Digital twin-driven armored vehicle dual-motor transmission mechanism coupling modeling method and application

Abstract

The invention discloses a digital twin-driven armored vehicle dual-motor transmission mechanism coupling modeling method and application, and the method comprises the steps: considering nonlinear factors including the time-varying meshing stiffness, transmission error and meshing impact of a gear, and describing the motion relation and stress relation between parts through applying a force element; establishing a dynamic model of the coupling transmission mechanism; establishing a dynamic mathematical model and a vector control model of the permanent magnet synchronous motor according to the dynamic mathematical equation and the vector control theory of the permanent magnet synchronous motor; according to the established dynamic model of the coupling transmission mechanism and the vector control model of the permanent magnet synchronous motor, coupling is carried out through electromagnetic torque, load torque and feedback rotating speed, an electromechanical coupling model is established, the sensitivity degree of different parameters of the model to response signal difference values is analyzed based on the residual values of simulation signals and actually measured signals, sensitive parameters are screened out, and the response signal difference values are calculated. And optimizing the sensitive parameters of the model based on a forgetting least square algorithm, and correcting the parameters of the model based on an optimization result to complete updating of the digital twin model.

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