Fuzzy control method for electric vehicle permanent magnet synchronous motor command filter considering iron loss

Abstract

The invention discloses an electric car permanent magnet synchronous motor command filtering fuzzy control method taking iron loss into account. According to the fuzzy control method, a command filtering technology is introduced in a traditional back-stepping design method, error caused by filtering is reduced by introduction of compensation signals, and a problem of 'calculation explosion' caused by continuous derivation in the traditional back-stepping control is overcome successfully. In the control method provided by the invention, a fuzzy logic system is used for approaching a nonlinear function in the system, a command filtering back-stepping technology and a fuzzy self-adaptive method are combined together to form a fuzzy self-adaptive speed controller; after being regulated by the control method provided by the invention, a motor can quickly run in a steady state, and the control method is more suitable for a control object needing fast dynamic response, such as an electric car drive system; simulation result shows that, with the control method provided by the invention, influence caused by inaccuracy of parameters can be overcome, ideal control effect is guaranteed beneficially, and fast and steady response to revolving speed is realized.

Description

Technical field [0001] The invention relates to a command filtering fuzzy control method of an electric vehicle permanent magnet synchronous motor considering iron loss. Background technique [0002] In recent years, the exhaust emissions from traditional cars that rely on burning gasoline and diesel as the main driving force have caused more and more serious environmental pollution. To this end, various countries strive to find and develop a new energy vehicle that can effectively reduce air pollution. The emergence and development of electric vehicles make people look forward to new directions to improve air quality. An electric vehicle refers to a vehicle that is powered by an on-board power supply and driven by a motor to drive wheels, and meets the requirements of road traffic and safety regulations. The composition of electric vehicles includes: electric drive and control system, driving force transmission and other mechanical systems, and working devices to complete esta...

AI Technical Summary

Problems solved by technology

However, the continuous derivation of the virtual control function in the traditional backstepping control is easy to cause the problem of "computational explosion"

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