Because the secondary windings are displaced mechanically by 90°, the two output sinusoidal signals are phase shifted by 90° with respect to each other. The amount of coupling onto the secondary windings is a function of the position of the rotor relative to that of the stator, and an attenuation factor known as the resolver transformation ratio. When the primary winding, R1 – R2, is excited with a sinusoidal signal as expressed in Equation 1, a signal is induced in the secondary windings. Figure 1 shows classical and variable reluctance resolvers. Their primary and secondary windings are all on the stator, but the saliency (exposed poles) of the rotor couples the sinusoidal variation in the secondary with the angular position. Variable reluctance resolvers, on the other hand, have no windings on the rotor. Standard resolvers have a primary winding on the rotor and two secondary windings on the stator.
Employed in industrial motor controls, servos, robotics, power-train units in hybrid- and full-electric vehicles, and many other applications that require precise shaft rotation, resolvers can withstand severe conditions for a very long time, making them the perfect choice for military systems in harsh environments.
Resolvers, electromechanical sensors that measure precise angular position, operate as variable coupling transformers, with the amount of magnetic coupling between the primary winding and two secondary windings varying according to the position of the rotating element (rotor), which is typically mounted on the motor shaft. Jakub Szymczak, Shane O’Meara, Johnny Gealon, andĬhristopher Nelson De La Rama Download PDF Introduction On the other hand, our Expert, more advanced version of the PSU Calculator greatly extends the ability to select various PC parts and components, adds CPU and Graphics card overclocking, and allows consumers to calculate PC energy consumption, compare PSU efficiencies, and ultimately project energy cost.Precision Resolver-to-Digital Converter Measures Angular Position and Velocity Video Card Overclockīasic version of the OuterVision Power Supply Calculator allows users to quickly estimate power consumption with minimal selection of PC parts. Building cryptocurrency mining rig? Check our Mining Rig Builder tool. Are you building a modern gaming PC, low power HTPC media server, or maybe you need to figure out power requirements for a rack in a data center? We've got you covered - OuterVision PSU Calculator will help you to select a suitable power supply unit and even Uninterruptible Power Supply (UPS) for your system. OuterVision Power Supply Calculator is the most accurate PC power consumption calculator available and is trusted by computer enthusiasts, PC hardware and power supply manufacturers across the Globe.
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