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Interactive model reference adaptive speed and stator resistance identification method based on sliding-mode control

A technology of stator resistance and model reference, used in the control of generators, control of electromechanical brakes, control of electromechanical transmissions, etc.

Inactive Publication Date: 2014-08-27
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the present invention provides an interactive model reference adaptive speed and stator resistance identification method based on sliding mode control, using To solve the problem that when the operation of the speed identification system is disturbed, the error adjustment of the traditional speed and stator resistance identification system is realized by PI control, which cannot provide satisfactory performance due to fixed parameters

Method used

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  • Interactive model reference adaptive speed and stator resistance identification method based on sliding-mode control
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  • Interactive model reference adaptive speed and stator resistance identification method based on sliding-mode control

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Embodiment 1

[0068] Embodiment 1: as Figure 1-4 As shown, an interactive model reference adaptive speed and stator resistance identification method based on sliding mode control, first in the two-phase static Under the coordinate system, establish the mathematical model of the asynchronous motor; calculate the voltage model and current model according to the mathematical model of the asynchronous motor, observe the rotor flux linkage through the voltage model and current model, and then construct an interactive model to refer to the adaptive speed identification system and interactive Model reference adaptive stator resistance identification system; according to the constructed interactive model reference adaptive speed identification system and interactive model reference adaptive stator resistance identification system, the sliding mode control method is used to design the speed identifier and stator resistance identifier To identify the speed and stator resistance of the asynchronous...

Embodiment 2

[0094] Embodiment 2: as Figure 1-4 As shown, an interactive model reference adaptive speed and stator resistance identification method based on sliding mode control, the steps of the method are as follows: first, in the two-phase static Under the coordinate system, establish the mathematical model of the asynchronous motor; calculate the voltage model and current model according to the mathematical model of the asynchronous motor, observe the rotor flux linkage through the voltage model and current model, and then construct an interactive model to refer to the adaptive speed identification system and interactive Model reference adaptive stator resistance identification system; according to the constructed interactive model reference adaptive speed identification system and interactive model reference adaptive stator resistance identification system, the sliding mode control method is used to design the speed identifier and stator resistance identifier To identify the speed a...

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Abstract

The invention relates to an interactive model reference adaptive speed and stator resistance identification method based on sliding-mode control and belongs to the technical field of motor control. The method includes the steps that in a two phase (alpha beta) static coordinate system, an asynchronous motor mathematical model is built; a voltage module and a current model are obtained according to the asynchronous motor mathematical model, and rotor magnetic flux linkage is observed through the voltage model and the current model; then, an interactive model reference adaptive speed identification system and an interactive model reference adaptive stator resistance identification system are built; according to the built interactive model reference adaptive speed identification system and the built interactive model reference adaptive stator resistance identification system, a sliding-mode control method is adopted for designing a speed identifier and a stator resistance identifier to identify the rotating speed and the stator resistance of an asynchronous motor. Compared with a conventional model reference adaptive method, the method has the advantages that complex PI gain adjustment is omitted, the response speed is higher, and the accuracy of the rotating speed is higher.

Description

technical field [0001] The invention relates to an interactive model reference adaptive speed and stator resistance identification method based on sliding mode control, which belongs to the technical field of motor control. Background technique [0002] Asynchronous motors have the characteristics of simple structure, sturdy and durable, low cost, reliable operation, low torque ripple, low noise and high speed limit. In asynchronous motor vector control, the position information of the rotor can be obtained directly through the position or speed sensor, but the installation of the sensor increases the cost and the inertia of the rotating shaft, which affects the dynamic and static performance of the system. The control system without speed sensor does not need to install hardware, which eliminates all kinds of troubles caused by the speed sensor, improves the reliability of the system, and reduces the cost; on the other hand, it makes the system small in size and light in we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14
Inventor 邹金慧邓安彤石磊范玉刚吴建德黄国勇王晓东张光辉邵宗凯
Owner KUNMING UNIV OF SCI & TECH
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