Article
Computer Science, Artificial Intelligence
Jiapeng Liu, Qing-Guo Wang, Jinpeng Yu
Summary: This article proposes a modified command filter backstepping tracking control strategy based on the convex optimization method and the adaptive fuzzy logic system (FLS) control technique for a class of uncertain nonlinear systems with input saturation. The effect of complex uncertainties is eliminated by introducing n command filters and a single FLS. The update laws of FLS weights are designed using the convex optimization technique, and a new piecewise continuous function is employed to handle the input saturation problem. The effectiveness of the controller is demonstrated through simulation and experimental results.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2023)
Article
Computer Science, Artificial Intelligence
Bin Xin, Shuai Cheng, Qing Wang, Jie Chen, Fang Deng
Summary: This article focuses on the fixed-time consensus tracking control of nonlinear multiagent systems (NNMASs) suffering from nonaffine faults. It proposes a control scheme and a compensation mechanism to address the complexity explosion issue and filtering errors. Simulation results demonstrate the effectiveness of the proposed method.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2023)
Article
Automation & Control Systems
Jianwei Xia, Jing Zhang, June Feng, Zhen Wang, Guangming Zhuang
Summary: In this paper, a command filter-based adaptive tracking controller is proposed to deal with a class of nonlinear systems with unknown control directions. The design process involves the use of a fuzzy logic system and Nussbaum function to handle nonlinear functions and compensate for the influence of unknown directions. The effectiveness of the control approach is demonstrated through a simulation example.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2021)
Article
Engineering, Civil
Wenjin Wang, Tao Wen, Xiao He, Guohua Xu
Summary: This paper investigates the problem of path following with prescribed performance for autonomous underwater vehicles subjects to unknown actuator dead-zone nonlinearity. An adaptive command filtered backstepping method with actuator dead-zone compensation is proposed, which is theoretically based on the command filtered backstepping technique for handling the complexity explosion problem attribute to the repeating derivations. The effectiveness of the proposed method is demonstrated through numerical simulations.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2023)
Article
Automation & Control Systems
Kangkang Sun, Runsheng Guo, Jianbin Qiu
Summary: This article investigates fuzzy adaptive switching control for stochastic systems, modeling with piecewise function and tangent function, approximating unknown functions with fuzzy-logic systems. A fuzzy adaptive switching control scheme based on stochastic stability theory and Lyapunov function is proposed to ensure system signal boundedness. Simulation studies demonstrate the effectiveness of the presented control scheme for practical systems.
IEEE TRANSACTIONS ON CYBERNETICS
(2022)
Article
Automation & Control Systems
Wei Sun, Shun-Feng Su, Jianwei Xia, Guangming Zhuang
Summary: A novel adaptive fuzzy prescribed performance tracking control method is proposed in this article, effectively addressing the control problem of strict-feedback stochastic uncertain nonlinear systems. The effectiveness of the method is verified through simulation examples.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2021)
Article
Automation & Control Systems
Shijia Kang, Peter Xiaoping Liu, Huanqing Wang
Summary: In this article, a solution is proposed for the problem of decentralized fuzzy adaptive control of a class of stochastic interconnected nonlinear large-scale systems including saturation and unknown disturbance. Fuzzy Logic Systems (FLSs) are used for estimating packaged nonlinear uncertainties. The command filter technique is introduced to handle the complexity explosion obstacle associated with backstepping procedures, and an error compensation mechanism is constructed to alleviate the effect of errors generated by command filters. An improved adaptive fuzzy decentralized controller is developed, which minimizes calculation time by eliminating the need for repeated differentiation of virtual control laws. The control scheme ensures semi-global boundedness of all signals in the closed-loop system and achieves small neighborhood output tracking errors around the origin. Numerical and practical examples are provided to illustrate the efficiency and effectiveness of the theoretical result.
Article
Automation & Control Systems
Wangyao Xu, Ze Li, Guozeng Cui, Chengxi Wang, Fuyuan Hu
Summary: An adaptive fuzzy finite time command filter control scheme is proposed for a single machine infinite power system with static VAR compensator (SVC). The controller design takes unknown external interference into account and formulates the incomplete single machine infinite SVC power system in terms of fuzzy logic system. The devised control scheme ensures the convergence of rotor power angle and stability of all variables in the control system. Simulation results demonstrate the effectiveness of the proposed control scheme.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2021)
Article
Automation & Control Systems
Shijia Kang, Peter Xiaoping Liu, Huanqing Wang
Summary: This article introduces a finite-time adaptive fuzzy control method based on command filtering for stochastic nonlinear systems subject to input quantization. It decomposes quantized input into two bounded nonlinear functions to solve the chattering problem. By using an adaptive fuzzy controller, the computational complexity in traditional backstepping design is eliminated, and the system performance can be achieved within finite time.
INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING
(2022)
Article
Computer Science, Artificial Intelligence
Libin Wang, Huanqing Wang, Peter Xiaoping Liu, Song Ling, Siwen Liu
Summary: This article presents a fuzzy finite-time command filtering output feedback control method for a class of nonlinear systems. The method solves the computational complexity problem and ensures the finite-time boundedness of signals and convergence of tracking error by introducing fuzzy logic system and fuzzy state observer.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2022)
Article
Automation & Control Systems
Tiechao Wang, Xuhang Zhang, Yongming Li
Summary: This study investigates the adaptive interval type-2 (IT2) fuzzy output feedback control problem for a single-phase photovoltaic grid-connected power system. By using IT2 fuzzy logic systems to approximate uncertain nonlinear dynamics and designing an IT2 fuzzy state observer for estimating unavailable states, a control scheme is proposed. The scheme ensures constraint conditions of pulse width modulation and proves the stability of the closed-loop photovoltaic system. Simulation and comparison results demonstrate the effectiveness of the proposed control scheme.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2021)
Article
Computer Science, Artificial Intelligence
Lili Zhang, Wei-Wei Che, Chao Deng, Zheng-Guang Wu
Summary: This article discusses the prescribed performance control problem for multiagent systems involving the state triggering and the controller output triggering simultaneously. A new barrier Lyapunov function is developed with considering the characteristics of multiagent systems, and a fuzzy adaptive event-triggered control protocol is proposed by the backstepping procedure. It guarantees that the consensus tracking error converges to a predefined region of the origin in a preset finite time while ensuring that all other closed-loop signals remain bounded without the Zeno behavior.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2022)
Article
Computer Science, Information Systems
Guangming Xue, Funing Lin, Shenggang Li, Heng Liu
Summary: This paper investigates a class of unknown fractional-order nonlinear systems suffering from actuator faults and proposes an adaptive finite-time sliding mode control approach based on approximation principle of fuzzy logic system and backstepping layout. A fractional-order command filter is introduced to overcome the computational complexity of standard backstepping control, and fractional-order sliding mode surfaces are constructed to improve control performance.
INFORMATION SCIENCES
(2022)
Article
Computer Science, Artificial Intelligence
Yanxian Chen, Zhi Liu, C. L. Philip Chen, Yun Zhang
Summary: This article addresses the problem of fuzzy tracking control in the presence of unknown input backlash, nonconstant control gain, and asymmetric full-state constraints in switched systems. A novel mode-dependent integral barrier Lyapunov function (MIBLF) is proposed to handle the conservative feasibility conditions and ensure all subsystems share a common controller. With the utilization of fuzzy logic systems and a parameterized smooth backlash inverse (PSBI), a novel MIBLF-based adaptive fuzzy controller is presented to overcome the challenges caused by unknown input backlash nonlinearities.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2022)
Article
Automation & Control Systems
Shijia Kang, Peter Xiaoping Liu, Huanqing Wang
Summary: In this article, a finite-time adaptive fuzzy output-feedback control strategy is proposed for MIMO nonlinear systems with multiple actuator constraints and unmeasured states. Fuzzy logic systems and a fuzzy adaptive state observer are used for uncertainty estimation and state estimation, respectively. The 'explosion of complexity' problem is tackled by command filter technology, and the corresponding error compensation mechanism is utilized. The presented approach is shown to be practical through numerical and practical examples.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2023)
Article
Computer Science, Information Systems
Yu Tang, Zhencai Zhu, Gang Shen, Wenjuan Zhang
Article
Engineering, Mechanical
Yu Tang, Zhencai Zhu, Gang Shen, Guangchao Rui, Dong Cheng, Xiang Li, Yunjie Sa
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2019)
Article
Automation & Control Systems
Hui Xie, Yu Tang, Gang Shen, Xiang Li, Deen Bai, Yunjie Sa
Summary: This article presents a novel command filtered adaptive backstepping controller to improve the motion tracking accuracy of hydraulic systems. By establishing the system's nonlinear model, designing an extended state observer and command filter, ensuring theoretical stability through Lyapunov analysis, and demonstrating the effectiveness of the controller through comparative experimental results, the proposed controller shows superiority in handling system nonlinearity and uncertainty.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING
(2022)
Article
Automation & Control Systems
Yunjie Sa, Zhencai Zhu, Yu Tang, Xiang Li, Gang Shen
Summary: An adaptive dynamic surface control method with nonlinear disturbance observers is proposed for accurate position tracking of an electro-hydraulic servo system with unknown time-varying disturbances. The approach ameliorates complexity differentiation explosion of traditional backstepping methods and effectively suppresses degradation caused by time-varying disturbances. The closed-loop stability is guaranteed by rigorous Lyapunov analysis, and comparative experimental results validate the feasibility and superiority of the proposed controller.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING
(2022)
Article
Automation & Control Systems
Xiang Li, Zhen-Cai Zhu, Gang Shen, Yu Tang
Summary: This article proposes a novel hybrid control method for actively controlling the tension of the two steel ropes in a double-rope winding hoist. The method takes into account the wireless transmission delay of the tension signal, nonlinear uncertainties, and external disturbance, and designs a signal transmission delay compensator and a hybrid controller. The effectiveness of the proposed method is verified through theoretical analysis, simulation, and experiments, showing good robust performance and improved response rate in the closed-loop system.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING
(2022)
Article
Automation & Control Systems
Kaiyu Dai, Zhencai Zhu, Gang Shen, Xiang Li, Yu Tang, Wei Wang
Summary: In this article, an adaptive tension control scheme combining a neural command filtering backstepping algorithm and online identification is proposed based on a novel tension model. The proposed tension model effectively reflects the chain transmission characteristics and avoids the full measurement of each chain ring. The controller achieves tension control in the fully mechanized mining face and guarantees stability.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2022)
Article
Engineering, Mechanical
Hui Xie, Yu Tang, Gang Shen, Xiang Li
Summary: In this paper, a neural adaptive braking torque controller with disturbance compensation is proposed to improve the braking performance of single rope winding hoisting systems. The controller effectively addresses the issues of dynamic nonlinearity, time-varying disturbances, mechanical dynamic uncertainties, and measurement noise. Comparative experiments demonstrate the advantages of the proposed controller.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Automation & Control Systems
Kaiyu Dai, Zhencai Zhu, Gang Shen, Xiang Li, Yu Tang, Wei Wang, Qing-Guo Wang
Summary: In armored face conveyors, the safety of the interaction between the controlled system and complex environment is a significant challenge when transitioning from manual to automated chain tensioning. To address this challenge, a switched safe tracking control method is proposed, which incorporates a hybrid switched tension/position control with hysteresis autonomous switching strategy. This control method allows the system to autonomously follow a predefined safe trajectory when the position exceeds the safe bound, preventing collision and chain jumping. Comparative experiments validate the effectiveness of the proposed control scheme in achieving excellent tension tracking performance and ensuring the compliance with kinematic constraints in various situations.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Engineering, Electrical & Electronic
Yunjie Sa, Zhencai Zhu, Gang Shen, Xiang Li, Yu Tang, Pengpeng Chen, Qing-Guo Wang
Summary: This article proposes a nonline-of-sight (NLOS) mitigation algorithm for mine-used underground monorail cranes (MUMCs) by utilizing distance geometric constrain (DGC). The algorithm corrects NLOS errors through a correction method based on the DGC and Cayley-Menger determinant (DGC-CMD), and then employs a robust extended Kalman filter (REKF) to obtain the precise location of the MUMC. Experimental results show that the proposed algorithm outperforms other methods with a maximum localization error of 0.4098 m, an average localization error of 0.2372 m, and a standard deviation of 0.0739 m.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Computer Science, Information Systems
Xiang Li, Zhencai Zhu, Dong Cheng, Gang Shen, Yu Tang
Article
Computer Science, Information Systems
Lei Cheng, Zhen-Cai Zhu, Gang Shen, Shujing Wang, Xiang Li, Yu Tang
Article
Computer Science, Information Systems
Wanshun Zang, Gang Shen, Guangchao Rui, Xiang Li, Ge Li, Yu Tang
Article
Computer Science, Information Systems
Gang Shen, Ge Li, Wanshun Zang, Xiang Li, Yu Tang