Article
Automation & Control Systems
Xinxin Liu, Xiaojie Su, Tao Li
Summary: This paper investigates a composite controller for load frequency control (LFC) in multi-region interconnected power systems via sliding mode observer design. State observers (SOs) and disturbance observers (DOs) are implied for the LFC based on the load variations with communication delays and quantization output measurements. A nonlinear integral sliding surface combined with a composite controller is developed to optimize control performance. Moreover, a three-area power system model is used to demonstrate the effectiveness of the proposed scheme in the illustrative example, confirming that frequency deviations can be rejected despite delays, uncertainties, and quantization during transmission.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2023)
Article
Automation & Control Systems
Yueheng Ding, Xinggang Yan, Zehui Mao, Bin Jiang, Sarah K. Spurgeon
Summary: This paper considers a class of nonlinear interconnected systems with matched and unmatched uncertainties and proposes a decentralized control scheme based on sliding mode techniques to ensure tracking of desired signals. By appropriate transformations, the system is transformed into a new interconnected system with an appropriate structure for sliding surface design and decentralized control design. The proposed conditions guarantee the stability of the controller and boundedness of the tracking errors. The developed results are applied to a river quality control problem.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2023)
Article
Automation & Control Systems
Nan Ji, Xing-Gang Yan, Zehui Mao, Dongya Zhao, Bin Jiang
Summary: This paper considers the stabilisation problem for a class of nonlinear interconnected systems with uncertainties and unknown interconnections. A composite sliding surface is designed to ensure uniformly asymptotically stable sliding motion, and decentralised state feedback sliding mode control is proposed for driving the systems to the surface and maintaining sliding motion. The control design uses general nonlinear forms for uncertainties and interconnections to enhance robustness without requiring linearisation of isolated nominal subsystems or interconnections.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2022)
Article
Automation & Control Systems
Cuauhtemoc Acosta Lua, Stefano Di Gennaro, Jean-Pierre Barbot
Summary: An Antilock Braking System (ABS) is characterized by nonlinear dynamics and parameter uncertainties. This paper proposes a super-twisting controller to overcome the challenges posed by the uncertainties. The controller is implemented in a laboratory setup mimicking a quarter car model and utilizes a super-twisting estimator to estimate the friction coefficient between the tire and the road. Experimental results show a considerable increase in the efficiency of the control system.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Article
Automation & Control Systems
Yueheng Ding, Xing-Gang Yan, Zehui Mao, Sarah K. Spurgeon, Bin Jiang
Summary: This article proposes a decentralized tracking control scheme for nonlinear interconnected systems with uncertainties using sliding mode technique. The system is transformed into a new nonlinear interconnected structure to facilitate analysis and design. A composite sliding surface and decentralized controllers are designed to achieve system state tracking and ensure asymptotic convergence of output tracking errors.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Article
Automation & Control Systems
Zhiru Cao, Yugang Niu, James Lam
Summary: This article addresses the sliding mode control problem for a certain class of Markov jump systems subject to packet dropouts, and proposes a novel measurement model and solution based on Markov chain to improve the reliability and performance of the system.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Ying Zhou, Zhongxing Li, Wenhao Yu, Yi Yu
Summary: This paper introduces a novel interconnected air suspension system and designs a cooperative control between interconnected mode activation and outsourced mode activation to improve ride comfort. The simulation and experimental results demonstrate that the proposed control strategy significantly enhances ride comfort under different conditions.
APPLIED SCIENCES-BASEL
(2022)
Article
Automation & Control Systems
Gafary Mahmoud, Yong Chen, Longjie Zhang, Meng Li
Summary: This paper investigates the issue of nonlinear load frequency control in the interconnected coupling power network and proposes a scheme based on super twisting sliding mode control and proportional integral technique to effectively zero out frequency deviations and preserve battery energy consumption.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Ahmed M. Othman
Summary: This research introduces a proposed technique of adaptive super-twisting method and game-theory algorithm to improve the dynamic stability of UPFC-based tidal energy resources. Through simulations and analysis, it has been confirmed that the technique exhibits excellent performance in enhancing the stability of power systems.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
Article
Computer Science, Information Systems
Tengda Wang, Huanqing Wang, Ning Xu, Liang Zhang, Khalid H. Alharbi
Summary: This paper proposes a decentralized event-triggered control method for partially unknown interconnected nonlinear systems using a sliding-mode surface (SMS) and an identifier-critic neural networks framework. An optimal controller for each subsystem is designed based on an associated cost function and updated in an event-triggered manner, which reduces communication resources. The reinforcement learning algorithm is used to solve the corresponding Hamilton-Jacobi-Bellman equations and obtain the optimal event-based control policies. The identifier-critic network framework eliminates the need for knowledge of system dynamics and the errors caused by approximating actor networks. The proposed control scheme achieves faster control response and ensures bounded signals of the interconnected nonlinear systems.
