检索结果-内蒙古大学图书馆

Application of pole-zero cancellation circuit in nuclear signal filtering and shaping algorithm

Nuclear Science and Techniques 2021年第8期32卷 85-94页

作者： Huai-Ping Wang Jian-Bin Zhou Xiao-Ping Ouyang Xian-Guo Tuo Xu Hong Yi Liu Jie Yu You-Xian Jin College of Nuclear Technology and Automation Engineering Chengdu University of TechnologyNo.1 East 3 RoadErxian BridgeChenghua DistrictChengdu 610059China Northwestern Institute of Nuclear Technology Xi’an 710024China Engineering Research Center of Nuclear Technology Application(East China University of Technology) Ministry of EducationNanchang 330013China

In radiation measurement and digital nuclear spectrum systems,traditional nuclear signal processing circuits in nuclear electronics have been gradually replaced by digital algorithm modules with the application of highperformance programmable hardware logic devices(such as FPGA or DSP).Referring to the digital realization method of inverse RC integral circuit systems,the function of the pole-zero cancellation(PZC)circuit was analyzed,a new modified cascade equivalent model of PZC was established,and the time-domain digital PZC(DPZC)recursive algorithm was derived in detail in this *** parameters kIand k_(D)are included in the new algorithm,where kIshould match the exponential decay time constant of the input signal to realize the pole-zero compensation,while the decay time constant of the output signal can be changed with the adjustable parameter k_(D)(which is larger than the decay time constant of the input signal).Based on the new DPZC algorithm module,two trapezoidal(triangular)shaping filters were designed and *** amplitude–frequency characteristics of the output signal of the proposed trapezoidal shaping algorithm and the convolution trapezoidal shaping algorithm were compared,with fixed peaking *** results show that the trapezoidal shaping algorithm based on DPZC can better suppress high-frequency ***,based on the Na I(Tl)scintillator(u75 mm×75 mm)detector and^(137)Cs source,the effect of the k_(D)value on the energy resolution of the DPZC trapezoidal(triangular)shaping algorithm was *** experimental results show that,with an increase in k_(D),the energy resolution of the system improved and reached the maximum when k_(D)was greater than 10,and the optimal energy resolution of the system was 7.72%.

关键词： Pole-zero cancellation C–R inverse system Trapezoidal/triangular shaping Amplitude–frequency characteristics Energy resolution

来源：评论

学校读者我要写书评

暂无评论

An Efficient Parallel Computing Cnn Accelerator Based on Fpga Hardware Resources

SSRN

引用

SSRN 2024年

作者： An, Zhonghao Peng, Kexin Yang, Kailing Lin, Cheng Zeng, LingPeng Yang, Wenbo School of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu610059 China School of Computer Science and Cyber Security Chengdu University of Technology Chengdu610059 China School of Business Chengdu University of Technology Chengdu610059 China

Convolutional Neural Networks (CNNs) have achieved remarkable success in a wide range of fields, becoming one of the most widely used and powerful techniques in computer vision. Given that the model structure and convolutional operations of convolutional neural networks are significantly highly parallel, accelerating CNNs using field-programmable gate arrays (FPGAs) has become an important solution to this problem. In this paper, we propose an integrated hardware accelerator architecture based on YOLOv3-tiny (You Only Look Once version 3 tiny) with low latency and high computational efficiency. The accelerator is designed in a parallel way with input partially parallel, full parallelism between convolutional cores, partial parallelism within cores, and output partially parallelism, and utilises a dynamically configured matrix generator to complete the matrix transformation of the Generalised Matrix Multiplication (GEMM) algorithm. In order to optimise the accelerator further: firstly, we improve the original YOLOv3-tiny algorithm by adopting INT8 precision in order to increase the parallelism and reduce the memory space and bandwidth requirements. Secondly, we propose a way to map two INT8 multiplications at a time into the DSP (Digital Signal Processing), which improves the utilisation of the DSP by a factor of 2.25 for low-precision operations. As well as adding a new REQ layer to maintain INT8 while keeping the precision. Based on the experimental results, our proposed accelerator is able to achieve 42ms latency and 120 GOPS data throughput, which outperforms most of the research proposals in terms of comprehensive performance. The architecture is suitable for edge computing applications. © 2024, The Authors. All rights reserved.

