ED 136 600 FL 008 475 TITLE Chinese-English Electronics and Telecommunications Dictionary, Vol
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SECTION 6 POSITION and MOTION SENSORS Walt Kester
POSITION AND MOTION SENSORS SECTION 6 POSITION AND MOTION SENSORS Walt Kester Modern linear and digital integrated circuit technology is used throughout the field of position and motion sensing. Fully integrated solutions which combine linear and digital functions have resulted in cost effective solutions to problems which in the past have been solved using expensive electro-mechanical techniques. These systems are used in many applications including robotics, computer-aided manufacturing, factory automation, avionics, and automotive. This section is an overview of linear and rotary position sensors and their associated conditioning circuits. An interesting application of mixed-signal IC integration is illustrated in the field of AC motor control. A discussion of micromachined accelerometers ends the section. POSITION AND MOTION SENSORS n Linear Position: Linear Variable Differential Transformers (LVDT) n Hall Effect Sensors u Proximity Detectors u Linear Output (Magnetic Field Strength) n Rotational Position: u Rotary Variable Differential Transformers (RVDT) u Optical Rotational Encoders u Synchros and Resolvers u Inductosyns (Linear and Rotational Position) u Motor Control Applications n Acceleration and Tilt: Accelerometers Figure 6.1 LINEAR VARIABLE DIFFERENTIAL TRANSFORMERS (LVDTS) The linear variable differential transformer (LVDT) is an accurate and reliable method for measuring linear distance. LVDTs find uses in modern machine-tool, robotics, avionics, and computerized manufacturing. By the end of World War II, the LVDT had gained acceptance as a sensor element in the process control industry largely as a result of its use in aircraft, torpedo, and weapons systems. The publication of The Linear Variable Differential Transformer by Herman Schaevitz in 6.1 POSITION AND MOTION SENSORS 1946 (Proceedings of the SASE, Volume IV, No. -
Cardinal Vol
CadenceCARDINAL VOL. 34 NO. 1 | DECEMBER 2005 - FEBRUARY 2006 Design by Mike Rhodes Cover illustration by Bill Anderson CadenceCARDINAL DEPARTMENTS From the President 4 On campus 34 Athletics The Staff Cycle prototype tested . EPA awards grant . high-tech Baseball preview . basketball schedule . cross-country feats simulation benefits nursing students . Senate finance Cardinal Cadence is published by the Division of committee visits campus Arts & Culture University Advancement, Lamar University, a member of 37 Calendar poet . course toward equality . on the marquee . The Texas State University System and an affirmative 5 Dreambuilders meaning of the movies action, equal opportunity educational institution. On Dec. 22, the Montagne Center will witness the smiles and 28 Class notes Making dreams come true: Brian Sattler, Executive Editor, Director of Public Relations 40 cheers of family and friends as scores of LU seniors receive hard- A Dinner and 12 Strangers . Alumni events A report on giving Cynthia Hicks ’89, ’93, Editor won diplomas. Amid the well-deserved pomp and circumstance, Louise Wood, Writer these students will have a heightened sense of accomplishment as Chris Castillo, Writer FEATURES they celebrate this crowning achievement - despite the interrup- tion of Hurricane Rita. They, like their university, have shown incredible resilience Contributors: A lesson in vision and tenacity. Daucy Crizer, Drew Lacey, Amanda Rowell, 9 Margaret Toal, writing Academy helps superintendents see solutions The arena is also the epicenter of -
Annual Report 2007 Creating and Distributing Top-Quality News, Sports and Entertainment Around the World
