Control system of magnetic gear composite motor vehicle steering system and electric vehicle

Abstract

An embodiment of the invention provides a control system of a magnetic gear composite motor vehicle steering system and an electric vehicle. The system comprises an encoder, a displacement estimationdevice, a difference calculation device, a self-adaptive diagonal recursion cerebellum model controller, a current controller and a PWM inverter. The adaptive diagonal recursion cerebellum model controller outputs control quantity, which is output to a magnetic gear composite motor through the current controller and the PWM inverter; mixed signals of a load and the magnetic gear composite motor are transmitted to the encoder; the encoder detects the rotating speed of the magnetic gear composite motor; the displacement estimation device calculates estimated angular velocity displacement, wherein the estimated angular velocity displacement is compared with reference angular velocity displacement, and the comparison result is transmitted to the self-adaptive diagonal recursion cerebellum model controller to realize closed-loop tracking control, so that an actual rotor angle of the magnetic gear composite motor is controlled to be able to track a set rotation angle instruction; unstable factors in transverse movement of the vehicle can be effectively suppressed; and the system has high robustness to external interference.

Description

technical field [0001] The invention relates to the field of electric vehicles, and more specifically, relates to a control system of a magnetic gear composite motor vehicle steering system and the electric vehicle. Background technique [0002] An electric vehicle refers to a vehicle powered by a vehicle-mounted power supply, driven by a motor to drive the wheels, and conforming to the requirements of road traffic and safety regulations. Traffic cases in recent years have shown that the system stability of electric vehicles is an important reason for traffic accidents. Unstable vehicle dynamic lateral behavior creates instability factors that lead to loss of vehicle control. [0003] The magnetic gear compound motor vehicle steering system of electric vehicles is a nonlinear and time-varying system. The parameter changes of the entire system, external force interference and friction will affect the accuracy of system control. The current control method controls the steeri...

AI Technical Summary

Problems solved by technology

The current control method controls the steering system as a whole, ignoring external disturbances (such as road irregularities, backlash caused by drive gears, and disturbances caused by gusts, etc.), resulting in unstable control of the steering system.

Images