Prof. Li Zhou Profile

Prof. Li Zhou

at Nanjing Univ of Aeronautics and Astronautics

SPIE Involvement:

Author

Publications (40)

Proceedings Article | 9 May 2024 Poster + Paper

A classification method of flutter test signals based on CNN and HHT

Guanghang Xu, Li Zhou

Proceedings Volume 12949, 129491N (2024) https://doi.org/10.1117/12.3025724

KEYWORDS: Convolutional neural networks, Feature extraction, Signal processing, Wind speed, Vibration

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Proceedings Article | 9 May 2024 Poster + Paper

Design of auxiliary drive mechanism for folding wing structure

Chenxiao Li, Li Zhou, Tao Qiu

Proceedings Volume 12949, 129491M (2024) https://doi.org/10.1117/12.3025721

KEYWORDS: Design, Solids, Elasticity, Deformation, Simulations, Mechanical efficiency

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The folding-wing aircraft can obtain appropriate lift and drag by changing the folding angle of the wing. At different stages of the aircraft executing tasks, there can be a corresponding flight state. When the carrier -based aircraft is parked, the occupation space can be reduced by folding by the wing, which can increase the number of carrier -based aircraft. The folding wing drive mechanism is a key technology for folding the wing, which has a key impact on the characteristics of structural transmission. The driving force of the traditional folding wing mechanism is positively related to the size of the drive. Therefore, in the traditional folding wing drive mechanism, if the driving force required when the wing is folded is large, it must use a large size actuators, but this is often limited by the space at the wing shaft. To solve this problem, a folding wing auxiliary drive mechanism is designed in this article. This mechanism uses spring deformation to store the gravity of the wing unfolding process as elastic potential energy and release it when the wing is folded. The use of this mechanism not only increases the driving capacity of the folding wing drive mechanism, but also reduces the power requirement of the main drive. In order to convert the rotation movement when folding the wing into a linear motion, a rotary-to-linear device is designed in this article. In order to eliminate the restrictions on the working load and displacement itinerary in the spring design, this article designed a new type of energy storage spring device: a solid-liquid hybrid spring device, and two spring design schemes are given. Based on the demand of force and displacement strokes, this article gives a detailed design of the auxiliary drive mechanism, and a detailed description of the structural layout and specific operation method is given. On this basis, a key parameter of the auxiliary drive mechanism is given. Finally, the renderings of the auxiliary drive when the wing folding and unfolding are shown.

Proceedings Article | 18 April 2023 Poster + Paper

Flutter boundary prediction method based on VMD decomposition using prediction signal

Tongxi Wu, Li Zhou

Proceedings Volume 12487, 124871M (2023) https://doi.org/10.1117/12.2657943

KEYWORDS: Signal attenuation, Wind speed, Signal processing, Frequency modulation, Fermium, Modal decomposition, Wind measurement, Matrices, Turbulence, Spectral response

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Proceedings Article | 18 April 2023 Poster + Paper

Continuous wavelet transform for modal parameter identification of flutter data

Qingyu Guo, Li Zhou

Proceedings Volume 12487, 124871K (2023) https://doi.org/10.1117/12.2657940

KEYWORDS: Wavelets, Continuous wavelet transforms, Time-frequency analysis, Wind speed, Vibration, Wavelet transforms, Matrices, Turbulence, Support vector machines, Signal processing

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Proceedings Article | 18 April 2023 Poster + Paper

Flutter boundary prediction method based on HHT and machine learning

Zhongxin Hong, Li Zhou, Mingfeng Chen

Proceedings Volume 12487, 124871N (2023) https://doi.org/10.1117/12.2657935

KEYWORDS: Data modeling, Wind speed, Machine learning, Detection and tracking algorithms, Decision trees, Image classification, Wind measurement, Spectral response, Linear regression, Statistical modeling

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Proceedings Article | 20 April 2022 Poster + Paper

Design and analysis of squid-like jet propeller actuated by piezoelectric pumps

Runzi Qin, Li Zhou, Qiu Tao

Proceedings Volume 12041, 120410F (2022) https://doi.org/10.1117/12.2612292

KEYWORDS: Biomimetics, Absorption, Biological research, Shape memory alloys, Analytical research, Actuators, Stress analysis, Structural design, Piezoelectric driven mechanisms, Piezoelectric drives

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Proceedings Article | 18 April 2022 Paper

Modal identification method based on ESMD and MPM

Mingfeng Chen, Li Zhou

Proceedings Volume 12047, 120471B (2022) https://doi.org/10.1117/12.2611712

KEYWORDS: Signal processing, Wind measurement, Signal attenuation, Detection theory, Turbulence, Signal to noise ratio, Error analysis, Electronic filtering, Data processing, Data modeling

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Proceedings Article | 18 April 2022 Paper

