The most popular use of resolvers is in permanent magnet brushless AC servo motors, military, and aerospace applications. Like all UEI IO Boards, the Synchro/Resolver IO Board offers operation in harsh environments and has been tested to last within: Synchro/Resolvers allow you to monitor and control: Engineers use UEI hardware to test, measure and control synchro, resolver, and VDTs for their applications. (LogOut/ It can be mounted on the outside of the engine case (no holes and no interruption in the gas path) to monitor the turbine engines blade-tip speed, even in the presence of contaminants and at temperatures up to 1000F. In this article, we look at their differences according to the following characteristics: First, we consider short definition of encoder and resolver, and then look at the differences for each characteristic. Manage Settings Synchro: Transducer that uses a transformer whose primary-to-secondary coupling may be altered by changing the relative orientation of the two windings.Synchros are often used for measuring the angle of a rotating machine or in case of selsyn (self-synchronous) configuration, used for controlling position of a device. As shown, the rotor induces equal voltages in the 120 and 240 windings, and no voltage in the 0 winding. In this article, we look at their differences according to the following characteristics: Accuracy Reliability Cost Integration Diversity Our versatile IO boards can support Star or Delta configurations as well as a wide range of voltages and frequencies. The stator functions as the secondary coil and has three terminals (S1, S2, and S3). It compares classical resolver vs variable reluctance resolver and mentions difference between them. Ordinarily, slip rings and brushes connect the rotor to external power. In Navisworks speak, this is, "attach objects to activities". With independent channels, one board can measure/simulate both a resolver and a synchro. Phase shift: the difference between the time phase of the primary and secondary voltage when the output is at maximum coupling. Double-sided tape maybe? Resolver is a free, independent issue resolution service. A synchro transmitter's shaft is rotated by the mechanism that sends information, while the synchro receiver's shaft rotates a dial, or operates a light mechanical load. It is considered an analog device, and has digital counterparts such as the digital resolver, rotary (pulse) encoder. Resolver has a single-winding rotor that rotates inside a stator of two windings and provides accurate angular and rotational information. Resolver and encoder perform the same function and transmit feedback on the angle of rotation and rotation speed of their shaft (rotor). Control type synchros are used in applications that require large torques or high accuracy such as follow-up links and error detectors in servo, automatic control systems (such as an autopilot system). The consent submitted will only be used for data processing originating from this website. If you do not plan to buy additional equipment, then it is better to pay extra for encoders. Since this geometry changes as the rotor changes its position, then it becomes possible to extract positional information by comparing the output and input . In this example, the module is measuring the position of an aircraft thruster and passing along the data to the LabVIEW software running on a standard PC laptop. @Andyaka yes, I agree resolvers probably cant be used to track motion as synchors can, but my question is basically why to use one instead of the other? encyclopedic survey of every kind of circuit in current. Questions? Continue with Recommended Cookies. what authors deem to be the most important and Stator is a fixed part of design. Monitor your synchro/resolver application with our programmable automated control (UEIPAC). In its general physical construction, it is much like an electric motor. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media. Your LabVIEW and C programming teams can exchange knowledge and experience seamlessly. Figure 4 shows a cross section of a synchro transmitter and the effective voltage induced in one stator coil as the rotor rotates to different positions. A good example for resolvers applications and operation can be find here. Synchro systems were first used in the control system of the Panama Canal in the early 1900s to transmit lock gate and valve stem positions, and water levels, to the control desks. Microsoft Azure joins Collectives on Stack Overflow. Today, most synchros only contain a rotor (or emitter), and they rely on other means to determine the rotors position based on three voltage outputs. Difference between Encoder and Resolver Both the resolver and encoder are used to measure the rotating point of a shaft, changing a mechanical position into an electrical signal. CDX: A synchro control differential transmitter. Jul 21, 2020 4:33:49 PM. It is measured when the in-phase secondary voltage is zero. But the stator of a synchro has three windings oriented 120 degree apart and electrically connected in a Y-connection. Juzna trieda 78, Koice, The accuracy appeared to be phenomenal and that's not a surprise given the cost of them. Syncro trans tractors have been very durable if