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Capacitance and conductance dispersion in AlGaN/GaN heterostructure

Journal of Semiconductors 2013年第1期34卷 35-38页

作者：闫大为王福学朱兆旻程建敏顾晓峰 Key Laboratory of Advanced Process Control for Light Industry(Ministry of Education) Department of Electronic EngineeringJiangnan University

The dispersion mechanism in Al0：27Ga0：73N/GaN heterostructure was investigated using frequencydependent capacitance and conductance *** was found that the significant capacitance and conductance dispersion occurred primarily for measurement frequency beyond 100 kHz before the channel cutoff at the interface,suggesting that the vertical polarization electrical field under the gate metal should be closely related with the observed dispersive *** to the Schottky-Read-Hall model,a traditional trapping mechanism cannot be used to explain our ***,a piezoelectric polarization strain relaxation model was adopted to interpret the *** fitting the obtained capacitance data,the corresponding characteristic time and charge density were determined 10..8 s and 5.26 1012 cm..2 respectively,in good agreement with the conductance data and theoretical prediction.

关键词： capacitance dispersion AlGaN/GaN heterostructure strain relaxation model

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Distributed H∞ Filtering for Active Semi-vehicle Suspension Systems through Network with Limited Capacity 35

Distributed H∞ Filtering for Active Semi-vehicle Suspension...

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第35届中国控制会议

作者： ZHENG Xiaoyuan ZHANG Hao YAN Huaicheng Department of Control Science and Engineering Tongji University Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education

ISBN: (纸本)9781509009107

This paper investigates a distributed H filtering problem for active semi-vehicle suspension *** active semi-vehicle suspension system is divided into two subsystems and filter systems are designed for each *** information of active semi-vehicle suspension system is transmitted via wireless network with limited ***,the limited bandwidth and time delay of network are taken into *** applying Lyapunov functional approach,the H filtering performance is established,and the filtering design is converted to optimization problem with linear matrix inequality ***,a simulation experiment is provided to illustrate the effectiveness of the proposed filtering system.

关键词： Active semi-vehicle suspension system Time-delay Event-triggered Distributed H_∞ filter

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Design of novel DDSCR with embedded PNP structure for ESD protection

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Journal of Semiconductors 2015年第12期36卷 110-113页

作者：毕秀文梁海莲顾晓峰黄龙 Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Department of Electronic EngineeringJiangnan University

A novel dual-directional silicon controlled rectifier（DDSCR） device with embedded PNP structure（DDSCR-PNP） is proposed for electrostatic discharge（ESD） protection, which has greatly reduced latch-up risk owing to the improved holding voltage（V_h/. Firstly, the working mechanism of the DDSCR-PNP is analyzed. The theoretical analysis indicates that the proposed device possesses good voltage clamp ability due to the embedded PNP（PNP_2）. Then, experimental devices are fabricated in a 0.35 m bipolar-CMOS-DMOS process and measured with a Barth 4002 transmission line pulse testing system. The results show that the V_h of DDSCR-PNP is much higher than that of the conventional DDSCR, and can be further increased by adjusting the P well ***, the reduced leakage current（I_L/ of the DDSCR-PNP shows obvious fluctuations when the P well width is increased to more than 12 m. Finally, the factors influencing V_h and I_L are investigated by Sentaurus simulations. The results verify that the lateral PNP_2 helps to increase V_h and decrease I_L. When the P well width is further increased, the effect of the lateral PNP_2 is weakened, causing an increased I_L. The proposed DDSCR-PNP provides an effective and attractive ESD protection solution for high-voltage integrated circuits.

