1、O. O MIL-S-22432A L 28 November 1990 SUPExtsmm MlliS-22432 15 March 1963 This specification is approved for use by all Departments an3 Agencies of the Deptrbnent of Defense. 1. =PE 1.1 sc0l3e. This Fification mers the general requixements for servomotors. It is not cumplete in itself, ht should be u
2、sed in ConjUnction with MIL-S-81963 which will fonn an inherent part of this specification. 1.2 classification. 1.2.1 Namem=latUre. The namenclature consists of the item riam, followed by a type designation which includes a modification letter and a military part number. All servomotors hav- the sam
3、e design nomenclature should be physically, mechniCally and electrically nterchangle for all military applications. The type designation is mde up of a combination of digits and letters as explained in the folluwing paragraphs. The type designation of 26-volt Servamotors should be preceded by 1t26Vt
4、. The complete nomenclature of a size 15, 400-hertz servmtor is illustrated in Table I. NamenclatUre or new SewOmOtOr types will be assigned by the Naval Air Systems command, Department of the Navy. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of us
5、e in improving this document should be addressed to: Systems Engineering and Standardization Department (Code 53), Naval Air Engineering Cener, Lakehurst, NJ 08733-5100, by using the self-addressed Standardization Document Improvement.Proposa1 (DD Form 1426) appearing at the end of this document or
6、by letter. , AMSC - N/A FSC 6105 DISIRIBUECON STA- A. Approved for public release; distrilution is unlimited. 1 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22432A 1.2.1.1 Size. The first two digits designate the maxirmrm diameter in tenths
7、of an inch. If the diameter is not exactly a whole number of * tenths, the next higher tenth is used. 1.2.1.2 Function. The su- group of two letters (S) indicates the function is that of a servomotor. when a servomtor is included in the same frame with a ta.tion Handbcyp Tolerances and Measuring Met
8、hods for Unassembled Spur and Helical Gears (Including Metric Equivalents) (Application for copies should be addressed to the American Gear Manufac- (Non-Government standards and other publications are normally available turers Association, 1500 King Street, Suit 201, Alexandria, VA 22314. ) from th
9、e organizations that prepare or distribute the dmuments. These documents may also be available in or through libraries orother informational services.) I 2.3 Order of precedence. In the event of a conflict betwen the text of this specification and the references cited herein (except for associated d
10、etailed specifications, specification sheets, or MS standards), the text of this doczrment takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific examtion han c L“.- “-I- 2 _I - L “ 3.2 First article. When specified by the contracting activi
11、ty (see 6.3) , servmtors furnished under this specification shall be subjected to first article inspection (see 4.4) . 3.3 DesiSn and construction. . Servomotors shall be of the design, construction and physical dimensions specified (see 3.1). 3.3.1 Direction of rotation. The standard (positive) dir
12、ection of rotation of the shaft is counterclcckwise when the servomotor is viewed from the shaft extension end. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-22432A bl U MIL-S-2243224 3.3.2 Parts, mterials and processes. Parts, materials and
13、processes shall conorm to the specifications of -S-81963. Finish of the housing may be black in accordanoe with MIGC-13924, if required for a specific purpose. 3.3.3 Termination identification. When screw and solder pin terminals are specified, the tenninals shall conform to the requirements of MIGS
14、-81963. When wire leads are used, the wire for size 08, 11 and 15 ServOmOtOrS shall be Type E-22 in accordance with -16878/4, and shall be color coded in compliance with Table III. Wire leads shall be a minimum of 18 inches long and shall be tinned O. 25 inch. Identification of terminal screw, solde
15、r pin or wire lead typs shall be as specified in Table III and Figure 1 herein. !knn.hl hardware is listed in Table IV. . 3.3.4 Rated voltams. The rated voltages of a servomotor are those voltages specified in the specification sheet for the reference and control windings (see 6.4). 3.3.5 Dimensions
16、. Outline drawings for the different sizes of servomotors are included as Figures 2 and 3. Lettered dimensions for example, if the no-load speed is accepted at 98 gercent of the specified minimum value follawing vibration, it must still not be less than 98 percent of the specified minimum value foll
17、ming law impact 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M - _ IL- . MIL-S-22432A 4.3.1.2.1 shaft radial play. The maximum permissible radial play is 1.5 times the maximum value specified in the specificatlion sheet. Follawing high impact sh
