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International Conference on Soft Computing and Machine Intelligence (ISCMI)

作者： Rui Sun Xiancheng Feng Hongyi Xia Department of Electronic Engineering City University of Hong Kong Hong Kong China Hubei Key Laboratory of Intelligent Robot Wuhan Institute of Technology Wuhan China School of Electronics and Information Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9781467398206

With the trend of aging of society, the number of empty nesters is rising, which has become a social problem that cannot be ignored. In this paper, two empty nester recognition models were presented based on the analysis of calling list and user information table. Based on the normal data, the empty nesters and their children's number can be identified by a recognition function. When the properties of a user are not adequate, recognition function cannot be applied to identify it. Feed forward neural network algorithm is used to solve this problem. The recognition accuracy rate can reach 73.3% after training the network. Based on the research, certain approaches can be made to improve the situations, which is beneficial to the development of a harmonious society.

关键词： Feeds Cities and towns Character recognition Biological neural networks Data models Training

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HOSVD-Based Subspace Algorithm for Multidimensional Frequency Estimation Without Pairing Parameters

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Chinese Journal of electronics 2014年第4期23卷 729-734页

作者： WU Yuntao HUANG Longting CAO Hui ZHANG Yanbin Key Laboratory of Intelligent Robot in Hubei Province Wuhan Institute of Technology Department of Electronic Engineering City University of Hong Kong School of Information and Communication Engineering Beijing University of Posts and Telecommunications

In this paper, a new method for multidimensional frequency estimation of multiple sinusoids that combines the HOSVD(Higher-order singular value decomposition) subspace and projection separation approaches is presented. Frequency parameters in the first dimension are obtained by using the signal subspace of the first dimension which is extracted by the HOSVD decomposition. Subsequently, a set of projection separation matrices is constructed to project the measure tensor and separate the components of the received tensor into single *** then, the signal subspace of each dimension of separated measure tensor are estimated by the HOSVD decomposition and the desired multidimensional frequency pairing are automatically obtained. Simulation results are included to demonstrate the advantage of the proposed method over two existing methods in terms of performance as well computational load.

关键词： Multidimensional frequency estimation Higher-order singular value decomposition Subspacebased method Projection separation appro

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The application of wavelet analysis in testing of subsurface safety valve

The application of wavelet analysis in testing of subsurface...

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IEEE International Conference on Progress in Informatics and Computing (PIC)

作者： Lixin Lu Zheng Li Guiqin Li Shuxun Li Yunjiang Dong Rudong Lu Key Laboratory of Intelligent Manufacturing and Robotics Shanghai University Shanghai China Shanghai University Shanghai Shanghai CN Shanghai Genie-Robot Automatic Co. Ltd. Shanghai China Shanghai Extrong Oilfield Technology Co. Ltd. Shanghai China

With the increase of oil and gas wells, the use of various types of subsurface safety valve is growing rapidly. Safety valve testing is an important step to check whether the safety valve is qualified. The accuracy of the test results is affected by the reliability of the test system, as well as the accuracy of the test signal interpretation and record. Therefore, it is necessary to accurately identify and record the test signal of the safety valve test system. From the characteristics of the pressure test signal of the subsurface safety valve, this paper extract the 8 nodes: pressure beginning, safety valve opening, safety valve full opening, pressure keeping, pressure reducing, safety valve closure, safety valve complete closure, pressure recovery. Among them, the full opening of the safety valve and the full closure of the safety valve are "record points". Wavelet transform method is applied to signal analysis. Biorthogonal wavelet with the symmetry is selected for Discrete Wavelet Transforming (DWT). The appropriate threshold is determined for denoising to the details of the signal. The results show that the wavelet analysis can be used to accurately identify and locate the “record points”. This paper provides an efficient and accurate method for the signal recognition of the safety valve test system.

关键词： Wavelet analysis Valves Wavelet coefficients

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Enhanced harmonic generation and carrier-envelope phase-dependent effects in cavity quantum electrodynamics

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Physical Review A 2015年第1期92卷 013849-013849页

作者： Jiahua Li Rong Yu Chunling Ding Duo Zhang Ying Wu School of Physics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China Key Laboratory of Fundamental Physical Quantities Measurement of Ministry of Education Wuhan 430074 People's Republic of China School of Science Hubei Province Key Laboratory of Intelligent Robot Wuhan Institute of Technology Wuhan 430073 People's Republic of China School of Physics and Electronics Henan University Kaifeng 475004 People's Republic of China School of Electrical and Electronic Engineering Wuhan Polytechnic University Wuhan 430023 People's Republic of China