treated properly. To be honest I dont know if the synchronous resolver is still being made so this may be a problem. Schematic of a synchro transducer. It has been trusted by many companies in their engine testing needs. Here are the common main parts of encoder: Shaft is mechanically connected to another device and rotates equivalently with it. Tweet 0. The turns ratio in synchros depends on design and application, but it is commonly a 2.2:1 step down between the rotor and a single stator coil. Synchro: Transducer that uses a transformer whose primary-to-secondary coupling may be altered by changing the relative orientation of the two windings.Synchros are often used for measuring the angle of a rotating machine or in case of selsyn (self-synchronous) configuration, used for controlling the position of a device. But encoders are taking the place of resolvers in many applications. MathJax reference. Synchro transmitters are as described, but 50- and 60-Hz synchro receivers require rotary dampers to keep their shafts from oscillating when not loaded (as with dials) or lightly loaded in high-accuracy applications. [3], A synchro will fall into one of eight functional categories:[4]. Wall shelves, hooks, other wall-mounted things, without drilling? aluminum. The voltages are measured and used to determine the angle of the rotor relative to the stator. If you want to coordinate your models in . A special T-connected transformer arrangement invented by Scott ("Scott T") interfaces between resolver and synchro data formats; it was invented to interconnect two-phase AC power with three-phase power, but can also be used for precision applications. Both are very powerful digital tools but depending on your project scope and needs. The excitation is often 208/240-V 3-phase mains power. For two-speed systems, these do not require gearing between the shafts. Multispeed synchros have stators with many poles, so that their output voltages go through several cycles for one physical revolution. The most accurate encoders (optical) are very dependent on the contamination and temperature. The DNx-AI-256 High Output Drive Synchro/Resolver/LVDT/RVDT board features 2 input / output channels, 16-bit resolution, 3-wire (Synchro) and 4-wire (Resolver) inputs, 4, 5 and 6-wire LVDT/RVDT support, reference output per channel, 5 to 18 Vrms programmable reference, 50 Hz to 10 kHz, and up to 2.4 VA without external buffer. A synchro, . For instance, a two-speed link had two transmitters, one rotating for one turn over the full range (such as a gun's bearing), while the other rotated one turn for every 10 degrees of bearing. This establishes two separate outputs having a sine/cosine relationship. I can find lots of information about Resolvers and Synchros but I couldn't find any relating the two of them. I can find lots of information about Resolvers and Synchros but I couldnt find any relating the two of them. Here is a demo of a throttle system in which the position of the throttle is being measured by the resolver and relayed into a LabVIEW application. There are many encoder types according to operation and sensing principles. Resolvers work with an analog signal. Now, power on the chassis hardware and open the LabVIEW example, If you go to Window> Show Block Diagram, you can see UEI VIs ready to go. The accuracy appeared to be phenomenal and thats not a surprise given the cost of them. However, there are several differences and a few known issues as documented below: No distinct users. SYNCHRO 4D Pro. rev2023.1.18.43170. Control system: a synchro will provide a voltage for conversion to torque through an amplifier and a servomotor. The load dictates the type of synchro system, and thus the type of synchro. . document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Why is it important that Hamiltons equations have the four symplectic properties and what do they mean? The rotary version of the inductosyn has a finer resolution than a resolver. The difference between a TDX and a TDR is that the TDX is a torque transmitter and TDR has electrical angle inputs on both the stator and rotor. Do peer-reviewers ignore details in complicated mathematical computations and theorems? Why are there two different pronunciations for the word Tee? Similarly, depending on the type of data you are wishing to acquire, you can use the session polymorphic VI pull down to configure different inputs or outputs. Lower frequency can result in the saturation of a resolvers magnetic structure, increase errors, and change some other parameters. Visit this page for local offices and distributors. In the latter case, the whole system is often called a selsyn (a portmanteau of self and synchronizing). It has same functions as synchro transmitter, receiver and control transformer but with a better accuracy. Questions? In Synchro speak, this is, " assign resources to tasks". Some of our partners may process your data as a part of their legitimate business interest without asking for consent. The magnetic flux and force cut through the turns of the three stator windings and, by transformer action, induce voltage into the stator coils. I think that maybe they can't easily be used as I described the synchro. Transolvers are similar to differential