Flutter boundary prediction method based on CEEMDAN

Daheng Zhou, Li Zhou

Proceedings Volume 12047, 120471C (2022) https://doi.org/10.1117/12.2612246

KEYWORDS: Signal attenuation, Signal processing, Turbulence, Interference (communication), Signal to noise ratio, Correlation function

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Proceedings Article | 18 April 2022 Poster + Paper

Distributed flexible drive of trailing edge variable camber wing

Pengchong Ding, Li Zhou, Tao Qiu

Proceedings Volume 12046, 1204619 (2022) https://doi.org/10.1117/12.2611738

KEYWORDS: Structured optical fibers, Aerodynamics, Structural design, Stress analysis, Resistance, Reliability, Mechanics, Manufacturing, Lithium, Liquids

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Proceedings Article | 23 April 2020 Paper

Flutter boundary prediction under continuous variable speed based on time series models

Hao Bai, Li Zhou

Proceedings Volume 11379, 1137923 (2020) https://doi.org/10.1117/12.2558038

KEYWORDS: Autoregressive models, Data modeling, Signal processing, Systems modeling, Wind measurement, Analytical research

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Proceedings Article | 23 April 2020 Paper

Compensation method for torsional stiffness of flexible wing

Pengbo Zhi, Li Zhou, Tao Qiu

Proceedings Volume 11379, 113791Z (2020) https://doi.org/10.1117/12.2557758

KEYWORDS: Composites, Aerodynamics, Intelligent sensors, Mechanical efficiency, Aircraft structures, Mechanics, Skin, Resistance, Factor analysis

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Proceedings Article | 23 April 2020 Paper

Application of wavelet denoising and a masking signal for flutter boundary prediction

Chao Bian, Li Zhou

Proceedings Volume 11379, 1137921 (2020) https://doi.org/10.1117/12.2557776

KEYWORDS: Wavelets, Denoising, Signal processing, Interference (communication), Signal to noise ratio, Signal analyzers, Wavelet transforms, Mechanics, Astronomical engineering, Analytical research

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Proceedings Article | 23 April 2020 Paper

Design and analysis of flexible skin for variable camber wing

Yilin Chen, Li Zhou, Tao Qiu

Proceedings Volume 11379, 1137922 (2020) https://doi.org/10.1117/12.2557958

KEYWORDS: Skin, Aerodynamics, Finite element methods, Mechanics, Data modeling, Resistance, Analytical research

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Proceedings Article | 27 March 2019 Paper

An approach of identifying the parameters of IMFs based on PLF

Yuan Shi, Li Zhou

Proceedings Volume 10970, 109702U (2019) https://doi.org/10.1117/12.2514247

KEYWORDS: Signal processing, Signal attenuation, Bandpass filters, Signal to noise ratio, Data processing, Mathematical modeling, Turbulence, Electronic filtering, Mechanics, Radon

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Proceedings Article | 27 March 2019 Paper

Design and analysis of flexible skin based on zero Poisson's ratio hybrid honeycomb

Chang Zhao, Li Zhou, Tao Qiu

Proceedings Volume 10970, 109702K (2019) https://doi.org/10.1117/12.2511421

KEYWORDS: Skin, Silicon, Shape analysis, Resistance, Foam, Structural design, Finite element methods, Silica, Aerodynamics

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Proceedings Article | 27 March 2018 Paper

Real-time flutter boundary prediction using peak-hold method

Yingwen Ma, Li Zhou

Proceedings Volume 10599, 105992J (2018) https://doi.org/10.1117/12.2301241

KEYWORDS: Signal analyzers, Data modeling, Aerodynamics, Astronomical engineering, Copper, Turbulence, Autoregressive models

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Proceedings Article | 27 March 2018 Paper

Real-time flutter boundary prediction based on time series models

Wenjing Gu, Li Zhou

Proceedings Volume 10599, 105992I (2018) https://doi.org/10.1117/12.2301217

KEYWORDS: Aerodynamics, Autoregressive models, Signal processing, Data processing, Turbulence, Systems modeling, Interference (communication)

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Proceedings Article | 12 April 2017 Paper

Design and analysis of compound flexible skin based on deformable honeycomb

Tingting Zou, Li Zhou

Proceedings Volume 10168, 1016836 (2017) https://doi.org/10.1117/12.2258367

KEYWORDS: Skin, Analytical research, Mechanical engineering, Shape analysis, Performance modeling, Smart materials, Polymethylmethacrylate, Raw materials, Data modeling, Manufacturing, Sensors, Mechanics

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Proceedings Article | 12 April 2017 Paper

Design of flexible skin based on a mixed cruciform honeycomb

Jiaxin Rong, Li Zhou

Proceedings Volume 10168, 1016837 (2017) https://doi.org/10.1117/12.2258579

KEYWORDS: Skin, Aerodynamics, Performance modeling, Smart materials, Silicon, Aluminum, Mechanics, Resistance, Lithium, Astronomical engineering, Manufacturing, Sensors

