A5100741501- Adaptive Control of Nonlinear Systems
- Distributed Control Multi-Agent Systems
- Stability and Control of Uncertain Systems
- Fault Detection and Control Systems
- Control Systems and Identification
- Space Satellite Systems and Control
- Advanced Algorithms and Applications
- UAV Applications and Optimization
- Neural Networks Stability and Synchronization
- Iterative Learning Control Systems
- Control and Dynamics of Mobile Robots
- Embedded Systems and FPGA Design
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Sensor and Control Systems
- Industrial Technology and Control Systems
- Silicon Carbide Semiconductor Technologies
- Pulsed Power Technology Applications
- Stability and Controllability of Differential Equations
- Wireless Sensor Networks and IoT
- Astro and Planetary Science
- Adaptive Dynamic Programming Control
- Advanced machining processes and optimization
- Advanced Surface Polishing Techniques
- Magnetic Bearings and Levitation Dynamics
- Advanced Statistical Process Monitoring
Xidian University
2024-2025
Hong Kong Metropolitan University
2023
Nanjing Tech University
2017-2022
Harbin Institute of Technology
2013-2016
Nanjing University of Aeronautics and Astronautics
2016
Xiamen University of Technology
2009
Wuhan University of Technology
2008
Zhejiang University of Technology
2003-2004
Zhejiang University
2003-2004
This paper is concerned with the fault detection problem for underactuated manipulators based on Markovian jump model. The purpose to design a filter such that error system stochastically stable and prescribed probability constraint performance can be guaranteed. existence conditions are proposed through stochastic analysis technique, new algorithm employed desired gains. In addition, cone complementarity linearization procedure cast into sequential minimization problem, which solved...
To synchronize the attitude of a spacecraft formation flying system, three novel autonomous control schemes are proposed to deal with issue in this paper. The first one is an ideal coordinated controller, which applied address case certain models and no disturbance. second robust adaptive aims tackle external disturbances model uncertainties. last filtered used overcome input constraint, uncertainties, disturbances. above controllers do not need any tracking signal only require angular...
The lifetime of an opposed-contact vanadium-compensation semi-insulating 4H-silicon carbide (VCSI 4H-SiC) photoconductive semiconductor switch (PCSS) was investigated. experimental setup involved a laser wavelength 532 nm, bias voltage 19 kV, and maximum photocurrent 200 A. After 678 high power switching cycles, the 4H-SiC PCSS fragmented along two crystal planes. simulation electric fields near electrodes is on order theoretical critical breakdown field strength SiC. Due to distribution...
This paper studies the attitude synchronization tracking control of spacecraft formation flying with a directed communication topology and presents three different controllers. By introducing novel error variable associated rotation matrix, decentralized controller, which could obtain almost global asymptotical stability closed-loop system, is developed. Then, considering model uncertainties unknown external disturbances, we propose robust adaptive controller by designing laws to estimate...
The distributed adaptive tracking control schemes are addressed to deal with the formation problem of multiple unmanned aerial vehicles subject input saturation, actuator fault, and external disturbance. First, a novel backstepping approach associated command filter is presented settle model uncertainty saturation problems. Second, robust fault-tolerant controller introduced tackle case disturbance, by estimating upper bounds faults disturbances. In addition, proposed controllers enable...
Abstract In this article, the distributed tracking control problem is studied for formation flight systems of unmanned aerial vehicles (UAVs) in presence input constraints and actuator faults. Different from traditional approximation technique, such as radial basis function neural networks fuzzy logic systems, novel broad learning system technique introduced study to identify unknown lumped disturbances including external disturbances, additive Combining dynamic surface with fractional order...
This study investigated the failure mechanism of a series-connected structured photoconductive semiconductor switches (PCSSs) made vanadium-doped 4H-SiC. For long time, SiC PCSSs have face reliability issues in high-voltage and high-repetition-frequency environments. Degradation breakdown mechanisms were analyzed using combination scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), current deep-level transient (I-DLTS). The vertical 4H-SiC PCSS structure failed after...
The novel backstepping control schemes are proposed to deal with the formation problem of multiple unmanned aerial vehicles (UAVs) input saturation constraint and model uncertainty. trajectory tracking error UAVs is established. Then standard ideal controller, which applied address case certain no constraint, presented. After that, an adaptive controller associated designed command filter developed overcome controllers above enable asymptotical Lyapunov stability closed-loop system....
This study is concerned with the generalised ℋ 2 fault detection problem for a class of discrete‐time switched systems repeated scalar non‐linearities. To reduce overdesign quadratic framework, this proposes switching‐sequence‐dependent Lyapunov function approach to filter design procedure. Sufficient conditions are obtained existence admissible filter. Since these involve matrix equalities, cone complementarity linearisation procedure employed cast non‐convex feasibility into sequential...
Summary In this study, a novel integrated fault tolerant control (FTC) strategy is proposed for rigid satellite attitude systems under the case of external disturbance, Lipschitz nonlinearity, and sensor faults. Different from traditional adaptive estimation method, an augmented observer designed considered faulty system, which could be used estimating both system state fault. A virtual firstly introduced, then, real derived as result unmeasurable information to design observer. On basis,...
In this paper, an adaptive fault-tolerant control (FTC) strategy is proposed for a class of nonlinear systems in the presence actuator fault, saturation, and unknown external disturbance. The mathematical model second-order system with fault first given, estimation observer designed to estimate occurred time-varying fault. On basis, FTC using both nonsingular fast terminal sliding mode (NFTSM) radial basis function neural networks (RBFNNs) techniques compensate negative effects caused by...
The model-free PID control method with fuzzy neuron gain scheduling is proposed for turning processes in this paper. In order to enhance the system stability and adaptability plants nonlinearities uncertainties, controller designed keep cutting force be constant by changing on-line when a tool cuts at various depth or spindle operates different speeds. system, used process, applied tune gain, scheme set up change gain. With two examples of processes, experiments using are made. simulation...
In this paper, the problem of ℋ<inf>∞</inf> control for electromagnetic suspension (EMS) systems is addressed, and cases both finite entire frequency are discussed. Firstly a linear state-space model applied to approximated complex EMS system, then performance index adopted measure ride comfort in circumstance more general exogenous disturbances. By using generalized Kalman-Yakubovich-Popov (KYP) lemma, norm extended case. Consequently, concerned range, system can be further...
A model-free control method for nonlinear plants is proposed. According to the neuron model and learning strategy in Wang et al. (1991), neural network structured algorithm also presented. Based on network, controller designed. In an example of a pH process, simulation results show that proposed can plant efficiently.
This paper gives an overview of the architecture telecontrol system based on GPRS. The objectives this are two fold. One is to present design and implement data center GPRS DTU. other investigate its performance. According features DTU, provides reliable communication between members a group by implementing in client/server model. With use center, it practical significance multiple master stations receive from all slave simultaneously control parallel. parameters include real-time control,...
We deal with the design problem of minimum entropy ℋ ∞ filter in terms linear matrix inequality (LMI) approach for continuous-time systems a state-space model subject to parameter uncertainty that belongs given convex bounded polyhedral domain. Given stable uncertain system, our attention is focused on full-order and reduced-order robust filters, which guarantee filtering error system be asymptotically are required minimize (at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...
This work studies the optimal ℓ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> -ℓ xmlns:xlink="http://www.w3.org/1999/xlink">∞</inf> filter design problem for discrete-time Markovian jump repeated scalar nonlinear systems. The focus is full- and reduced-order filters which guarantee filtering error system to be stochastically stable with a prescribed weighted performance. Firstly, both mode dependent Lyapunov function approach positive...