A torque distribution control method and system for a four-wheel independently driven electric vehicle

Abstract

The invention relates to a four-wheel independently driven electric vehicle torque distribution control method and a four-wheel independently driven electric vehicle torque distribution control system. The method comprises the following steps of (1) acquiring a driver operation action signal and vehicle driving parameters in real time, and after pre-processing the acquired data, storing the data; (2) according to the data acquired in the step (1), identifying the current driving intention of a driver; (3) according to the driving intention identifying result, adopting a corresponding control policy to control, and according to the control policy, sending a torque control order to each driving motor. The system comprises a data acquiring module, a driving intention identifying module and a torque distribution control module which are sequentially connected. Compared with the prior art, torque can be reasonably distributed to four wheels according to the driving intentions of the driver, such as ordinary acceleration, fast acceleration and turning driving, the energy utilization of the finished vehicle is improved, meanwhile, the driving stability of the vehicle under a limited condition can also be improved, and the advantage of independent driving is fully played.

Description

technical field [0001] The invention relates to a control technology for a four-wheel independently driven electric vehicle, in particular to a torque distribution control method and system for a four-wheel independently driven electric vehicle. Background technique [0002] The widespread application of automobiles has played a major role in promoting the progress of human society, but it has also brought about global air pollution and energy shortages. Improving automobile emission performance and reducing its energy consumption is an urgent need for all countries in the world, including my country. The problem to be solved. Pure electric vehicles, hybrid electric vehicles and fuel cell vehicles are the mainstream direction of new energy-saving vehicle technology development. Compared with the general electric vehicle structure in which the electric vehicle uses the motor as the driving mechanism and has an electric drive management system, a very highly integrated electri...

AI Technical Summary

Problems solved by technology

[0005] However, the current patents or products rarely have torque distribution control combined with the driver's intention, especially the dynamics integrated control based on the driving intention, so the control strategy for the car cannot better respond to the driver's request

At the same time, due to the inaccurate identification of driving intentions by existing products, the corresponding auxiliary control systems issue interventions or interventions that are different from the driver's real intentions.

Images