1、: SAE ARP*437A 65 8357340 0028LI39 3 A-4743 . .- Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-_I_=_ _ - SA RP*Li?A b5 9 8357340 0028435 C a L PRECISION CONTROL MOTORS - 400 CYCLES Irrul 4-15-58 497A
2、 ovjard 1-10-65 L -2- 2.3.6 Starting Voltage Test * ,. . I . II . . . . . . . . . . , . , . . . , . . . . . . . . . . . . . 14 2.3.7 Stall Torque Tost II . ,. . . . . I.I , . . . . . , . ,. , . , , , . . . . . . . . 15 2.3.8 fowx Test. .ll,.,.l.,.lll, 15 2.4 Environmental Coiiditions. I , . . . . ,
3、. . . , . ,. , . . . , . , . . . . ,. ., . . . 15 2.4.1. Tenipratttuile CsnWions . . a I . ,., I . , . , . . e . , . . . . . . I. . . = I , . 15 2.4.3 ViF)rtion.,., . , 16 2.4.4 Shck 4.,III ,. ., , ., ,. .v .,. 17 2.4.6 EnckmncQ . , . I . . . a ,. , . . . . , . . , . . ,. . . . , . , , , . , . . , .
4、 . . . , , . . . . . 17 2.4.0 EIiunidity .11.11.1.1,.4.1,.,.1.,., 18 2.4.7 Bungus Resistance *. . , e I . , . . . . . ., . . . . . . . . . . , . . . . . . , 18 2.4.8 Additional Requirements , . . . . . , . . . . I . . . . . . , . , . . . . . . . . . I . , . , . . . . . . 19 3. QUALITlLABSURANCE .1.1
5、1111.1111,.,.,.,. 19 3.1 Classification of Tests . . , . . . , , . , . ,. . . . . . . , . . . . , . . . . 19 3.1 Perfsrrnaiice Test8 . . . . I . . I. . . . . , . . . . .-. , , . ,. . . , , , . , . , . , , is 3.1.2 Qualification Tests . , . . . . . . . . . . . . . . . . , . . . , . , . . , . , , I, .
6、 . . . , *, . . . . 19 8.1.3 Index of Tests Required , . . . . . . . . . . . . . . . . . . . . . . , . . . , . . , . . , . , , . , , . , ,. 20 2.4.2 AltihIda s e s e * e * a e fi r, s a 8 t s a * e 1 a a a as s s s t - rn 0 rn 16 . . . . . JJST OF ILLUSTRATIONS Figures 1, 2 and 3 Control Motor Mount
7、ing Plates. . . . , . , . . , . , , . . . , . , . . , . , . 21 Figtire 4 .-. . . I Phase Power Test Circuit and Terminal Load Designation . . . . . . -. . . . . . ,. . . . , , , . , . . , . , . . , . . 24 Figure 5 . . . . . Typical Wattmeter-Ammeter Circuit *,. , , . , , , , , , , , , , , , , , , 24
8、 Figuro. 0 , , I , , , , Typical Parallel Tuning Circuit I . . . . . . , , . . . . . . . . , . . , . 25 Figure 7 , , . , , . , . Iinpechnco Measurement Series Resonant Bridge, , , . , , I, , , , 25 - Pigiro 8 . , . , , . I-rrivelope Drawing and Mechanical Dimensions , , , , , , . , , , , *, I , 26 F
9、iguro 9 I *, , a I Stall Torque Gradient Curve , , , , . . . . . . . . . . , . . . , , . . . , . . , 29 Figire 10 a e I a , . Suggested Standard Stall Torque Measurement , , , , . , , , , , . , , , , 30 I I I PIST OF TABLESt Table I . , , , *, , Control Motor performance Charncleristics , , I , , ,
10、, , , , , , , , 31 Table Il , , . , , Controi Motor Electrical Characteristics , , . . , . , . , , , , , , , 32 0 a e Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP*477A 65 M 83573LiO 0028436
11、7 M Iomued 7-1s- ARP 4.97 PRECISION CONTROL MOTORS - 400 CYCLES . Revised 1-3.0-6 INTRODUCTION Specifications written around precision control motors have speci- fied certain necessary characteristics, such as stall torque and power input, under production test conditions and techniques that are mai
12、nly and proper- ly concerned with accuracy and the shortest possible test time. The con- trolling factors in these characteristics are copper and aluminum, which are inherently temperature sensitive, and therefore these characteristics are degraded when the motor is operating for a period of time. I
13、n large power motors this degradation is relatively inconsequential, but in pre- cision control motors the reduced size of the motor and the high resist- ance to reactance ratio of the rotor combine to make this degradation a factor of importance. The amount of change for a given temperature variati
14、on, though, will vary with frame Size and internal design, so that it is not practicable to assign a definite limiting percentage value of de- gradation o either control motors as a class or to frame sizes, In order to ease the equipment design engineers problem and at the same time provide a basis
15、for more accurate comparable measure- ments between manufacturer and user, this recommended practice sets :up “standard conditions“ for design assurance testing and tabulated values which differ from previous publications by requiring the motor to be in a warmed-up condition which approximates its a
16、verage use tempera- ture. These conditions and the basic tests to which the tabulated char- acteristics refer are grouped in section 2.2 (Design Assurance) and com- pose a complete list of defining characteristics of the motor. Since this standard (warmed-up) condition is inipractical for 100% produ
