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A fractional-order sliding mode control method for permanent magnet synchronous motor speed

A permanent magnet synchronous motor, fractional-order sliding mode technology, used in motor generator control, electronic commutation motor control, control system and other directions, can solve the problem of slow response speed, low control accuracy, and it is difficult to meet permanent magnet synchronous motors requirements, etc., to achieve the effect of strong dynamic characteristics and good static characteristics

Active Publication Date: 2021-01-26
NANJING TECH UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing fractional-order sliding molds have disadvantages such as low control accuracy and slow response speed, and it is difficult to meet the requirements of high-quality control systems for permanent magnet synchronous motors.

Method used

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  • A fractional-order sliding mode control method for permanent magnet synchronous motor speed
  • A fractional-order sliding mode control method for permanent magnet synchronous motor speed
  • A fractional-order sliding mode control method for permanent magnet synchronous motor speed

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Embodiment Construction

[0043] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0045] Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to ...

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Abstract

The invention discloses a fractional-order sliding mode control method for the rotational speed of a permanent magnet synchronous motor. S2: Using the adaptive super-helix algorithm to design the adaptive super-helix reaching law; S3: Designing an extended state observer to observe the motor load; S4: Based on the nonlinear fractional-order PID sliding mode surface and the adaptive super-helix reaching law The permanent magnet synchronous motor sliding mode speed controller equation is used to control the permanent magnet synchronous motor speed. On the basis of the fractional-order PID sliding mode surface, the present invention combines nonlinear functions to construct a nonlinear fractional-order PID sliding mode surface, which solves the problem of low control precision and slow response speed of the traditional fractional-order PID sliding mode surface in the sliding state And other issues.

Description

technical field [0001] The invention relates to the technical field of permanent magnet synchronous motors, in particular to a fractional-order sliding mode control method for the rotational speed of permanent magnet synchronous motors. Background technique [0002] With its inherent advantages of low rotor inertia, high efficiency, and high power density, permanent magnet synchronous motors have gradually become one of the most competitive motion control products and have been widely used in industrial applications. In such applications, the speed control of permanent magnet synchronous motors becomes a critical task. The traditional PID (proportional-integral-differential) controller has the advantages of simple structure and easy implementation, so the traditional PID controller has been widely used in the speed control of permanent magnet synchronous motors. However, due to the nonlinear, time-varying, and strong coupling characteristics of permanent magnet synchronous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/13H02P6/34
CPCH02P21/0007H02P21/13H02P6/34
Inventor 张广明高鹏梅磊欧阳慧珉潘慧慧高丽华
Owner NANJING TECH UNIV
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