Study On Key Technologies Of A 6 DOF Aircraft Pose-adjusting System For The High-temperature Wind Tunnel Experiment

The wind tunnel experiment is full of importance in the field of aviation and aerospace engineering. In particular, a pose-adjusting subsystem plays a remarkable role to allocate experimental models within the wind tunnel system. Furthermore, the function indexes, such as loading ability, moving accuracy, and delivering speed, are constrained by the afore-mentioned pose-adjusting subsystem.Under such circumstances, a 6-dof aircraft pose-adjusting subsystem is presented and designed for the High-temperature Wind Tunnel experiment in this thesis. After the system architecture was established, the key mechanical structures and the control system were respectively designed. The main contents of this thesis are as follows:1. The mechanical structures and the control system scheme were established, according to the design requirements of the wind tunnel experiment system.2. The key mechanical structures were studied and developed. At first, the Y-orientation-lift mechanism was determined by using the theory of Gravity Driver, the condition of agility drive for Y-orientation-lift was analyzed and computed; then theαAngular-motion-mechanism was designed and its related motion was simulated with specified parameters; At last, another structure, the X-orientation mechanism driven by fluid power was simultaneously studied, and meanwhile the key components have been chosen.3. According to the proposed control system scheme, the corresponding control system were designed and implemented, in terms of the control circuits, PLC hardware and software systems,and the MCU system.4. The control-loop codes were made out by Visual C++, which can realize user-machine dialogues and put into operation. In detail, the software architecture has been designed to satisfy the necessary requisites involving issues such as the interfaces and their functions, and moreover, the realization of the key functions and algorithms has been thoroughly described.The pose-adjusting system proposed and developed in this thesis can be validated to perform 6-dof movements in the High-temperature Wind Tunnel, which could provide a sound and useful platform for the future research of aero-craft systems.