DOCSLIB.ORG

Applications of Electrical Resolvers

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Applications of Electrical Resolvers Downloaded from http://www.everyspec.com MI1-HDBK-218 1 June 1952 DEPARTMENT OF THE ARMY TM 700-5990-1 MILITARY STANDARDIZATION HANDBOOK APPLICATIONS OF ELECTRICAL RESOLVERS m Downloaded from http://www.everyspec.com HEADQUARTERS, DEPARTMENT OF THE ARMY WAS1llNGTOS.25,D,C.,17 ~U@ 1.96%’ T.M 700-5990-1ispublishedfortl]eme of Illconcerned. IIYORDEROF THE SECRET+W OF ml~ AImY: “G.H. DECKER, (+xwa[,UnitedStatexArmy, WJici,l]:~ Clli.fof.Staff. .J.C. Ii.iMBERT, ., Major (%wnd, UnitedStatesArmy, TILe.4djutmtGeneral, ● Downloaded from http://www.everyspec.com M1’L-ROBK-218 ● 1 June 1962 DEFENSE SUPPLY AGENCY WASRTNGT2N 25, D.C. I MIL-RDBK Appliostionsof Electrical Reeolvers 1. This handbook hae been approved by the Department of Defense for uee by the Departmentsof the Arqy, the Navy, and the Air Force. I 2. Th accordancewith establishedprocedure,the Standardization Division has designatedOrdnance Corps, &reau of Naval Weapons, and Air Reeearch and Development Comnand, respectively,ae Aq-Navy-Air Force CuL+tOdimSof this handbook. 3. This handbook ie intended ae a guide to promote use of standards end etendardpractioes in the applicationof electrical resolversby the Departments of the Army, the Navy, end the Air Force. b. Recommendedcorrections,additions,or deletioneshould be addressed to the StandardizationDivision, Defense Supply Agency, Washington 25, D.C. ● Downloaded from http://www.everyspec.com MCL-WDBK-218 ,0 1 June 1962 I FOREWORD ,- This hemdbook is intended to help implementthe Department of Eefense standardizationprogrsm as it affects precision electricalreaolwn%. Re- solvers, their designationsewi terminologies,are defined in accordance ,. with militery specificati0n9. With eventual complianceby manufacturersto the proposed specifications,this handbook should serve as a guide to the standardizationof resolver applicationsand practices;to this end, the I fundamentalsand tlheoryof resolvers are briefly reviewed,providing engi- neers end designerswith a convenientreferenceto the mltiple capabilities of the resolver. I ● . I iii Downloaded from http://www.everyspec.com MIL-RDBK-218 ● 1 June 1962 i CONTKNTS 1 DESCRIPTION 1 1.1 SCOFR OF RANDBOOK 1 1.2 DEFINITIONOF A PJ+SOLVER 1 1.3 CONSTRUCTIONOF A RESOLVKR 1 1.3.1 General. 1 1.3.2 Housing 1 1.3.3 Stator 1 1.3.4 Rotor 1.3.4.1 Ball Bearings 1.3.4.2 Lubricants 1.3.5 Distributionof Windings 1.3.6 CompensatorComponents 2 FUNDAMENTALS 5 2.1 GENERAL 5 2.2 RESOLVER EMPI.OYM?JIT 5 ,, 2.3 RESOLVER ZERO 7 2.3,1 Rotor-Exeited Resolvers 7 2.3.2 Stator-ExcitedResolvers 7 2.4 BASIC OPERATION 8 2.4.1 Two-WindingResolver 8 2.4.2 Three-WindingResolver 9 2.4.3 Four-WindingResolver 9 THEORY OF OFERATION 11 GENXRAL 1-1. 