Asynchronous motor position tracking control method based on finite time dynamic surface

An asynchronous motor, limited time technology used in motor generator control, electronically commutated motor control, control systems, etc.

Active Publication Date: 2019-08-09
QINGDAO UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to propose a position tracking control method for asynchronous motors based on a finite time dynamic surface, which solves the "computational explosion" of the traditional backstepping method by using the dynamic surface technology in consideration of iron loss and input saturation problem, combined with finite time technology, so as to achieve efficient tracking control of the position of the asynchronous motor

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  • Asynchronous motor position tracking control method based on finite time dynamic surface
  • Asynchronous motor position tracking control method based on finite time dynamic surface
  • Asynchronous motor position tracking control method based on finite time dynamic surface

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Embodiment Construction

[0145] The basic idea of ​​the present invention is: obtain the mathematical model of the asynchronous motor with iron loss from the reference and simplify it to a certain extent, use the self-adaptive backstepping method to transform the complex high-order system into a plurality of simple low-order subsystems, through Introduce virtual control variables to construct the controller, and under the premise of considering the adverse effects of input saturation, introduce the dynamic surface technology into the selection of each low-order subsystem and the overall Lyapunov function and the construction of the intermediate virtual control signal. The control law is obtained by recursion, and the influence of unknown parameters is reduced by constructing the corresponding adaptive law; the introduction of dynamic surface technology effectively solves the problem of "computational explosion" in the traditional backstepping method, and the introduction of finite time technology , so ...

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Abstract

The invention discloses an asynchronous motor position tracking control method based on a finite time dynamic surface. Aiming at the problems of iron loss and input saturation in an asynchronous motor, the control method introduces a dynamic surface technology into the traditional backstepping method, and successfully overcomes the problem of 'calculation explosion' caused by continuous derivationin the traditional backstepping control; the method utilizes a fuzzy logic system to approach a nonlinear function in a motor driving system, and combines a dynamic surface technology with finite time to construct a controller; after the method is used for regulation, the output signal can track the expected signal within a limited time, and a simulation result shows that the method can accelerate the response speed, can improve the anti-interference capability, can reduce the tracking error and can achieve an ideal tracking effect.

Description

technical field [0001] The invention belongs to the technical field of position tracking control of asynchronous motors, and in particular relates to a position tracking control method of an asynchronous motor based on a finite time dynamic surface. Background technique [0002] Asynchronous motor, also known as induction motor, is a type of motor in which the rotating magnetic field formed after the stator winding and the magnetic field of the induced current in the rotor winding physically interact to generate electromagnetic torque to drive the rotor to rotate. It is a type of motor This kind of AC motor, whose power ranges from a few watts to tens of thousands of kilowatts, is the most widely used motor in all walks of life and people's daily life in our country, providing power for various mechanical equipment and household appliances. For example, machine tools, fans, water pumps, metallurgy, light industrial machinery, small and medium-sized steel rolling equipment, a...

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 于金鹏马玉梅刘占杰罗慧娟付程王博张国斌赵林
Owner QINGDAO UNIV
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