基于处理器仿真的发动机控制软件平台

Engine control Software development platform based processor simulation

摘要:

为提升商用航空发动机控制软件的效率、节省验证成本，数字仿真技术被广泛采用，在仿真平台保证功能逻辑正确的前提下，再进行电子控制器硬件（EEC）的集成。商用航空发动机控制软件在满足发动机的功能和性能要求，还需要满足适航安全的目标，由于仿真平台与真实硬件平台的差异，在仿真平台获得的验证结果往往不被适航所采纳，因此提高仿真度，使得仿真平台能作为控制软件开发平台被适航所认可，是进一步节省成本的有效方法；基于通用仿真运行平台SIMICS，通过采用模拟硬件处理器的寄存器、指令集以及存储器、外设等，使得在目标平台上运行的代码可以直接运行在仿真平台，在仿真平台达到目标码级别的验证；通过软件时间行为的分析与模拟，使得系统和硬件的仿真程度进一步提高，更接近真实硬件，在仿真平台所获取的验证数据，更容易被适航所采纳。

Abstract:

To improve the efficiency of the commercial aircraft engine control software development ,. simulation is extensively used, in simulation platform, it usually used to prove the logic is correct and then integrated the application software into the EEC hardware.But for commercial aircraft engine control software, the development objective is not only to meet the functional and performance requirements, but also to meet the airworthiness requirements, because there are differences between simulation platform and target hardware, the test result obtained in simulation platform can’t be accepted by the certification authority. So minimal the differences between simulation and target hardware is important. Build a platform based SIMICS, and use the processor simulation technology, simulate the processor instructions, memory, devices,etc. The application executable object code can run on the simulation platform as same as the target, and by the way of analyze the behavior of system, to improve on the integrity of the test results in the simulation platform.