A lot of experimental and theoretical studies of a system in cavity quantum electrodynamics (cavity QED), which consists of two spatially separated quantum emitters strongly coupled to a single optical cavity mode, have recently attracted much interest in the quantum optics community for various quantum information applications. Here, we propose a method for high-order harmonic generation in a photonic crystal microcavity coupled to single semiconductor quantum dots (QDs). The system is coherently driven by a bichromatic laser consisting of the control and signal fields at low input power (a few nanowatts) and the cavity output power via the cavity loss channel is monitored. Via numerical simulations, we thoroughly explore the difference of the generated high-order harmonic spectra between two QDs, one QD, and zero QDs in microcavity. The results clearly indicate that harmonic generation can be significantly enhanced via collective coherent coupling in the case of two spatially separated QDs coupled to the same photonic crystal microcavity mode. In addition, we present a study of the carrier-envelope phase (CEP) effect on high-order harmonic spectra, which may provide the insight of CEP effect in a new regime. Beyond this, our obtained results also apply to other classes of single-mode cavity-QED setup incorporating two-level atoms or comparable solid-state emitters.

关键词： HARMONIC generation NONLINEAR optics QUANTUM electrodynamics QUANTUM dots SEMICONDUCTORS PHOTONIC crystals

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Operator-based robust decoupling control for MIMO nonlinear systems

Operator-based robust decoupling control for MIMO nonlinear ...

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World Congress on intelligent Control and Automation (WCICA)

作者： Shuhui Bi Yongfei Xiao Xinjian Fan Mingcong Deng Shandong Provincial Key Laboratory of Robot and Manufacturing Automation Technology Shandong Academy of Sciences Jinan Shandong China Department of Electrical and Electronic Engineering Tokyo University of Agriculture and Technology Koganei Tokyo Japan

In this paper, operator-based robust decoupling control system design for multi-input multi-output (MIMO) nonlinear system is considered. That is, by using the proposed operator based robust decoupling control design, coupling effects existing in the MIMO nonlinear plants can be decoupled based on a feedback design and robust right coprime factorization approach, and the robust stability can be guaranteed. After that, an output tracking system is designed for the stabilizing system and the desired output tracking performance can be realized. Finally, a simulation example about robust control for two-link rigid manipulator is given to support the theoretical analysis.

关键词： Robustness MIMO Nonlinear systems Couplings Feedback control Control design Robust control

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Enhanced optical nonlinearity and fiber-optical frequency comb controlled by a single atom in a whispering-gallery-mode microtoroid resonator

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Physical Review A 2014年第5期90卷 053832-053832页

作者： Jiahua Li Suzhen Zhang Rong Yu Duo Zhang Ying Wu School of Physics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China Key Laboratory of Fundamental Physical Quantities Measurement of Ministry of Education Wuhan 430074 People's Republic of China School of Science Hubei Province Key Laboratory of Intelligent Robot Wuhan Institute of Technology Wuhan 430073 People's Republic of China School of Electrical and Electronic Engineering Wuhan Polytechnic University Wuhan 430023 People's Republic of China

Based on a single atom coupled to a fiber-coupled, chip-based microresonator [B. Dayan et al., Science 319, 1062 (2008)], we put forward a scheme to generate optical frequency combs at driving laser powers as low as a few nanowatts. Using state-of-the-art experimental parameters, we investigate in detail the influences of different atomic positions and taper-resonator coupling regimes on optical-frequency-comb generation. In addition to numerical simulations demonstrating this effect, a physical explanation of the underlying mechanism is presented. We find that the combination of the atom and the resonator can induce a large third-order nonlinearity which is significantly stronger than Kerr nonlinearity in Kerr frequency combs. Such enhanced nonlinearity can be used to generate optical frequency combs if driven with two continuous-wave control and probe lasers and significantly reduce the threshold of nonlinear optical processes. The comb spacing can be well tuned by changing the frequency beating between the driving control and probe lasers. The proposed method is versatile and can be adopted to different types of resonators, such as microdisks, microspheres, microtoroids or microrings.

关键词： FIBER optics NONLINEAR optics MICRORESONATORS (Optoelectronics) KERR electro-optical effect OPTICAL waveguides

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Operator-based Robust Control for Nonlinear Uncertain Systems with Input Nonlinearity

Operator-based Robust Control for Nonlinear Uncertain System...

