The Design Of Airship ST-3 Real-Time Supervisory Control System

Based on the investigation of the research group, this thesis attempts to further develop the autocontrol flight system of the ST-3 telecontrol airship. After reviewing the existing research on the enacted height flight and enacted orientation flight technologies of the airship that have proved to be successful, the writer of this thesis has a comprehensive analysis on the real time supervisory control system of the ST-3 telecontrol airship, moreover, the writer of this thesis further develops the system according to the current need in practice and has a brief introduction of the developed system.In order to transmit data between airship and PC on ground, two wireless data transmitting schemes are employed: one is the wireless data communication project based on MCU and nRF905 chip as its core; such project includes the wireless communication modules both in airship and on ground, the signals transmitted by which could realize the goal of the long-distance communication by amplifying the single. Under the control of MCU, the data outputted by GPS receiver are transmitted to the PC on ground; the commands produced by the computer are sent to the airship, then the microprocessor completes the calculating process and drives the actuator of the airship to adjust the airship's condition accordingly. The other long-distance wireless data transmission project is based on the way of internet and this thesis mainly discusses the theory on the design of the software applied on the receiver in such way of communication, including the working system of controlling several airships simultaneously.To control the status of the airship more effectively, developed a kind of real time supervisory control software based on the Windows platform. Such software employs the way of multithread programming and possesses the functions of serial and network communication, data processing, database operation, as well as real-time simulation.The design, debugging and test on the hardware as well as the software indicate that the supervisory controlling system generally achieves the expected goal of supervising and controlling airship real-timely.