A5103042405- Speech and Audio Processing
- Sensorless Control of Electric Motors
- Multilevel Inverters and Converters
- Speech Recognition and Synthesis
- Adaptive Control of Nonlinear Systems
- Music and Audio Processing
- Advanced Steganography and Watermarking Techniques
- Iterative Learning Control Systems
- Advanced DC-DC Converters
- Industrial Technology and Control Systems
- Advanced Algorithms and Applications
- Digital Media Forensic Detection
- Advanced Sensor and Control Systems
- Obstructive Sleep Apnea Research
- Chaos-based Image/Signal Encryption
- Electric Motor Design and Analysis
- Hearing Loss and Rehabilitation
- Advanced Computational Techniques and Applications
- Advanced Image Fusion Techniques
- Image and Video Stabilization
- Microgrid Control and Optimization
- Blind Source Separation Techniques
- Distributed Control Multi-Agent Systems
- Power Systems and Renewable Energy
- Neural Networks and Applications
Liaoning Technical University
2008-2025
South China Agricultural University
2023-2025
Air Force Medical University
2024
Xijing Hospital
2024
University of Jinan
2023
Shanghai University
2011-2022
Ohio University
2018
University of Kent
2018
Huazhong University of Science and Technology
2015
Xian Center for Disease Control and Prevention
2014
To solve the problem that conventional vector control system of permanent magnet synchronous motor is susceptible to parameters and load disturbances, a sliding mode predictive current strategy with cascaded variable rate speed controller based on extended state observer (ESO) proposed, which improves dynamic static performance system. First, designed novel exponential reaching law, ESO used estimate compensate for parameter mismatch disturbance, system's rapidity robustness while reducing...
Automatic emotion recognition based on electroencephalo-graphic (EEG) signals has received increasing attention in recent years. The Deep Residual Networks (ResNets) can solve vanishing gradient problem and exploding well computer vision learn more profound semantic information. And for traditional methods, frequency features often play important role signal processing area. Thus, this paper, we use the pre-trained ResNets to extract deep information linear-frequency cepstral coefficients...
In this paper, a passive lossless snubber circuit for pulse width modulation (PWM) inverters is proposed to achieve soft-switching purpose without extra switch or additional control circuitry. This employs an inductor/capacitor structure each switching device in inverter zero-current turn ON and zero-voltage OFF. Furthermore, inductors coupled closely on single core are used losslessly recover energy the input snubber. addition, freewheeling of output phase current can be realized via...
OPINION article Front. Digit. Health, 26 June 2020 | https://doi.org/10.3389/fdgth.2020.00005
In order to improve the robustness and speed tracking performance of a permanent magnetic synchronous motor (PMSM) system, under framework PMSM vector control, nonlinear control method based on improved sliding mode (SMC) disturbance observer is proposed in this paper. First, novel fast reaching law designed make system trajectory reach surface within finite time alleviate chattering phenomenon. Second, integral terminal by introducing sign fractional error integration, which achieves...
This article studies the fuzzy event-triggered synchronization control problem for nonlinear multiagent systems (NMASs) under denial-of-service (DoS) attacks and unmeasured states. First, to estimate leader's system matrix state DoS attacks, a novel distributed secure estimator is constructed. Second, logic (FLSs) are applied approximate unknown dynamics, observer proposed states of NMASs. To save data transmission communication resources, an mechanism (ETM) employed controller design. Then,...
To address the susceptibility of conventional vector control systems for permanent magnet synchronous motors (PMSMs) to motor parameter variations and load disturbances, a novel method combining an improved Grasshopper Optimization Algorithm (GOA) with variable universe fuzzy Proportional-Integral (PI) controller is proposed, building upon standard PI control. First, diversity population global exploration capability algorithm are enhanced through integration Cauchy mutation strategy uniform...
Porcine reproductive and respiratory syndrome virus (PRRSV) is a persistent pathogen that causes significant economic losses to the global swine industry. Commercial vaccines provide only partial protection, no effective therapeutic treatments are currently available. In this study, we demonstrate hesperetin (Hst), flavonoid glycoside derived from orange tangerine peels, inhibits PRRSV replication in dose-dependent manner Marc-145 PAMs cells. Transcriptome analysis further reveals anti-PRRSV...
<title>Abstract</title> <bold>Consensus control of multi-agent systems offers scalability and robustness in group tasks. To improve the performance multiple permanent magnet synchronous motors (multi-PMSMs) speed coordination, this paper, we propose a fixed-time leader-following consensus for multi-PMSMs based on consensus. First, concept is introduced system modeled as first-order subject to perturbations. Next, protocol designed an undirected graph, construct extended state observer (ESO)...
The surface permanent magnet synchronous motor (SPMSM) speed regulation system is easily affected by the inner parameter perturbation and external load disturbance at run time. To solve this problem, H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞</sub> robust control strategy proposed in paper. First, given systematic uncertainties, current controller based on Hamilton-Jacobi Inequality designed to ensure robustness of under SPMSM nominal...
Multilayer piezoelectric ceramic actuator (MLCA) has been widely employed in actuators due to the large cumulative displacement under low driving voltage. In this work, MLCA devices consisting of a lead-free MnCO<sub>3</sub> and CuO doped 0.96(K<sub>0.48</sub>Na<sub>0.52</sub>)(Nb<sub>0.96</sub>Ta<sub>0.04</sub>)O<sub>3</sub>–0.04CaZrO<sub>3</sub> (KNN) base Ni metal inner electrode were well co-fired by two-step sintering process reducing atmosphere. The layer/electrode interface is...
An extended nonlinear disturbance observer (ENDOB)-based fuzzy sliding mode control approach is proposed for single-input and single-output systems with matched mismatched uncertainties/disturbances, it to the general <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$n$ </tex-math></inline-formula> th order systems. By integrating estimation its derivative into surface, an ENDOB-based SMC method developed...
This paper proposes a novel sliding mode control (SMC) approach for general nth order systems with matched and mismatched uncertainties disturbances based on nonlinear disturbance observer (NDOB). By designing manifold integrated estimation technique, NDOB-based SMC method is designed these systems. As compared the nominal method, proposed obtains better rejection ability in presence of disturbances, it can ensure satisfactory system performance reduce chattering case reducing switching...