Differential control system for two-wheeled driven electric vehicle

Abstract

The invention relates to a differential speed controlling system of an electric vehicle based on two driving wheels, which comprises a left driving module, a right driving module and a coordinate module which receives external controlling signals and outputs corresponding working signals to control the output power of the left driving module and the right driving module which transmit the torque signals of the two driving wheels to the coordinate module which determines whether to adjust the working signals of the two driving modules according to a principle that the torques of the two driving wheels are the same; the coordinate module adjusts the working signals of the left driving module and the right driving module through a PID controller. The invention is simple in system structure and easy in realization; besides, the invention can prevent the vehicle from sliding, reduce the wear of the tires and guarantee the driving stability of the vehicle. In addition, the invention uses a single-chip, so the precision of signal processing is high, the speed is high, and the torques of the driving wheels can be adjusted in real time without any transmission mechanism or differential gear, thus saving the space and increasing the efficiency of the transmission system.

Description

technical field [0001] The invention relates to a control system of an electric two-wheel drive vehicle, in particular to a differential control system for a two-wheel drive vehicle that coordinates and controls the output power of two drive motors when the target speeds of the two drive wheels are inconsistent. Background technique [0002] As petroleum energy becomes more and more scarce, the trend of electric vehicles gradually replacing fuel vehicles has become irresistible. When electric vehicles are turning or driving on uneven roads, the rotation speed of each wheel is required to be different and coordinated with the wheel center speed. Traditional fuel vehicles ensure that the wheels on both sides can rotate at different speeds through the mechanical differential between the left and right wheels, so as to meet the requirements of vehicle driving kinematics, but at the same time, it also increases the complexity of the shock absorption suspension system and reduces t...

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is: the existing mechanical differential increases the complexity of the vehicle damping suspension system and reduces the efficiency of the system; Most electric vehicles do not have a differential system, which is prone to slippage, increases the fatigue of the wheel axle, and affects the service life of the vehicle

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