Rotary transformer with relatively small output common ground error

Abstract

The invention relates to a rotary transformer with relatively small output common ground error, which is composed of a stator and a rotor and exists in two structural forms, namely, segmental type andintegral type. The stator comprises a stator case, a stator iron core and a stator winding wound thereon, and the rotor comprises a rotor shaft sleeve, a rotor iron core and a rotor winding wound the reon, wherein two phase windings of the rotor winding and / or stator winding are all formed by the alternate arrangement of a circular coil assembly and a concentric coil assembly; and the circular coil assembly and the concentric coil assembly under the two poles of the two phase windings are both symmetrically arranged. The capacitance of the rotary transformer is greatly reduced due to the alternative distribution of the output windings, and the output common ground quadrature error and null voltage are also greatly reduced, thus lowering the system angle measurement error, improving the system precision, and simultaneously widening the excitation frequency application range of the rotary transformer, satisfying the application requirements of certain special systems on high excitation frequency and small output common ground error of the rotary transformer.

Description

technical field [0001] The invention belongs to the field of rotary transformers, in particular to a rotary transformer with small output common-ground error. Background technique [0002] The role of the resolver in the angle measurement system is to complete the angle-to-mode transformation, transform the mechanical angle into an electrical phase analog signal or an amplitude analog signal, and then measure the input angle through phase or amplitude detection. For example, in the inertial navigation system, the measurement of the hull pitch, roll, and azimuth change angle is completed together with the induction synchronizer. The resolver is an inductive component. According to the principle of magnetic field coupling, when the resolver is compensated by the primary side or the secondary side, the output voltage should be in a sinusoidal relationship strictly according to the angle of the secondary side relative to the primary side, but there are Distributed capacitance, ...

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Problems solved by technology

At present, no resolver that can solve the above problems has been found

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