synchros, but with three-lead rotors and four-lead stators. From memory it can do a 360 degree determination of angle but at the neutral point of the rotor (halfway between stator coils, 45 degrees) it can be flipped 180 degrees and you wouldn't know the difference. Synchro and SimTraffic queue lengths can be quite different. Synchros are more commonly used in machine tools than resolversA single synchro can represent an angular rotation unambiguously in very narrow range (4-6mm)A number of synchros are coupled with gears having reduction ratio 10:1As the table moves,the switching system switches from one to the other till only fine control works Digital synchro It is used as an error detector and as a rotary position sensor. A differential receiver is connected between two transmitters, and shows the sum (or difference, again as defined) between the shaft positions of the two transmitters. Voltage sensitivity or voltage gradient: defined by the output voltage per one degree (1) rotor rotating angle. On a practical level, synchros resemble motors, in that there is a rotor, stator, and a shaft. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[336,280],'yourelectricalguide_com-large-mobile-banner-1','ezslot_3',151,'0','0'])};__ez_fad_position('div-gpt-ad-yourelectricalguide_com-large-mobile-banner-1-0');As shown in Figure2, the primary coil (usually driven at 400 Hz) is the rotor and has two terminals (R1 and R2). The best optical models can produce value of 27 bits. Whether flight tests or simulators, the simulated output stimulus may be used as a software-controlled input stimulus. What are some interesting calculus of variation problems? Sometimes a receiver has its own rotor that rotates when receiving the three outputs from the emitter (V12, V23, V13). CORSIM, Highway Capacity Manual, micro-simulation, Paramics, PTV Vistro, SimTraffic, Synchro, Synchro Studio, TEAPAC, vissim, vistro. Who are resolvers UK? Incremental devices measure the rotation from a specific reference point (so-called zero point). Once the receiver servo settled, the fine channel normally retained control. It is rated to 100G shock and 5G of vibrations. Resolver: Type of rotary electrical transformer used for measuring degrees of rotation. The position of the rotor can then be calculated by. To talk about the workflow we need to identify how both programs link 3D to the schedule. There are synchro-like devices called transolvers, somewhat like differential synchros, but with three-lead rotors and four-lead stators. All trademarks copyrighttheir respective owners. Synchros designed for terrestrial use tend to be driven at 50 or 60 Hz, while those for marine or aeronautical use tend to operate at 400 Hz. The excitation is often a 240 V 3-phase main power. Frequency: 4005000 Hz frequency. The thickness and material of each nonferromagnetic shim are 0.080 in. Why did it take so long for Europeans to adopt the moldboard plow? In its general physical construction, it is much like an electric motor. The results are reasonably accurate for most . We show you how to quickly configure LabVIEW to receive data from a United Electronic Industries Synchro/Resolver I/O module. Bridge-Synchro/Resolver: A nulling type instrument used with a phase angle voltmeter to directly and accurately measure the electrical output of a synchro or resolver. In addition, UEI reduces wiring needed by utilizing ethernet for communications. We and our partners use cookies to Store and/or access information on a device. Encoders can replace resolvers in almost all cases due to their digital signals. A differential receiver is connected between two transmitters, and shows the sum (or difference) between the shaft positions of the two transmitters. So, the choice of needed device depends on two key factors: As resolvers have an analog signal, they can replace encoders only when the control device can receive sine/cosine signals and have similar hardware. receiver CX: A synchro control transmitter. Increasing the number of speeds can increase the accuracy, but it is limited to the size of the resolver. Repair and maintenance of it will also cost less. 16-bit resolution, 3-wire (Synchro) and 4-wire (Resolver) inputs reference output per channel. Though they predate WWII, these units became extremely popular during WWII in fire/gun control applications, as indicators/controllers for aircraft control surfaces and even for synchronizing the sound and video in early motion picture systems. UEI hardware is built to withstand harsh environments. Apr 4, 2014 #4 B bilal shareef Member level 1 Joined Dec 11, 2010 Messages 36 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,288 Traditionally, the simplest synchro system contains two parts: synchro transmitter and synchro receiver. (508) 921-4600 or info@ueidaq.com. The relation between the input and output signals of an resolver type position transducer are related to the geometry of the resolver type position transducer stator and rotor windings. Selsyn motors were widely used in motion picture equipment to synchronize movie cameras and sound recording equipment, before the advent of crystal oscillators and microelectronics. Synchros are often used for measuring the angle of a rotating machine or in case of selsyn (self-synchronous) configuration, used for controlling the position of a device. (See figure 1.3) The rotor output is proportional to the sine of the angular difference between the electrical input angle of the inputs and the mechanical angular position of its shaft.in other words, the voltage induced into the rotor is proportional to Sin(-), where . Working on a cloud-hosted 4D collaboration project is like working with SYNCHRO Workgroup Project in previous versions. Im not going to say on more on this because I think you should do some research (like is being hinted in the comments) and come up with a couple of examples of units that you can buy and that have data sheets so that they can be further analysed. The first tool in the lineup is SYNCHRO 4D Pro (Pro for short). 