问题,提出了双DSP的设计方案。该方案采用主从式设计结构。主从DSP通过双口RAM交换数据信息,通过中断进行同步。主从DSP协调配合,共同完成软件功能。双DSP方案的飞控计算机设计,相对原来的飞控计算机设计改动比较小,DSP选型相同,硬件设计和操作系统设计相似。双DSP方案飞控软件设计,操作系统及应用程序大部分可继承原来的设计,既缩短了研制时间,又减少了研制风险。实行双方案后,计算机的处理能力提高了一倍。

Design of Flight Control Software Based on Dual-DSP

Dual-DSP system is presented in order to solve the problem of insufficient runtime. The master slave structure is adopted in the scheme. The dual-port RAM is used as master slave DSP data mutual media and the synchronization of arithmetic on dual-DSP is achieved through interrupt. The designed pur- pose of the software is realized through the cooperation of master slave DSP. There is a little discrepancy between dual-DSP system and original system. The selection of DSP is the same and the design of the hard- ware and the operating system is similar. In the scheme, the operating system and application software in- herit the original design mostly. The development time is shortened and the development risk is reduced. The processing power of the computer is doubled in the dual-DSP system.