Hybrid control system, method and device of distributed electric drive vehicle

Abstract

The invention provides a control system, method and device of a distributed electric drive vehicle. The control method comprises the steps of obtaining vehicle driving environment information and vehicle self-running state information, calculating the total longitudinal moment, total lateral moment and total yaw moment, switching operating conditions and outputting the vehicle drive moment. The control system comprises a state monitoring module, a motion control module, a hybrid control module and an actuator module, wherein the state monitoring module is used for acquiring the vehicle drivingenvironment information and the vehicle self-running state information; the motion control module calculates the expected vehicle drive moment; the actuator module achieves straight moving, braking and steering; and the control device comprises a longitudinal state monitor, a transverse state monitor, a driving motor and a steering motor, so that the controllable freedom degree of the vehicle isfurther increased, the longitudinal force of four wheels and the transverse force of the front wheels can be effectively controlled, and a larger space is provided for optimizing distribution and control of the longitudinal and transverse forces of each wheel.

Description

Technical field [0001] The invention relates to the field of electric drive automobile control, in particular to a hybrid control system, control method and control device of a distributed electric drive automobile. Background technique [0002] With the intensification of environmental problems and energy crisis, new energy vehicles have ushered in unprecedented development opportunities. The existing control systems of electric drive vehicles use a single tire force distribution method, which fails to make full use of tire limits under multiple working conditions. , Resulting in waste of resources, and slow response speed of vehicle working conditions switching, failing to achieve the intelligentization of vehicle working conditions switching; the control strategy is single, which cannot meet the driving expectations of the driver well, and cannot improve the vehicle performance under various working conditions. Power, maneuverability and economy. Summary of the invention [00...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the electric drive vehicle has a single control strategy and cannot well meet the driving expectations of the driver, the present invention proposes a hybrid control system, control method and control device for a distributed electric drive vehicle, using a distributed drive system, The driving process of the vehicle is divided into several independent driving conditions, which are converted into multi-control modes and coordinated switching between multi-control strategies. While meeting the driving expectations of the driver, the coordination of the driving torque during the driving process of the vehicle The distribution is optimized to improve the stability and operability of the vehicle

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