A distributed electric vehicle stability control system and method equipped with non-pneumatic elastic wheels

Abstract

The invention discloses a distributed electric vehicle stability control system and method equipped with non-pneumatic elastic wheels. The distributed electric vehicle is equipped with non-pneumatic elastic wheels driven by hub motors. The stability control system includes upper control and a lower controller; wherein: the upper controller includes a sliding mode controller and a PID speed tracking controller, the sliding mode controller is used to obtain the desired yaw moment, and the PID speed tracking controller is used to track the vehicle speed of the car, and estimate The desired longitudinal force; the lower controller is the HCC chassis controller, combined with the slip energy calculation formula, the longitudinal force and yaw moment obtained by the upper controller are used to distribute the moment. The invention can improve the stability of the vehicle under emergency conditions, and reduce the slip energy of the vehicle, that is, reduce the wear of the wheels. The invention can effectively prevent the danger caused by the tire blowout when the wheel runs at high speed.

Description

technical field [0001] The invention relates to technologies in the field of automobile tire safety and intelligent control, in particular to a distributed electric vehicle stability control method. Background technique [0002] The safety of tires is an important subject of vehicle safety research. When a vehicle blows out at high speed, the fatality rate of the occupants is quite high. Therefore, it is urgent to propose a kind of novel safety tire. Non-pneumatic elastic wheels (NPEW) have no risk of tire blowout due to their non-pneumatic structure. However, solving the risk of tire blowout cannot completely solve the problem of vehicle driving safety. The wear of NPEW is inevitable, and how to reduce its wear degree is also an extremely important research direction. [0003] Distributed drive electric vehicles are an important branch of the development of electrification, and the torque of each driving wheel is independently controllable, which brings great advantages t...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of tire safety and driving stability of existing distributed electric vehicles under extreme working conditions, the purpose of the present invention is to provide a distributed electric vehicle stability control system and method equipped with non-pneumatic elastic wheels, so as to improve the stability of vehicles in High-speed driving and safety issues under extreme working conditions, improve the stability of the vehicle

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