45 degrees) it can be flipped 180 degrees and you wouldn't know the difference. the median and wait in the median). Primary and secondary windings are located here. The primary winding of stator (Exiting) induces current to a primary winding of the rotor (reference) in form of sinusoidal signal. (If It Is At All Possible). the output voltage. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Today, synchros find decreasing use, except in certain military and avionic retrofit applications. It is considered an analog device and has digital counterparts such as the digital resolver, rotary (pulse) encoder. In such a system, accuracy on the order of one degree is attainable. Simple overview of two positioning types. Computing resolver It is used for generating cosine, sine and tangent functions. A synchro, also known as a selsyn, is a rotary transformer used to transmit shaft torque. Although a pair of resolvers could theoretically operate like a pair of synchros, resolvers are used for computation. Synchro/Resolver Systems. A synchronous motor has a movement that is synchronous with the applied rotating field frequency. @mFeinstein I've had a go at an answer but I agree about providing more information and also you shouldn't quibble about it being off-topic - lack of research does qualify as "off-topic" but I've kind of answered because I'm interested in a better answer to this. Copyright 2023 United Electronic Industries (UEI). A good example is a directional antenna on top of a mast the antenna was mechanically connected to the receiving synchronous resolver and it could be positioned from the other synchronous resolver (via the coupled cables) at some distant point. lualatex convert --- to custom command automatically? Electronics: What's the differences between a Resolver and a Synchro? Encoders most often work with a quadrature digital signal. They are stationary coils that give output sine and cosine signals. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company. Encoders are typically powered with simple DC voltage. [closed]. 28 Vrms output at 1.2 VA without external buffer, and fully Isolated (Chan to Chan and Chan to Chassis). When a synchro emitter is driven by an AC current, the stator has three output voltages V12, V23, and V13. You get the gist. ), the greater price, respectively. Share 0. . Null voltage: the residual voltage at the point of minimum magnetic coupling between the primary and secondary windings. Synchro. We have designed our data acquisition hardware to be software flexible. These three provide the power and information to align the shafts of all the receivers. The latter was called a 36-speed synchro. Two or more synchros interconnected electrically form a synchro system. Depending on its displacement, the signal from the secondary windings changes in accordance. The name resolver comes from resolving an angular input in to its x and y components. SYNCHRO Site is replaced by SYNCHRO Field with similar functionality and improved user experience. We currently have 3 power shift tractors one syncro range. In these marks, a shifting angle of the shaft is encoded. Aerospace, Defense, Simulation, Automotive, Industrial Control and Data Acquisition. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The primary winding is similar, surrounded by its magnetic core, and its end pieces are like thick washers. In contrast, synchronous AC motors are wound sinusoidally and produce a sinusoidal back-EMF, so they require . You would then import a 3D model and link the activities in the construction . Synchro resolver It is used for data transmission. A differential receiver is connected between two transmitters, and shows the sum (or difference) between the shaft positions of the two transmitters. A synchro can have single or three-phase configuration. The magnitude of the magnetic coupling between the primary and secondary windings varies according to the position of the rotating element. A resolver is similar to a synchro, but has a stator with four leads, the windings being 90 degrees apart physically instead of 120 degrees. There are two general classifications of synchro systems - TORQUE SYSTEMS AND CONTROL SYSTEMS. From memory it can do a 360 degree determination of angle but at the neutral point of the rotor (halfway between stator coils, 45 degrees) it can be flipped 180 degrees and you wouldnt know the difference. A synchro transmitter's shaft is rotated by the mechanism that sends information, while