17、ction testing or incoming inspection testing, an additional sec - tion 2.3 (Performance Testing) has been provided. Most section head- ings in 2.3 are identical to section headings in 2.2, but it will be noted that no warm-up period is required. However, all paragraphs dealing with a parameter that
18、could change with warm-up have a statement that, Ilthe values obtained should (exceed, or be less than) those shown in Table I when corrected for non-standard (cold, or no-mounting plate) conditions. This means that the manufacturers must determine and use the proper degradation factor for their mot
19、ors so that they can properly guarantee rated (warmedup) performance even though they use a simpler test for production acceptance. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP*4q7A b5-i 835
20、7340 0028q37 7 IRp 497A PRECISION CONTROL MOTORS - 400 CYCLES Iuued -%8 Rovlrrd 1-10-65 -4- Th repetitious use of the phrase I1Motor should bc as speci- fied in 2.2.1.3 in section 2 e 2 paragmphs, and the equally repetiti- ous use of the phrase trivhen corrected for non-standard conditionstt in seci
21、on 2.3 paragraphs is intentional. This recommended practice i8 not in itself a purehasiiig document, but will serve as the basis for siich docuniskits It is conceivable that cei3ain purchasing docu- nientts may not require control of all parameters listed. if these phrases did not appear in every pa
22、ragraph to which they apply, the specification writer who docs not need control of all parameters might vergr easily miss the important first paragr.aphs defining con- ditions and in so doing would he left with a specification that would not give him satisfactoiy reduction of this depadation that co
23、mes with normal operating temperature. 1. gcaPE 1 . 1 Goiieral: This recoinmendation establishes objectives for high performance control motors to be used with aeronautical and associated equipment in protective enclosures 03: completely within the shell of the aircraft so that they are subjected on
24、ly to the in- ternal climatic conditions of heat, cold, shock, vibration, altitude, and humidity. Control motors larger than size H23 are not covered in this document. 1.2 me Designation of Control Motors: Control motors are classified according to frame size, control winding voltage, power supply,
25、variable, and environmental capability. This itiformation is contained in the type designation which should consist of five bloclis of alternate numerals and letters as follows : Niunber Letter Number Letter Number 1.2.1 1.2.2 1.2.3 1.2.4 1.2.5 Frame Size Control Fixed Variable Environmental Winclin
26、g Winding Capability Voltage Power Supply i. 2.1 prme Size: The hvo numerals in the first block of the type designation number, nmltiplied by O. 1 indicate approximately the maximum diameter of the unit in inches, If the diameter is riot exactly a whole number of tenths, the next higher tenth is use
27、d. Frame sizes and exact dimension should be limited to those shown in Figure 8. 1.2.2 Co-ntrol Winding Voltage: The second block of the type designation number should be the letter V, L, 01. T, indicating a winding for vacuum tube amplifiers, line voltage, or transistor airiplifiers The table below
28、 indicates the voltage value associated with V, L, rrncl T for each frame size. Note that only sizes 11, 15, and 18 have ail three r e conmendations Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,- SAE
29、 ARPx497A 65 m 8357340 0028438 O m ARP 497A luued 7-15-58 Revised 1-3.0-65 PRECISION CONTROL MOTORS - 400 CYCLES 1.2.3 1.2.4 1.2.5 -5- Control Winding Voltage Frame Size V L T 23. None 115 36 20 None 115 None 18 282 115 36 15 230 115 36 11 180 115 36 10 None 26 36 8 None 26 36 5 None 26 36 Fixed Win
30、ding Power Supply: The third block of the type designation number should indicate the nominal power supply in accordance with the following table: CODE VOLTS FREQUENCY (cps) 1 115 400 2 26 40 O Variable: The fourth block of the type designation number should indicate a variable applicable to the par
31、ticular unit such as terminals, leads, and shaft in accordance with the following table: CODE VARIABLE A Terminal connection, smooth shaft B Flexible leads , smooth shaft C Terminal connection, pinion D Flexible leads , pinion Ambient Temperature Capabilities : The fifth block of the type designatio
32、n number should indicate the service conditions which the unit is designed to withstand accord- ing to the following table: Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-wrd 7uq5as8 JRp 497A Aavgrd 1
33、3-0-65 -6- PRECISION CONTROL MOTORS - 400 CYCLES , SERVICE AMBIENT TEMPERATURE OBE CONDITION RANGE 1 Normal Temp. -55 to 4-85 c 2 Extended Temp. -55 to +125 C 3 High Temp. -55 to +175 C 1 2.6 Marking: Each motor should have the following minimum information: 1. Name (Motor, Control) 2. Rated frequen
