The Design Of Control System For An Unmanned Helicopter And Development Of Multi-simulation Platform

Compared with traditional manned aircraft, unmanned helicopter is able toperform a variety of tasks and reduce the casualties effectively by hovering at lowaltitude with good imperceptibility. Unmanned helicopter is playing an active roleboth in the military and civilian fields. Therefore, the world’s major military powercountries have joined in the ranks of research.Unmanned helicopter can be divided into different categories on the basis ofdifferent control methods. As the "brain center", automatic control system forunmanned helicopter, which is responsible for important tasks, directly determines theflighting performance. Undering the analysis about several typical flight controlsystems, an innovative flight control system is designed. In order to verify the controleffect of the designed algorithm and make the effect intuitively display, amulti-unmanned helicopter simulation platform is built. In brief, the thesis focuses onthe design of the hardware and software and the development of the multi-simulationplatform for unmanned helicopter.Based on the analysis of the research situation at home and abroad, the overallstructure and functional requirements of the flight control system are detaileddiscussed, and on this basis, a flight control system with PC104processor, whichcould be the processor computer, and FPGA, which could be the Assist processor, isdesigned.The method about how to develop the hardware and software is detaileddescribed. First, the idea of modular is chosen to design the hardware structure whichadopts embedded Linux2.6.32system as the operating system. Second, for therequirement of communication between the FPGA and PC104interface, the driverapplications is designed, besides, under the Matlab environment, PID controlalgorithm for unmanned helicopter’s hover situation is built. Third, the thesis makes asimulation test to to verify the validity and reliability of the design. Finally, for themulti-simulation platform, a network system is made up by the wireless WI-FI, as aresult, the instructions which are issued by the host could be accepted by the slavesthrough the network, and the control effect could be verified.