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Permanent magnet linear motor data driving discrete iteration integral sliding mode control method and system

A permanent magnet linear motor, integral sliding mode technology, applied in the control system, AC motor control, estimation/correction of motor parameters, etc., to achieve the effect of good anti-interference ability, simplified design process, high control accuracy

Active Publication Date: 2021-05-07
SHANDONG JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the deficiencies in the prior art, this application provides a permanent magnet linear motor data-driven discrete iterative integral sliding mode control method and system; it solves the fusion problem of iterative dynamic linearization data model and iterative integral sliding mode control, and makes the permanent magnet Linear motor trajectory tracking control system achieves higher control accuracy

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  • Permanent magnet linear motor data driving discrete iteration integral sliding mode control method and system
  • Permanent magnet linear motor data driving discrete iteration integral sliding mode control method and system
  • Permanent magnet linear motor data driving discrete iteration integral sliding mode control method and system

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Embodiment 1

[0037] This embodiment provides a data-driven discrete iterative integral sliding mode control method for a permanent magnet linear motor;

[0038] Such as figure 1 As shown, the permanent magnet linear motor data-driven discrete iterative integral sliding mode control method includes:

[0039] S101: In the case of external disturbances, based on the obtained output displacement and control current of the sliding table of the target permanent magnet linear motor, establish an initial iterative mathematical model of the target permanent magnet linear motor;

[0040] S102: Calculate and improve the initial iterative mathematical model based on pseudo partial derivative estimation to obtain an improved iterative mathematical model;

[0041] S103: Construct a discrete-time-integral sliding mode controller based on the improved iterative mathematical model; construct a control law corresponding to the discrete-time-integral sliding mode controller;

[0042] S104: improving the co...

Embodiment 2

[0176] This embodiment provides a permanent magnet linear motor data-driven discrete iterative integral sliding mode control system;

[0177] Permanent magnet linear motor data-driven discrete iterative integral sliding mode control system, including:

[0178] A model building module configured to: establish an initial iterative mathematical model of the target permanent magnet linear motor based on the obtained output displacement and control current of the sliding table of the target permanent magnet linear motor in the presence of an external disturbance;

[0179] The model improvement module is configured to: calculate and improve the initial iterative mathematical model based on pseudo partial derivative estimation, and obtain an improved iterative mathematical model;

[0180] A controller and control law building module, which is configured to: build a discrete time integral sliding mode controller based on the improved iterative mathematical model; build a control law c...

Embodiment 3

[0187] This embodiment also provides an electronic device, including: one or more processors, one or more memories, and one or more computer programs; wherein, the processor is connected to the memory, and the one or more computer programs are programmed Stored in the memory, when the electronic device is running, the processor executes one or more computer programs stored in the memory, so that the electronic device executes the method described in Embodiment 1 above.

[0188] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, o...

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Abstract

The invention discloses a permanent magnet linear motor data-driven discrete iterative integral sliding mode control method and system. The method comprises the steps of: building an initial iterative mathematical model of a target permanent magnet linear motor based on the obtained output displacement and control current of a sliding table of the target permanent magnet linear motor in the presence of external disturbance; improving the initial iterative mathematical model based on pseudo partial derivative estimation and calculation to obtain an improved iterative mathematical model; constructing a discrete time integral sliding mode controller based on the improved iterative mathematical model; constructing a control law corresponding to the discrete time integral sliding mode controller; improving the control law to obtain an improved control law; and performing operation control on the target permanent magnet linear motor based on the improved control law.

Description

technical field [0001] The present application relates to the technical field of automatic control, in particular to a data-driven discrete iterative integral sliding mode control method and system for a permanent magnet linear motor. Background technique [0002] The statements in this section merely mention the background art related to this application, and do not necessarily constitute the prior art. [0003] The permanent magnet linear motor has many advantages such as large thrust, high speed and high precision. The conversion process from electric energy to linear motion does not require any intermediate conversion mechanism, and has been successfully used in the industrial field. However, the control performance of permanent magnet linear motor can be affected by various nonlinear factors, and the existence of nonlinear uncertainty interference seriously affects the performance of the control system. For example, permanent magnet linear motors are subject to paramet...

Claims

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Application Information

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IPC IPC(8): H02P23/00H02P23/14H02P25/06
CPCH02P23/0009H02P23/0022H02P23/0077H02P23/14H02P25/06
Inventor 侯明冬韩耀振潘为刚杨仁明胡冠山李光叶张允刚
Owner SHANDONG JIAOTONG UNIV
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