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Electric vehicle asynchronous motor fuzzy adaptive dynamic surface control method with consideration of iron loss

A technology of fuzzy self-adaptive and dynamic surface control, applied in motor generator control, electronic commutation motor control, control system, etc., can solve problems such as computational explosion

Active Publication Date: 2015-10-21
QINGDAO UNIV
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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"

Method used

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  • Electric vehicle asynchronous motor fuzzy adaptive dynamic surface control method with consideration of iron loss
  • Electric vehicle asynchronous motor fuzzy adaptive dynamic surface control method with consideration of iron loss
  • Electric vehicle asynchronous motor fuzzy adaptive dynamic surface control method with consideration of iron loss

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Embodiment Construction

[0138] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0139] to combine figure 1 As shown, the electric vehicle asynchronous motor fuzzy adaptive dynamic surface controller considering iron loss mainly includes asynchronous motor fuzzy adaptive dynamic surface controller 1, coordinate transformation unit 2, SVPWM inverter 3, speed detection unit 4 and current detection unit Unit 5. The speed detection unit 4 and the current detection unit 5 are mainly used to detect the current value and speed-related variables of the asynchronous motor. The actual measured current and speed variables are used as input, and the voltage is controlled by the fuzzy adaptive dynamic surface controller 1 of the asynchronous motor, and finally Converted to three-phase electricity to control the speed of the asynchronous motor. In order to design a more effective controller, it is necessary to establish a dynamic model ...

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Abstract

The present invention discloses an electric vehicle asynchronous motor fuzzy adaptive dynamic surface control method with the consideration of an iron loss. According to the control method, by using the nonlinear function in a fuzzy logic system approximation system, an adaptive backstepping method is used to design a controller, and the dynamic surface control technology and a fuzzy adaptive method are combined. Through introducing a first-order low-pass filter, a 'computing explosion' problem caused by continuous derivation in traditional backstepping control is successfully overcome. In addition, control signals uqs and uds only exist in an adaptive parameter Theta<^>, and the amount of computation is reduced. Through fuzzy adaptive dynamic surface control method adjustment, motor operation can rapidly reaches a stable state and is more suitable for a control object with the need of rapid dynamic response like an electric vehicle driving system, a simulation result shows that the influence of parameter uncertainty is overcome and an ideal control effect is ensured according to the control method, and the rapid and stable response of rotation speed is realized.

Description

technical field [0001] The invention belongs to the technical field of motor speed regulation control for electric vehicles, and relates to a fuzzy self-adaptive dynamic surface control method for electric vehicle asynchronous motors considering iron loss. Background technique [0002] Since the international financial crisis, developed countries such as the United States, Europe, Japan, and South Korea have been promoting the transformation and development of the automobile industry, and another round of upsurge in the development of new energy vehicles has formed globally. Among all technological innovations, motor drives play an extremely important role, because future drive methods must have the characteristics of low energy consumption, more environmental protection, and more sustainability. [0003] Electric vehicles include mechanical systems such as motor drive and control systems, driving force transmission, and working devices to complete established tasks. The mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00
Inventor 于金鹏马玉梅于海生山炳强李琪炜史发涛
Owner QINGDAO UNIV
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