Establishment of Dynamic Model of UAV Variable Pitch Electric Propulsion System
Aiming at the dynamics modeling pro blem of variable pitch electric propulsion system applied to small and medium-sized UAVs,firstly,based on the leaf element theory and the equivalent circuit model,the nonlinear model structure of the variable pitch electric drive system is derived,which is composed of a first-order inertial link and a nonlinear hybrid term.Secondly,a test platform was built,the software and hardware design scheme of the measurement and control system was introduced,and the acquisition method of the parameters required for system identification was given.Finally,the method of parameter identification of the dynamic model is given,and the simulation model of the system is established according to the identification results,and the accuracy of the model established in this paper is verified by comparing the simulation results with the actual data.
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