3.2 RESOLVER EQUIVALENT CIRCUIT 11 I FRINCIPALTYPES OF INFJTS 12 3:.1 Resolver Used for IiataTransmission 12 3.3.2 Resolver Used as a ComputingDevice 12 3.3.2.1 Sine-WaveVoltages in Phase 12 3.3.2.2 Sine-WaveVoltages Shifted 90 Degrees 12 3.3.2.3 Square-WaveVoltages 12 3.3.2.4 Sawtooth Voltages 12 3.4 STA’IX)RAND ROIOR R2SISTANCFS 12 v Downloaded from http://www.everyspec.com MIL-HTISK-218 1 June 1962 RESOLVER ERROR 13 ;:; .1 Function Error 13 3.5.2 InteraxisError 14 3.5.3 ProportionalVoltage Error 14 3.6 ROTOR ELECTRICALBAL4NCE 14 3.7 WINDING COM.FENSATION 14 3.7.1 Schematic Circuit 14 3.7.2 Equivalent Circuit 15 3.7.3 Phase Relations 15 CONSIDERATIONSOF F&50LVSR LoADING 17 %1 Resistive emd CapacitiveLoading 17 3.9 EFFECT OF TEMPERATORE 17 3.10 WINDIIKISWITROUT COMPENSATION 17 3.10.1 Phase Shift Iue to TemperatureVariations 17 3.10.2 TransformationRatio Xe to TemperatureVariations 17 b 3.11 TRANSFORMATIONRATIO 18 ● 3.12 TEMPERATURECOMPENSATION 18 3.12.1 Current Feedback 18 3.12.2 Effect of Loading 19 3.13 FREQUENCY RESPONSE 19 3.13.1 Stator-to-RotorResponse lg 3.13.2 Stator-to-CompensatorRes~nse 20 3.13.3 Carrier OperationsWith Winding Compensation 20 3.13.k Carrier Operatfons Without Winding Compensation 20 3.14 NULL VOLTAGE 20 3.15 HARMONIC DI.W)RTION 21 3.16 EFFECTS OF DIRECT CURRENT 21 3.17 !&?i?aTINGPROCEWRES 21 3.17.1 General 21 3.17.1.1 Mechanical.Positioningof Rotor a 3.17.1.2 Test Circuit 21 3.17.2 Tmnsform.atlonRatio 21 3,17.3 Ehction Error ‘ 2’2 3.17.4 Null Voltage 22 3.17.5 Phase Shift 22 3.~7.6 Frequency Response 22 0 vi Downloaded from http://www.everyspec.com MIL-HDSK-218 1 June 1962 4 APPLICATIONS 24 4.1 GENZRAL 24 4.2 TYPICAL SYSTE~ 24 4.2.1 Automatic Control Syaterns 24 4,2.1.1 She Computation 24 4,2.1.2 Conversion0? Polar Coordinates 25 4.2.1.3 Vector Addition 25 ,. 4.2.1.4 Conversionof Rectwgul.arCoordinates 25 4.2.2 Analog Computers 25 4,2.2.1 ReciprocalOperation 27 4.2.2.2 Rotation of RectangularCoordinates 2a 4,2.3 Data Transmission 29 4.2.4 Phase Shifters 4.2.5 Radar Sweep Resolution : 5 TYPICAL SYNCHRO RESOLVERS 33 5.1 GEiW+AL 33 5.2 RESOLVERWITH ‘IWOEXCITED STATOR WINDINGS CONNEC’IRD 33 IN SERIES AND TWO RCTOR WINDINGS 5.2.1 Function 33 “o 5.2.2 Systems in Which Employed 33 5.3 RESOLVER WITH ‘IWOEXCITED ROTOR WINDINGS CONNECTED .33 IN SERIES AND TWO STATOR WINDINGS 5.3.1 Iluu?cion 35 5.3.2 Systems in Which Employed 35 5.4 RXSOLVER WITH ONE EXCITED STATOR WINDING, OM SHORTED 36 STATOR WINDING, A COMPENSATINGRESISTOR,AND TWO ROTOR WINDING-S 5.4.1 Fnnction 36 5.4.2 Systems in Which Employed 36 1. ?, 5.5 RESOL~ WITH TWO EXCITED S!l!ATORWINIXINGSAND ‘IWOROTOR WINDINGS d 5.5.1 FLlnction 1- 5.5.2 Systems in Which Employed 36 I 37 5.6 ~, RFSOLVER WITH TWO EXCITED S’IA!TORWIl,YDINr~, TWO COMPENSATINGWINDINGS, AND ‘IWOROTO,RW“~~l~ 37 1. 