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Proceedings Article | 11 April 2017 Paper

Parameter influence on tensile properties of scarf-repaired composite laminates

Lin Ding, Li Zhou

Proceedings Volume 10165, 101651F (2017) https://doi.org/10.1117/12.2258158

KEYWORDS: Composites, Mechanics, Astronomical engineering, Gallium, Error analysis, 3D modeling, Lithium

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Proceedings Article | 5 April 2017 Paper

Fatigue crack monitoring of aerospace structure based on binary tree support vector machines

Shenbo Lu, Li Zhou

Proceedings Volume 10170, 1017032 (2017) https://doi.org/10.1117/12.2258358

KEYWORDS: Aerospace engineering, Structural health monitoring, Damage detection, Signal processing, Feature extraction, Wave propagation, Sensors, Classification systems

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Proceedings Article | 20 April 2016 Paper

Multiple damage identification and imaging in an aluminum plate using effective Lamb wave response automatic extraction technology

Qinghua Ouyang, Li Zhou, Xiaotong Liu

Proceedings Volume 9803, 98034J (2016) https://doi.org/10.1117/12.2218798

KEYWORDS: Structural health monitoring, Sensors, Inspection, Signal processing, Evolutionary algorithms, Receivers, Actuators

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Proceedings Article | 20 April 2016 Paper

Modeling of PZT-induced Lamb wave propagation in structures by using a novel two-layer spectral finite element

Xiaotong Liu, Li Zhou, Qinghua Ouyang

Proceedings Volume 9803, 98034D (2016) https://doi.org/10.1117/12.2218960

KEYWORDS: Wave propagation, Finite element methods, Ferroelectric materials, Piezoelectric effects, Semiconducting wafers, Systems modeling, Optical simulations, Interfaces, Transducers, Numerical simulations, Chemical elements, Sensors, Actuators

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Proceedings Article | 6 April 2012 Paper

A statistical approach of fatigue crack detection for a structural hotspot

Pei Jin, Li Zhou

Proceedings Volume 8345, 83453P (2012) https://doi.org/10.1117/12.914990

KEYWORDS: Sensors, Statistical analysis, Wave propagation, Signal processing, Environmental sensing, Signal detection, Failure analysis, Structural health monitoring, Reliability, Aerospace engineering

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Proceedings Article | 14 April 2011 Paper

Damage detection for plate-like structure using matching pursuits with chirplet atom

Yongming Feng, Li Zhou, Zhen Li

Proceedings Volume 7981, 798128 (2011) https://doi.org/10.1117/12.880263

KEYWORDS: Chemical species, Signal processing, Dispersion, Composites, Scattering, Associative arrays, Actuators, Sensors, Wave propagation, Fourier transforms

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Proceedings Article | 1 April 2010 Paper

An experimental study on AEKF method for health monitoring of base-isolated structures

Qiang Yin, Li Zhou, Jann Yang

Proceedings Volume 7647, 764709 (2010) https://doi.org/10.1117/12.845590

KEYWORDS: Earthquakes, Surface conduction electron emitter displays, Filtering (signal processing), Electroluminescence, Optical isolators, Solids, Systems modeling, Finite element methods, Sensors, Motion models

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Proceedings Article | 1 April 2010 Paper

Experimental verifications of a structural damage identification technique using reduced order finite-element model

Rui Li, Li Zhou, Jann Yang

Proceedings Volume 7647, 76470A (2010) https://doi.org/10.1117/12.845593

KEYWORDS: Finite element methods, Sensors, Damage detection, Error analysis, Structural health monitoring, System identification, Electroluminescence, Filtering (signal processing), Motion models, Matrices

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Proceedings Article | 4 April 2009 Paper

Torsional waves in clad cores

Weiliang Kong, Li Zhou, Fuh-Gwo Yuan

Proceedings Volume 7292, 72920O (2009) https://doi.org/10.1117/12.817517

KEYWORDS: Cladding, Dispersion, Wave propagation, Signal attenuation, Phase velocity, Waveguides, Bessel functions, Aerospace engineering, Lithium, Astronomical engineering

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Proceedings Article | 30 March 2009 Paper

Comparison of various structural damage tracking techniques with unknown excitations based on experimental data

Hongwei Huang, Jann Yang, Li Zhou

Proceedings Volume 7292, 729230 (2009) https://doi.org/10.1117/12.815333

KEYWORDS: Surface conduction electron emitter displays, Error analysis, Sensors, Structural health monitoring, Filtering (signal processing), Data modeling, Finite element methods, Damage detection, Chemical elements, Civil engineering

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Proceedings Article | 8 April 2008 Paper

Comparison of various structural damage tracking techniques based on experimental data

