A5071426400- Muscle activation and electromyography studies
- Semiconductor Quantum Structures and Devices
- Speech and Audio Processing
- Astro and Planetary Science
- Structural Load-Bearing Analysis
- Space Satellite Systems and Control
- Spacecraft Dynamics and Control
- Welding Techniques and Residual Stresses
- Dust and Plasma Wave Phenomena
- Wave and Wind Energy Systems
- GaN-based semiconductor devices and materials
- Ionosphere and magnetosphere dynamics
- EEG and Brain-Computer Interfaces
- Structural Engineering and Vibration Analysis
- Hydraulic and Pneumatic Systems
- Vehicle Dynamics and Control Systems
- Advanced Algorithms and Applications
- Advanced machining processes and optimization
- Microwave Engineering and Waveguides
- Quantum Information and Cryptography
- Advanced Semiconductor Detectors and Materials
- Advanced Adaptive Filtering Techniques
- Quantum Mechanics and Applications
- Quantum Computing Algorithms and Architecture
- Metal and Thin Film Mechanics
Fujian University of Technology
2024
Beijing Microelectronics Technology Institute
2024
University of Science and Technology of China
2000-2022
Chinese Academy of Sciences
2007-2022
Hefei Institutes of Physical Science
2021-2022
Institute of Intelligent Machines
2011-2022
Chongqing Jiaotong University
2019-2021
Harbin Institute of Technology
2011-2021
University Town of Shenzhen
2021
Shenzhen University
2021
The paper proposes a pitch detection algorithm based on the short-time average magnitude difference function (AMDF) and short-term autocorrelation (ACF). At first, AMDF values are computed by for frame of speech signal. And then ACF values. In order to decreases computational expense complexity, signal transformed into one bit signals. method can also decrease effects amplitude formants detection. period is calculated multiplication operation signals replaced simple addition operation....
The aspect ratio of submerged floating tunnel (SFT), i.e. the length to diameter, is usually as large 102 103, which means behavior SFT would like a slender cylinder restrained by tethers. Although placed under water surface at certain depth, wave has important influence on its dynamic response due slenderness. This paper performs analyses fluid-structure interaction in field. Potential fluid theory adopted describe Boundary element method used solve between and wave. Wave potential divided...
The brushless DC motor (BLDCM) will be suffered the impact of chaos at certain conditions. Therefore, This paper proposes a nonlinear state control method to suppress and emergence chaotic motion based on Lyapunov stability theory. Firstly, We analyze dynamic characteristics equation BLDCM system, prove that it appear phenomenon some parameters. Finally, feedback controller is designed theory, proved can make system asymptotically stable equilibrium point. And further, simulation results are...
Localized nonlinear dust kinetic Alfven waves are investigated. It is found that finite density dips and humps can coexist. The cusped narrower than the dips.
We have used proton-implantation-induced intermixing and a passivation effect to enhance the light-emission efficiency in multilayer InAs/GaAs quantum dots (QDs). Photoluminescence (PL) spectroscopy is study both effects. Besides blueshift of luminescence peak due intermixing-induced energy band variation, six times higher PL intensity increase observed, relative that as-grown QDs, with proton implantation dose 5×1013 cm−2 followed by rapid thermal annealing at 700 °C. These effects are...
Gas tungsten arc welding (GTAW) is the primary process for precision joining of metals due to its capability accurate control heat input. As a close relative and modification GTAW, plasma (PAW) has higher energy density can penetrate thicker workpieces while maintaining desired In order produce quality welds consistently using PAW, in addition input, sensing weld pool surface are also critical. It been found that non-transferred arc, absence transferred or main welding, establish charge...
A study of the artificial neural network representation quantum many-body states is presented. The locality and entanglement properties for shallow deep networks are investigated in detail. By introducing notion local quasi-product states, which locally connected feed-forward restricted Boltzmann machine special cases, we show that R\'{e}nyi entropies all these obey area law. Besides, also investigate features constraints imposed on make Finally, as an application, apply entropy to...
Gas tungsten arc welding is the primary process for precision joining. To develop a control system this process, novel sensor proposed to measure depth of weld pool surface using non-transferred arc. A flat periodically established provide real-time reference. The main-arc-on period selected as system's input. Because possible large variations/ranges in manufacturing conditions, an interval model algorithm with updated intervals adopted. demonstrate use and algorithm, closed-loop experiments...
Summary The vehicle height and body posture adjustment of electronically controlled air suspension (ECAS) poses great challenges to hybrid control, since it involves discrete events solenoid valve (SV) switching dynamic evolutions continuous variables. This article investigates in the modeling verification control system. A nonlinear mechanism model ECAS which considers pneumatic characteristics SV is established. On basis mixed logical dynamical (MLD) approach, a automaton describing on–off...
Accurate and long-term prediction of elbow flexion force can be used to recognize the intended movement help wearable power-assisted robots improve control performance. Our study aimed find a proper relationship between electromyography force. However, existing methods must incorporate biomechanical models produce accurate timely predictions Elbow is largely determined by contractile properties muscles, motor function muscles has thoroughly analyzed. Therefore, based on investigation...
During lower-extremity rehabilitation training, muscle activity status needs to be monitored in real time adjust the assisted force appropriately, but it is a challenging task obtain noninvasively. Mechanomyography (MMG) signals offer unparalleled advantages over sEMG, reflecting intention of human movement while being noninvasive. Therefore, this paper, based on MMG, combined scheme gray relational analysis (GRA) and support vector regression optimized by an improved cuckoo search algorithm...
Nonlinear interaction of the Langmuir wave and dust-acoustic in plasmas with variable-charge grains has been investigated. In approximation small amplitude, we find solution envelope soliton for nonlinear wave. The results show that amplitude increases increasing dust grain density.
Photoconductors based on V-grooved Al0.5Ga0.5As/GaAs multiple quantum wires (QWR) were fabricated. The geometric structure of the QWR was carefully characterized by transmission electron microscopy and spatially resolved microphotoluminescence measurements. Infrared response at 9.2 μm is observed from photocurrent spectrum measured 80 K. It attributed as intersubband transition in wire region. Due to effective confinement two (111)-surfaces forming V groove, overlapping between ground state...
In the submerged floating tunnel (SFT) design and future construction, buoyancy-weight ratio (BWR) slack-taut performance (STP) are two intrinsic issues with respect to SFT dynamic response stability under structural external loadings. BWR is defined as of buoyancy whole weight. Our experiments numerical simulations indicate that dominates most important parameter be considered in design. For this, we re-state essential concept "Synergetic range BWR". This regarded as, for an structure...
The linear prediction coefficients obtained from noisy speech have an important impact on improving the quality of enhanced in enhancement algorithm based Kalman Smoother. According to properties slow changes vocal tract, this paper proposes a novel smoothing for tract parameters smoother. Firstly, are converted into line spectrum frequency parameters. Then, these adjacent frames smoothed before they transform state transition matrix. Experimental results indicate that proposed smoother can...
With the increase in number of senior citizens and disabled persons, there is a growing demand for human-friendly wheelchairs as mobility aids. Wheelchair often controlled by hands via joysticks, so it inconvenient difficult persons to play sports. To solve this problem, paper presents method motion control based on sitting postures, including direction speed hand-free control. The high-speed analog data acquisition system provides enough information according postures wheelchair users,...