关键词： Digital signal processing

来源：评论

学校读者我要写书评

暂无评论

Data-Driven Multi-Step Ahead and Long-Term Probabilistic Predictions for Automotive Fuel Cell Performance Degradation

引用

IEEE Transactions on Transportation Electrification 2025年

作者： Li, Junhao Chen, Junxiong Wang, Renkang Cao, Jishen Gao, Yan Tang, Hao University of Electronic Science and Technology of China School of Automation Engineering Chengdu610023 China University of Electronic Science and Technology of China Hydrogen and Fuel Cell Institute Chengdu610023 China

Accurate prediction of performance degradation is crucial for the timely maintenance of fuel cell. The influence of uncertain factors on automotive fuel cell makes it challenging for traditional point estimation methods to achieve reliable longterm predictive results. To address this, we have designed a datadriven probabilistic prediction model called MambaMixer, which enables multi-step ahead and long-term probabilistic prediction of performance degradation for automotive fuel cells without a mechanism model. The model first combines a dimensional-segment-wise (DSW) strategy to protect historical data. Secondly, the mamba model and multi-layer perceptron (MLP) are used to design a two-stage transform (TST) layer. Then, the decomposition strategy is used to extract multi-scale historical information, and the long-term probability prediction module is designed based on the student's t-distribution. In the prediction experiment of relative power-loss rate (RPLR), our model demonstrates superior performance in multi-step ahead prediction compared with three advanced models. In the long-term probabilistic prediction experiments, the effectiveness of the proposed algorithm is validated through multiple sets of experiments. In general, our model helps to improve the prediction performance of automotive fuel cell performance degradation, providing a new solution for data-driven model design. © 2015 IEEE.

关键词： Prediction models

来源：评论

学校读者我要写书评

暂无评论

A High-Precision Parameter Identification Method Based on Improved DFT for Sub-Super Synchronous Oscillations

A High-Precision Parameter Identification Method Based on Im...

引用

IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia)

作者： Feiyu Sun Dongsheng Cai Zhengyuan Zhang Qi Huang The College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu China School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu China School of Information Engineering Southwest University of Science and Technology Mianyang China

ISBN: (数字)9798350352290

ISBN: (纸本)9798350352306

Wind energy has been employed extensively as a renewable energy source with the aim of carbon neutrality. The power system also makes extensive use of power electronic properties and lead to the sub/super-synchronous oscillation (Sub/Sup-SO) issue, which damages equipment and jeopardizes the power system's ability to operate safely and steadily. To improve the frequency band estimation range to 100 Hz, this research use Phasor Measurement Unit (PMU) instantaneous value data to determine the Sub/Sup-SO associated characteristics. To reduce the influence of spectral leakage and the fence effect, as well as to improve the identification accuracy of the related parameters, this paper adopts the RV self-convolutional window based Discrete Fourier Transform (DFT) and the Hanning double-window based all-phase Fast Fourier Transform (apFFT) hybrid algorithm to identify the Sub/Sup-SO modal parameters. We take into account the identification accuracy in complex cases, such as non-nominal frequencies, with noise effects and multiple Sub/Sup-SO modes. The simulation results show that the proposed method has high discrimination bandwidth, high discrimination accuracy and strong flexibility.

关键词： Damping Accuracy Simulation Discrete Fourier transforms Noise Frequency estimation Phasor measurement units Mathematical models Power systems Oscillators

来源：评论

学校读者我要写书评

暂无评论

Comparative Evaluation of Several Types of Passive Damping Branches for Grid-Connected Inverters under Passivity

Comparative Evaluation of Several Types of Passive Damping B...