5.6.1 Punction ~ 5.6.2 Systems in Which Employed :; 0,. Downloaded from http://www.everyspec.com MIL-RDBK-218 1 June 1962 5.7 RESOLVER WITH TWO EXCITED STATOR WIWDINGS, TWO COMPENSATINGRESISTOFS, AND ‘IWOROTOR WINDINGS 5.7..1 Function 5.7.2 Systems in Which Employed 6 PERFOF.MAWZSPECIFICATIONS 39 - 6.1 GEN-SBAL 39 6.2 CLASSIFICATION 6.2.1 Size ;; “ 6.2.2 Function 39 6.2.3 Input Impedance 39 6.2.4 me of Compensation 39 6.2.5 ExcitationFrequency 39 6.2.6 Modification 39 6.,2.7 Other Designation 39 6.3 MODE OF EXCITATION 39 6.4 DIRECTION OF ROTATION 4C 6.5 INFUT VOLTAGE 40 ● 6.6 INFIJICURRENT 40 6,7 INPOT KIWER 6.8 D-C RESISTANCE 6.9 TBANBFORM4TIONRATIO 6.9.1 Equality of the TransformationRatio 6.10 NOMINAL PRPJ3ES~ 6.10.1 Phase Shift Variation Caused By Rotation or Voltage Variation 6.11 INTERAXE ERROR 41 6.12 FUNDAMENTALNOLL VOLTAGE 41 “ 6.I.3 TOTAL NULL VOLTAGE 41 6.14 FUNCTION ERROR 41 6.15 VOLTAGE ZERO SIUFT ,NULLSPACING 41 viii Downloaded from http://www.everyspec.com Ml_L-HGRK-218 1 June 1962 6.16 FREQOENCYZERO ssmr OF NULL SPACING 42 6.17 FRICTION TORQUE 42 6.18 BRUSH CONTACT RESISTANCE 42 1. 6.~9 TEMFERATURKRISE 42 6.20 42 ~: ‘ 6.21 WEIGRT 42 6.22 INSULATIONRESISTANCE 43 ~. 7 INSTALLATION 44 ?.1 GENERAL 44 7.2 PRECAOT!IOM 44 7.3 DIRE(?TMOUNTING PROM TERMINW BOARD END 4J+ ● 7.4 MOUNTING FROM SHAFT END, USING ADAPIER ASSEMSLY 44 7.5 MOIJiTCINGFROM TERMINAL ROARD END, USING ADAPI!ERASSEMSLY 46 7.6 MOUNTING FROM SRAFT END, USING AIMUBTA.BLECIAMPING DISK ASSEMBLY 46 7.7 MOUNTING FROM TEPJICNAT-BOARD END, USING ZEROING RING 47 t 7.8 MOUMTNG A GEAR ON A R2i30LvER5HAFT 47 7.9 ELWTRICAL CONNECWI.ON, 49 1 ~ 8 PREFERRED OR STANTMRD HARI?JAFJ? 50 8.1 GENERAL 50 8.2 CI&@HTG ASSEMSLY w ,: “ 8.3 CIAM?ING DISK ASSEMSLY 50 8.4 GEARED-mR ADAPTER ,- l:’ 8.5 ZEROING RIIW2 8.6 PINION WRENC~ 51 1- e,. ix 1 — Downloaded from http://www.everyspec.com MIL-RDBK-218 1 June 1962 FIGURES Figure Page 1 1 ElectricalResolver,Assembled 2 1= 2 Major Componentsof an Electrical Resolver 3 Stator and Rotor Laminations 3 ; StandardizedFour-WindingResolver, Schematic Diagram 5 Vector Diagrsmm for Stsndardized Resolvers 1’ 2 Two-WindingResolver, Schematic Diagrzm ‘ : 7 Three-WindingResolver, Schematic Diagram 9 8 Four-WindingResolver, Schematic Diagram 10 9 Standard Resolver Equivalent Circuit 11 Lo 1 Typical Angular Error in Resolver Shaft Rotation 13 l-l Resolver with Winding-CompensatedStator, 15 Schematic Diagram 12 Equivalent Circuit for Resolver with CompensatingWinding 16 13 Test Circuit for Measuring TransformationRatio, 18 I Function Error, Null Voltage, and Phase Shift 14 Typical Resolver Frequency Response 19 15 Right-TriangleComputationswith ~ Three-WindingResolver 24 16 Vector Addition and CoordinateConversionwith a 26 I g Four-WindingResolver 1’7 ReciprocalFunctions with a Three-WindingResolver 27 18 Rotation of Rectsng.da.rCoordinates 28 19 Data Transmission 29 , 20 Phase Shifting with a Four-WindingResolver a Frequency Response for a Widebemd Resolver z 22 Radar Range Sweep Resolutionwith a Four-WindingResolver 32 23 Resolver with TWO Excited Stator Windings Connected in 34 ~ Series end Two Rotor WWiings Connected in Series 24 Resolver with Two Excited Rotor Windings Connected in 34 Series and Two Stator Windings 25 RepresentativeControl System for Prscision Bombing 35 1- = 26 Resolver with One Excited Stator Winding, One Shorted 36 Stator Winding, a CompensatingResistor, snd Two Rotor Windings 27 Resolver with Two Exciter Stator Windings and TWO 37 Rotor Windings ~. 