Design Of Power Conversion Mechanism For Small Land-air Amphibious Unmanned System

The design of the land-air amphibious unmanned system overcomes the shortcomings of the short cruising time of the drone and the easily restricted movement of the unmanned vehicle.Through the flexible conversion of the control mode of the system,the system can traverse different terrains and is suitable for reconnaissance detection in variety of complex environments.The land-air motion control of the miniaturized amphibious system is independent and must be combined with each other.The land motion realizes the speed control and displacement control of the local space,and the air motion realizes the long-span flight height control and stable hovering.During operation,mode switching control is realized according to multi-sensor signals.The design of the power conversion mechanism for the land-air amphibious unmanned system is mainly reflected in the design of the flight mechanism and the construction of the land motion mechanism,and the connection between the two should be considered at the same time.This paper establishes the land-air power drive mode of the amphibious system,and designs the power conversion mechanism by analyzing the conversion logic between the power mechanisms.Two kinds of proportional,integral and differential control algorithms of land and air are used respectively,and external target detection and feedback are introduced to complete the simulation through Matlab/Simulink.At the same time,the mode conversion module is designed through the state toolbox to realize integrated control.The simulation results show that both land and air proportional-integral-derivative algorithms have good control effects,and the mode conversion control can effectively complete the system’s land-air operation mode conversion.In this paper,the overall model of the land-air amphibious unmanned system is constructed.When building the three-dimensional model of the system,the design requirements of portability and miniaturization are fully considered,and the simplified design of the mechanism is realized on the basis of ensuring the function.Reliability The finite element analysis is carried out to enhance the credibility of the system.In the algorithm control,the Simulink program is designed and implemented to realize the conversion of the power mechanism and control the independent operation in the land and air mode.At the same time,the characteristics of the traditional PID control and the cascade PID control are compared.Through experiments,the cascade PID algorithm has obtained the control performance.promote.Finally,the construction of the physical platform is completed,and the performance of the designed structure and control algorithm is verified.