Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor
This paper presents a novel adaptive twisting sliding mode control strategy combined with a speed-sensorless cascade nonlinear observer for the high-performance control of linear induction motors (LIMs). The primary objective is to achieve accurate speed and rotor flux tracking without relying on me...
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MDPI AG
2025-06-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/14/7/318 |
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| author | Lei Zhang Xiaodong Xie Dabiao Wu Zicheng Wang Jianli Wang Jiaxin Jing Huazhen Deng Junkai Li Jie Huang Jingli Huang |
| author_facet | Lei Zhang Xiaodong Xie Dabiao Wu Zicheng Wang Jianli Wang Jiaxin Jing Huazhen Deng Junkai Li Jie Huang Jingli Huang |
| author_sort | Lei Zhang |
| collection | DOAJ |
| description | This paper presents a novel adaptive twisting sliding mode control strategy combined with a speed-sensorless cascade nonlinear observer for the high-performance control of linear induction motors (LIMs). The primary objective is to achieve accurate speed and rotor flux tracking without relying on mechanical sensors, thereby enhancing system reliability and reducing hardware complexity. For this purpose, a cascade nonlinear observer is designed and applied to the class of nonlinear affine systems representing LIM dynamics. Based on the interconnected form of the LIM mathematical model, the observer simultaneously reconstructs both the motor speed and rotor fluxes in real time. The stability of the proposed cascade observer is analyzed using Lyapunov theory, ensuring the convergence of the estimation errors under bounded disturbances. Complementing the observer, two adaptive gain twisting sliding mode controllers are developed: one for speed tracking and another for flux regulation. These controllers are robust against external disturbances and parameter uncertainties, even when the bounds of such disturbances are unknown. This feature significantly enhances the practical applicability of the control system in real-world industrial environments. To validate the performance and robustness of the proposed control scheme, a hardware-in-the-loop (HIL) experiment was conducted. Comparative studies with existing state-of-the-art sensorless control methods demonstrate that the proposed cascade nonlinear observer-based approach achieves faster convergence, higher estimation accuracy, and better disturbance rejection capabilities, while requiring less computational effort. |
| format | Article |
| id | doaj-art-a384c7e9fcb046f3be629f111f587b2f |
| institution | DOAJ |
| issn | 2076-0825 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj-art-a384c7e9fcb046f3be629f111f587b2f2025-08-20T03:13:39ZengMDPI AGActuators2076-08252025-06-0114731810.3390/act14070318Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction MotorLei Zhang0Xiaodong Xie1Dabiao Wu2Zicheng Wang3Jianli Wang4Jiaxin Jing5Huazhen Deng6Junkai Li7Jie Huang8Jingli Huang9College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, ChinaCollege of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, ChinaHangzhou Qili Technology Co., Ltd., Hangzhou 311199, ChinaCollege of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, ChinaCollege of Electrical Engineering, Henan University of Technology, Zhengzhou 450001, ChinaHangzhou Qili Technology Co., Ltd., Hangzhou 311199, ChinaHangzhou Innoway Technology Co., Ltd., Hangzhou 311199, ChinaCollege of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, ChinaCollege of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, ChinaThis paper presents a novel adaptive twisting sliding mode control strategy combined with a speed-sensorless cascade nonlinear observer for the high-performance control of linear induction motors (LIMs). The primary objective is to achieve accurate speed and rotor flux tracking without relying on mechanical sensors, thereby enhancing system reliability and reducing hardware complexity. For this purpose, a cascade nonlinear observer is designed and applied to the class of nonlinear affine systems representing LIM dynamics. Based on the interconnected form of the LIM mathematical model, the observer simultaneously reconstructs both the motor speed and rotor fluxes in real time. The stability of the proposed cascade observer is analyzed using Lyapunov theory, ensuring the convergence of the estimation errors under bounded disturbances. Complementing the observer, two adaptive gain twisting sliding mode controllers are developed: one for speed tracking and another for flux regulation. These controllers are robust against external disturbances and parameter uncertainties, even when the bounds of such disturbances are unknown. This feature significantly enhances the practical applicability of the control system in real-world industrial environments. To validate the performance and robustness of the proposed control scheme, a hardware-in-the-loop (HIL) experiment was conducted. Comparative studies with existing state-of-the-art sensorless control methods demonstrate that the proposed cascade nonlinear observer-based approach achieves faster convergence, higher estimation accuracy, and better disturbance rejection capabilities, while requiring less computational effort.https://www.mdpi.com/2076-0825/14/7/318linear induction motorcascade nonlinear observerstability analysisadaptive twisting controllerspeed-sensorlessadaptation algorithm |
| spellingShingle | Lei Zhang Xiaodong Xie Dabiao Wu Zicheng Wang Jianli Wang Jiaxin Jing Huazhen Deng Junkai Li Jie Huang Jingli Huang Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor Actuators linear induction motor cascade nonlinear observer stability analysis adaptive twisting controller speed-sensorless adaptation algorithm |
| title | Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor |
| title_full | Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor |
| title_fullStr | Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor |
| title_full_unstemmed | Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor |
| title_short | Cascade Nonlinear Observer-Based Speed-Sensorless Adaptive Twisting Sliding Mode Control of Linear Induction Motor |
| title_sort | cascade nonlinear observer based speed sensorless adaptive twisting sliding mode control of linear induction motor |
| topic | linear induction motor cascade nonlinear observer stability analysis adaptive twisting controller speed-sensorless adaptation algorithm |
| url | https://www.mdpi.com/2076-0825/14/7/318 |
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