Resolver

Abstract

The invention discloses a resolver, comprising a rotor and a stator, wherein an air gap is arranged between the outer circle surface of the rotor and the inner circle surface of the stator; the inner circle surface of the stator is provided with teeth and slots at regular intervals; each tooth is wound with three layers of windings orderly; one layer of winding is an exciting winding induced with exciting current; the other two layers are respectively sinusoidal windings and cosine windings which output induced electromotive forces; the outer circle surface of the stator is uniformly provided with P wave peaks and P wave troughs; and the wave peaks and wave troughs are smoothly connected to be a waveform outer surface of the rotor. The resolver is simple in structure; each winding can be wound around the stator at once by a special winding machine; the rotor and the stator can be made by laminations punched by a punching machine, the production has high level of mechanization, and the production cost is greatly reduced. The amplitudes of the electromotive force output by the sinusoidal windings and the cosine windings respectively make a P-time sine and cosine change as the rotor rotation angle, thus the output winding has the function of a two-phase multi-polar resolver.

Description

technical field [0001] The invention relates to a rotary transformer, in particular to a reluctance type multi-pole rotary transformer. Background technique [0002] The traditional rotary transformer used for angle measurement, its excitation winding and output winding are respectively arranged on the rotor and the stator. It is a brush (contact) structure. To achieve brushless, it is necessary to add a ring coupling transformer ( In this way, the structure of the resolver is complicated; and the number of pole pairs of this brushless resolver is mostly dominated by a pair of poles. If you want to use 2-12 pairs of poles, this kind of rotary transformer is extremely difficult to design and manufacture, and it is almost impossible. However, in another existing so-called "vernier type rotary transformer", the excitation winding and output winding are all in the stator. In practice, brushless is realized, but this vernier type resolver has a large number of pole pairs P, and ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing rotary transformer used for angle measurement has a complex structure and is not suitable for multi-pole angle measurement with a number of pole pairs ranging from 2 to 12 pairs of poles, the present invention provides a reluctance multi-pole transformer based on the principle of reluctance change. Pole resolver for multi-pole (2-12 pole pairs) angle measurement or multi-pole angular position sensor

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