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第三十二届中国控制会议

作者： BI Shuhui DENG Mingcong WANG Lei ZHANG Yanfang Shandong Provincial Key Laboratory of Robot and Manufacturing Automation Technology Institute of AutomationShandong Academy of Sciences Department of Electrical and Electronic Engineering Tokyo University of Agriculture and Technology

ISBN: (纸本)9781479900305

In this paper,robust control for nonlinear uncertain systems with input nonlinearity is considered by using operator based robust right coprime factorization *** details,an operator based control design structure is proposed for nonlinear uncertain system with input *** on the proposed design scheme,the designed system is robustly ***, the desired output tracking performance can be realized ***,a simulation example on a nonlinear plant preceded by unknown backlash is given to show the design procedure of the proposed method.

关键词： Operator based robust right coprime factorization Input nonlinearity Robust control

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3-D frequency estimation of multiple damped sinusoids using subspace approach

3-D frequency estimation of multiple damped sinusoids using ...

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IET International Radar Conference 2013

作者： Cao Hui Yuntao Wu Yanbin Zhang Longting Huang Key Laboratory of Intelligent Robot in Hubei Province Wuhan Institute of Technology Wuhan China Key Lab of Intelligent Robot in Hubei Province Wuhan Institute of Technology 430073 China Department of Electronic Engineering City University of Hong Kong Hong Kong

In this paper, a computationally efficient method that combines the subspace and principal singular vectors utilization for modal analysis (PUMA) is proposed for 3-D frequency estimation of multiple damped sinusoids. The perspective idea is the construction of 2-D sliced matrices from 3-D sinusoids, and then the 2-D sliced matrices are used to construct a set of covariance matrix to obtain the SVD of each covariance matrix. The available PUMA method is employed to estimate the frequencies and the damped factors in each dimension. Moreover, we can use existing matching algorithms to pair the 3-D frequency parameters. Only the original scale of sampled data is fully utilized, so the proposed method is more computationally attractive than the two existing methods.

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Operator-based robust control for nonlinear uncertain systems with input nonlinearity

Operator-based robust control for nonlinear uncertain system...

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Chinese Control Conference (CCC)

作者： Shuhui Bi Mingcong Deng Lei Wang Yanfang Zhang Shandong Provincial Key Laboratory of Robot and Manufacturing Automation Technology Shandong Academy of Sciences Jinan Shandong P. R. China Department of Electrical and Electronic Engineering Tokyo University of Agriculture and Technology Koganei Tokyo Japan

In this paper, robust control for nonlinear uncertain systems with input nonlinearity is considered by using operator based robust right coprime factorization approach. In details, an operator based control design structure is proposed for nonlinear uncertain system with input nonlinearity. Based on the proposed design scheme, the designed system is robustly stable. Moreover, the desired output tracking performance can be realized simultaneously. Finally, a simulation example on a nonlinear plant preceded by unknown backlash is given to show the design procedure of the proposed method.

关键词： Robustness Control design Nonlinear systems Robust control Uncertain systems Hysteresis

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Achieving three-dimensional entanglement between two spatially separated atoms by using the quantum Zeno effect

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Physical Review A 2013年第6期87卷 062316-062316页

作者： Siping Liu Jiahua Li Rong Yu Ying Wu Wuhan National Laboratory for Optoelectronics and School of Physics Huazhong University of Science and Technology Wuhan 430074 People's Republic of China School of Physics and Electronic Engineering Hubei University of Arts and Science Xiangyang 441053 People's Republic of China School of Science Hubei Province Key Laboratory of Intelligent Robot Wuhan Institute of Technology Wuhan 430073 People's Republic of China

Based on the quantum Zeno effect [B. Misra and E. C. G. Sudarshan, J. Math. Phys. 18, 756 (1977)], we propose a scheme to achieve three-dimensional (3D) entanglement between two distant five-level atoms. In our scheme, the two atoms are trapped individually in two spatially-separated double-mode cavities connected by an optical fiber. It is found that the effective quantum Zeno dynamics of the composite cavity-fiber-cavity coupled system gives rise to the deterministic creation of the 3D entangled state with high fidelity. Moreover, only one step operation is required to complete the generation of the 3D entangled state. The numerical simulations clearly show that the proposed scheme is robust against the deviation of the system parameters and insensitive to various decoherence factors, including atomic spontaneous emissions, cavity decays and fiber photon leakages. We justify our scheme by considering the experimental feasibility within the currently available technology.

关键词： QUANTUM Zeno dynamics QUANTUM entanglement ATOMS QUANTUM states OPTICS RESEARCH

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