1、MIL-S-J74bA 59 999990b 0478363 8 I- MIliS-81746A 5 April 1991 SUPERSEDING MIGS-81746 (As ) 3 January 1984 This specification is approved for use by all Departmentc and Agencies of the ikpulmmt of Defense. 1. SoPE 1.1 score. kis specification covers the general requirements for integrated cervamechan
2、i zed syrichro receiver-cennsnotorc (acronym SEHvTOR(), it is not complete in itself, ht must be uced in conjunction with MIL-S-81963 which fom an inherent prk of this specification. 1.2 classification. 1.2.1 Nomenclature. ?he ncariem=latUre consists of the item me, Semtorq, follmed by a type design
3、ation including a modification letter and a part identify- nimiber. mechanically an eiectricaiiy interchangeable for ail military apy?licatiom. The type designation is indicated by a ccanbination of digits and letters. The type esigmtion of a 26-volt unit should be preceded by I126V1. Ihe carrrplete
4、 nomenclature of a size 23, 115-volt, 60- or 400-Hz SerVtorq is illuskratd in Table I. assigned by the Naval Ah System oammand, Deparhiient of the Navy. 1.2.1.1 Size. tenths of an inch. next higher tenth should be use. function of the unit is that of a Cervtorq. All units having the same nomenclatur
5、e must be Namenclature for new Servtorq typeC will be liie first two characters specify the Mxirmmi diameter in if the diameter is not a whole number of tenths, the 1.2.1.2 Function. liie sucCeeah two characters, SP, indicate the Beneficial Ccxmnentc (reccXnmenaations, additions, deletions) and any
6、pertinent data wfiich may be of use in improving this document should be adresed to the camnranduig . Officer, Naval Ah Ehgineering Center, systenic qineerirq and standardi zation Departnient, code 53, Lakehurst, NJ 08733-5100, by using the self-addressed standardi zation ccment Improvement Proposal
7、 (DD Form 1426) appearing at the end of this doc=ument or by letter. AM!X - N/A Fsc 5990 DISEUBUmON !3llm A. Unlimited. Approved for public releace; distriiXition is Licensed by Information Handling ServicesMIL-S-L74bA 59 = T99990b 04783b4 T m MIL-S-817463 1.2.1.3 SUDD IV freauw . !he sucx=eeding di
8、git or digits indicate the frequency of the input pawer a+i signal in Hertz (Hz) in accordanoe with the follawing: 60 400 60 or 400 6 4 64 1.2.1.4 Desim modification. An -case letter stAss follawing the frequency code demm the original or basic design of a standard servtozq. The first modification t
9、hat affects the external mediani cal dimencions or electrical characteristics of the basic unit will be indicated by the upper-case letter ltB1l. Succeeding design modifications should be indicate3 by IsDss, etc. , except the use of Yss, ssLss I trOst, and stQ1s is prohibited. 1.2.1.5 Part identifvi
10、ns number. The part identifying number (PIN) should consist of the letter Ws, the basic specification sheet number (not including the revision letter), an assigned dash numker, and a suffix letter designating the latest modification letter in the type designation, as sham in Table II. 2.1 Government
11、 doclmientc. 2.1.1 mec ifications, ctandards, and handbookc. nie follawing specifications, ctaridardc, and handboakc form a part of this specification to the extent specified herein. nles otherwise specified, the issues of these docxmientc are those listed in the issue of the Department of Defense i
12、ndex of specifications and standards (DODIS), and cupplement thereto, cited in the solicitation. MIL-E-54 O0 Electronic Wpment, Acimspa, General specification for MIL-W-1676814 Wire, Electrical, Foytetrafluorcethyene (FIFE) insulated, 2OO0C, 600 Volts, Ektxuded Insulation MIL-S-19500 MIL-S-20708 sem
13、immiuctor Devices, General Specification for Syndrcs, -1 specification for, and supplemental specification sheets 2 Licensed by Information Handling ServicesMIL-S-81746A 59 = 9999706 0478365 L MIGS-81746A MIJJTARY MIGS-:31746/ 1 MIGS-i31746/ 2 MLGS-81746/3 MLGSI3 1746/4 MUI-S-81963 STANDARDS MILITAR
14、Y MILr-m-454 MIL-701. MIGSID-740 . IG90406 Servtorq, Type 15Sr4A cenrtorq, Type 23ST64A sewtorq, Type 23sT4A Servtorq, Type 37ST64C Sewoccffoponents, precision instrument, Rotating, cclmmon Requirements and Tects: mal specification for Standard -1 Requhments for Electironic Wipment , Lists of standa
15、rd semicorkuctor hvices Gage, Ring, Spline (Go-NOGO) (Unless otherwise indicated, copies of federal and niilitary specifications, standards, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building #4, Section D, Pliiladelpliia, PA 191 11-5094.1 - 2.2 No
16、n-Government publications. ke folluwjng documentC form a part of this document: to the extent specified herein. spcified, the jssues of the documentC which are ID adopted are those listed in the ipme of the DODISS cited in the solicitation. otherwise specified, the issues of documents not 1.isted in
17、 the DODISS are the issues of Wie doc=umentC cited in the solicitation (see 6.2). Unless otherwise nless AMERICAN GE?a MANuFAcnlRERc ASSOCIATION (AGMA) AGMA 207*06 !both propOri=ions for Fine Pitch Involute Spur and Helical Gears Am 21100-A Gear Classification and Inspection Handbook Toleram=ec and
18、Measuring Methode for Unacsembled .Spr and Helical Gears (Including Metric Egivaients) 3 Licensed by Information Handling Services- MIL-S-8174bA 59 W 99999Ob 04783bb 3 m MIGS-8 1746.A (Application for copies should be addrecced to the American Gear Manu- facturers Ascociation, 1330 mchusetts Avenue,
19、 NW, Washington, DC 20005.) (Non-Govemment standardc and other publications are nomrally available from the organizations that prepare or distribute the do le failure. Action follming quality conformance sample failure shall be as specified in MIGS-81963. 4.7 Test methocis and examinations. 4.7.1 Vi
20、sual andmecham cal inspect ion. me servtorq shall be examined in accordam=e with MIGS-81963 and shall met the requirements of 3.7.1. 4.7.2 Radial and end nlay. Shaft radial and end play shall be tested in accordance with MIGS-81963 and shall meet the requirements of 3.7.2. 4.7.3 Tutal shaft runout.
