Research On Some Problems Of General Aircraft Integrated Avionics System

At present,the autonomous manufacturing of general aircraft and its airborne equipment in our country are mostly faced with technical barriers such as airworthiness certification.Therefore,How to solve these problems is becoming particular urgent to catch up with the golden window period for the current development of general aircraft in our country.In this paper,several key issues such as airworthiness certification,technical routes and architecture designing in the development of general aviation integrated avionics system HD01 were deeply studied.The following results have been achieved:1.Based on the research and analysis of the major general aircraft avionics system such as 61000,the paper completed the overall architecture design and functional requirements of the HD01,using the integrated modular avionics architecture and open design philosophy.Meanwhile,the security of the architecture was evaluated and verified through the preliminary security assessment(PSSA).2.The paper completed the construction of the ICP verification platform,including the hardware and software demonstration and selection of ICP according to the functional requirements of HD01.On this basis,the configuration and verification of Board Support Packdge(BSP)were accomplished.3.The paper also studied the key issues such as partition real-time scheduling and main time frame design through the ICP verification platform,and proposed a main time frame design algorithm.The verification shows that the algorithm can minimize the system utilization under the premise of meeting the task scheduling,so as to meet the need of system expansion and upgrading.4.The paper completed the HD01 software implementation methods and software management specifications,and developed a display and control simulator software based on the above specifications.The paper also presents an analysis and design method based on "interface,widget as the core,update the scene through external data and event".The development and verification of the display and control simulator software were completed through the formal modeling and verification tool SCADE.The above results show that the work of this paper has achieved the expected effect and completed the established goals and tasks.