1’ “ 28 Resolver with Two Excited Stator Windings, TWO CompensatingWindings, and Two Rotor Windifigs 29 Resolver with Two Excited Stator Windings, Two 38 CompensatingResistors,and Two Rotor Windings ! 30 Resolver Mounted Directly from Terminal Board End 45 31 Resolver Mounted with Adapter Aesersblyfrom Shaft End 32 Resolver Mounted with Adapter Assembly from Terminal 2 Board End ‘a xi Downloaded from http://www.everyspec.com MIL-HDBK-218 1 June 1962 Figure Page 33 Resolver Moumted with Clamping Disk from Shaft End 47 34 Resolver Mounted with Zeroing Ring from Terminal 48 Board End 35 Mounting of Gear on Resolver Shaft with Adapter 36 Clamp Assemblies Adjustable Disk Assembly 3 Geared-ToothAdapter Zeroing Ring % Pinion Wrenches 41 Socket Wrench 42 Shaft Hardware ● xii Downloaded from http://www.everyspec.com MIL-HDBK-218 1 June 1962 I SECTION 1 DESCRIPITON 1.1 Scope of Handbook.
Load more

Recommended publications
  • 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.
    [Show full text]
  • 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.
    [Show full text]
  • 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.
    [Show full text]
  • The Design of Linear Servo-Mechanisms Having Prescribed Transient
    THE DESIGN OF LINEAR SERVO-MECHANISMS HAVING PRESCRIBED TRANSIENT RESPONSES WITH AN EXPERIMENTAL INVESTIGATION INTO TILE PREDICTION OF TRANSIENT RESPONSE FROM FREQUENCY RESPONSE. PART I . REVIEW OF BASIC THEORY. Page No. Chapter 1. Introduction. 1 2. Transient Analysis of Linear Systems. 7 3. Frequency Analysis of Linear Systems. 25 4. Stability Criteria. 38 5. Criteria of Relative Stability. Design Procedures. 57 PART I I . THE DESIGN OF LINEAR SERVO-MECHANISMS HAVING PRESCRIBED TRANSIEN T RESPONSES. Introduction. 79 A Chapter 6. The Design of ^?(p) Transfer Functions. 80 7. Numerical Work Illustrating the Use of the (A) Design Charts. 107 6i 8. The Design of g(p) Transfer Functions. 122 9. Use of th e 7>tp) Design Charts. Comparison of Qo(p) and* . (P) Methods. 133 &l er ProQuest Number: 13838566 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a com plete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest ProQuest 13838566 Published by ProQuest LLC(2019). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States C ode Microform Edition © ProQuest LLC. ProQuest LLC. 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106- 1346 PART I I I . EXPERIMENTAL INVESTIGATION OF TRANSIENT AND FREQUENCY RESPONSES OF METADYNE SERVO-MECHANISM. Page No. In tro d u ctio n .