21、mtal shaft ruIxxlt of the cmooth portion of the shaft shall be coa- in accordance with MIGS-81963 and shall not exceed the requirements of 3.7.3. 4.7.4 Dielectric withctanding . A test potential of 875 k 15 volts rmc, 60 Hz, for 115-volt units, or a 493.5 then slowly reduced (minimum tim 3 secons) t
22、o zero. The peak value of the test potential thromut this test shall not exceed 1.5 times the specified mrc test potential. The above test potential shall be used for quality conformance testing only. withstanding test that is repeate on the came unit, either during quality conformance or qualificat
23、ion testing, shall have a reduce test potential of 730 k 20 volts mis, 60 Hz, applied to 115-volt units, or 394 f 6 volts ms, 60 Hz, applied to 26-volt units. A failure shall be indicated by a winding leakage current in excecs of one miiiiampere peak or the indication of intermi arcing or discharge.
24、 Tkie failure leakage current limit of one milliampere peak shall not include that current drawn by the equipent capacity or capacitance of the winding under tests. detects winding leakage current in the presence of a surge discharge current, or test equipment that produces equivalent remits, shall
25、be employed. Immeaiately after successfully conformiq with the requirments of 3.7.4, the unit shall be subjected to the insulation resistance test as specified in 4.7.5. The test potential shall be Any dielectric Test equipnent that 14 Licensed by Information Handling ServicesMIGS-81746A 4.7.5 Insul
26、ation resistaxe. 4.7.5.1 Stator tenruna is. The insulation of the control transformer stator shall be measured by means of a device that applies 500 WC while indicating the insulation resistance. the three stator windings, strapped wether, and the housing. shall meet the requiremats of 3.7.5 herein.
27、 The measuremat shall be mde between The servtoq 4.7.5.2 U and R2 teSrnina 1s. The insulation resistance of the elec- tronics and towe mtor chcuits shall be measured by means of a device that applies 50 WC while indicating insulation resistance. measure- ment shall be made between the U and R2 termi
28、na is, strapped together, and the housing. The Cervtorq shall meet the reqrrerents of 3.7.5. 4.7.6 Paver and current. 4.7.6.1 Primarv IXSW er and current. The primary per and current to the ceyytorq shall be measured with the unit energized and stabilized as specified in 4.2.5 and 4.2.3 with the sha
29、ft under a no-load condition. measure;mentc shall be made with the servtoq mounted in the applicable standard test fixture in accordance with MIGS-81963. measurement tediniques shall be. used as required. the requirerents of 3.6.5.1 and 3.7.6.1. The True ms mews and ?he servtoq shall meet 4.7.6.2 Pu
30、ver and current at stall. The per and current to the servtorq shall be measured with the unit energized and stabilized as specified in 4.2.5 and 4.2.3. produce the highest value of per and current. mde with the servtoq mounted in the applicable standard test fixture in accordam=e with MIGS-81963. Th
31、e se.rvtoq shall meet the requirerents of 3.7.6.2. “he shaft of the se.rvtorq shall be rotate t0 The measur-ts shall be 4.7.7 Direction of rotation. The servtoq shall be electrically connected to a synchro lxanmitter in accordance with 3.6.8 as shown in Figure 4, and energized in acmrdance with 4.2.
