Modern day large power systems are essentially dynamic systems with stringent REQUIREMENTS of high reliability for the continuous availability of electricity. Reliability is contingent on the power system retaining stable operation during steady-state operation and also following disturbances. The subject of power sys- tem stability has been studied for many decades. With new developments, and there have been many over the past couple of decades, new concerns and problems arise that need to be studied and analysed. The objective of this book is a step in that direction though not ignoring the conventional and well-established approaches.
標簽： Modelling Stability System Power
上傳時間： 2020-06-07
上傳用戶：shancjb
Driven by the rapid advancement of technology and the growing need of business REQUIREMENTS, cyber communications are embedded in many physical systems. The integration of cyber and physical capabilities leads to the creation of many applica- tions with enormous societal impact and economic benefit. The emerging systems that connect the cyber-world of computing and communications with the physical world are cyber-physical systems (CPS).
標簽： Resiliency Analytics Security and
上傳時間： 2020-06-07
上傳用戶：shancjb
With all the recent hype over radio frequency identification (RFID) and the REQUIREMENTS to implement it, you might think that RFID can turn water into wine, transform lead into gold, and cure the world’s diseases. You might also be worried that RFID will enable Big Brother to track your move- ments to within a foot of your location from a satellite five hundred miles up in space. The truth is, RFID can do none of these things. In this chapter, you find out the basics of what RFID is, what forces are dri- ving RFID as a replacement for the bar code in the marketplace, and what benefits RFID can offer
標簽： ForDummies_RFID_For_Dummies
上傳時間： 2020-06-08
上傳用戶：shancjb
EMI標準，歐標，Electromagnetic compatibility - REQUIREMENTS for household appliances, electric tools and similar apparatus
上傳時間： 2021-09-28
上傳用戶：dongdong716
UL Standard for Safety for Automatic Electrical Controls for Household and Similar Use, Part 1: GeneralREQUIREMENTS, UL 60730-1Fourth Edition, Dated October 19, 2009Summary of TopicsThis new edition of UL 60730–1 is being issued to:1) Adopt IEC’s Amendments No. 1 and No. 2 of IEC 60730-1.2) Adopt UL’s proposed changes to the national differences.
標簽： ul60730
上傳時間： 2021-10-21
上傳用戶：ttalli
此為ISO 7176-21的標準，REQUIREMENTS and test methods forelectromagnetic compatibility ofelectrically powered wheelchairs andscooters, and battery chargers
標簽： iso
上傳時間： 2021-12-17
上傳用戶：
隨著光伏發電系統快速發展,以及電動汽車充電樁的普及,傳統的剩余電流保護器無法滿足實際需求。介紹了一款B型剩余電流保護器,采用磁調制剩余電流互感器和零序電流互感器采集剩余電流。根據GB/T 22794—2017標準要求,可識別1 kHz及以下的正弦交流、帶和不帶直流分量的脈動直流、平滑直流等剩余電流信號。經信號調理電路將電壓信號送到單片機進行采集和判斷。通過試驗測試,該樣機在測試精度和速度上均符合國家標準的相關要求。The rapid development of photovoltaic power generation systems and the popularity of electric vehicle charging piles make the traditional residual current protective devices unable to meet the actual demand.This paper proposed a type B residual current protective device,which uses the magnetically modulated residual current transformer and the zero sequence current transformer to acquire the residual current.According to the REQUIREMENTS of GB/T 22794—2017,the type B residual current protective device can detect sinusoidal AC residual current of 1kHz and below 1kHz,pulsating DC residual current with and without DC component,smooth DC residual current and so on.The signal processing circuit sends the voltage signal to the MCU for acquisition and judgment.Through experimental tests,the device meets the relevant REQUIREMENTS of national standards in terms of test accuracy and speed.
標簽： 電流保護器
上傳時間： 2022-03-27
上傳用戶：
本文設計了一種磁致伸縮位移傳感器,介紹了該磁致伸縮位移傳感器的測量原理,通過結構優化設計提高了儀器的性能,詳述了硬件電路設計及實現方法,完成了軟件設計,實現了高壓充電、問詢脈沖加載、時間測量及濾波等功能,并通過實驗對其性能進行了驗證。所研制的磁致伸縮位移傳感器具有測量精度高、長期穩定性好等特點,滿足了大量程、高精度、惡劣環境等測量的要求。A kind of sensor based on magnetostrictive principle is designed.The measuring principle of the magnetostrictive displacement sensor is introduced,the performance of the instrument is improved by the structural optimization design,and introduced the hardware circuit design and the realization method,completed the software design,realized the functions of the high voltage charging,inquiries pulse loading,time measurement and filtering,and its performance is verified through the experiment.The magnetostrictive displacement sensor has the characteristics of high measuring precision.The sensor meets the REQUIREMENTS of large range,high precision,poor environment and so on.
標簽： 位移傳感器
上傳時間： 2022-04-06
上傳用戶：
HDMI-Definition Multimedia Interface Specification Version 2.0This document constitutes the Version 2.0 specification for the High-Definition Multimedia Interface (HDMI Specification Version 2.0). This Specification incorporates HDMI Specification Version 1.4b by reference and defines additional and improved functionality. Mechanical, behavioral, and protocol REQUIREMENTS necessary for compliance are described for Sources, Sinks, Repeaters, and Cables.
標簽： hdmi
上傳時間： 2022-04-22
上傳用戶：
隨著科技的發展，人們在日常生活中使用的電器越來越多，電子設備的電磁兼容性（EMC）也越來越重要。所以，人們對電子設備的電磁兼容性的要求也越來越嚴格，越來越規范。而在市場競爭中，如何降低成本、減少設備體積，是各電子設備制造廠家重點研究的課題。通過對開關電源的EMI濾波電路的類別和相應的技術特點進行分析，設計出一種既能提高性能，又能降低成本的濾波電路。With the development of technology, appliances people use in their daily lives, more and more electronic devices electromagnetic compatibility （ EMC ） has become increasingly important. So, people electromagnetic compatibility REQUIREMENTS of electronic devices have become increasingly stringent, more and more standardized. The competition in the market, how to reduce costs, reduce equipment size, is the subject of the electronic equipment manufacturer focused on research. Through the technical characteristics of the respective category and the EMI filter circuit switching power supply is analyzed both designed to improve a performance of the filter circuit can reduce the cost.
上傳時間： 2022-04-23
上傳用戶：
