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State constraint based asynchronous motor fuzzy position tracking control method

A technology of asynchronous motor and tracking control, applied in motor generator control, electronic commutation motor control, control system, etc.

Active Publication Date: 2017-10-20
QINGDAO UNIV
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Problems solved by technology

[0005] The object of the present invention is to propose a kind of fuzzy position tracking control method based on state-limited asynchronous motor, which is based on Barrier Lyapunov function, combines backstepping method and fuzzy self-adaptive technology, effectively solves the problem of uncertain parameters and The problem of position tracking control of asynchronous motor in the case of load torque disturbance

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  • State constraint based asynchronous motor fuzzy position tracking control method
  • State constraint based asynchronous motor fuzzy position tracking control method
  • State constraint based asynchronous motor fuzzy position tracking control method

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Embodiment Construction

[0107] The basic idea of ​​the present invention is: use the fuzzy logic system to approach the unknown nonlinear function in the asynchronous motor drive system, at the same time, based on the Barrier Lyapunov function, use the backstepping method to construct the intermediate virtual control signal, and gradually recursively obtain the control rate, so as to The state quantity and control quantity of the motor control and drive system are constrained to ensure that the voltage and current are stable in a bounded area, which reduces the error and improves the control accuracy.

[0108] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0109] Such as figure 1 As shown, the fuzzy position tracking control method based on the state-limited asynchronous motor mainly includes the fuzzy position-tracking controller 1 based on the state-limited asynchronous motor, the coordinate transformation unit 2, the S...

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Abstract

The invention belongs to the technical field of asynchronous motor position tracking control, and specifically discloses a state constraint based asynchronous motor fuzzy position tracking control method. The method is characterized in that state variables and controlled variables of a motor system are constrained based on a Barrier Lyapunov function in allusion to control accuracy requirements for an asynchronous motor and a nonlinear problem in a driving system, a fuzzy logic system is utilized at the same time to approach to a nonlinear function in the system at the same time, and a fuzzy adaptive position tracking controller is built. According to the method, a tracking error of the system can be ensured to converge to a small enough neighborhood of the origin, simulation results show that the new control method ensures each state variable of the motor to be within a constraint space of the system, and controller input ud and controlled input uq are stabilized within a bounded region. The method disclosed by the invention realizes fast and effective response for asynchronous motor position tracking control.

Description

technical field [0001] The invention belongs to the technical field of position tracking control of asynchronous motors, in particular to a state-limited fuzzy position tracking control method of asynchronous motors. Background technique [0002] Induction motors (IMs) are AC motors, also called induction motors, which are mainly used as motors. Asynchronous motors are widely used in industrial and agricultural production, such as machine tools, water pumps, metallurgy, mining equipment and light industrial machinery, etc., all use it as a prime mover, and its capacity ranges from several kilowatts to several thousand kilowatts. The increasingly popular household appliances, such as washing machines, fans, refrigerators, and air conditioners, use one-way asynchronous motors with a capacity ranging from several watts to several kilowatts. In aerospace, computer and other high-tech fields. Asynchronous motors can also be used as generators, such as small hydropower stations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/18
CPCH02P21/001H02P21/18
Inventor 于金鹏马玉梅于海生刘莹莹牛浩
Owner QINGDAO UNIV
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