    [Show full text]
  • Analysis and Synthesis of Precision Resolver System
    ANALYSIS AND SYNTHESIS OF PRECISION RESOLVER SYSTEM NAY LIN HTUN AUNG (B.Eng, YIT, M.Eng, NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE 2015 DECLARATION I hereby declare that the thesis is my original work and it has been written by me in its entirety. I have duly acknowledged all the sources of information which have been used in the thesis. This thesis has also not been submitted for any degree in any university previously. NAY LIN HTUN AUNG 01 DEC 2015 Acknowledgements First and foremost, I would like to express my gratitude to my co-supervisor, Adjunct Associate Prof. Bi Chao from Data Storage Institute, for his guidance, in-depth knowledge, support and encouragement during the course of this work. I would also like to thank my main supervisor, Associate Prof. A. Al. Mamun from department of Electrical Computer Engineering, National University Singapore, for his valuable suggestions and critical review of my work. I would like to thank for all the help I have received from my colleagues, Mr. Lim Choon Pio, Dr. Jiang Quan, Dr. Lin Song, Dr. Hla Nu Phyu and Dr. Yu Yinquan, from the motor team in Data Storage Institute, who helped me one way or another. Special thanks go to my wife, Ma Tin Lay Nwe, mother of my lovely daughter, Khaing Nay New, for her consistent support and encouragement till I complete this dissertation. I wish to acknowledge the opportunity of pursuing a PhD by providing tuition fee support and a yearly book allowance in the form of Scientific Staff Development Award (SSDA) offered by Agency for Science Technology and Research (A*STAR) .
    [Show full text]
  • Synchro/Resolver Conversion Handbook
    SYNCHRO/RESOLVER CONVERSION HANDBOOK 105 Wilbur Place, Bohemia, New York 11716-2426 For Technical Support - 1-800-DDC-5757 ext. 7771 Headquarters - Tel: (631) 567-5600, Fax: (631) 567-7358 United Kingdom - Tel: +44-(0) 1635-811140, Fax: +44-(0) 1635-32264 France - Tel: +33-(0) 1-41-16-3424, Fax: +33-(0) 1-41-16-3425 Germany - Tel: +49-(0) 8141-349-087, Fax: +49-(0) 8141-349-089 Japan - Tel: +81-(0) 3-3814-7688, Fax: +81-(0) 3-3814-7689 World Wide Web - http://www.ddc-web.com FOURTH EDITION UPDATED 03/2009 ii PREFACE The Synchro/Resolver Conversion Handbook is designed as a practical reference source. It discusses the theory of operation of data converter products (synchro, resolver, and linear variable differential transformer [LVDT]), performance parameters, and design factors for typical applications. The subject matter and appli- cations are chosen to be those of greatest interest and concern for the designers, systems engineers, and systems operators with whom DDC has worked over the years. The text treats both DDC’s own approach to shaft encoding and other generally accepted techniques. Because various points of view are presented, the Handbook has served well as a teaching aid over the years. Our first Synchro Conversion Handbook was conceived in 1973 during a series of technical seminars con- ducted at DDC. It was the first integrated reference source on synchro/resolver data converters. Now after 30 plus years, this hardcopy book is released as an electronic file. Since 1968 DDC has been the leader in new product development in the field of synchro/resolver convert- ers.
    [Show full text]
  • Novel High Accuracy Resolver Topology for Space Applications
    sensors Article Novel High Accuracy Resolver Topology for Space Applications Jon Santiso-Zelaia * , Gaizka Ugalde , Fernando Garramiola , Ion Iturbe and Izaskun Sarasola Faculty of Engineering, Mondragon Unibertsitatea, 20500 Arrasate-Mondragon, Spain; [email protected] (G.U.); [email protected] (F.G.); [email protected] (I.I.); [email protected] (I.S.) * Correspondence: [email protected]; Tel.: +34-600-043-236 Abstract: In recent years, the space industry has experienced a significant change mainly due to the incursion of private companies, which has shaken up the sector. This new situation allows for a reduction regarding the reliability of conventional instrumentation for space while reducing the development time and manufacturing volume. Consequently, even though it has been typical to use equipment that was previously tested in space, this could be the right moment to introduce new technologies due to the previously mentioned reasons. One of the interesting technologies with great potential is the rotary sensor in applications with motors. Historically, the resistive potentiometer has been the most used due to its simplicity and robustness; however, it has several drawbacks. Due to this, the aim of this paper is to identify an interesting rotary sensor. Hence, in this article, different sensor types are studied. Then, we review the literature regarding resolvers in order to find the best topology. We designed and compared different single speed absolute position resolvers to find the ones that offered the best results. In this process, a novel resolver topology was designed that improved on the performances of any other studied topology. Keywords: resolver; rotary sensor; high accuracy sensors; resolver topologies; wound rotor; variable Citation: Santiso-Zelaia, J.; Ugalde, G.; Garramiola, F.; Iturbe, J.; Sarasola, reluctance; space; electromagnetic sensor I.