Hongwei Huang, Jann Yang, Li Zhou

Proceedings Volume 6932, 693225 (2008) https://doi.org/10.1117/12.774621

KEYWORDS: Surface conduction electron emitter displays, Finite element methods, Error analysis, Filtering (signal processing), Sensors, Chemical elements, Civil engineering, Aerospace engineering, Reliability, Safety

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Proceedings Article | 10 April 2007 Paper

Experimental verification of an adaptive tracking technique for structural damage

Jann Yang, Hongwei Huang, Li Zhou

Proceedings Volume 6529, 65292S (2007) https://doi.org/10.1117/12.714399

KEYWORDS: Surface conduction electron emitter displays, Sensors, Error analysis, Solids, Finite element methods, Chemical elements, Data analysis, Structural health monitoring, Motion models, Aerospace engineering

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Proceedings Article | 10 April 2007 Paper

Semi-active flutter control of a high-aspect-ratio wing using multiple MR dampers

Jia-liang Hu, Li Zhou

Proceedings Volume 6529, 65291C (2007) https://doi.org/10.1117/12.716013

KEYWORDS: Control systems, Aerodynamics, Numerical simulations, Sodium, Aerospace engineering, Nonlinear control, Systems modeling, Vibration control, Motion models, Terbium

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Proceedings Article | 10 April 2007 Paper

Localization of damage and restoration of dynamic characteristics using distributed control

Chun-Lei Li, Li Zhou, Fuh-Gwo Yuan

Proceedings Volume 6529, 652936 (2007) https://doi.org/10.1117/12.715567

KEYWORDS: Feedback control, Actuators, Control systems, Damage detection, Sensors, Finite element methods, Algorithm development, Aerospace engineering, Lithium, Current controlled current source

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Proceedings Article | 11 April 2006 Paper

A pre-stack reverse-time migration method for multidamage detection in composite structure

Wei-Jie Meng, Li Zhou, Fuh-Gwo Yuan

Proceedings Volume 6174, 617444 (2006) https://doi.org/10.1117/12.685446

KEYWORDS: Composites, Sensors, Actuators, Ferroelectric materials, Wave propagation, Wave plates, Dispersion, Structural health monitoring, Damage detection, Image processing

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Proceedings Article | 17 May 2005 Paper

Wavelet-based built-in damage detection and identification for composites

G. Yan, Lily Zhou, F. G. Yuan

Proceedings Volume 5765, (2005) https://doi.org/10.1117/12.602435

KEYWORDS: Composites, Damage detection, Wave propagation, Sensors, Wave plates, Wavelets, Structural health monitoring, Time-frequency analysis, Aerospace engineering, Ferroelectric materials

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Proceedings Article | 29 July 2004 Paper

Identification of parametric changes for civil engineering structures using an adaptive kalman filter

Jann Yang, Silian Lin, Li Zhou

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.538325

KEYWORDS: Filtering (signal processing), Earthquakes, Error analysis, Civil engineering, System identification, Damage detection, Chemical elements, Computer simulations, Solids, Digital filtering

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Proceedings Article | 29 July 2004 Paper

Smart health monitoring system for a prestressed concrete bridge

Xuan Wang, Ming Wang, Yang Zhao, Han Chen, Lily Zhou

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.540353

KEYWORDS: Bridges, Sensors, Databases, Statistical analysis, Structural health monitoring, Rule based systems, Internet, Data archive systems, Computing systems, Data processing

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Proceedings Article | 29 July 2004 Paper

Fuzzy logic and genetic algorithms for intelligent control of structures using MR dampers

Gang Yan, Lily Zhou

Proceedings Volume 5391, (2004) https://doi.org/10.1117/12.540382

KEYWORDS: Fuzzy logic, Control systems, Genetic algorithms, Earthquakes, Genetics, Picosecond phenomena, Mathematical modeling, Nonlinear dynamics, Vibration control, Algorithm development

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Proceedings Article | 18 August 2003 Paper

Multivariable adaptive fuzzy control for nonlinear building-MR damper systems

Li Zhou, Chih-Chen Chang

Proceedings Volume 5057, (2003) https://doi.org/10.1117/12.488891

KEYWORDS: Control systems, Fuzzy logic, Complex systems, Nonlinear control, Adaptive control, Buildings, Fuzzy systems, Earthquakes, Actuators, Nickel

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Proceedings Article | 20 April 2000 Paper

Adaptive fuzzy control for a structure-MR damper system

Li Zhou, Chih-Chen Chang

Proceedings Volume 3988, (2000) https://doi.org/10.1117/12.383131

KEYWORDS: Control systems, Adaptive control, Complex systems, Fuzzy logic, Earthquakes, Fuzzy systems, Actuators, Algorithm development, Intelligence systems, Civil engineering

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Showing 5 of 40 publications

Conference Committee Involvement (12)