SU1679177A1 - Transformer-type linear and angular displacement transducer - Google Patents

Abstract

The invention relates to a measurement technique and allows both linear and angular movements of various objects to be measured simultaneously and independently of one another. The aim of the invention is to reduce the overall dimensions of a transformer converter, which contains two hollow coaxially arranged cylindrical magneto conductors 1 and 2, the inner of which is installed with the possibility of linear displacements in the direction of change. The invention relates to measurement technology and allows you to measure simultaneously and independently one the other, both linear and angular displacements of objects used in various industries. The aim of the invention is to reduce the overall dimensions of a transformer converter due to the corresponding mutual arrangement of the gap between them. Wires for measuring the linear displacements are placed on the external radio-frequency 1. On the internal one there are coils for measuring the angular displacements. The internal magnetic conductor 2 is made in the form of two identical cup-shaped elements 5, which are located coaxially with open ends opposite one another and rigidly fastened together by the ends of their cylindrical walls. In the bottoms of the cup-shaped elements 5, a pair of diametrically opposed semi-annular grooves is made to jointly place the corresponding winding sections therein for measuring the angular displacements. The rotor 4 of the sensor, made in the form of a half-disk, is rotatably mounted in the cavity of the internal magnetic core 2, and the primary and secondary sections for measuring linear movements are made semi-circular and placed in pairs of annular grooves on the inner surface of the external cylindrical magnetic circuit 1. 1 Il. its primary and secondary windings for measuring linear and angular movements. Fig. 1 shows a cross section of a transformer for measuring linear and angular movements; Fig. 2 shows the form of its windings for measuring angular displacements. The transformer converter contains two hollow cylindrical magnetic cores mounted in a manner. About V4 Che V4 Vl

Description

The external magnetic circuit 1 is fixed, and the internal magnetic core 2 is placed with the possibility of linear movement in the direction of changing the gap between their cylindrical surfaces, which is carried out with the help of a spring-loaded rod 3. In the cavity of the internal magnetic core 2 is installed with the possibility of rotation ) ferromagnetic rotor 4, made in the form of a half disk. The inner magnetic core 2 is made up of two identical, coaxially mounted cup-shaped elements 5, which face each other with open ends 6 and are rigidly fastened together. In the bottoms of the cup-shaped elements 5, semi-annular grooves are arranged, pairwise symmetrically, to accommodate sections 7, 8, 9, 10 of the primary and 11, 12, 13, 14 secondary windings for measuring the angular displacements. The grooves on the inner surface of the external magnetic core 1 are annular and serve to accommodate the spherical sections 15, 16 of the primary and 17, 18 of the secondary winding. The primary winding sections for measuring linear and angular displacements 15–16, 7–8, 9–10, respectively, 1 are interconnected consistently, and the sections of the secondary windings 17–18, 11–13, 12–14, respectively, are interconnected in series.

Transformer Converter works as follows.

The linear movement X is transmitted through the spring-loaded rod 3 to the internal magnetic circuit 2. Due to this, the width of the air gap between the magnetic cores 1 and 2 in one half of the sensor increases and in the other decreases.

Due to the increase in the magnetic resistance in the first half of the sensor and its decrease in the second half, the inductive voltages in the secondary section 17 decrease, and in section 18 increase. Since these windings are connected by

differential circuit, the output voltage A 1) l will correspond to a linear X displacement.

When the angular / 3 movement of the semi-disk rotor 4 changes, the overlap area of the semi-annular overlays sections placed in the cup-shaped elements 5, due to the change of the magnetic resistance in the path of magnetic flux intersecting the corresponding pairs of sections of the primary and secondary windings for measuring angular displacements, Ally voltages corresponding to the angular / 3 movement of the rotor 4.

Claims (1)

An inventive linear and angular displacement transducer comprising two hollow coaxially arranged cylindrical magnetic cores, the inner of which is mounted for linear displacement in the direction of changing the gap between their cylindrical surfaces, placed in grooves on it primary and secondary windings for measuring angular displacements, placed in the grooves of the external magnetic core primary and secondary windings for measuring linear displacements, each section of which x are diametrically opposed and connected according to or opposite to each other, and a ferromagnetic rotor mounted on the axis of the magnetowires rotatably, characterized in that, in order to reduce overall dimensions, the inner magnetic core is made up of two identical, coaxially mounted cup-shaped elements facing one another open ends, which are rigidly fastened together, the grooves in it are made semicircular and are arranged in pairs symmetrically in the bottoms of the cup-shaped elements s, the grooves in the outer annular magnitoprovo- de performed, and the rotor is designed as a half-disk.