KR970011890A - Rotor position detection device of non-commutator motor - Google Patents

Abstract

The present invention relates to a rotor position detecting device capable of switching the current flowing in the armature coil of the stator by accurately detecting the position of the driving magnet of the rotor without being affected by the armature core of the stator. The rotor position detecting device of the motor includes a rotor consisting of a rotor yoke and a driving magnet attached to the rotor yoke, and a stator composed of an armature core, an armature coil, and a printed circuit board. And a rotor position signal generating magnet fixedly attached to the lower surface of the driving magnet with the same magnetic pole as the magnetic pole of the driving magnet, and having a phase difference of 120 ° at an electrical angle. To the rotor position signal detection pattern disposed on the printed circuit board of the The.

Description

Rotor position detection device of non-commutator motor

Since this is an open matter, no full text was included.

3 is a cross-sectional view of a three-phase motor having a position signal generating magnet and a position signal detecting pattern as a rotor position detecting element according to the first embodiment of the present invention;

4 (A) is a layout diagram schematically showing the arrangement relationship between the driving magnet, the position signal generating magnet, the armature core and the position signal detection pattern in the three-phase electric motor of FIG.

4B is a waveform diagram of an armature coil current switching control signal produced by shaping a position signal generated from each position signal detection pattern through a waveform shaping circuit;

4 (C) is a torque waveform diagram generated in the three-phase electric motor having a position detecting element according to the first embodiment of the present invention,

5 is a cross-sectional view of a three-phase motor having a different position signal detection pattern and a different position signal generating magnet as a rotor position detecting element according to a second embodiment of the present invention.

Claims (4)

A non-commutator three-phase electric motor including a rotor made of a rotor yoke and a driving magnet attached to the rotor yoke, and a stator made of an armature core, an electric coil, and a printed circuit board, the lower surface of the driving magnet. The rotor position signal generating magnet fixedly attached with the same magnetic pole as that of the driving magnet, and the rotor position signal generating magnet having a phase difference of 120 ° at each electric angle, facing the rotor position signal generating magnet on the printed circuit board. Rotor position detection device for a non-commutator three-phase electric motor, characterized in that consisting of three rotor position signal detection pattern disposed in the. A non-commutator three-phase electric motor including a rotor made of a rotor yoke and a driving magnet attached to the rotor yoke, and a stator made of an armature core, an electric coil, and a printed circuit board, the lower surface of the driving magnet. Triple rotor position signal generating magnet fixedly attached with a phase difference of 120 ° at an electrical angle, three times disposed on the printed circuit board of the faulty body opposite the triple rotor position signal generating magnet without phase difference Rotor position detection device for a non-commutator three-phase motor, characterized in that the pattern consisting of the electronic position signal detection. In a non-commutator two-phase motor comprising a rotor yoke and a rotor made of a driving magnet attached to the rotor yoke, and a stator made of an armature core, an electric coil, and a printed circuit board, the lower surface of the driving magnet. The rotor position signal generating magnet fixedly attached with the same magnetic pole as the magnetic pole of the driving magnet, and the rotor position signal generating magnet having a phase difference of 90 ° at each electric angle, facing the rotor position signal generating magnet on the printed circuit board. Rotor position detection device for a non-commutator two-phase motor, characterized in that consisting of two rotor position signal detection pattern disposed in the. In a non-commutator two-phase motor comprising a rotor yoke and a rotor made of a driving magnet attached to the rotor yoke, and a stator made of an armature core, an electric coil, and a printed circuit board, the lower surface of the driving magnet. Dual rotor position signal generating magnets fixedly attached with a phase difference of 90 ° at an electrical angle, two times disposed on the printed circuit board of the faulty body opposite the dual rotor position signal generating magnets without phase difference Rotor position detection device for a non-commutator two-phase motor, characterized in that the pattern consisting of the electronic position signal detection. ※ Note: The disclosure is based on the initial application.