    [Show full text]
  • Electrical Engineering Dictionary
    term effect, and should not be confused with image retention, image burn, or sticking. lag circuit a simple passive electronic cir- L cuit designed to add a dominant pole to com- pensate the performance of a given system. A lag circuit is generally used to make a system L-band frequency band of approximately more stable by reducing its high-frequency 1–2 GHz. gain and/or to improve its position, veloc- ity, or acceleration error by increasing the L-L See line to line fault. low frequency gain. A nondominant zero is included in the lag circuit to prevent undue label a tag in a programming language destabilization of the compensated system by (usually assembly language, also legal in C) the additional pole. that marks an instruction or statement as a possible target for a jump or branch. lag network a network where the phase angle associated with the input–output trans- labeling (1) the computational problem fer function is always negative, or lagging. of assigning labels consistently to objects or object components (segments) appearing in lag-lead network the phase shift versus an image. frequency curve in a phase lag-lead network is negative, or lagging, for low frequencies (2) a technique by which each pixel within and positive, or leading, for high frequencies. a distinct segment is marked as belonging to The phase angle associated with the input– that segment. One way to label an image output transfer function is always positive or involves appending to each pixel of an im- leading. age the label number or index of its segment.
    [Show full text]
  • ED 136 600 FL 008 475 TITLE Chinese-English Electronics and Telecommunications Dictionary, Vol
    DOCUMENT EESUE13 ED 136 600 FL 008 475 TITLE Chinese-English Electronics and Telecommunications Dictionary, Vol. 2. INSTITUTION Air Force Systems Command, Wright-,Patterson AFB, Ohio. Foreign Technology Div. PUB DATE Jun 76 NOTE 1,000p.; For related documents, see FL 008 474-477; Portions in English may be difficult to read because the type is rather small. EDRS PRICE MF-$1.83 HC-$52.91 Plus Postage. DESCRIPTORS Automation; *Chinese; Computers; *Dictionaries; Electric Circuits; *Electronics; *English; Ideography; Reference Books; Resource Materials; Romanization; Technical Writing; *Telecommunication; Transistors; Vocabulary; Written language IDENTIFIERS China ABSTRACT This is the second volume of the Electronics and Telecommunications Dictionary, the third of the series of Chinese-English technical dictionaries under preparation by the Foreign Technology Division, United States Air Force Systems Command. Tbe purpose of the series is to provide rapid reference tools for translators, abstracters, and research analysts concerned with scientific and technical materials from Mainland China. This. dictionary coutains about 45,000 terms selected from sources pub1.i5hed in Mainland China. The terms included relate not only to genei-1 electronics, telecommunications, transistor electronics, computer technology, integrated circuits, etc., but also incorporate vocabulary from the basic sciences and the auxiliary technologies cloF,:y associated with electronics and telecommunications, such as navigation aids, automation, and television techniques. An alphabetic lookup system based en the "pinyin" spelling of Modern Standard Chinese is provided, as wel/ as a character index for users less familiar with the pinyin system. (Author/CLK) *********************************************************************** * Documents acquired by ERIC include many informal unpublished * materials not available from other sources. ERIC makes every effolt * * to obtain the best copy available.
