Dual-Core Control Design Of Aircraft Based On DSP And FPGA Cai Yiqing

Four-axis aircraft is a four-rotor aircraft,the four propellers are driven by brushless motor to produce the lifting force,X-shaped layout allows the aircraft through the flight control system to change the brushless motor speed,played a stable flight attitude [ 1].In recent years,with the four-axis aircraft in the military and civilian areas of the two major applications,aircraft flight control system is facing higher requirements.Based on the current requirements of the four-axis aircraft and the characteristics of the commonly used fly control system,this paper puts forward the dual-core control design of the aircraft based on DSP +FPGA in order to meet the target recognition function in combination with the advantages of DSP and FPGA.In order to realize the basic flight control and expansion function of the four-axis aircraft,the overall design scheme of the flight control system is proposed.The flight control system designed in this project is divided into two parts: the main control board of the ground station board and the aircraft control board.The main control board of the ground station receives the parameters of the aircraft returned by the main control board of the aircraft and sends the control commands issued by the host computer to the flight control board.The aircraft main control board is used to collect the sensor data and control the motor speed to realize the flight of the aircraft control.Ground station and the flight control board are used DSP + FPGA dual-core design,in the ground station DSP used to control the 2.4G digital transmission received flight command,FPGA control USB interface to communicate with the host computer;in addition to the DSP control 2.4G But also charged with the core work of the follow-up image processing,and FPGA as a flight control of the main processor for the acquisition of sensor data for aircraft attitude adjustment in the control board.Then,the hardware design and software design of the ground station and the flight control board areintroduced in detail.For example,the USB2.0 interface on the ground station,the 2.4G wireless transceiver module,the GY86 module and the video decoding module on the flight control board.The software part mainly includes DSP + FPGA communication and PWM output,and finally introduced a methods of data communication between DSP and FPGA.The biggest feature of this paper is that the reasonable FPGA and DSP resources can not only realize the basic flight control,but also realize the four-axis aircraft configurability,so that it has the target recognition function,effectively improve the system embedding.