关键词： electrostatic discharge dual-directional silicon controlled rectifier trigger voltage holding voltage leakage current

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Luminescence properties of tetrapod ZnO nanostructures

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Journal of Semiconductors 2014年第6期35卷 14-18页

作者：王福学蔡小龙闫大为朱兆旻顾晓峰 Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Department of Electronic EngineeringJiangnan University

The tetrapod ZnO nanostructures are synthesized on the Si （100） substrates using the chemical va- por deposition （CVD） method at 1000 ℃. Each nanostructure has four arms which are about 3-10 μm in length and 0.2-1.5 μm in diameter. Further analyses on structure demonstrate that the tetrapod ZnO nanostructures have single crystalline wurtzite hexagonal structure preferentially oriented in c-axis. The photoluminescence （PL） mea- surements of the tetrapod ZnO nanostructures revealed a UV peak at 382 nm corresponding to the free exciton emission, and a green peak at 523 nm arising from deep level emission. For comparative analysis, cathodolumines- cence （CL） spectra obtained from different regions of an individual tetrapod are investigated. Moreover, a possible growth mechanism of the tetrapod ZnO nanostructures is also discussed based on the experimental results.

关键词： ZnO tetrapod nanostructures cathodoluminescence photoluminescence optical properties

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A novel model and behavior analysis for a swarm of multi-agent systems with finite velocity

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Chinese Physics B 2014年第9期23卷 590-593页

作者：王良顺吴治海 Key Laboratory of Image Processing and Intelligent Control of the Ministry of Education School of AutomationHuazhong University of Science and Technology Key Laboratory for Advanced Process Control of Light Industry of the Ministry of Education School of Internet of Things EngineeringJiangnan University

Inspired by the fact that in most existing swarm models of multi-agent systems the velocity of an agent can be infinite, which is not in accordance with the real applications, we propose a novel swarm model of multi-agent systems where the velocity of an agent is finite. The Lyapunov function method and LaSalle＇s invariance principle are employed to show that by using the proposed model all of the agents eventually enter into a bounded region around the swarm center and finally tend to a stationary state. Numerical simulations are provided to demonstrate the effectiveness of the theoretical results.

关键词： multi-agent systems swarm finite velocity attraction and repulsion

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Fuzzy H∞ Filtering for Nonlinear Networked Systems with Multiple Stochastic Time-Varying Delays, Packet Dropouts and Sensor Saturation 34

Fuzzy H∞ Filtering for Nonlinear Networked Systems with Mul...

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第三十四届中国控制会议

作者： XU Xiaoli YAN Huaicheng ZHANG Hao SHI Hongbo Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education School of information Science and Engineering East China University of Science and Technology Key Laboratory of Embedded System and Service Computing Ministry of Education

ISBN: (纸本)9781467374439

This paper investigates the problem of H∞ filter design for a class of nonlinear networked system based on T-S fuzzy model. Multiple stochastic time-varying delays and some incomplete information are considered simultaneously. Incomplete information includes randomly occurring sensor saturation and packet dropouts. Stochastic time-varying delays are depicted as a sequence of stochastic and independent variables, which take values on 0 and 1. Two sets of Bernoulli distributed white noises are introduced to describe randomly occurring sensor saturation and packet dropouts. System conservatism is reduced due to introduce an approach of piecewise quadratic Lyapunov function. By solving a set of linear matrix inequalities(LMIs), the filter parameters are obtained. Finally, a simulation example is provided to illustrate the effectiveness of the proposed filter design approach.

关键词： H ∞ filtering,multiple time-varying delays,randomly occurring sensor saturation,packet dropouts,piecewise quadratic Lyapunov function

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Event-triggered robust control for networked control systems with actuator failures and time-varying transmission delays

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International Journal of Intelligent Computing and Cybernetics 2015年第2期8卷 172-186页

作者： Peng Pan Shun Jiang Feng Pan Key Laboratory of Advanced Process Control for Light Industry(Ministry of Education) Jiangnan UniversityWuxiChina

Purpose–The purpose of this paper is with robust control problem for event-triggered networked control systems(NCSs)with actuator failures and time-varying transmission ***/methodology/approach–A random sequence is introduced to describe the actuator faults,and a novel event-triggering communication scheme is adopted in the sensor-to-controller *** taking the event-triggered mechanism and network transmission delay into consideration,a delay system model is ***–Based on Lyapunov stability theory and free weighting matrix method,the feasibility criteria for co-designing both the controller gain and the trigger parameters are ***,a simulation example is exploited to demonstrate the effectiveness of the proposed linear matrix inequalities(LMIs)***/value–The introduced approach is interesting for NCSs with actuator failures and timevarying transmission delays.

