A5053393507- Adaptive Control of Nonlinear Systems
- Microstructure and Mechanical Properties of Steels
- High Temperature Alloys and Creep
- Hydrogen embrittlement and corrosion behaviors in metals
- Stability and Control of Uncertain Systems
- Welding Techniques and Residual Stresses
- Adaptive Dynamic Programming Control
- Distributed Control Multi-Agent Systems
- Fatigue and fracture mechanics
- Guidance and Control Systems
- Piezoelectric Actuators and Control
- Fault Detection and Control Systems
- Metal Alloys Wear and Properties
- Neural Networks Stability and Synchronization
- Control and Dynamics of Mobile Robots
- Microstructure and mechanical properties
- Iterative Learning Control Systems
- Inertial Sensor and Navigation
- Advanced Welding Techniques Analysis
- Shape Memory Alloy Transformations
- UAV Applications and Optimization
- Fusion materials and technologies
- Optimization and Search Problems
- High-Temperature Coating Behaviors
- Wheat and Barley Genetics and Pathology
Harbin Institute of Technology
2012-2024
Tongji University
2021-2024
Shanghai Electric (China)
2014-2024
Ministry of Education of the People's Republic of China
2023
Liuzhou General Hospital
2022
Bohai University
2019-2021
Syracuse University
2019
China Agricultural University
2018
Tianjin University of Science and Technology
2015-2017
Heilongjiang Institute of Technology
2016
In this article, the issue of adaptive neural fault-tolerant control (FTC) is addressed for a class uncertain switched nonstrict-feedback nonlinear systems with unmodeled dynamics and unmeasurable states. such system, parts are identified by radial basis function (RBF) networks (NNs). Also, help structural characteristics RBF NNs, violation between nontsrict-feedback form backstepping method tackled. Then, based on small-gain technique, input-to-state practical stability (ISpS) theory,...
This article studies the decentralized event-triggered control problem for a class of constrained nonlinear interconnected systems. By assigning specific cost function each auxiliary subsystem, original is equivalently transformed into finding series optimal policies updating in an aperiodic manner, and these laws together constitute desired controller. It strictly proven that system under consideration stable sense uniformly ultimate boundedness provided by solutions Hamilton-Jacobi-Bellman...
In this paper, we propose an optimal event-triggered tracking control scheme for completely unknown nonlinear systems under the adaptive dynamic programming (ADP) framework. A data-driven model based on recurrent neural networks (RNNs) is first constructed to system uncertainties including drift dynamics and input gain matrix, modeling error caused by NN approximation well eliminated through adding a compensation term in such that state can asymptotically track state. Apart from traditional...
Narrow gap submerged arc welding (NG-SAW) and narrow tungsten inert gas (NG-TIG) with multi-layer multi-pass techniques were used to join the advanced 9Cr CrMoV steels. The relationship between impact toughness microstructure of dissimilar welded joint fabricated by these two different was systematically investigated. By tests, results indicated that average energy specimen NG-TIG (154.0 J) five times as high one (29.2 NG-SAW. Interestingly, an amount fine second phase particles detected on...
Electromagnetic induction heating, which converts electromagnetic energy into thermal via electron-lattice collisions, and heat conduction transfers through lattice vibrations, both have significant impacts on the solid-state precipitation behavior caused by atomic diffusion. This paper proposes a creep method based utilizes turning point of negative to measure isothermal transformation start curve γ′ phase in alloy. The results are compared with expansion experiments under heating...
Distributed machine learning has emerged as a promising data processing technology for next-generation communication systems. It leverages the computational capabilities of local nodes to efficiently handle large datasets, creating highly accurate data-driven models analysis and prediction purposes. However, performance distributed can be significantly hampered by bottlenecks node dropouts. In this article, novel unmanned aerial vehicle (UAV)-enabled hierarchical architecture is proposed...
A finite-time convergent sliding mode control (SMC) scheme is developed to solve the problem of fault-tolerant for a rigid spacecraft attitude stabilization manoeuvre in presence uncertain inertia parameters and external disturbances. new terminal surface first presented. Based on manifold designed, robust controller then derived automatically compensating disturbances, matrix, even time-varying actuator faults. One feature proposed strategy that design does not require fault detection...
The Fe-rich heterogeneous microstructures were observed in the weld metal (WM) of laser welding on dissimilar metals between 9Cr steel and alloy 617, manifesting as vortex-like lamellar-like structures. They displayed a face-centered cubic structure consisted cellular columnar dendrites. was distributed upper side WM exhibited solidification grain boundary. Due to higher liquid temperature insufficient mixing, preferential nucleation during process. On other hand, situated lower had...
In this paper, the precipitation behavior and its effect on resistivity in a new type of nickel–iron-based alloy during short-term aging were investigated. During process, γ′ phase increases average size decreases number, with area fraction fluctuating over time. This fluctuation is caused by mismatch redissolution growth rates phase. As increases, content solute atoms matrix that scatter electrons decreases, lowering alloy. Additionally, continuous M23C6 at grain boundaries causes to...
The precipitation behavior of a novel Ni-Fe-based superalloy developed for advanced ultra-supercritical (A-USC) coal-fired power plant applications during high-temperature aging treatment was investigated. results showed that the major precipitates in alloy were randomly distributed MC carbides, M23C6 carbides at grain boundaries, and γ′-Ni3 (Al, Ti) phase interiors after aging. remained relatively stable both short-term long-term quickly precipitated exhibited discrete distribution...
Abstract Background Atherosclerosis is the pathological basis of cardio-cerebrovascular diseases. Oxidized low-density lipoprotein (ox-LDL) an important risk factor for atherosclerosis. Ox-LDL leads to endothelial cell (EC) damage and dysfunction through various processes promotes occurrence deterioration High mobility group box-1 (HMGB1) a protein associated with cellular damage. In present study, effect HMGB1 on ox-LDL-induced EC was determined underlying mechanism explored. Materials...