18、ock, radial play shall not exceed 2.25 times the maximum value specified on the specification sheet. 4.3.1.2.2 Shaft end play. Irrespbive of the limits specified in the specification sheet, a nnimum end play of 0.0002 inch is required. ?he maximan pe;rmissible end play is l. 66 times the rnaximm val
19、ue specified in the specification sheet. Follawing high impact shock, end play shall not exceed 2.5 times the maxirmn value specifid on the specification sheet. 4.3.1.2.3 Dielectric withstandins voltaqe. Follawing high impact shcck, the whding leakage current shall not exceed 1.5 m peak maxirmrm wit
20、h 80 percent of the initial test voltage applied. 4.3.1.2.4 Insulation resistance. Following high impact shock and Znvirq been jnunediately preceded by dielectric withstanding voltage, a reduction to 25 megohms insulation resistance is permissible. 4.3.1.2.5 Electrical breakaway tome (startinq volta
21、qe) An increase of 10 percent of the specified value on the specification sheet is permitted. Following high impact shock, a minirnum start- voltage not exceeding 1.5 times the voltage specified on the specification sheet is permissible. 4.3.1.2.6 . No-load m. A.redu the rated voltage shall be appli
22、ed to the control winding and the ment consumed by the control winding shall be measured. The power consumed shall meet the requirements of 3.4.8. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIGS-22432A 4.6.9 Futver. The servamotor shall be mo
23、unted -in the S- test fixture and brought to the stabilized wating tanperature of 4.2.4. The per com by the reference winding shall be measured with the control winding “ the rated voltage applied to the control winding and the power consumed by the control windiq shall be measured and shall conform
24、 to the requirements of 3.4.9. 4.6.10 Direction of rotation, With the servomotor mounted on the standard test fixture and energized in accordance with 4.2.5 and Figure 1, direction of rotation of the shaft shall be oberved and recorded and shall meet the requirements of 3.4.10. 4.6.11 Single ha sing
25、. unless otherwise specif i e.g., 0.20, 0.40, 0.60, etc. 4.6.16 M at one-half measured stall tome. The servamotor shall be mounted on the standard test fixture and brought to the stabilized operating teEperatUre of 4.2.4. The shaft shall then be coupled to a suitable dynammeter and the control winai
26、ng energized with the rated standard test voltage of 4.2.5. A load equivalent to one-half the measured stall torque shall be applied; the speed shall be measuTed (in rpm) and shall meet the rqujrmts of 3.4.16. 4.6.17 Tenmeratwe rise. Terrrperature rise shall be conducted in accordance with MniS-8196
27、3 and shall met the requirements of 3.4.17, using the control winding for DC resistance measurmts. Both the reference and control windings shall be eneryized as specified in 4.2.5 and the rotor stalled. 4.6.18 Voltaqe sensitivitv. The servomotor shall be mounted on the standard test fixture and brou
28、ght to the stabilized operating tesnperatUre of 4.2.4. The reference winding voltage shall then be adjusted to 110 percent. . of the rated standard test voltage of 4.2.5, and the control winding shall be enmized at the rated voltage. After the shaft has reached the final no-load speed at this condit
29、ion, the control winding voltage shall be disconnected, and the shaft obseyved for single-phasing. me test shall be repeated with the reference winding voltage reduced to 90 percent of the rated standard voltage. Both tests shall be performed for each direction of shaft rotation. The reference wind*
30、 voltage shall then be returned to the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“S-22432A rated standard voltage. The test sequence shall be repeated with the control winding adjusted to 110 and 90 percent of the rated voltage and the referenc
31、e winding being removed. The sewomtor shall be considered a failure if the shaft continues to rotate longer than 15 seconds after either winaing has been disco-. 4.6.19 FYeauenc sensitivity. The servcrmotor shall be mounted on the starx%rd test fixture and brought to the stabilized operating tempera
32、ture of 4.2.4. The frequency of the standard test voltages shall then be adjusted to 105 percent of the rated value and the control winding energized with a voltage equal in amplitude to the rated standard test voltage. When the shaft has reached its final no-load speed under these conditions, the c
33、ontrol WXwcanotors shall subsequently be subjected to and shall met the requirements of 3.5.5. 4.7.6 -ance. The se.rvcmtor shall be tested to 1000 hours in accordance with the cumbination of speed conditions, ambient temperatures and shaft positions indicated in Table VIII. For approximately one-hal
