Based On The Computer Of A Uav Flight Control System Hardware Design And Software Implementation

This paper mainly concerns about the hardware design of Flight Control System(FCS) of a certain Unmanned Air Vehicle(UAV) , the improved design and software realization of a certain atmosphere data system(ADS).The FCS is one of the most important parts of a certain UAV. The FCS demands adequate anti-jamming ability, strong real-time ability and long-time high reliability, so the FCS design scheme is adopted which uses double Micro Controller Unit(MCU) working separately at the same time, dual-port SRAM sharing data between two MCUs. The C8051F120 chip is adopted in the FCS, which is a high-speed high-performance mixed-signal System-on-a-Chip MCU. The communication of FCS is composed of multi-serial ports(such as RS422 and CAN) and parallel ports based on dual-port SRAM. The detailed hardware structure design scheme is provided in this paper, which carries out all functional circuit designs such as data collecting, signal processing, data communication, switch shift between manual control and program control, rudder control. Also the FCS dependability is made a certain attempt in the paper.The ADS is an absolutely necessary part during ground system test. As for the improved the ADS, the controller's optimization design will be done through the digital simulation. The trace controller of step-function signal is designed through the incomplete derivative PED method and the trace controller of ramp signal is designed through the nonlinear fuzzy PD plus integration method in order to make some control indexes more suitable for some needs at the period of ground system test. On the basis of digital simulation, in order to do the semi-physical simulation using RTW it is required to replace the mathematic models which represent the real entities. The controller's parameters will be settled more practically through the semi-physical simulation. After that the part of controller will be drawn from the system in order to make automatic code generation under specific setting. In order to execute periodly the behavior which the controller's model represents under the control of multi-media timer interrupt in the environment CB, the created ANSI C codes' modifiabilities and the multi-media timer's transplant will be done, eventually the whole system integration is realized in the environment of CB successfully.