引用

International Conference on Power Electronics and Motion Control (IPEMC)

作者： Guangda Ma Chuan Xie Cheng Li Yang Han Weijun Wang Jianxiao Zou School of Automation Engineering University of Electronic Science and Technology of China Chengdu School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu

ISBN: (数字)9798350351330

ISBN: (纸本)9798350351347

The passive damping (PD) branches based on passive design can provide sufficient passivity compensation to the output admittance of the grid-connected inverter (GCI) at the cost of low damping loss. However, the type of passivity-based PD branch is only considered on the shunt RC branch in recent reports. This paper investigates the passivity compensation capabilities of several types of PD branches. Furthermore, design guidelines for the different types of PD branches are presented based on their passive properties and damping loss. Finally, the design example is given to verify the correctness of the proposed design guidelines.

关键词： Damping Costs Design methodology Asia Inverters Admittance Motion control

来源：评论

学校读者我要写书评

暂无评论

An Improved Convolutional Networks Model for Carbon Emission Prediction in Power Systems

An Improved Convolutional Networks Model for Carbon Emission...

引用

IEEE/IAS Industrial and Commercial Power System Asia (I&CPS Asia)

作者： Dongsheng Cai Caroline Acen Chiagoziem C. Ukwuoma Nan Zhang Wei Liu Zhenyuan Zhang Qi Huang College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu China School of Computing and Cyber Security Chengdu University of Technology Chengdu China School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu China School of Information Engineering Southwest University of Science and Technology Mianyang China

ISBN: (数字)9798350352290

ISBN: (纸本)9798350352306

In response to the imperative need for carbon reduction, tracking the carbon footprint of power systems has emerged as a critical concern. Traditional methods have struggled to accurately capture the nuances of carbon emissions, necessitating a fresh approach. To address this gap, the study introduces a pioneering deep learning-based model. We contend that the rapid advancement of deep learning offers a solution by harnessing neural network models, particularly the temporal convolutional networks (TCN) and gated recurrent units (GRU). These models are adept at handling the intricate patterns and dependencies inherent in carbon emission data, which exhibit both short-term fluctuations and long-term trends. Sequel to that, we propose a novel TCN-GRU-ATT neural network model designed explicitly for carbon footprint data. This innovative model combines TCN, GRU, and attention mechanisms to comprehensively capture both short-term variations and long-term dependencies within carbon emission patterns. Using power generation data from a gas-fired unit within the power grid as a foundation, the model calculates carbon emissions across various time intervals. Results demonstrate the model's exceptional performance, with a low Mean Absolute Percentage Error (MAPE) of 1.7123%, a Root Mean Square Error (RMSE) of 8.8436 kg/CO2, and a high Coefficient of Determination R 2 of 0.9802.

关键词： Training Neural networks Carbon dioxide Predictive models Logic gates Market research Data models Convolutional neural networks Forecasting Carbon footprint

来源：评论

学校读者我要写书评

暂无评论

Distributed Finite-Time Prescribed Performance Security Control for Unmanned Ships Utilizing the Novel Disturbance Estimator 14

Distributed Finite-Time Prescribed Performance Security Cont...

引用

14th International Conference on Information Science and technology, ICIST 2024

作者： Song, Yuhui Wang, Huanqing Liu, Siwen Li, Tieshan The School of Mathematical Sciences Bohai University Liaoning Jinzhou China The Navigation College Dalian Maritime University Liaoning Dalian China The School of Automation Engineering University of Electronic Science and Technology of China Sichuan Chengdu China

ISBN: (纸本)9798350353334

The article developed a distributed security control protocol of unmanned ships (USs) with the disturbances. To constraint the tracking errors within a predefined boundary, an infinite-time performance function and a logarithmic Lyapunov function are simultaneously introduced. Using the novel disturbance estimator, the disturbances are estimated. With the aid of the backstepping method, a distributed security controller is obtained and it is given that all the states of the system are bounded in finite time and the tracking errors can also meet preset performance requirements. Eventually, unmanned ships are given to show the utilizability of the obtained protocol. © 2024 IEEE.

关键词： Lyapunov functions

来源：评论

学校读者我要写书评

暂无评论

Multi-Task Traversing of Multiple Unmanned Surface Vehicles in Complex Marine Environment

Multi-Task Traversing of Multiple Unmanned Surface Vehicles ...