32、5. shall be rotated, and the shaft rotation of the servtoq shall conform with the requirerents of 3.7.7. The symhro transmitter 4.7.8 Electrical error. The servtoq shall be tested for electrical error by the proportional voltage nulling method, the synchro standard/angle position indicator method, o
33、r by a method of at least equal accuracy. 4.7.8.1 Promrtional nullh method. The unit shall be connected in accordance with Figure 8. 4.7.8.1.1 Bacic setm. With the synchro bridges set at zero, the “he fh adjustment control of the inda stand shall control transmitter (al) shall be mounted in an angul
34、ar index stand in accordance with 4.2.6. be adjusted to obtain a minhum null reading on the phace-sensitive voltmeter (PSVM-1). The control transnu tter (cx2) medranically coupled to the cervtorq shaft and adjusted to obtain a minimum shaft shall then be 15 Licensed by Information Handling Services_
35、 MIL-S-8174bA 59 = 999990b O478378 T m MIGs-81746A null reading on PSvM-i!. no play or backlash between the servtorq and Q(2 shafts. reference position for this test. The mechani cal ampling shall be such that there is. This is the 4.7,8.1.2 Tect procedure. The synchro brimes shall then be set at 5O
36、, the cx1 positioned in the index stand to abtain a minimum null reading on PSVM-1, and the dial indicator of the index ctand mec;hani caily positioned to zero. After the dial indicator has been set at zero, the Qu shaft shall be repositioned, wing the fine adjustment control of the index stand to o
37、btain a minimum null reading on psvM-2. indicator of the index ctand is the gross electrical error for the 50 rotor position. The final reading, at the Oo psition, shall not exceed ,+ 45 seconds, as specified in 4.2.6. Ihe reading appearing on the dial This procedure shall be repeated at 5O kemnts t
38、hrough 360O. 4.7.8.1.3 Control tranCmi tter electrical error. The control transknitter (Crxz) used for this test shall have had its electrical error determined in accordance with the MIGS-20708 proportional voltage null method. electrical error at each position to obtain the electrical error of the
39、servtorq, of 3.7.8. mese errors shall be algebraically subtracte from the gross Ihe servtorq electrical error shall conform with the requiremnts 4.7.8.2 svnchr o standar/amle mition indicator (ApI) method. me unit shall be CO- in accordance with Figure 9. incremented in 5-degree kanents. shall be su
40、btracted from the synchro standardls setting to obtain the electrical error. electrical error of the CX is mre than 30 seconds, its error shall be algebraically subtracted from the corresponding total error to obtain the electrical error. The standard shall be At each pition, the APIIs reading The l
41、argest difference is the electrical error. if the 4.7.8.3 Alternate test methodc. If an alternate method of testhg is Eiqual accuracy shall be defined as selected, the accuracy shall be dem0nSt;rated by analysis and calibration data or by subjecting at least 5 percent of the units under test to both
42、 mthds and correlating the test data. the test ata correspnding within 1 minute at Oo rotor position (synchro zero) and 2 minutes at all other rotor positions. 4.7.9 stall tome. me servtorq shall be mounted in an appropriate test fixture and the unit energized with the specified per of 4.2.5 and sig
43、nal input of 3.6.8. After reaching the standard operating temperature specified in 4.2.3, torque shall be applied by weights cucpended by a thread attached to the rim of a pulley that has been rigidly mounted on the CeWtorq shaft. meacurement of the maximum torque, to an accuracy of f 0.10 oum=e-ind
44、-r, that does not cause pullout of the shaft. is made, it shall be in a mnner such that appreciable heating of the servto. does not have the to occur. requirements of 3.7.9. The stall torque, in oume-inches, shall be determined by If an altermate method of measurement The cervtorq shall meet the 16
45、Licensed by Information Handling ServicesMIL-S-81746A 4.7.10 servtorcr sensitivity. Tkie servtorq shall be connected to the kasic ckdt shm in Figure 8 and the reference position obtained as specified in 4.7.8.1. direction, using the fh adjustment control of the index stand to obtain theminirmmidicce
46、snib le change in the reading of psvM-2. dial indicator shall be recorded. The cx1 shaft shall then be repositioned in the opposite direction to again obtain the minimum diccemib le change in reading of PSVM-2. indicator shall be recorded. difference in reading of three successive tests performed in
47、 each direction. The CerVtorq sensitivity shall meet the requirements of 3.7.10. between the se.rvtorqs input signai and the servtorqls shaft position while the servtorq is eiectricaily driven at one rpm. 4.7.11.1 Proportiom1 nullha method. The CXl shaft shall be repeitioned in one Tkie reading of t
48、he The difference between the two readings of the dial nie sensitivity shall be the highest 4.7.11 Dvnami c error. The dynamic error shall be the difference 4.7.11.1.2 Basic sem. The unit shall be connected as shm in Figure 10. The reference transmitter CXl selected shall be a frame size 23 (see MIG
49、S-20708) and have an electrical error of less than 2 nhutes. The resolvers used in Figure 10 must have an error of 20 cecondc or less. the errors of the reference carrq?onentc exce Sine lo = .O1745 SF = 30 x .O1745 = ,00873 volts/ute 60 To calibrate the recorder for 30 minutes, rotate the cenrtorqlremlver transmitter shaft until the PSVM reads .262 volts (30 x .O0873 = .262) and set the calibration on the recorder to 30 minutes. transmitter and turn on the recorder and drive mtor. Record for at least one revolution of the se