Annual Report 2007 Creating and distributing top-quality news, sports and entertainment around the world. News Corporation As of June 30, 2007 Filmed Entertainment WJBK Detroit, MI Latin America United States KRIV Houston, TX Cine Canal 33% Fox Filmed Entertainment KTXH Houston, TX Telecine 13% Twentieth Century Fox Film KMSP Minneapolis, MN Australia and New Zealand Corporation WFTC Minneapolis, MN Premium Movie Partnership 20% Fox 2000 Pictures WTVT Tampa Bay, FL Fox Searchlight Pictures KSAZ Phoenix, AZ Cable Network Programming Fox Atomic KUTP Phoenix, AZ United States Fox Music WJW Cleveland, OH FOX News Channel Twentieth Century Fox Home KDVR Denver, CO Fox Cable Networks Entertainment WRBW Orlando, FL FX Twentieth Century Fox Licensing WOFL Orlando, FL Fox Movie Channel and Merchandising KTVI St. Louis, MO Fox Regional Sports Networks Blue Sky Studios WDAF Kansas City, MO (15 owned and operated) (a) Twentieth Century Fox Television WITI Milwaukee, WI Fox Soccer Channel Fox Television Studios KSTU Salt Lake City, UT SPEED Twentieth Television WBRC Birmingham, AL FSN Regency Television 50% WHBQ Memphis, TN Fox Reality Asia WGHP Greensboro, NC Fox College Sports Balaji Telefilms 26% KTBC Austin, TX Fox International Channels Latin America WUTB Baltimore, MD Big Ten Network 49% Canal Fox WOGX Gainesville, FL Fox Sports Net Bay Area 40% Asia Fox Pan American Sports 38% Television STAR National Geographic Channel – United States STAR PLUS International 75% FOX Broadcasting Company STAR ONE National Geographic Channel – MyNetworkTV STAR -
How Understanding a Railway's Historic Evolution Can Guide Future
College of Engineering, School of Civil Engineering University of Birmingham Managing Technical and Operational Change: How understanding a railway’s historic evolution can guide future development: A London Underground case study. by Piers Connor Submitted as his PhD Thesis DATE: 15th February 2017 University of Birmingham Research Archive e-theses repository This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. Managing Technical & Operational Development PhD Thesis Abstract The argument for this thesis is that patterns of past engineering and operational development can be used to support the creation of a good, robust strategy for future development and that, in order to achieve this, a corporate understanding of the history of the engineering, operational and organisational changes in the business is essential for any evolving railway undertaking. It has been the objective of the author of this study to determine whether it is essential that the history and development of a railway undertaking be known and understood by its management and staff in order for the railway to function in an efficient manner and for it to be able to develop robust and appropriate improvement strategies in a cost-effective manner. -
Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-Voltage Inverter Paper
電気学会論文誌●(●●●●●●●部門誌) IEEJ Transactions on ●●●●●●●●●●●●●●● Vol.●● No.● pp.●-● DOI: ●.●●/ieejeiss.●●.● Paper Galvanic Isolation System with Wireless Power Transfer for Multiple Gate Driver Supplies of a Medium-voltage Inverter * * * Keisuke Kusaka , Student member, Koji Orikawa, Member , Jun-ichi Itoh, Member a) ** ** ** Isamu Hasegawa , Non-member, Kazunori Morita , Member, Takeshi Kondo , Non-member (Manuscript received Jan. 00, 20XX, revised May 00, 20XX) In this paper, a gate driver supply, which supplies power to multiple gate drivers, is demonstrated. Robust isolation is required in the gate drive supplies of a medium-voltage inverter in order to drive high-voltage switching devices such as insulated-gate bipolar transistors. The proposed isolation system achieves isolation with transmission coils mounted on printed circuit boards. Furthermore, the isolation system transmits power from one transmitting board to six receiving boards. In the conventional system, the number of receivers is limited to one. In contrast, multiple receivers are acceptable in the proposed system. These characteristics help reduce the of the isolation system for the gate driver supplies. This paper presents the fundamental characteristics of the isolation system. The equivalent circuit of the proposed system can be derived by applying the equivalent circuit of a wireless power transfer system with a repeater coil. In addtion, a design method for the resonance capacitors is mathematically introduced using the equivalent circuit. It is verified that an isolation system with multiple receivers can be designed using the same resonance conditions as an isolation system with a single receiver. Moreover, the isolation system is experimentally demonstrated. It is confirmed that the isolation system transmits power with a maximum efficiency of 46.9% at an output power of 16.6 W beyond an air gap of 50 mm with only printed circuit boards. -