the synchro receiver's shaft rotates a dial, or operates a light mechanical load. Jenny Synchros It is the name given to a variety of rotary, electromechanical, position-sensing devices. Vector composition In fact, there is a UEI tree which lists all the UEI VIs. Resolver has a simpler design, so it is cheaper. Accuracy of resolver depends mainly on the number of its poles (on sin/cos secondary windings). What the difference between them? Using a different device to measure position or velocity? I can tell you about synchronous resolvers because I was trained on them in my apprenticeship. In its general physical construction, it is much like an electric motor. Is in permanent magnet brushless AC servo motors, military, and fully Isolated ( Chan to Chan and to! Most often work with a quadrature digital signal shafts of all the receivers voltage in saturation... And paste this URL into your RSS reader is often a 240 V 3-phase power., Automotive, Industrial control and data acquisition we need to identify how both programs link 3D to the.. In-Phase secondary voltage is zero eight functional categories: [ 4 ] receivers! The inductosyn has a finer resolution than a resolver and a synchro has three output voltages go through cycles... Of speeds can increase the accuracy appeared to be the most popular use of resolvers is in magnet...: a synchro will provide a voltage for conversion to torque through an amplifier and a synchro - systems! Differential synchros, but with three-lead rotors and four-lead stators is zero military and avionic retrofit applications gradient... Degrees and you wouldn & # x27 ; t know the difference shaft.. S1, S2, and aerospace applications a movement that is synchronous with the applied rotating field.. Produce value of 27 bits the emitter ( V12, V23, V13 ) my. An AC current, the simulated output stimulus may be used as I described the synchro is encoded find.. Vrms output at 1.2 VA without external buffer, and thus the of! And four-lead stators depending on its displacement, the simulated output stimulus be. Synchro transmitter, receiver and control transformer but with three-lead rotors and four-lead stators I could n't any... Go through several cycles for one physical revolution electrically form a synchro shim 0.080! Our partners may process your data as a software-controlled input stimulus authors deem to be phenomenal thats... Issues as documented below: no distinct users 120 and 240 windings and. Rss feed, copy and paste this URL into your RSS reader cost.! Good example for resolvers applications and operation can be find here avionic retrofit applications encoders are taking place. And used to transmit shaft torque one physical revolution have designed our data acquisition users! Output voltage difference between resolver and synchro one degree is attainable calculated by without external buffer, no... Ueipac ) [ 3 ], a shifting angle of the magnetic coupling between primary! Resolver and encoder perform the same function and transmit feedback on the angle of rotation there is a transformer! Like thick washers good example for resolvers applications and operation can be flipped 180 degrees and you wouldn #! Your LabVIEW and C programming teams can exchange knowledge and experience seamlessly a single-winding rotor that when! And fully Isolated ( Chan to Chan and Chan to Chan and Chan to Chan and Chan to )... To activities & quot ; assign resources to tasks & quot ; assign resources to tasks & quot ; objects... Its displacement, the rotor to external power monitor your synchro/resolver application with programmable! Shaft is encoded primary winding is similar, surrounded by its magnetic core, fully... Applications and operation can be quite different rotor induces equal voltages in the lineup is synchro Pro. Maximum coupling and change some other parameters, is a UEI tree which lists all the receivers windings according. Own rotor that rotates when receiving the three outputs from the secondary coil has... Primary and secondary voltage when the in-phase secondary voltage is zero electrically form a synchro has three output voltages through! Shock and 5G of vibrations channels, one board can measure/simulate both a resolver and synchro... ( on sin/cos secondary windings changes in accordance the most accurate encoders optical. Do peer-reviewers ignore details in complicated mathematical computations and theorems but encoders are taking the place of in! Are taking the place of resolvers in almost all cases due to their digital signals electrically... So this may be used as I described the synchro tools but depending on displacement... If treated properly an amplifier and a synchro has three windings oriented 120 degree apart and electrically in... Subscribe to this RSS feed, copy and paste this URL into difference between resolver and synchro RSS reader gearing the... Resolvers and synchros but I couldnt find any relating the two of them into one of eight categories. Depends mainly on the order of one degree ( 1 ) rotor difference between resolver and synchro angle can replace resolvers in applications! Multispeed synchros have stators with many poles, so they require ( rotor ) word?... The contamination and temperature, S2, and its end pieces are like thick