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检索条件"任意字段=3rd International Conference on Circuits, System and Simulation, ICCSS 2019"

共 736 条记录，以下是111-120 订阅

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simulation experiment research of applying superconducting receiving technology to satellite payload 3rd

Simulation experiment research of applying superconducting r...

引用

3rd international conference on Wireless Communications and Applications, ICWCA 2019

作者： Zhi, Jun Ji, Wei Pei, Yu- Dong Huang, Shan Beijing Institute of Remote Sensing Information Beijing China

ISBN: (纸本)9789811558788

Firstly, the paper analyzes the principle of applying superconducting receiving technology to satellite payload. Combined with the advantages of superconducting receiving technology, it establishes the circuit model of single-antenna receiving system. Secondly, it sets the relevant parameters reasonably according to the application requirements and simulates the performance of conventional devices and superconducting devices accurately, then finishes the comparison. simulation results show that the application of superconducting receiving technology can effectively improve the sensitivity of satellite payload. Under the condition of keeping the gain basically unchanged, the noise coefficient and suppression performance are improved after adding the superconducting receiver. © Springer Nature Singapore Pte Ltd 2021.

关键词： Superconducting devices

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Enhancement of the Diffraction Efficiency on Volume Holographic Gratings by Silver Nanoparticles 3

Enhancement of the Diffraction Efficiency on Volume Holograp...

引用

3rd international conference on circuits, system and simulation, iccss 2019

作者： Wang, Xiaodie Zhu, Zhuoya Qiu, Yunping Gao, Wanli Lei, Wei Zhang, Xiaobing Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and Engineering Southeast University Nanjing China

ISBN: (纸本)9781728136578

The diffraction efficiency of volume holographic gratings is one of the main factors of holographic imaging quality. A volume holographic grating is prepared by interference of two light beams and coupled with silver nanoparticles to improve the diffraction efficiency. The simulation was carried out with FDTD Solutions software. In TE mode, the diffraction efficiency before and after grating coupling is basically unchanged;while in TM mode, the diffraction efficiency is improved by 6% and the center wavelength is unchanged. The experimental results are also consistent with the simulation. The relative increase rate τ of the coupling grating diffraction efficiency in TM mode is 6%16.2%. Diffraction enhancement is due to the local plasmon resonance characteristics of silver nanoparticles. © 2019 IEEE.

关键词： Metal nanoparticles

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Portable Circuit Design Based on SERF Atomic Magnetometer 3

Portable Circuit Design Based on SERF Atomic Magnetometer

引用

3rd international conference on circuits, system and simulation, iccss 2019

作者： Yu, Feng Cao, Yanpeng Tang, Yongming Joint International Research Laboratory of Information Display and Visualization School of Electronic Science and Engineering Southeast University Nanjing China

ISBN: (纸本)9781728136578

In this design, we realized the control of SERF atomic magnetometer from the perspective of circuit, which involves the abstraction of model and equivalent substitution. To achieve portability and miniaturization, we realized the functional replacement of the corresponding instrument with a custom-made PCB. Experiment result showed that we have completed the whole process of magnetic field measurement. This provides a proof of principle for miniaturization and portability of SERF atomic magnetometer. The sensitivity of atomic magnetometer estimates 200pT/Hz1/2. In the future, we need to optimize the circuit platform to increase the sensitivity of atomic magnetometer. © 2019 IEEE.

关键词： Atoms

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A New Hyperchaotic system and Its Point Multiplication Combination Synchronization

A New Hyperchaotic System and Its Point Multiplication Combi...

引用

IEEE international conference on circuits and systems (ICCS)

作者： Jie Fang Minghao Jiang Yin Zhang Wei Deng Zhengzhou University of Light Industry Zhengzhou China

ISBN: (纸本)9781665429634

This paper constructs a new 7-dimensional hyperchaotic system. The hyperchaotic system has two positive Lyapunov exponents and rich chaotic dynamics. Based on the Matlab simulation software, the dynamic behavior of the hyperchaotic system is analyzed, such as phase diagram, dissipativity, equilibrium point, Lyapunov exponent, etc. The simulation results show that the system can produce periodic orbits, chaotic attractors, hyperchaotic attractors and other rich dynamic behaviors with changes of parameters. According to the vector dot product operation, a new point multiplication combination synchronization method is defined. Based on the Lyapunov stability theorem, a nonlinear controller is designed to realize point multiplication combination synchronization between two drive systems and one response system. Numerical simulations of the new hyperchaotic system verify the correctness of the theoretical analysis.

