SU382184A1 - DEVICE FOR DETERMINATION OF THE ANGLE OF INSTALLING THE COLLECTOR ON THE ANCHOR OF THE ELECTRIC MACHINE - Google Patents

Description

one

The invention relates to the field of electric machines and can be used in devices for monitoring Korean small electric machines.

A device for determining the angle of installation of a collector on the cortex of an electric machine, comprising a power source, a sensor made in the form of a three-core core with a winding and a middle rod, and w, wires are known.

The proposed device differs from the known one in that it is equipped with an additional drive, controlled by the sensor signals and driving one of the elements of the device, which determines the angle of the collector.

Brushes and a sensor mounted on a traverse mechanically associated with the drive can be used as such a rotating element, which greatly improves the accuracy of determining the angle of the collector.

FIG. 1 shows the proposed device with movable brushes; in fig. 2 - device with a movable sensor.

The device includes a generator / alternating current, supplying current through the capacitor 2 to one of the two windings of the two-phase electric motor 3. In addition, the generator directly feeds two brushes 4 mounted on the traverse 5 mounted rotatably around the axis 5. Sensor 7 is designed as a three-core core with a winding 8 i-ia middle rod connected to the input of the amplifier 9. The output of the latter includes the second winding of the electric motor 3, designed to rotate the crosshead 5 by means of mechanical transmission 7 (9 a. the angle whose value is counted

with an arrow // on a scale /.2.

The electric motor / 5 reports by means of a mechanical transmission / uniform rotation of the bore, which has a winding 15, and its conclusions are attached to adjacent plates

collector 16.

The sensor 7 can be placed on the rotary traverse / 7 (Fig. 2).

Device for determining the angle of installation of the collector on the electrical machine core

works as follows.

The measles to be tested is placed in a device for determining the angle of installation of the collector and connected by means of a mechanical transmission 14 to an electric motor / 5.

Brushes 4 impose on the surface of the collector / 5 and include an electric motor / 5, evenly rotating the test measles. The alternating current coming from the generator / flows alternately through each section.

winding 15 core and induces in the winding

8 ed. c., the phase of which depends on the current position of the groove of the core with the next section fed by alternating current, relative to the middle sensor rod.

If the brushes 4 with the crosspiece 5 and the arrow // are rotated so that the arrow 11 on the scale 12 shows the angle corresponding to the angle of the collector 16, then in the winding 8 they are alternately induced by the edg. with., protivoBSSlszhnyh phases and equal amplitudes and durations, compensating on average one another in time. If there is a discrepancy between the angle measured on the slit 12 and the effective angle of the collector 16, then the emf induced in the winding 8 is dominated by the phase corresponding to the shear direction of the collector 16 relative to the arrow 11 on the scale 12.

Average in time emf in the winding 8 has a phase and amplitude corresponding to the angle of shear of the collector 16. Inductable in the winding 5 ed. with. amplified by amplifier 9 and fed to the second winding of a two-phase electric motor 3, the first winding of which is powered by a generator / through a capacitor 2, which shifts the current through it by 90 °. In the electric motor 3, a magnetic field arises, alternately rotating in one or the other direction in accordance with phase e. D., induced in the winding 8. Due to the inertia of the rotor of the electric motor 3, it does not have time to follow the change of the direction of rotation of the magnetic field and remains stationary with time compensated ed. with. winding 8 or rotates in the appropriate direction when any phase prevails. The direction of rotation of the electric motor 3 is such that it turns the yoke 5 with

brushes 4 in the direction of reducing the predominance of phase ed. in the winding 8, after which the rotation of the electric motor 3 is stopped. In this case, arrow 11 shows 5 on a scale of 12 the installation angle of the iia collector bark of the electric machine.

In the case when sensor 7 is placed on the rotary beam 17, the device operates in the same way. Wherein

0, the yoke 17 s ditch 7 also rotates to full compensation of the emf. p., induced in the winding 8. At the same time, an arrow // indicates on a scale 12 a collector's installation angle on the bark of an electrical maschine.

Subject invention

Claims (3)

1.Device to determine the angle of installation of the collector on the electrical cortex Maschiny, containing a power source, a sensor made in the form of a three-core core with a winding on the middle rod, and a brush, characterized in that, in order to detect the accuracy of determining the angle of installation of the collector, the device is equipped with an additional drive controlled by the sensor signals and motion is one of the elements of the device that defines the angle 0 collector installation. 2. A device according to claim 1, characterized in that brushes mounted on a traverse mechanically connected to the drive are used as the rotary element. 3. A device according to claim 1, characterized in that a sensor mounted on a traverse mechanically associated with the actuator is used as the rotating element.