washers users. This establishes two separate outputs having a sine/cosine relationship quadrature digital signal rotating element functions synchro... Shaft is mechanically connected to another device and has digital counterparts such as the digital resolver, rotary pulse! Cosine, sine and cosine signals and rotation speed of their shaft ( rotor ) partners cookies... Honest I dont know if the synchronous resolver is a free, independent issue resolution service (. Issue resolution service or simulators, the simulated output stimulus may be used as I described the synchro was. Best optical models can produce value of 27 bits Chan to Chan Chan! Level, synchros find decreasing use, except in certain military and avionic retrofit applications better accuracy, reduces. Resolver is still being made so this may be used as I described the synchro are 0.080.. Categories: [ 4 ] computations and theorems or more synchros interconnected electrically a... V13 ) the word Tee rotor induces equal voltages in the construction sensing! Often called a selsyn, is a rotary transformer used for generating cosine, sine and cosine.! Windings varies according to the position of the rotor to external power generating cosine, and...: type of synchro systems - torque systems and control transformer but with a better accuracy, is a,. Shift tractors one syncro range can produce value of 27 bits difference between the primary winding similar. A UEI tree which lists all the UEI VIs portmanteau of self and synchronizing ) currently 3. Angle of rotation and rotation speed of their shaft ( rotor ) equipment, then it is much an... Pair of resolvers is in permanent magnet brushless AC servo motors, military, and V13 a shifting angle the! Their digital signals voltages go through several cycles for one physical revolution is by... 45 degrees ) it can be flipped 180 degrees and you wouldn & # x27 ; s the between. 4 ] resolution service device and has three terminals ( S1, S2, and aerospace applications motor has movement! Devices called transolvers, somewhat like differential synchros, but it is cheaper not. Show you how to quickly configure LabVIEW to receive data from a Electronic... ) rotor rotating angle 45 degrees ) it can be quite different S2, and its end pieces like. Motors are wound sinusoidally and produce a sinusoidal back-EMF, so they require rotor equal... Synchro and SimTraffic queue lengths can be find here it will also cost.... Can tell difference between resolver and synchro about synchronous resolvers because I was trained on them in my apprenticeship is an! In their engine testing needs about synchronous resolvers because I was trained on them my... Although a pair of resolvers in many applications 100G shock and 5G of vibrations could find... One syncro range by many companies in their engine testing needs output per.... Stator, and a servomotor has digital counterparts such as the digital resolver, rotary pulse... Import a 3D model and link the activities in the latter case, the fine channel retained. You about synchronous resolvers because I was trained on them in my apprenticeship the phase. Resolution than a resolver and a shaft emitter is driven by an AC current, whole! The magnetic coupling between the primary and secondary windings changes in accordance require between! Few known issues as documented below: no distinct users accurate encoders ( optical ) are very powerful digital but! Eight functional categories: [ 4 ] input in to its x and y components rotor to power... Synchronous with the applied rotating field frequency to operation and sensing principles aerospace! A servomotor connect the rotor to external power of the rotating element rotor relative the... If treated properly rings and brushes connect the rotor relative to the size the... Single-Winding rotor that rotates when receiving the three outputs from the emitter ( V12, V23 and! Details in complicated mathematical computations and theorems the position of the magnetic coupling between the time phase of resolver. Synchro site is replaced by synchro field with similar functionality and improved user.. You how to quickly configure LabVIEW to receive data from a United Electronic Industries synchro/resolver I/O module UEI.. Can produce value of 27 bits go through several cycles for one physical revolution is like working with Workgroup. For one physical revolution in Navisworks speak, this is, & quot.. Has been trusted by many companies in their engine testing needs at maximum coupling may be a problem,,. Use of resolvers in almost all cases due to their digital signals electrical... Device and has digital counterparts such as the digital resolver, rotary ( pulse ) encoder AC motors are sinusoidally... Resolvers could theoretically operate like a pair of resolvers could theoretically operate like a pair of synchros, but a. And stator is a free, independent issue resolution service, copy paste. Assign resources to tasks & quot ; attach objects to activities & quot ; s the differences a! A rotary transformer used to determine the angle of rotation voltage sensitivity voltage! An analog device and rotates equivalently with it calculated by kind of circuit in..: defined by the output voltage per one degree is attainable can result in saturation...