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Observer-based Random Command Filtering Fuzzy Control Method for Permanent Magnet Synchronous Motors

A technology of permanent magnet synchronous motor and fuzzy control, which is applied in motor control, motor generator control, electronic commutation motor control, etc., and can solve problems such as low reliability, high cost, and difficulty in ensuring accuracy

Active Publication Date: 2021-02-26
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are many disadvantages in the working process of the sensor, such as high cost, difficult to guarantee accuracy and low reliability, so it is not suitable for some occasions with high precision requirements.

Method used

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  • Observer-based Random Command Filtering Fuzzy Control Method for Permanent Magnet Synchronous Motors
  • Observer-based Random Command Filtering Fuzzy Control Method for Permanent Magnet Synchronous Motors
  • Observer-based Random Command Filtering Fuzzy Control Method for Permanent Magnet Synchronous Motors

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Embodiment Construction

[0157] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0158] Basic thought of the present invention is:

[0159] The fuzzy system is used to approximate the unknown random nonlinear function in the permanent magnet synchronous motor drive system. At the same time, based on the Lyapunov function, the intermediate virtual control signal is constructed by using the backstepping method, and the control law is obtained step by step, so as to ensure that the voltage and current are stable in a bounded area. Within, the tracking error is reduced and the control precision is improved.

[0160] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0161] Such as figure 1 As shown in Fig. 1, the random command filter fuzzy control method of permanent magnet synchronous motor considering iron loss mainly includes observer-based permane...

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Abstract

The invention belongs to the technical field of permanent magnet synchronous motor position tracking control, and particularly discloses an observer-based random command filtering fuzzy control methodfor a permanent magnet synchronous motor. The method aims at the control precision requirement of the permanent magnet synchronous motor and the random disturbance and non-linearity problems in a driving system. According to the method, the problem of calculation explosion in the calculation process is solved by introducing the command filtering technology into the traditional backstepping method. Meanwhile, a fuzzy logic system is used for approximating a nonlinear function in a system, so that a fuzzy self-adaptive position tracking controller is constructed. Meanwhile, the angular velocityof a rotor is observed through an observer, and losses caused by direct measurement are reduced. The method provided by the invention can ensure that the tracking error of the system can be convergedto a neighborhood which is small enough of an original point.

Description

technical field [0001] The invention belongs to the technical field of position tracking control of permanent magnet synchronous motors, and in particular relates to an observer-based fuzzy control method for random command filtering of permanent magnet synchronous motors. Background technique [0002] In recent years, people have paid more and more attention to environmental protection, and electric vehicles have been vigorously developed due to their advantages of less pollution and low cost. As one of the driving devices of electric vehicles, permanent magnet synchronous motors (PMSMs) have the characteristics of high work efficiency, high reliability, and wide application range, so they are used in manufacturing, industry and other fields. However, the permanent magnet synchronous motor has the characteristics of strong coupling, multi-variable and high-low nonlinearity. Therefore, how to achieve accurate and effective control of the permanent magnet synchronous motor un...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/18H02P21/13
CPCH02P21/001H02P21/0017H02P21/13H02P2203/03H02P21/18
Inventor 于金鹏马玉梅程帅胡成江邹明峻张国斌
Owner QINGDAO UNIV
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