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(800) 777-3393 > Brushless Motors >> Brush Type Motors >> Pancake Resolvers > Resolvers are a cost-effective answer to yourcontrol needs.They save you size and weight,being substantially smaller than other transducer approaches,and easily integrated into your system,component or motor design.Signal converters and balance circuit- ry can easily be incorporated into the resolver and/or output connector configura- tion.Ask our Sales Engineers about simplify- ing your design task with Axsys integrated packages,including motion control compo- nents and related electronics. > IntroductionVLIneProducts...

Brushless Motors >> Brush Type Motors >> Accuracy Low CostApplications High Precision Applications Pancake Resolvers Electrical errors range from 15(arc min-utes) for low accuracy units to 5Ҕ(arc sec- onds) for high accuracy units.Available accuracies are listed in the data tables for every unit type.Resolver schematics and phase equationsare listed on page 78 at the end of the data pages for reference.An explanation of the easy to use V Linenumbering system is given on page 25 at the end of this section.If you wish to specify a resolver exactly as it is specified in the tables, you need only...

Brushless Motors >> Brush Type Motors >> (800) 777-3393 Pancake Resolvers > Applications When precise positioning isrequired there are manywaysto addressthe problem, butonlyaresolver can provide ruggednessofconstruction and high positioning accuracyin extremelyhostile environments. Military/Aerospace: > Radar fire controlsAir trafficcontrolradarTelescopesNightvision podsMissile guidance systemsPeriscopesGyro navigation systemsSeeker headsStabilized platforms Industrial:Ballscrew positioning > Motor commutationRoboticspositioningMachine vision systemsX-YtablesComponentinsertionRemote video controlsPickand...

Brushless Motors >> Brush Type Motors >> Pancake Resolvers (800) 777-3393 Resolver Functions A resolver is an electromagnetic transducerthat can perform three basic functions:trans- mitting information,receiving information and correcting information.The three types of devices can be used as individual machines or as a system with the units directly interfacing with each other.They are usually defined as follows:Resolver TransmitterӔ(RX):Converts mechanical position into an electrical signal.Resolver Receiver or TransformerӔ(RT):Translates electrical signals into angular position in conjunction...

Brushless Motors >> Brush Type Motors >> Pancake Resolvers (800) 777-3393 impedences,and do not change significantlywith change of positional angle. Axsys Resolvers are designed to optimize stator/rotor slot combination in order to reduce common space harmonics and improve angular accuracy.Every dimension and tolerance is carefully chosen,and wind- ings are specially designed in order to make a near-perfect sinusoidal magnetic flux dis- tribution,and reduce the errors resulting from manufacturing limitations.For super-high accuracy units,in order tocompensate for any remaining imperfections in...

Z > Brushless Motors >> Brush Type Motors >> (800) 777-3393 Pancake Resolvers > ● Higher frequencies may result in in- creased magnetic flux leakage as well as changes in capacitance coupling.This,in turn,will degrade accuracy and increase null voltage. Impedances are usually specified in rectan-gular form as R +jX where R is the active componentӔand X is the reactive component.ӔActive component value is the sum of DC and AC resistive components; the DC resistive component depending on wire gauge and number of turns is tempera- ture sensitive,the AC component depending on core losses resulting...

Loading Effects Loading presents almost no problem formost installations of Axsys Resolvers because they are designed for the lowest possible output impedance.The rule-of-thumb is that the electrical loading should be at least ten times greater than the output short cir- cuit impedance,and the standardized multi- speed units are seldom above 1000 ohms. Single speed units are usually less than 100 ohms.If the output load impedance happens to be very small however,output voltage will decrease,input current and null voltage will increase,and the accuracy will degrade.When used with R-to-D converters,whoseinput...

(800) 777-3393 > Brushless Motors >> Brush Type Motors >> E Pancake Resolvers speed resolvers.For properly mounted pancake resolvers,approximate level of EZ shift versus temperature can be as follows: ● For one speed units,approximately 1 to 2 arc seconds/C (dependent on size and rigidity) Т׏ For multispeed units (8X or 16X),approximately 0.1 to 0.3 arc seconds/CChanges in phase shift and TransformationRatio (TR) versus temperature are a pri- mary result of resistance changes in the copper magnet wire of the resolver primary winding.Increased temperatures result in higher resistance,increasing...

-B- R.02 MAX.R.02 MAX. drTHRU +.005.001 .006DCnPL EQ.SP.ON R FULL R10ְ1Ѱ F F D Sm-C- -A- D SF D RF D Rm-D- dsSLOT +.005.001 .014BAnPL EQ.SP.ON S Mounting Diameters Flanged Dia. BoltCircle Rec.SizeforMtg.Screw FlangeWidthF No.ofSlots > Slotsds&dr Stator Rotor Stator Rotor Stator Rotor D > SM TOL D > RM TOL D > SF D > RF S R >

Brushless Motors >> Brush Type Motors >> > Where:S1-S3 and S2-S4 are the primary windingsC1-C3 and C2-C4 are the compensation windings R1-R3 and R2-R4 are the cosine and sine output windings Z L L is the load impedanceIf a resolver is used as a Receiver,Ӕthen two amplifiers will be used (one for S1-S3,C1-C3 and the second for S2-S4,C2-C4 windings). Input Voltage Volts 7.07 NOM. Frequency Hertz 400 NOM. Input Currect mA 5 Max. Transformation Ratio:*Rotor/Stator - 1.0000 .0005 Phase Shift:*Rotor/Stator Degrees ѱ30 Impedance Z > SO (1400 Min.) 800 + j 1400640 + j 1202350 + j 1350490 + j 1440540...