Research On Aerodynamic Simulation And Flight Control System Of The Morphing UAV Based On DSP

With the ever-changing science and technology the world today, The developmentof unmanned aerial vehicle (uav) is undergoing significant changes; researches on UAVhave attached much attention from more and more all countries in the world. In recentyears, especially the field of sweep wing aircraft technology becomes a very importantresearch topic. High mobility morphing aircraft technology owns more prominentadvantages in improving the aerodynamic performance of UAV.Due to the morphing UAV wing structure changes during the process of flying, thenonlinear changes occur in the aerodynamic force、inertial force. therefore, it isnecessary to establish its dynamics model under the condition of quasi-steady and pointmass approximation．At the same time the design on the basis of the theory switch ofswitch closed loop control system, and analyzes its stability and dynamiccharacteristics.Wing is to provide the primary components of aircraft lift and manipulate the force,and the external structure of the wing of an impact on the aerodynamic performance in aflight environment. The current study morphing aircraft on international programs arebasically using the wing as a deformed body, able to meet in a variety of complex flightenvironment are able to obtain the required best aerodynamic characteristics, M6wingairfoil applies ICEM to partition wings by the manners of structure. Hence, the highquality grid can be generated to meet the requirements so as to set the monitor in theprocess of fluent simulation, to track and observe the residual profile and the wing lift,and to record the trends simulation results under different sweep of the same geometryas well as lift and drag coefficients. And the analysis can be simulated and done withthe wing at the same Mach number, pressure and static pressure distribution angle ofattack conditions in both sweep and Mach number distribution, and pressuredistribution.The flight Control System of Morphing UAV mainly includes: Flight ControlComputer System, Sensors Subsystem and Actuators Subsystem. The Flight ControlComputer Subsystem, whose core is chip TMS320F2812, is composed of chip, SRAMand FLASH memory. Sensor Subsystem involves acceleration sensor、angular-ratesensor、System、GPS、ultrasonic sensors、pressure sensors and so on. The analysis and handling of the data each sensor collected makes the morphing of unmanned aerialvehicle (uav) can be possible in the range of security flight attitude and height.