34、f the time at -ch combination of tenperature, speed condition, and attitude delineated, the servmotors shall .be energized to cause the opposite shaft rotation. After completion of the 1000 hour test, the motors shall be subjected to and shall meet the requirements of 3.5.6. 4.7.7 Audible noise stru
35、crtureboMe. When required by the applicable specification sheet, -the structureborne noise test shall be conducted in acm- with MIL-S-81963 while mounted in the test fixture of Figure 6. The motor and fixture cambination shall be suspended as shown in Figure 7 in such a manner that the shaft. axis a
36、nd the top edge of the mounting plate are horizontal within 5 degrees. .After determination of the prevailing ambient noise level for the brcad, one-third octave, and lbarrclw bands with the unit unenergized, the reference winaing shall be energized with the rated standard voltage in accordance with
37、 4 2.5, and the control winding shall be energized with a standard test voltage equal to one-half the rated value. The required vibration levels shall be recoded and shall meet the requiranents of 3.5.7. 4.7.8 Salt atmmhere. When required by the applicable specification sheet, servmtors shall be sub
38、jected to the salt atmsphere test in accordance with MIPS-81963 and shall n?eet the requirements of 3.5.8. 4.7.9 Extdcsion resistance. when required by the applicable specification sheet, servmtors shall be subjected to explosion resistance in accordance with MIL-sIz)-202, Methcd 109, while be- vibr
39、ated acxmding to 4.7.2 and energized as specified in Table VIII, The semmotor shall meet the requirements of 3.5.9. Additional information on explosion resistance is given in 4.10.8 of Muis-81963. 4.8 Insmction of mckaqing. The sampling and inspection of the preswvation and packaging, packing, and c
40、ontainer marking shall be in accordance with the requirements of -S-81963. 5. PACKAGING 5.1 Packaqinq recruirmts. The requirements for packaging shall be in accordance with l4IL-S-81963. 16 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILrS-22432A
41、 (This section contains information of a general or explanatory nature that may be helpful, Mt is not mandatory.) 6.1 Intended use. The intended use for senomtors covered by this specification must be in accordanoe with -S-81963. 6.2 Acuuisition reuuire%sntS. Acquisition documents should contain the
42、 information specified in Murs-81963, and should also specify if a black finish is required for the housing. 6.3 First -article inspection. Information pertaining to first article inspedion of servamtors should be obtained as specified in MIL-S-81963. 6.4 Rated voltage and freuuenw. Normal toler- fo
43、r field pawer supplies are -I 10 percent on voltage and frequency and -I 5 percent on harmonic content. unless otherwise noted in the specification sheet, the characteristics required in the applicable specification sheets for servmtors are based upon tolerances of -I 1 percent on voltage and freque
44、ncy and -I 3 percent on. harmonic content (see 4.2.5) . Therefore, servmtor performnce characteristics may be degraded under nom1 field pawer supply tolerances. 6.5 Criteria for establishim the level of preservation and mckaqinq. The follawing criteria should be used in determining the proper level
45、of preservation-or packaging to use: to be shipped to indeterminate. destinations or stored under indeterminate conditions for redistribution anywhere. to be given multiple damestic shipments with indeterminate period of covered storage. to be shim to damestic installations for inmediate use at the
46、first receiving station. a. Level A. This level should be used for those item which are b. Level B. This level should be used for those iternS which are c. Level C. This level should be used for those items which are 6.6 Definitions. 6.6.1 Servamotor. A servomotor is a precision inaudion mtor desim
47、to operate from two indeperdent AC voltages of the same frequency. Variations of amplitude and relative th phase of the two voltages determine the direction, speed and torque of the mtor. A high torque-to-rotor inertia ratio is an intended charactey.istic of a Servaanotor . 6.6.2 Reference winding.
48、The reference winding (phase 1) of a servomotor is that windhc which is energized by a specified fixed voltage and frequency. 17 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.6.3 Control windinq. The control winding (phase 2) of a senramotor is t
49、hat winding which is energized by a control voltage with a time-phase difference of 90 electrical degrees from the voltage eneryizing the refer- winding. 6.6.4 Electrical breakaway tome. The electrical breakaway torque or minimum starting voltage of a servamotor is that voltage of the rated frequency which when applied to the control windirg causes the shaft to start and continue to rotate from any initial angular positio
