Article
Engineering, Aerospace
Erkang Chen, Wuxing Jing, Changsheng Gao
Summary: This paper proposes a novel control scheme that achieves precise attitude control and active flexible vibration suppression by utilizing techniques such as moving horizon estimator, sliding mode disturbance observer, gain adaptation law, and baseline hierarchical sliding mode controller. The effectiveness of the proposed control scheme against aeroservoelastic effect, uncertainty, and external disturbance is verified through numerical simulations, proving the stability of the system with the Lyapunov theory.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING
(2021)
Article
Engineering, Aerospace
Hao Zhang, Peng Wang, Guojian Tang, Weimin Bao
Summary: This research focuses on the attitude-tracking problem of hypersonic morphing vehicles in the presence of multi-source uncertainties. It proposes the sliding mode control technique and a novel fixed-time disturbance observer to achieve fast, robust, and adaptive flight control.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Yinkai Feng, Yun Long, Chong Yao, Enzhe Song
Summary: An adaptive second-order fixed-time sliding mode (ASOFxTSM) controller is proposed in this study to enhance the precision and speed of control for electronic throttle valves (ETVs) in the presence of disturbance and parameter uncertainties. The controller utilizes disturbance observer compensation techniques and an innovative fixed-time sliding mode observer to estimate and compensate for lumped disturbances. The proposed method outperforms conventional fixed-time sliding mode and super-twisting controllers in terms of chattering suppression, rapid dynamic response, and disturbance rejection capability.
Article
Engineering, Electrical & Electronic
Jianshan Zhou, Daxin Tian, Zhengguo Sheng, Xuting Duan, Guixian Qu, Dongpu Cao, Xuemin Shen
Summary: A novel decentralized robust control approach is proposed in this paper to address the external disturbances in vehicle platooning. By combining a super-twisting second-order sliding mode strategy and a disturbance observer, a super-twisting SOSMDO platoon controller is designed, and the theoretical analysis proves its convergence and stability.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Automation & Control Systems
Guo Jianguo, Yang Shengjiang
Summary: This paper proposes a fixed-time sliding mode control method for second-order systems with mismatched uncertainties, which introduces a new sliding mode to eliminate the influence of mismatched uncertainties, and ultimately compares its performance with numerical simulation results.
TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL
(2021)
Article
Engineering, Aerospace
Haolan Chen, Peng Wang, Guojian Tang
Summary: This work focuses on attitude control problem for hypersonic morphing vehicles (HMVs) with uncertainties. A disturbance observer with fuzzy logic system (FLS) is proposed to enhance the robustness. The control system degenerates into an autonomous system, and the closed-loop fixed-time stability is guaranteed via Lyapunov synthesis and homogeneity theory.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2023)
Article
Computer Science, Information Systems
Changhua Hu, Meijie Liu, Hongzeng Li, Xiaoxiang Hu
Summary: This paper applies a sliding mode observer-based fault detection scheme to improve the safety and reliability of hypersonic flight vehicles, successfully detecting and handling actuator faults including stuck faults and PLOE faults. Results show that stuck faults and high proportion PLOE faults can be timely and accurately detected, while detection of small proportion PLOE faults faces some difficulties.
Article
Acoustics
Umair Javaid, Ziyang Zhen, Sami Shahid, Dauda Sh Ibrahim, Salman Ijaz
Summary: This paper investigates the attitude tracking control problem of flexible spacecraft under parameter uncertainties, time-dependent external disturbances, actuator input nonlinearity, and input actuator misalignment. The proposed strategy addresses the input actuator misalignment and dead-zone issues, and a new second-order sliding mode observer (SoSMO) using an extended state approach is developed to estimate unwanted system perturbations. A distinct SoSMO-based integral-type sliding mode control (ISMC) structure is designed to ensure the asymptotic stability of the closed-loop system. Comparative numerical simulations are performed to demonstrate the effectiveness of the proposed controller under various uncertainties and disturbances.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Engineering, Mechanical
Zhenxing Sun, Jiaxin Qiu, Jinghao Zhu, Shenghui Li
Summary: In this study, a composite position control method based on second-order sliding mode control is proposed to address the problem of large trajectory tracking error in flexible lower limb exoskeleton robots under external disturbance and parameters uncertainty. The stability of the proposed method is verified using the Lyapunov function, and experimental results demonstrate its superiority over classic PD control and sliding mode control in terms of trajectory tracking effect and resilience.
NONLINEAR DYNAMICS
(2023)
Article
Computer Science, Artificial Intelligence
Jixing Lv, Changhong Wang, Yonggui Kao
Summary: This paper focuses on the problem of adaptive fixed-time quantized fault-tolerant attitude tracking for hypersonic reentry vehicles (HRV). The paper proposes a control scheme that can handle nonlinearities, system uncertainties, and actuator faults of the HRV. The proposed scheme includes a disturbance observer and a sliding mode controller, which can achieve fixed-time convergence and reduce communication load. The effectiveness of the proposed scheme is demonstrated through numerical simulations.
Article
Engineering, Marine
Yushan Sun, Puxin Chai, Guocheng Zhang, Tian Zhou, Haotian Zheng
Summary: This paper proposes a sliding mode control method with dual-observer estimation to address the AUV 3D motion control problem in the presence of thruster misalignment uncertainty and thrust loss uncertainty. By considering the force and moment deviation as disturbances and introducing disturbance observers, the designed controller ensures better motion control for the AUV despite thruster misalignment and thrust loss.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Mathematics
Daiming Liu, Changwan Min, Jiashan Cui, Fei Li, Dongzhu Feng, Pei Dai
Summary: This paper investigates the attitude control problem for underactuated body-flap hypersonic vehicles (BFHSVs) with mixed disturbances. An improved finite-time super twisting disturbance observer (STDO) is designed to achieve finite-time convergence of estimate error and smoother inputs. A parametric command method is introduced to enhance the dynamic response of the closed-loop system. The overall stability of the closed-loop system is demonstrated by applying the Lyapunov stability theory.
Article
Engineering, Ocean
Jiaqi Zheng, Lei Song, Lingya Liu, Wenbin Yu, Yiyin Wang, Cailian Chen
Summary: In this paper, a fixed-time sliding mode controller (FSMC) with disturbance observer (DO) is proposed for trajectory tracking control of autonomous underwater vehicles (AUVs under time-varying external disturbances. The FSMC-DO offers faster convergence rate, higher tracking accuracy, and robustness compared to conventional FSMC and finite time controllers, as demonstrated by simulation results.
APPLIED OCEAN RESEARCH
(2021)
Article
Automation & Control Systems
Daikun Chao, Ruiyun Qi, Bin Jiang
Summary: This paper presents a novel fast attitude adaptive fault-tolerant control scheme based on adaptive neural network and command filter for hypersonic reentry vehicles with complex uncertainties. The scheme improves control performance by using command filter and neural network to reconstruct system nonlinearities related to complex uncertainties, resulting in reduced computational complexity and improved control efficiency.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Article
Automation & Control Systems
B. Adhira, G. Nagamani, G. Soundararajan
Summary: This paper addresses the problem of exponentially extended dissipative criteria for a class of delayed discrete-time neural networks (DNNs) with resilient observer-based controller design. By designing a memoryless full-order Luenberger state observer and resilient control, the exponentially extended dissipative criterion is obtained and the observer and resilient control gain matrices are determined by solving a set of linear matrix inequalities (LMIs).
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
