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A Gray Predictive Terminal Sliding Mode Control Method for Permanent Magnet Synchronous Motor

A permanent magnet synchronous motor, terminal sliding mode technology, applied in motor generator control, electronic commutation motor control, control system and other directions, can solve problems such as large buffeting and stability error

Active Publication Date: 2018-09-28
大连智鼎科技有限公司
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  • Abstract
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Problems solved by technology

But the problem is that the adjustment value given in the gray forecasting process is due to the limitations of the forecasting method itself, the overshoot is too large, causing large chattering, or causing stability errors, so the terminal sliding mode control with forecasting function still exists. Areas for improvement

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  • A Gray Predictive Terminal Sliding Mode Control Method for Permanent Magnet Synchronous Motor
  • A Gray Predictive Terminal Sliding Mode Control Method for Permanent Magnet Synchronous Motor
  • A Gray Predictive Terminal Sliding Mode Control Method for Permanent Magnet Synchronous Motor

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Embodiment Construction

[0056] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0057] Such as figure 1 As shown, it is a flow chart of a gray predictive terminal sliding mode control method for a permanent magnet synchronous motor provided in this embodiment, including establishing a permanent magnet synchronous motor mathematical model and using a genetic algorithm to reselect an appropriate m * and n * , Select the sliding mode surface of the terminal sliding mode, introduce the adjustment item according to the gray prediction principle and the terminal sliding mode control principle, and obtain the final control item, figure 2 is the controller structure diagram determined by the control method of this embodiment, including finding the main dev...

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Abstract

The invention provides a control method of grey forecast terminal sliding formwork applied in perpetual magnet synchronous motor, and relates to the technical field of alternating current motor. The method includes building a math model for a perpetual magnet synchronous motor, using a genetic algorithm to reselect suitable m* and n*, selecting a sliding formwork surface of the terminal sliding formwork, according to the principles of grey forecast and the terminal sliding formwork control introducing an adjusting item, and obtaining a final control item. The control method of grey forecast terminal sliding formwork applied in perpetual magnet synchronous motor, uses the principle of genetic algorithm to reselect two parameters (m and n) in the process of forecasting, to bring the two parameters to be more reasonable, to obtain more suitable error forecast value, and to make the control process of the perpetual magnet synchronous motor have higher precision, the buffeting is decreased and reduced, and does not affect the rapid response and strong robustness of the terminal sliding formwork control, and has real time property.

Description

Technical field: [0001] The invention relates to the technical field of control of AC motors, in particular to a gray prediction terminal sliding mode control method for permanent magnet synchronous motors. Background technique: [0002] The permanent magnet synchronous motor has the advantages of simple structure, small size, high power density, low processing and assembly costs, no electric ring brushes, etc., and is used in many fields. However, the permanent magnet synchronous motor has multivariable, strong coupling and nonlinear Problems make the control of permanent magnet synchronous motors complicated, especially the system parameter changes, the disturbance of external uncertain factors makes the control equation complex and difficult to implement, and the accuracy is not high, and the real-time performance is not strong. [0003] With the widespread use of permanent magnet synchronous motors in recent years, there has been a lot of research on the control method a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/14
CPCH02P21/0007H02P21/14
Inventor 张志锋吴雪松魏冰刘晓东
Owner 大连智鼎科技有限公司
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