Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer
A model-free fractional-order sliding mode control (MFFOSMC) method based on a non-linear disturbance observer is proposed for the electric drive system in this paper. Firstly, the ultra-local model is established by using the mathematical model of electric drive system under parameter perturbation....
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Fractal and Fractional |
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| Online Access: | https://www.mdpi.com/2504-3110/6/10/603 |
| _version_ | 1797441000078049280 |
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| author | Yingxin Yu Xudong Liu |
| author_facet | Yingxin Yu Xudong Liu |
| author_sort | Yingxin Yu |
| collection | DOAJ |
| description | A model-free fractional-order sliding mode control (MFFOSMC) method based on a non-linear disturbance observer is proposed for the electric drive system in this paper. Firstly, the ultra-local model is established by using the mathematical model of electric drive system under parameter perturbation. Then, aiming at reducing the chattering of the sliding mode controller and improving the transient response, a model-free fractional-order sliding mode controller is designed based on fractional-order theory. Next, considering that the traditional sliding mode control can only suppress matched disturbance and that it is sensitive to mismatched disturbance, a non-linear disturbance observer is used to estimate disturbance, and the estimated variables are used in the design of a sliding mode surface to improve the tracking accuracy of the system. Finally, the experiment is completed on an asynchronous motor drive platform. Compared with the model-free integer-order sliding mode control (MFIOSMC), the results show that the proposed method has good dynamic response and strong robustness. Meanwhile, the proposed method reduces the dependence on mathematical models. |
| first_indexed | 2024-03-09T12:17:33Z |
| format | Article |
| id | doaj.art-2c7fa7f9703643858596187ea395093c |
| institution | Directory Open Access Journal |
| issn | 2504-3110 |
| language | English |
| last_indexed | 2024-03-09T12:17:33Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fractal and Fractional |
| spelling | doaj.art-2c7fa7f9703643858596187ea395093c2023-11-30T22:44:46ZengMDPI AGFractal and Fractional2504-31102022-10-0161060310.3390/fractalfract6100603Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance ObserverYingxin Yu0Xudong Liu1College of Automation, Qingdao University, Qingdao 266071, ChinaCollege of Automation, Qingdao University, Qingdao 266071, ChinaA model-free fractional-order sliding mode control (MFFOSMC) method based on a non-linear disturbance observer is proposed for the electric drive system in this paper. Firstly, the ultra-local model is established by using the mathematical model of electric drive system under parameter perturbation. Then, aiming at reducing the chattering of the sliding mode controller and improving the transient response, a model-free fractional-order sliding mode controller is designed based on fractional-order theory. Next, considering that the traditional sliding mode control can only suppress matched disturbance and that it is sensitive to mismatched disturbance, a non-linear disturbance observer is used to estimate disturbance, and the estimated variables are used in the design of a sliding mode surface to improve the tracking accuracy of the system. Finally, the experiment is completed on an asynchronous motor drive platform. Compared with the model-free integer-order sliding mode control (MFIOSMC), the results show that the proposed method has good dynamic response and strong robustness. Meanwhile, the proposed method reduces the dependence on mathematical models.https://www.mdpi.com/2504-3110/6/10/603model-free fractional-order sliding mode control (MFFOSMC)electric drive systemnon-linear disturbance observer (NDO)mismatched disturbanceasynchronous motor (AM) |
| spellingShingle | Yingxin Yu Xudong Liu Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer Fractal and Fractional model-free fractional-order sliding mode control (MFFOSMC) electric drive system non-linear disturbance observer (NDO) mismatched disturbance asynchronous motor (AM) |
| title | Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer |
| title_full | Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer |
| title_fullStr | Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer |
| title_full_unstemmed | Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer |
| title_short | Model-Free Fractional-Order Sliding Mode Control of Electric Drive System Based on Nonlinear Disturbance Observer |
| title_sort | model free fractional order sliding mode control of electric drive system based on nonlinear disturbance observer |
| topic | model-free fractional-order sliding mode control (MFFOSMC) electric drive system non-linear disturbance observer (NDO) mismatched disturbance asynchronous motor (AM) |
| url | https://www.mdpi.com/2504-3110/6/10/603 |
| work_keys_str_mv | AT yingxinyu modelfreefractionalorderslidingmodecontrolofelectricdrivesystembasedonnonlineardisturbanceobserver AT xudongliu modelfreefractionalorderslidingmodecontrolofelectricdrivesystembasedonnonlineardisturbanceobserver |