关键词： Robust control Networked control Actuator failure Event-triggering scheme

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A soft sensor modelling of biomass concentration during fermentation using accurate incremental online ν-support vector regression learning algorithm

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American Journal of Biochemistry and Biotechnology 2015年第3期11卷 149-159页

作者： Gu, Binjie Pan, Feng Key Laboratory of Advanced Process Control for Light Industry Ministry of Education Jiangnan University Wuxi China

In order to model real fermentation process, a soft sensor modelling of biomass concentration during fermentation using accurate incremental online ν-Support Vector Regression (ν-SVR) learning algorithm was proposed. Firstly, an accurate incremental online v-SVR learning algorithm was proposed. This algorithm solved the two complications introduced in the dual problem based on the equivalent formulation of ν-SVR. Moreover, it addressed the infeasible updating path problem during the adiabatic incremental process by relaxed adiabatic incremental adjustments and accurate incremental adjustments. Then, the proposed algorithm is used to predict the biomass concentration of glutamic acid fed-batch fermentation process online. The results of simulation experiment showed that the soft sensor modelling of biomass concentration during fermentation using the proposed algorithm was of better generalization ability and cost less training time than that of ν-SVR. © 2015 Binjie Gu and Feng Pan.

关键词： Fermentation

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A nitrate ion-selective electrode based on tetradodecylammonium bromide

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Sensor Letters 2015年第11期13卷 986-991页

作者： He, Mengmeng Li, Yinhua Yu, Xiaodong Yang, Huizhong Key Laboratory of the Ministry of Education for Advanced Control in Light Industry Process Jiangnan University Wuxi China

A novel nitrate ion-selective electrode (ISE) based on polyvinyl chloride (PVC) membrane was developed. The tetradodecylammonium bromide (TDAB) was used as an ionophore. As plasticizers, Dinoctylphthalate (DOP), Dibutylphthalate (DBP) and 1-decanol, 2-nitrophenyl n-octyl ether (o-NPOE) were applied to the process of membrane manufacture, respectively. The performances of nitrate sensitive electrode were improved by tuning the composition ratio of PVC membrane. The membrane with a ratio of 2:65:33 (I(ionophore): DOP: PVC, w/w) was proved to be optimal by results. The electrode showed linear response with a Nernstian slope of -54±1.0 mV/decade. The range of detection concentration was from 10-5to 10-1mol/L and its detection limit was determined as 3.0×10-6mol/L at pH of 2.8 and 8.5. High selectivity coefficients for nitrate ions against other anions indicated the good selectivity. The ISE could be used over a period of two months with good reproducibility and short response time. The process of the ISE manufacture was easy and inexpensive. It can be applied to qualitative analysis of nitrate in water. Copyright © 2015 American Scientific Publishers All rights reserved.

关键词： Ion selective electrodes

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Method for coloring night-vision imagery based on multispectral semantic segmentation

Method for coloring night-vision imagery based on multispect...

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2018 Australian and New Zealand control Conference, ANZCC 2018

作者： Zhang, Weiwen Gu, Xiaojing Gu, Xingsheng Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai China

ISBN: (纸本)9781538666173

Color night vision can map natural colors to nighttime images of multiple bands (e.g., visible and long-wave infrared (LWIR)). These colors can assist the observers in better and faster understanding images, thus improving their situational awareness and shortening the reaction time. In this paper, we present an effective method combining deep learning and category colors. It utilizes the semantic segmentation for image segmentation first, and then colorize the image according to categories to avoid the same color scheme and unnatural colors. We compare our method with some others quantitatively and qualitatively, such as global colorization by single lookup table, where we show significant improvements. In addition, it can be expanded according to different environments and applications because of the fixed category colors. © 2018 IEEE.

关键词： Color

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