检索结果-内蒙古大学图书馆

IEEE International Conference on Control Applications Part of 2010 IEEE Multi-Conference on Systems and Control

作者： Li, W. Zhu, Z. C. China Univ Min & Technol Sch Mech & Elect Engn Xuzhou 221116 Peoples R China

ISBN: (纸本)9781424453634

In this paper an encoder/decoder pair with memory is designed for fault detection (FD) over networks. The basic idea is to estimate the support of the difference between the process measurement and the estimated one. Then by applying quantization with a uniform quantizer a symbol representing the quantization cell is transmitted. Firstly the channel without packet loss and bit errors is considered. The minimum data rate for system observability is discussed and fault detection performance is also analyzed in terms of FAR and FDR. Secondly the channel with packet loss and bit errors is discussed.

关键词： bit errors codecs decoder design encoder design error statistics fault detection over networks packet loss process measurement quantization telecommunication channels

来源：评论

学校读者我要写书评

暂无评论

design of a multicode bi-phase encoder for data transmission

引用

JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS 2006年第1期15卷 1-12页

作者： Al-Alawi, R Al-Sammak, AJ Univ Bahrain Coll Informat Technol Dept Comp Engn Isa Town Bahrain Univ Bahrain Coll Engn Dept Elect & Elect Engn Isa Town Bahrain

In this paper, we present a versatile Multicode Bi-Phase encoder (MBPE) circuit capable of encoding five different Bi-Phase line codes, namely: Bi-Phase-Level (Bi-Phi-L), Bi-Phase-Mark (Bi-Phi-M), Bi-Phase-Space (Bi-Phi-S), Differential Manchester (DM) and Inverse Differential Manchester (IDM) codes. The design methodology is based on a new definition of these codes in terms of encoding rules and state diagrams, instead of the traditional way of representing them in terms of their bit transition. The operation mode of the MBPE is set by three selection lines, which can be either hardware or software controlled. This will facilitate the process of altering the data transmission protocol without the need of changing the encoder hardware. The functionality and design of the MBPE is outlined. VHDL has been used to describe the behavior of the MBPE whose operation was verified using the ModelSim XE II Simulation tools. Implementation and testing of the MBPE on XILINX Spartan-II FPGA showed that the MBPE circuit is capable of encoding NRZ data into any of the five codes.

关键词： line codes bi-phase codes encoder design data transmission

来源：评论

学校读者我要写书评

暂无评论

A Simple Approach to design a Binary Coded Absolute Shaft encoder

引用

IEEE SENSORS JOURNAL 2016年第8期16卷 2300-2305页

作者： Das, Subir Sarkar, Tuhin Subhra Chakraborty, Badal Dutta, Himadri Sekhar Murshidabad Coll Engn & Technol Dept Appl Elect & Instrumentat Engn Baharampur 742102 India Bidhan Chandra Krishi Viswavidyalaya Fac Agr Engn Mohanpur 741252 India Kalyani Govt Engn Coll Dept Elect & Commun Engn Kalyani 741235 W Bengal India

In this paper, an optical type absolute shaft encoder coding pattern is presented. Compared with the conventional binary or gray code pattern resolution (2(n)), the proposed code exhibits two times more resolution (2(n2)). Even, to represent high density positional information of rotating object, it is required very less number of tracks. This pattern sequence is based on n-by-2 matrices of binary codes where consecutive two columns of each code represented as high-low order bits. To retrieve the encoded position from these coding patterns, an extra pulse track was added at the outside of coded tracks. Moreover, it was used for providing a synchronized clock pulse into a simple photodetector-based sequential logic circuitry;it is the decoding unit of this encoder. Thus, depending on these synchronized pulses, the proposed encoder is able to provide error free positional information for a high-speed rotating object. Eventually, in order to prove this concept, a prototype is designed and tested, where a satisfactory performance was achieved.