引用

2022 IEEE International Conference on Unmanned Systems, ICUS 2022

作者： Jin, Xiaozhao Zhang, Gexiang Liu, Jun Yang, Ma Shi, Binghua School of Automation Chengdu University of Information Technology Chengdu China Amovlab Chengdu Bobei Technology Co. Ltd. Chengdu China School of Information Engineering Hubei University of Economics Hubei Wuhan China

ISBN: (数字)9781665484565

ISBN: (纸本)9781665484565

This paper deals with multi-task traversing scheme for multiple unmanned surface vehicles (USVs) in complex marine environments. Inspired by membrane computing, a novel assignment algorithm that can optimize the assignment efficiency, path length and safety of multi-task traversing is proposed for multiple USVs. Comparative studies with the state-of-the-art methods demonstrate that the proposed cooperative multi-task traversing scheme has superior performance. © 2022 IEEE.

关键词： Unmanned surface vehicles

来源：评论

学校读者我要写书评

暂无评论

Impedance Compensation for Interconnection Structure with Large Inductance on PCB Using Capacitors 12

Impedance Compensation for Interconnection Structure with La...

引用

12th International Conference on Power Science and engineering, ICPSE 2023

作者： Wang, Ziren Zhang, Congzhe Yang, Shilong Gao, Ting An, Shaogeng Jin, Qiuyan Wang, Zekun China Academy of Information and Communications Technology China Telecommunication Technology Labs Beijing100045 China Southwest Jiaotong University School of Information Science and Technology Chengdu611756 China Shanghai University School of Mechatronic Engineering and Automation Shanghai200444 China

ISBN: (纸本)9798350342383

Bonding wires and via holes are widely used in print circuit boards (PCBs) to provide the connection paths for signal transmission. However, these interconnection structures may have large equivalent inductance, resulting in impedance discontinuity and signal reflection. In this paper, an impedance compensation strategy using capacitors for the interconnection structures with large inductance was proposed. Based on the size and material of the PCB, an electromagnetic field model of the PCB before and after compensation was developed. In addition, a distributed parameter equivalent circuit model was also developed to validate the electromagnetic field model. Both the signal reflection and loss of the PCB after compensation with capacitors decrease significantly. The obtained equivalent circuit model was used to predict the improvement of the signal integrity of the compensated circuit board. © 2023 IEEE.

关键词： Inductance

来源：评论

学校读者我要写书评

暂无评论

High-Speed Signal Jitter Measurement Method Based on Bit Error Rate Eye Diagram 16

High-Speed Signal Jitter Measurement Method Based on Bit Err...

引用

16th IEEE International Conference on Electronic Measurement and Instruments, ICEMI 2023

作者： Yang, Wanyu Tian, Shulin Dai, Zhijian School of Automation Engineering University of Electronic Science and Technology of China Chengdu China Longhua District Key Laboratory of Integrated In-circuit Testing Technology Shenzhen China Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Shenzhen China

ISBN: (纸本)9798350327144

In the process of high-speed serial signal transmission, the performance of the entire system is often greatly affected due to the existence of jitters. Therefore, jitter has become a key factor restricting the design of high-speed digital systems [1]. This research proposes a technique to analyze jitter components using bit error rate eye diagrams. This technique is based on the generation principle of statistical eye diagrams, combined with the classification and decomposition method of jitter, and can be used to quickly extract and analyze each component of jitter. The bit error rate eye diagram data is obtained by using an experimental platform to generate a signal with a certain inherent jitter adjustable and send it to the receiving end of the platform through self-loopback. The data is analyzed to generate the corresponding bit error rate eye diagram (also called statistical eye diagram), and the probability density function (Probability density function, abbreviated as PDF) of the signal is obtained from the statistical eye diagram data. Based on the PDF analysis and calculation of the jitter signal, the random jitter (abbreviated as RJ) and the deterministic jitter (abbreviated as DJ) are separated, and the values of each component of the jitter are obtained. Compared with the set intrinsic jitter value, the jitter value calculated by this technique is within 7% error. Compared to an oscilloscope with the same bandwidth, this technique costs and consumes far less than an oscilloscope. Compared to an oscilloscope with the same bandwidth, this technique costs and consumes far less than an oscilloscope, and the results obtained are not very inaccurate. © 2023 IEEE.

关键词： Bit error rate

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：