Design of vehicle management software for high altitude airship based on VxWorks

For the increasingly sophisticated vehicle management system used in modern aircrafts, on board software which performs the core processing logic is crucial for the performance and system upgrades. After a brief introduction of the management system of high altitude airship and an analysis of its basic functions, this paper presents the design for a general application software framework for airborne computer application software based on the VxWorks real-time operating system. To achieve the object of building high-reliability, longlife, real-time embedded software, the research focus on the designs of task classification, priority determination and task communications. At last, the schedulability analysis which performed in the hardware-in-the loop simulation environment is implemented to make sure that the software design is feasible and scheduling.