Daily Life for the Common People of China, 1850 to 1950
Daily Life for the Common People of China, 1850 to 1950 Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access China Studies published for the institute for chinese studies, university of oxford Edited by Micah Muscolino (University of Oxford) volume 39 The titles published in this series are listed at brill.com/chs Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access Daily Life for the Common People of China, 1850 to 1950 Understanding Chaoben Culture By Ronald Suleski leiden | boston Ronald Suleski - 978-90-04-36103-4 Downloaded from Brill.com04/05/2019 09:12:12AM via free access This is an open access title distributed under the terms of the prevailing cc-by-nc License at the time of publication, which permits any non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. An electronic version of this book is freely available, thanks to the support of libraries working with Knowledge Unlatched. More information about the initiative can be found at www.knowledgeunlatched.org. Cover Image: Chaoben Covers. Photo by author. Library of Congress Cataloging-in-Publication Data Names: Suleski, Ronald Stanley, author. Title: Daily life for the common people of China, 1850 to 1950 : understanding Chaoben culture / By Ronald Suleski. -
54Th Annual Commencement 54TH
54th Annual Commencement 54TH Brilliant Future Juris Doctor Degrees MAY 11 Doctor of Medicine Degrees JUNE 1 Master of Fine Arts and Doctoral Degrees JUNE 15 Master’s and Baccalaureate Degrees JUNE 14, 15, 16, 17 Table of Contents 2019 Commencement Schedule of Ceremonies . 3 Chancellor’s Award of Distinction . 4 Message from the Chancellor . 5 Message from the Interim Vice Chancellor, Student Affairs . 6 Deans’ Messages & Ceremonies Claire Trevor School of the Arts. 7-8 School of Biological Sciences . 9-10 The Paul Merage School of Business . 11-12 School of Education . .13-14 Samueli School of Engineering . .15-16 Susan and Henry Samueli College of Health Sciences . 17-21 School of Medicine . 18, 20 Sue & Bill Gross School of Nursing . 18, 21 Department of Pharmaceutical Sciences . .19, 21 Program in Public Health . .19, 21 School of Humanities . 22-23 Donald Bren School of Information & Computer Sciences . 24-25 School of Law . 26-27 School of Physical Sciences . .28-29 School of Social Ecology . 30-31 School of Social Sciences . 32-33 Graduate Division . .34-35 List of Graduates Advanced Degree Candidates . 36 Undergraduate Degree Candidates Claire Trevor School of the Arts. 47 School of Biological Sciences . .48 The Paul Merage School of Business . 52 School of Education . 54 The Henry Samueli School of Engineering . 55 School of Humanities . .60 Donald Bren School of Information & Computer Sciences . 63 Sue & Bill Gross School of Nursing . 67 Department of Pharmaceutical Sciences . 67 School of Physical Sciences . 68 Program in Public Health . 70 School of Social Ecology . 73 School of Social Sciences . -
Prototype of Magnetic Resolver with Hall Effect Sensors