INFORMATION SCIENCES
(2023)
Article
Computer Science, Information Systems
K. B. Devika, G. Rohith, Shankar C. Subramanian
Summary: This paper investigates the impact of brake fade phenomenon on the string stability of heavy commercial road vehicle platoons. A sliding mode control based string stable controller is designed to compensate for brake fade, along with an algorithm that adaptively estimates mass and gradient values. Experimental results show that the proposed approach ensures string stability for various road conditions and platoon operations.
Article
Automation & Control Systems
Igor Boiko
Summary: The concept of phase deficit for systems with homogeneous higher order sliding mode (HOSM) controllers is discussed in the literature. Necessary conditions for finite-time convergence are derived based on the phase deficit, and several homogeneous control algorithms of different orders are analyzed. It is found that a positive phase deficit indicates finite time convergence, but under certain controller parameters, asymptotic conversion or nonvanishing oscillations may occur. The necessary conditions for finite-time convergence, infinite-time convergence, and finite-frequency oscillations are obtained through the developed approach.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Engineering, Electrical & Electronic
Fan Yang, Xinyi Shao, S. M. Muyeen, Dongdong Li, Shunfu Lin, Chen Fang
Summary: This study introduces a generalized extended state observer and fractional-order integral sliding mode control strategy to optimize the safe operation of the interconnected power system, emphasizing robustness and anti-chattering characteristics. Additionally, ancillary frequency regulation devices such as superconducting magnetic energy storage and wind models are implemented for frequency control in the system.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2021)
Article
Computer Science, Hardware & Architecture
Xinquan Zheng, Xiaoyuan Luo, Jianmei Wang, Jing Yan, Xinping Guan
Summary: This paper investigates the platoon control problem of interconnected vehicular systems and proposes a finite-time adaptive sliding mode control method based on acceleration feedback to achieve platooning. The string stability of the closed-loop platoon system is analyzed. A novel error definition method is proposed to transform the non-zero initial steady-state error into zero initial steady-state error, reducing the large transient response caused by non-zero initial steady-state errors. The proposed control law does not require knowing the disturbance boundary in advance.
COMPUTERS & ELECTRICAL ENGINEERING
(2022)
Article
Engineering, Mechanical
Zhen Zhang, Yinan Guo, Dunwei Gong, Song Zhu
Summary: In this study, a global sliding-mode controller based on a reduced-order proportional-derivative-type extended state observer (GSMC-PDESO) is proposed to improve the tracking performance of a hydraulic roofbolter's displacement system affected by dead-zone nonlinearity and uncertain dynamics. Experimental results validate the effectiveness of the proposed controller and strategies.
NONLINEAR DYNAMICS
(2023)
Article
Energy & Fuels
Senqi Tan, Jue Yang, Xinxin Zhao, Tingting Hai, Wenming Zhang
Article
Engineering, Electrical & Electronic
Senqi Tan, Jue Yang, Xinxin Zhao, Weiwei Yang, Wenhao Yu, Amir Khajepour
Summary: This article proposes a novel integrated dual-motor transmission system and utilizes a dynamic power distribution strategy to enhance economic performance. By coordinating the output torque allocation of the two motors and conducting particle swarm optimization, improvements in energy consumption and real-time performance of the dump truck are achieved.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2021)
Article
Computer Science, Information Systems
Senqi Tan, Yang Wang, Wen Cheng, Tian Luo, Naisi Zhang, Shengfei Li, Bo Pan, Xing Cui
Summary: A cascade direct yaw moment control strategy is proposed to enhance the accuracy and stability of a special purpose autonomous vehicle in unstructured off-road environments. Simulation results show that the proposed control architecture effectively improves path-tracking ability and handling stability.
