Power-assisted control method of an electric vehicle based on information fusion

Abstract

The invention discloses a power-assisted control method of an electric vehicle based on information fusion. The control method comprises the steps: obtaining the treading frequency of a rider through a treading frequency sensor; acquiring a vehicle acceleration value and a vehicle attitude through an attitude detection sensor; presetting an initial power-assisted ratio and system cycle time; and carrying out data analysis on the current acceleration and the uphill angle of the vehicle, obtaining the current vehicle attitude through a Kalman filtering attitude solution algorithm, calculating the optimal power-assisted ratio corresponding to the current vehicle attitude. When a treading frequency signal is detected, the real-time optimal power-assisted ratio can be updated in the first system period; the power-assisted ratio is changed once according to the real-time posture of the moped in each system period later, so that the power-assisted ratio is intelligently changed along with the change of the riding road condition, the speed response of the moped is improved, and the riding feeling is optimized.

Description

Technical field [0001] The present invention relates to the field of electric vehicle power control technology, and in particular, to a power control method of an electric vehicle based on information fusion. Background technique [0002] In recent years, electric bicycles have gradually become an indispensable vehicle for people to travel by green, environmentally friendly, economic, convenient features. The electric bolet gradually entered the public's sight. It is a driving method of "human main, motor supplement". Can save time and effort. [0003] As a new type of electric two-wheeled vehicle, electric power bicycle is in its "electric assist" function, while maintaining the advantages of traditional bicycles, it can achieve efforts in starting, climbing and top wind; Among them, in the case of encountering the capacity of the upper slope or the change, how to help the motor is an obvious problem, and the control proportional control determines the scripns' riding comfort. T...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides an information fusion-based power assist control method for electric vehicles, which calculates the optimal power assist ratio according to road conditions, so as to solve the problem that the power assist effect of existing electric bicycles is not obvious under complex road conditions such as uphill, Poor riding experience

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