    [Show full text]
  • This Document Was Generated by Me, Colin Hinson, from a Crown Copyright Document Held at R.A.F
    This document was generated by me, Colin Hinson, from a Crown copyright document held at R.A.F. Henlow Signals Museum. It is presented here (for free) under the Open Government Licence (O.G.L.) and this version of the document is my copyright (along with the Crown Copyright) in much the same way as a photograph would be. The document should have been downloaded from my website https://blunham.com/Radar, if you downloaded it from elsewhere, please let me know (particularly if you were charged for it). You can contact me via my Genuki email page: https://www.genuki.org.uk/big/eng/YKS/various?recipient=colin You may not copy the file for onward transmission of the data nor attempt to make monetary gain by the use of these files. If you want someone else to have a copy of the file, point them at the website. It should be noted that most of the pages are identifiable as having been processed my me. _______________________________________ I put a lot of time into producing these files which is why you are met with the above when you open the file. In order to generate this file, I need to: 1. Scan the pages (Epson 15000 A3 scanner) 2. Split the photographs out from the text only pages 3. Run my own software to split double pages and remove any edge marks such as punch holes 4. Run my own software to clean up the pages 5. Run my own software to set the pages to a given size and align the text correctly.
    [Show full text]
  • Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters)
    ANSI Y32.2-1975 CSA Z99·1975 IEEE Std 315-1975 Revision of ANSI Y32.2-1972 CSA Z99-1972 IEEE Std 315-1971 American National Standard Canadian Standard IEEE Standard Graphic Symbols for Electrical and Electronics Diagrams (Including Reference Designation Letters) Sponsor IEEE Standards Coordinating Committee 11, Graphic Symbols Secretariat for American National Standards Committee Y32 American Society of Mechanical Engineers Institute of Electrical and Electronics Engineers Approved October 31,1975 American National Standards Institute Approved October 9, 1975 Canadian Standards Association Approved September 4, 1975 Institute of Electrical and Electronics Engineers Adopted for Mandatory Use October 31,1975 Department of Defense, United States of America , I Approved September 4, 1975 IEEE Standards Board Joseph L. Koepfinger, Chairman Warren H. Cook, Vice Chairman Sava I. Sherr, Secretary Jean Jacques Archambault Stuart P. Jackson William J. Neiswender Robert D. Briskman Irving Kolodny Gustave Shapiro Dale R. Cochran William R. Kruesi Ralph M. Showers Louis Costrell Benjamin J. Leon Robert A. Soderman Frank Davidoff Anthony C. Lordi Leonard Thomas Jay Forster Donald T. Michael Charles L. Wagner Irvin N. Howell. Jr Voss A. Moore William T. Wintringham William S. Morgan The individual symbols contained in this standard may be copied, reproduced, or employed in any fashion without permission of the IEEE. Any statement that the symbols used are in conformance with this standard shall be on the user's own responsibility. © Copyright 1975 by the Institute of Electrical and Electronics Engineers, Inc. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, with­ out the prior written permission of the publisher.
    [Show full text]
  • Tesis T1257mbd.Pdf
    UNIVERSIDAD TÉCNICA DE AMBATO FACULTAD DE INGENIERÍA EN SISTEMAS, ELECTRÓNICA E INDUSTRIAL MAESTRÍA EN GESTIÓN DE BASES DE DATOS TEMA: Gestión de datos del análisis físico-químico y su influencia en el tiempo de entrega de indicadores de operatividad de los transformadores de distribución de la empresa INEDYC. Trabajo de Titulación previo a la obtención del Grado Académico de Magíster en Gestión de Bases de Datos AUTOR: Ing. Edwin Orlando Cholota Morocho DIRECTOR: Ing. Carlos Israel Núñez Miranda, Mg Ambato – Ecuador 2017 INDICE GENERAL DE CONTENDIDOS Portada…………..………………………………………………..……………….i A la unidad académica de titulación ...................................................................... II Autoría del trabajo de investigación ...................................................................... III Derechos de autor .................................................................................................. IV Agradecimiento .................................................................................................. XIV Dedicatoria ........................................................................................................... XV Resumen ejecutivo ............................................................................................. XVI Executive summary .......................................................................................... XVIII Introducción ............................................................................................................. 1 Capítulo I .................................................................................................................
    [Show full text]