Design And Implementation Of Micro-Rotor Unmanned Aerial Vehicle Communication System

Along with the application of Micro-rotor Unmanned Aerial Vehicle (MRUAV) in military, commercial, scientific research and civilian area more widely, the need of real-time and reliability is endued with higher and higher requirement. The communication system of MRUAV is the communication link which connects the controlling system and the body. The promotion of the communication system has a great influence on improving the performance of MRUAV, so the research on it becomes a focus.The paper analyses the functional requirement of the system, and the detailed design is realized from hardware and software. The main processor and functional module of the system are designed using the real-time of digital signal processor, and then implements the system. The main work can conclude as follows:(1)Design and implement the communication system of MRUAV and use the TMS320F28335as the main processor. The processor contains the power panel and control board which is divided into data acquisition, data transmission and command response module. The circuit connection between the board and external device is designed. And the function of data acquisition is implemented. The power panel can sample inertial sensor data through Multichannel Buffered Serial Port (McBSP) and collect ultrasonic range finder data through Universal Asynchronous Receiver/Transmitter (UART). The data contains acceleration, angular velocity, magnetic flux and height of MRUAV.(2) Design and implement the function of data transmission. The data collected by the power panel can be transferred to the control board through enhanced Controller Area Network (eCAN). And then the data can be transmitted to the control system by Wi-Fi. The control system can also send control command by this way.(3) Design and implement the function of command response. The control board transmits the command to the power panel. According to the instructions, enhanced Pulse Width Modulator (ePWM) module can generate PWM waveforms with different duty cycle which are capable of changing the deflection angle of servos and rotational speed of motors.