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A Position Tracking Controller and Control Method for Model Uncertain Induction Motor

A technology for asynchronous motors and controllers, applied in motor parameter estimation/correction, observer control, etc., can solve problems such as difficult observation of system uncertainties, improve transient control performance, reduce complexity, and ensure convergence sexual effect

Active Publication Date: 2021-01-15
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

The extended state observer is mainly used to estimate the system uncertainty and the sum of external disturbances affecting the system output, which solves the problem that the system uncertainty is difficult to observe, and also significantly reduces the complexity of the controller structure

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  • A Position Tracking Controller and Control Method for Model Uncertain Induction Motor
  • A Position Tracking Controller and Control Method for Model Uncertain Induction Motor
  • A Position Tracking Controller and Control Method for Model Uncertain Induction Motor

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordina...

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Abstract

The invention provides a position tracking controller for an asynchronous motor with model uncertainty and a control method. According to the method, the controller comprises seven stages of sub-controllers; on the basis of the uncertainty of an ESO estimation system and the sum of external disturbance affecting system output, the problem that system uncertainty is difficult to observe is solved,and meanwhile, the complexity of the structure of the controller is remarkably reduced. An expanded-state observer provided by the invention can ensure the convergence of observation error, and realize the accurate estimation and compensation of the model uncertainty of the asynchronous motor. Compared with a self-adaptive neural network / fuzzy control method, the expanded-state observer can ensurethe convergence of observation error without continuous excitation conditions required.

Description

technical field [0001] The invention relates to the technical field of asynchronous motor control, in particular to a position tracking controller structure and design method of a model uncertain asynchronous motor. Background technique [0002] Due to the advantages of simple structure, low price, stable and reliable operation, asynchronous motors have been widely used and gradually spread to many fields. How to control the high-quality performance of asynchronous motors has attracted much attention from scholars. The asynchronous motor is a multivariable, high-order, strongly coupled complex nonlinear system, and it is difficult to obtain accurate model parameters. Therefore, it is of great practical significance to consider the control problem of asynchronous motors with uncertain system models. [0003] In terms of position tracking control of asynchronous motors, corresponding research results have been obtained at home and abroad. Chen Zhonghua, Cao Haibo and others c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/14H02P23/12
CPCH02P23/12H02P23/14
Inventor 刘陆杨安馨王丹彭周华李铁山
Owner DALIAN MARITIME UNIVERSITY
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