34、cy 3. Rated voltage of each phase Symbols a 1 and fl 2 can be used instead of “fixed winding“ and %ontr 01 winding I, respectively 4. a) Manufacturers name, symbol, or trademark b) Acdress (city and state) c) Manufacturers part number il) Mrikiufaoturer s serial number e) Bate of Manufacture (eg. ,
35、11/69) 1.3 DefinitionEi : 1.3.1 precision Control Motor: A precision convrol motor is a reversib-3, two-p-ase in- duction type of motor Bpecifioally designed to be operated from tivo independent volt- ags soirces of the game frequency with one voltage source maintained at a fixed volt- lige and phas
36、e direction atid with the second source varied in voltage and phase direc- tion to control speed, torque, and direction of rotation of the motor. A high torque to inertia ratio and an approximately straight line torque-speed curve are inherent char- acteristics of good control motors, 1 3.2 is a win
37、ding divided into two equal parts which will allow series or parallel external connections of the divided winding (4 external leads). No Load meed is the speed of the shaft rotation with no load applied to the shaft and rated voltage and frequency with proper phase relationships applied to both wind
38、ings Stall-Toraue is the torque developed at speeds in excess of 1 rpm but less than,l/2q of synchronous speed, with rated voltage and frequency of proper phase relationship applied to both windings. Locked Rotor Torque is not used for the motors covered in this document. Starting Voltage is the vol
39、tage of rated frequency applied to the control voltage winding necessary to start the rotor turning at no-load conditions with rated voltage and frequency on the fixed voltage winding. Slot Effect is the variation of magnetic interlocking between the rotor and stator. Single Phasing is the tendency
40、of the rotor to continue to rotate when one winding is opened and the other winding remains excited. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-uRp 497A -8 - 1.3.3.10 Time Constant is the time req
41、uired for the motor to accelerate from O to 63.2% of itg fiilal no-load speed when rated voltage, with proper phase relationship, is ap- plied to both windings. PRECISION CONTROL MOTORS - 400 CYCLES Irruod 7-15-58 Rvlrrd 1-10-65 1.3.3 10.1 Reversing Time is the time required for the motor to reach 6
42、3.2% of the no- load epeed upon the pliase reversal of the control winding voltage after initially running at the no-load spee in the opposite direction. It is approximately equal to tho time constant multiplied by 1.69 secons. 1.3.3.11 Theoretical Acceleration at Stall is a figure of merit derived
43、from the stall torque to rotor inertia ratio which indicates how rapicily a motor will accelerate from stall. 1.3.3.12 -Resistance is the equivalent pure d-c resistance which when substituted for the winding being checked will draw the same power. It is also equivalent to the impedance of a circuit
44、with a capacitor connected in parallel with the winding and the capacitor adjusted to unity power factor for the circuit. 13.3.13 -Csiipling.: The voltage transfer between the halves of Q control voltage winding when either half is energized 1.3.3.14 daim in Control of a servo motor is the slope of
45、the speed torque curve 2. CHARACTERISTICS 2.1 aveicd- 2.1.1 $3mernl* - Each motor shoiild be inspected to verify conformance with the applicable envolope dimenisions , lendwire and/or terminal identification, and markings. 2.1.2 -(See Figwe 8.) 2.1.3 miro Identification ($eo Figure 4. ) 2.1.4 Termin
46、al Identification (See Figure 4. ) 2.1 I 5 Flarkinff (See paragraph 1.2.6. ) 2.2 Slectrioa Assurance) (See Introduction.) 2.2.1 v: Motor Performance should be hasecl upon operation at the conditions specified be11.v. Motors tested under other conditions should provide spe- cified performance when te
47、sted at the conditions specified below. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE ARP*K477A b5 W 8357340 00284Li2 2 W ARP 497A Irrued 7-15-58 Revised i-io ahve . E. Power output thus cleterin
48、iiied should exceed the value specified in Table I. . Slowly increase control winding voltage from zero until motor dmft e or deterioration which could shorten life when subjected to the following test Place motor , properly mounted on a standard mounting plate, in a temperature- controlled chamber
49、at atmospheric pressure, and raise the chamber temperature to a value of 40 C higher than the maximum temperature rating of the motor as speci- fied in paragraph 1.2.5. The moior should not be energized. Hold the chamber bal- ance temperature within + 3 C of this temperature for three hours or until the motor resistance changes less -18 - of motor under
