Electric vehicle starting control method

Abstract

The invention discloses an electric vehicle starting control method, and relates to the technical field of electric vehicle starting control, when a rotating handle rotates to obtain a motor startingsignal, motor type judgment is firstly realized through positive and negative codes. Different motor parameters are identified by utilizing the discreteness characteristic of the motor under specificexcitation through giving a high pulse to the motor according to different inductance values of different motors and different generated currents, and the type of the connected motor is judged. And then Hall initial deviation angle compensation is realized through angle integral processing. And an operation mode is judged, soft start is realized by adopting a slope function method, and finally themotor is controlled to realize smooth start. The beneficial effects of the invention are that the method achieves the recognition of the motor parameters through the positive and negative codes, andsolves a problem that a single controller is matched with various motors; hall initial angle compensation is achieved through Hall self-learning, the problem of non-standard sectors of Hall sectors issolved, and smooth starting of the motor is achieved. Soft start is achieved through a slope function, and riding experience comfort is improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle startup control, and more specifically, relates to a method for smooth and smooth startup of an electric vehicle. Background technique [0002] With the development of the transportation industry, people have a variety of options for travel. Electric vehicles are not only convenient and fast, but also play a big role in short-distance commuting. For young people in most cities, it is a An important means of transportation, it is more flexible than buses and subways, and can carry people directly to their destinations. At the same time, the development of electric vehicles not only has very important strategic significance for energy saving and environmental protection, but also is closely related to the travel problems of hundreds of millions of people. Consumption and the promotion of urbanization and new rural construction are of great significance. With the continuous expansion of ma...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a starting control method for electric vehicles to solve the problems of traditional control methods, mismatching of different types of motors, difficulty in debugging different motor parameters, etc.

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