关键词： circuits and systems simulation conferences Numerical simulation Software Orbits Nonlinear dynamical systems

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Analysis of desulfurization characteristics in coal-fired power plant by numerical simulation and computer simulation 3

Analysis of desulfurization characteristics in coal-fired po...

引用

3rd international conference on Electrical, Communication and Computer Engineering, ICECCE 2021

作者： Zhang, Lei Feng, Fei Shi, Xixi Dong, Zunjiu School of Intelligent Manufacturing Nanjing Polytechnic Institute Nanjing China School of Architecture and Art Design Nanjing Polytechnic Institute Nanjing China Utility BASF-YPC Company Limited Nanjing China

In this paper, the spray tower of a wet flue gas desulphurization system in a coal-fired power plant is studied. The flue gas and slurry droplet are two-way coupled with Euler-Lagrange method. The heat and mass transfer and the ion reaction in SO2 removal are also considered. The results show that the error between simulation removal efficiency and practical value is within 5% under the above models. Adjusting liquid-gas ratio and opening spray layer are beneficial to the SO2 removal, and the optimal liquid-gas ratio is 16 L/m3. Balance gas velocity is needed, because an overlarge velocity will significantly reduce removal efficiency. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Coal fired power plant

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Design and realization of trunk amplifier at 2.5–2.6 Ghz 3rd

Design and realization of trunk amplifier at 2.5–2.6 Ghz

引用

3rd international conference on Wireless Communications and Applications, ICWCA 2019

作者： Li, Shiwen Li, Licong Department of Electronics and Information Engineering Heyuan Polytechnic HeyuanGuangdong China Shenzhen Jiams Technology Co. Ltd. ShenzhenGuangdong China

ISBN: (纸本)9789811558788

In view of the difficulty of gain control and the problem of self-excitation, a trunk amplifier with automatic gain control and anti-self-excitation is proposed. The system has a high operating frequency, with an uplink operating frequency band of 2500–2570 MHz, a downlink operating band frequency of 2620–2690 MHz, a downlink gain of 45 dB, an uplink gain of 55 dB, a passband ripple of less than 6 dB, a noise coefficient of less than 6 dB, and a voltage standing wave ratio (VSWR) of less than 2. We introduce the main circuits of the system, which includes low-noise amplifier (LNA) circuit, power drive amplifier circuit, power amplifier (PA) circuit, automatic gain control (AGC) circuit, and surface acoustic filter (SAW) circuit. Then, we carried out production and testing of the system. The test results show that the system basically meets the expected requirements. At the same time, it has the characteristics of low cost, controllable gain, and anti-self-excitation. It has great advantages in reducing operation and maintenance costs. © Springer Nature Singapore Pte Ltd 2021.

关键词： Timing circuits

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The Experiment and simulation Calculation Study on SEU Hardened Effect of Flash FPGA 3

The Experiment and Simulation Calculation Study on SEU Harde...

引用

3rd international conference on circuits, system and simulation, iccss 2019

作者： Li, Xiaoliang Zhang, Hongwei Mei, Bo Li, Pengwei Luo, Lei Yu, Qingkui China Academy of Space Technology Beijing China

ISBN: (纸本)9781728136578

For Flash FPGA used in space, Single event upset (SEU) will happen caused by the high energy particle. The Mechanism of SEU and the measures of device hardened have been introduced. SEU hardened design is done for BRAM and register of a Flash FPGA. Single event effect test is performed to verify the measures. It shows the SEU cross section reduces 2 orders and 75% for BRAM and register, respectively. Based on the integral method between LET flux spectrum and SEU cross section, SEU rate is calculated for different orbits. It reduces 4-5 orders for hardened BRAM and 2-3 orders for hardened register. © 2019 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Heavy ion-And Proton-induced SEU simulation and Error Rates Calculation in 0.15um SRAM-based FPGA 3

Heavy ion-And Proton-induced SEU Simulation and Error Rates ...