Prototype of magnetic resolver with Hall effect sensors by Marta Arbas Cantero Submitted to the Department of Electrical Engineering, Electronics, Computers and Systems in partial fulfillment of the requirements for the degree of Electrical Energy Conversion and Power Systems MASTER DEGREE at the UNIVERSIDAD DE OVIEDO July 2020 c Universidad de Oviedo 2020. All rights reserved. Author.............................................................. Certified by. David D´ıazReigosa Associate Professor Thesis Supervisor Certified by. Daniel Fern´andezAlonso Assistant Professor Thesis Supervisor 2 Prototype of magnetic resolver with Hall effect sensors by Marta Arbas Cantero Submitted to the Department of Electrical Engineering, Electronics, Computers and Systems on July 22, 2020, in partial fulfillment of the requirements for the degree of Electrical Energy Conversion and Power Systems MASTER DEGREE Abstract The position sensors play a crucial role in the control of electric machines as they provide position feedback. In addition, in recent years the attention over them has grown due to the deployment of the electric vehicles. It is well known that there are two types of position sensors which are more widely used than others: the optical encoder and the resolver (brushless or variable reluctance). The optical encoders could provide incremental or absolute position with high accuracy. However, they have a limited range of operation temperature and low withstand of shocks and vibrations compared to the resolvers. On the other hand, the resolvers inherently provide absolute position. They also properly withstand both thermal and vibration shocks. However, the accuracy of the resolver is lower than the optical encoder one as the latter generates less noise and it does not require an ADC converter at its output. -
W3PGA Pearl Harbor Special Event
Fall is here! The Aero Aerial The Newsletter of the Aero Amateur Radio Club Middle River, MD Volume 14, Issue 10 October 2018 Editor Georgeann Vleck KB3PGN Officers Committees President Joe Miko WB3FMT Repeater Phil Hock W3VRD Jerry Cimildora N3VBJ Vice-President Jerry Cimildora N3VBJ VE Testing Pat Stone AC3F Recording Lou Kordek AB3QK Public Bob Landis WA3SWA Secretary Service Corresponding Pat Stone AC3F Webmaster, Jerry Cimildora N3VBJ Secretary Facebook Treasurer Warren Hartman W3JDF Trustee Dave Fredrick KB3KRV Resource Ron Distler W3JEH Club Nets Joe Miko WB3FMT Coordinator Contests Bob Venanzi ND3D Charles Whittaker KB3EK Website: http://w3pga.org Facebook: https://www.facebook.com/pages/Aero-Amateur-Radio-Club/719248141439348 About the Aero Amateur Radio Club Meetings The Aero Amateur Radio Club meets at 7:30 pm on the first and third Wednesdays of the month at Essex SkyPark, 1401 Diffendall Road, Essex. Meetings begin at 7:30 p.m. local time. Meetings are canceled if Baltimore County Public Schools are closed or dismiss early. Repeaters W3PGA 2 M : INPUT : 147.84 MHz, OUTPUT : 147.24 MHz, PL 123.0 W3PGA 70 Cm: INPUT : 444.575 MHz, OUTPUT : 449.575 MHz, PL123.0 W3JEH 1.25 M: INPUT : 222.24 MHz, OUTPUT : 223.84 MHz Club Nets Second Wednesday Net – 10 Meters (28.445 MHz) @ 8 p.m. Local Time Fourth Wednesday Net – 2 Meters (147.24 MHz Repeater) @ 8 p.m. Local Time Fifth Wednesday Net – 70 Centimeters (449.575 MHz Repeater) @ 8 p.m. Local Time Radio License Exams The Aero Amateur Radio Club sponsors Amateur Radio License Exams with the ARRL VEC. -
Resolvers • 2010 Ccatalog • E106 Satellite Locations: West Indies: St
ENCODERS & Dynapar Encoders & Resolvers • 2010 Ccatalog E106 RESOLVERS For additional information, contact your Dynapar representative at 1.800.873.8731 or visit our web site at: www.dynapar.com Headquarters: 1675 Delany Road • Gurnee, IL 60031-1282 • USA Phone: 1.847.662.2666 • Fax: 1.847.662.6633 Email: [email protected], [email protected] or [email protected] Satellite Locations: North America: North Carolina, South Carolina, Connecticut, Massachusetts, New York, Canada, British Virgin Islands West Indies: St. Kitts Europe: United Kingdom, Italy, France, Germany, Spain, Slovakia South America: Brazil Asia: China, Japan, Korea, Singapore © 2010 Dynapar Corp. Printed in U.S.A. • Dynapar 2010 Encoder & Resolver Catalog Innovation, Customization, Fast Delivery, and the most comprehensive encoder selection in the industry…Dynapar delivers the rotary feedback solutions customers are demanding. Dynapar is an ISO 9000 certified facility and has been manufacturing encoders in Gurnee Ilinois since 1955. Today Dynapar offers the widest selection of the industry’s most trusted