关键词： Optical sensor absolute encoder binary code position sensor encoder design

来源：评论

学校读者我要写书评

暂无评论

design and Development of a Novel High Resolution Absolute Rotary encoder System Based on Affine n-digit N-ary Gray Code

引用

JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY 2018年第2期13卷 943-952页

作者： Paul, Sarbajit Chang, Junghwan Dong A Univ Dept Elect Engn Mechatron Syst Res Lab Busan South Korea

This paper presents a new type of absolute rotary encoder system based on the affine n-digit N-ary gray code. A brief comparison of the existing encoder systems is carried out in terms of resolution, encoding and decoding principles and number of sensor heads needed. Using the proposed method, two different types of encoder disks are designed, namely, color-coded disk and grayscale coded disk. The designed coded disk pattern is used to manufacture 3 digit 3 ary and 2 digit 5 ary grayscale coded disks respectively. The manufactured disk is used with the light emitter and photodetector assembly to design the entire encode system. Experimental analysis is done on the designed prototype with LabVIEW platform for data acquisition. A comparison of the designed system is done with the traditional binary gray code encoder system in terms of resolution, disk diameter, number of tracks and data acquisition system. The resolution of the manufactured system is 3 times higher than the conventional system. Also, for a 5 digit 5 ary coded encoder system, a resolution approximately 100 times better than the conventional binary system can be achieved. In general, the proposed encoder system gives (N/2)(n) times better resolution compared with the traditional gray coded disk. The miniaturization in diameter of the coded disk can be achieved compared to the conventional binary systems.

关键词： Absolute encoder N-digit N-ary gray code Color-coded disk Grayscale disk encoder design

来源：评论

学校读者我要写书评

暂无评论

Algorithms for optimizing the effect of English machine translation using transformer mode

引用

JOURNAL OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2025年第1期25卷 653-668页

作者： Ma, Yan Henan Open Univ Dept Humanities & Design 124 Huanghe Rd Zhengzhou 450046 Henan Peoples R China

Despite the widespread application of the Internet and the in-depth development of globalization, English machine translation still has problems such as poor translation accuracy, long translation time, and poor ROUGE (Recall-Oriented Understudy for Gisting Evaluation) and METEOR (Metric for Evaluation of Translation with Explicit ORdering) value results. In order to better promote the improvement of English machine translation effectiveness, this article introduced the Transformer model to deeply explore the effectiveness of English machine translation. Firstly, the Transformer model structure was adjusted by integrating absolute and relative positions for position encoding. Subsequently, the encoder and decoder were designed using a multi-head attention mechanism and a feedforward neural network (FNN). The dependency weight design was achieved through the attention mechanism, and the model was pre-trained. Finally, this article also evaluated the actual performance of the adjusted Transformer model in English machine translation. The research results show that in the 5th test, the average score of the adjusted Transformer model BLEU (Bilingual Evaluation Study) reached 0.6110, the translation time was 24.90 minutes, and the average values of ROUGE and METEOR were 0.6809 and 0.6098, respectively. The research results indicate that applying the adjusted Transformer model to English machine translation is completely feasible. It can improve translation accuracy, shorten translation time, and be applied to machine translation tasks to better improve translation quality and efficiency, which is of great significance for promoting cross-cultural communication.

关键词： English machine translation transformer model attention mechanism encoder design decoder design

来源：评论

学校读者我要写书评

暂无评论

NEW design TECHNIQUE FOR 2-STEP FLASH A/D CONVERTERS

引用

ELECTRONICS LETTERS 1990年第15期26卷 1185-1187页

作者： AHMED, RE Dept. of Electr. Eng. Duke Univ. Durham NC USA

A new design method for an N-bit, two-step, flash A/D convertor is presented which requires only 2(N-1) comparators. The most significant bit is first detected which then controls the switch settings for the second st... 详细信息

关键词： 2 (N-1) comparators analogue-digital conversion design technique encoder design flash ADC most significant bit first two-step flash A/D convertors

来源：评论

学校读者我要写书评

暂无评论

A step-by-step implementation method of the bit-serial Reed-Solomon encoder

引用

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES 2005年第12期E88A卷 3672-3674页

作者： Bae, J Morikawa, H Sejong Univ Dept Informat & Commun Engn Seoul South Korea Univ Tokyo Dept Frontier Infomat Kashiwa Chiba 2778583 Japan

The Reed-Solomon code is a versatile channel code pervasively used for communication and storage systems. The bit-serial Reed-Solomon encoder has a simple structure, although it is somewhat difficult to understand the algorithm without considerable theoretical background. Some professionals and students, not able to understand the algorithm thoroughly, might need to implement the bit-serial encoder for themselves. In this letter, a step-by-step method is presented for the implementation of the bit-serial encoder even without understanding the internal algorithm, which would be helpful for VHDL, DSP, and simulation programming.

关键词： Reed-Solomon code bit-serial encoder design Berlekamp

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：