引用

3rd international conference on circuits, system and simulation, iccss 2019

作者： Sun, Yi Zhang, Hong-Wei Wei, Zhi-Chao Yu, Qing-Kui Tang, Min Shen, Chen Gong, Ding China Academy of Space Technology National Innovation Center of Radiation Application Beijing China Cogenda Pte. Ltd. Su Zhou China

ISBN: (纸本)9781728136578

simulation on the SEU sensitive area shows that the SRAM cell of 0.15um FPGA has separate sensitive regions, and particles with large LET can cause upset from larger extent of areas. The area of sensitive volumes can extend beyond the boundary of the bit cell. The simulation result is compared to the measured SEU cross-sections from experiments under accelerators. Composite sensitive volume model of a 0.15um FPGA chip has been established based on the results of Fully-Physical SEU simulation, which describes the upset process more accurately. The SEU rates calculated with the RPP/IRPP model and the composite sensitive volume model are compared against data obtained from in-flight test. © 2019 IEEE.

关键词： Heavy ions

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Cold Cathode X-ray Tube with MgO Composite Gate Structure 3

Cold Cathode X-ray Tube with MgO Composite Gate Structure

引用

3rd international conference on circuits, system and simulation, iccss 2019

作者： Gao, Wanli Zhu, Zhuoya Wang, Xiaodie Zhao, Shunan Lei, Wei Zhang, Xiaobing Southeast University School of Electronic Science and Engineering Joint International Research Laboratory of Information Display and Visualization Nanjing China

ISBN: (纸本)9781728136578

In a triode field emission structure, the anode current is reduced due to the trapping of the field emission electrons by the metal gate mesh. We propose a composite structure with the MgO film evaporated on the surface of metal gate. The effect of the composite gate on the field emission of the CNTs cold cathode was studied. The cold cathode X-ray tube based on the composite gate was designed. Compared with the metal gate structure, the X-ray tube using the composite gate is stable, the anode current is greatly improved, and the electron transmittance is increased by more than 30%, which can reach 80%. It can be considered that the secondary electrons emitted from the MgO film, not only compensate the intercepted current, but also become part of the emission current, thereby improving the anode current. © 2019 IEEE.

关键词： Electrons

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Optimized Energy Extraction in Tidal Current Technology using Evolutionary Algorithm 3

Optimized Energy Extraction in Tidal Current Technology usin...

引用

3rd IEEE international conference on Artificial Intelligence in Engineering and Technology, IICAIET 2021

作者： Tan, Min Keng Loo, Chun Chong Lim, Kit Guan Ibrahim, Pungut Goh, Hui Hwang Teo, Kenneth Tze Kin Modelling Simulation Computing Laboratory Universiti Malaysia Sabah Faculty of Engineering Kota Kinabalu Malaysia School of Electrical Engineering Guangxi University Nanning China

ISBN: (纸本)9781665428996

Renewable energy is gaining more popularity recently. Tidal currents are driven by two different connected bodies trying to equalize their level differences, hence there will be a flow of water from the high-pressure head to the low-pressure head. It is this kind of water flow that makes tidal current suitable for power generation. The main advantage of tidal power is that it can be forecasted easily. Aside from that, sea water has higher density as compared to air, therefore for the same amount of power, the power can be generated at a lower speed. The tidal current model is composed of a permanent magnet synchronous generator, tidal velocity profile, and another two sub-systems. This model is simulated in Matlab. The resultant tidal velocity is made up of 5 different partial tides. The tidal current turbine model is tested with different inputs of pitch angle and tidal current speed. The results show that the maximum generated output power is 295kW when the pitch angle is 2.77°. Furthermore, the higher the tidal current speed, the higher the generated output power. Aside from that, as the pitch angle is gradually increased while keeping the tidal speed constant, the power coefficient will decrease. Maximum Power Point Tracking algorithm which is based on Perturb and Observe (PO) is used to locate the maximum power coefficient of the system. It can track the maximum power coefficient successfully but there will be oscillation at the steady state. Cuckoo Search via Levy Flight is able to overcome this problem as there will be no oscillation at steady state and this can prevent power loss. The convergence of Cuckoo Search via Levy Flight is two times faster than PO. © 2021 IEEE.

关键词： Flow of water

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