brands in motion feedback control, including NorthStar heavy duty optical and harsh duty magneto resistive encoders, Acuro absolute encoders, Dynapar incremental encoders, Hengstler Euro-spec models, and Harowe resolvers. These brands serve the spectrum of heavy, industrial, servo, and light-duty applications. Innovation is engrained into the fabric of our company. At Dynapar, we pride ourselves on being at the forefront of feedback technology, making advances to our products through a detailed understanding of the voice of our customers. Dynapar pioneered the first true vector-duty hollow-shaft encoder building on our strong presence in a number of industries including steel, paper, medical, material handling and industrial motor manufacturing. -
3. Relays Contents
3. Relays Contents 1 Relay 1 1.1 Basic design and operation ...................................... 1 1.2 Types ................................................. 2 1.2.1 Latching relay ......................................... 2 1.2.2 Reed relay ........................................... 3 1.2.3 Mercury-wetted relay ..................................... 3 1.2.4 Mercury relay ......................................... 3 1.2.5 Polarized relay ........................................ 4 1.2.6 Machine tool relay ...................................... 4 1.2.7 Coaxial relay ......................................... 4 1.2.8 Time delay .......................................... 4 1.2.9 Contactor ........................................... 4 1.2.10 Solid-state relay ........................................ 4 1.2.11 Solid state contactor relay ................................... 5 1.2.12 Buchholz relay ........................................ 5 1.2.13 Forced-guided contacts relay ................................. 5 1.2.14 Overload protection relay ................................... 6 1.2.15 Vacuum relays ........................................ 6 1.3 Pole and throw ............................................. 6 1.4 Applications .............................................. 7 1.5 Relay application considerations .................................... 8 1.5.1 Derating factors ........................................ 9 1.5.2 Undesired arcing ....................................... 9 1.6 Protective relays ........................................... -
Field Wire Techniques
MHI DEPARTMENT OF THE ARMY FIELD MANUAL DEPATMENOFTH RMA TENAY1 DEPARTMENT OF THE ARMY * MAY 1956 *FM 24-20 FIELD MANUALl DEPARTMENT OF THE ARNMY No. 24-20 | WASHIGTON 25, D. C., 17 May 1956 FIELD-WIRE TECHNIQUES Paragraph Page CHAPTER 1. INTRODUCTION -------- 1-4 3 2. WIRE WD-1/TT Section I. Introduction -------------- 5, 6 5 II. Splicing ------------------ 7-11 6 III. Field-wire ties ------------- 12-22 23 CHAPTER 3. FIELD CABLES --------- 23-26 39 4. WIRE-LAYING AND WIRE-RECOVERY EQUIPMENTS --------- 27-35 52 5. POLE AND TREE CLIMBING Section I. Climbing equipment ------- 36-41 67 II. Pole climbing ------------- 42-48 77 III. Tree climbing ----------- 49, 50 88 CHAPTER 6. FIELD-WIRE LINE CON- STRUCTION Section I. Planning ----------------- 51-57 90 II. Orders and records --------- 58-62 96 III. Field-wire construction tech- niques ------------ 63-72 102 IV. Construction under unusual conditions -------------- 73-77 118 CHAPTER 7. MAINTENANCE OF F I E L D - W I R E SYSTEMS ------------ 78-84 122 8. CHARACTERISTICS OF COMMUNICATION EQUIPMENT Section I. Introduction ------------- 85, 86 132 II. Field telephones ---------- 87-92 133 *This manual supersedes FM 24-20, 4 October 1948. 380833°--56-1 1 Paragraph Page CHAPTER 8. CHARACTERISTICS OF COMMUNICATION EQUIPMENT-Con. Section III. Manual telephone switch- boards ------------- 93-96 140 IV. Field teletypewriters ------ 97-99 147 V. Telephone repeaters ----- 100-103 151 VI. Telegraph-Telephone Ter- minal AN/TCC-14 ------ 104-108 156 VII. Terminals ---------------- 109-111 162 VIII. Repeating coils ----------- 112-114 165 IX. Test equipment ----------- 115-119 174 CHAPTER 9. TELEPHONE SWITCH- BOARD OPERATION___ 120-124 183 APPENDIX I.