A transducer using magnetic coupling to measure absolute rotary position. The resolver creates a fixed sine wave and one or more variable sine waves that are compared to create a position within 360 rotary degrees. It requires an analog signal interface and special conditioning electronics.
A position transducer that uses magnetic coupling to measure absolute shaft position during one revolution.
rugged electromagnetic feedback device that acts like a rotating transformer to provide an analog signal with velocity and position information; adaptable to many different environments because of its construction.
a device that generates analog sine and cosine signals as it's shaft angle changes
a form of absolute encoder that operates on the same principal as an electric transformer
An electromagnetic feedback device which converts angular shaft position into analog signals. These signals can be processed in various ways, such as with an RDC (resolver-to-digital converter) to produce digital position information. There are two basic types of resolvers; transmitter and receiver. A transmitter-type is designed for rotor primary excitation and stator secondary outputs. Position is determined by the ratio of the sine output amplitude to cosine output amplitude. A receiver-type is designed for stator primary excitations and rotor secondary output. Position is determined by the phase shift between the rotor output signal and one of the primary excitation signals.
Inductive angle measuring device, producing two alternating voltages whose amplitudes or phases depend on the (shaft) rotation angle.
A feedback device which provides velocity and position information to commutate the motor. This electromagnetic feedback device converts angular shaft position into analog signals.
A feedback device with a construction similar to a motor's construction (stator and rotor). Provides velocity and position information to a drive's microprocessor or DSP to electronically commutate the motor.
Inductive angular measuring device that generates two alternating voltages, with amplitude a function of the angle.
A resolver is a type of rotary electrical transformer used for measuring degrees of rotation. It is considered an analog device, and has a digital counterpart, the rotary (or pulse) encoder.