SU423155A1 - CONVERTER "ANGLE - CODE" - Google Patents

Description

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The device relates to discrete systems of automatic control and regulation.

Angle-code converters are known, containing a motor, on whose shaft a rotor of a mechanical pulse generator and a leash is fixed, a fixed sensing head, made in the form of a coil, inside which there is a permanent magnet and a core, a movable sensing head and a L-shaped shaft.

The disadvantages of the known converters are the non-linearity of the conversion in the zero zone and the dependence of the conversion accuracy on the accuracy of manufacturing the device parts.

The proposed converter is characterized in that the movable sensitive head is made in the form of an annular coil, inside which a permanent magnet is fixed at the end of the L-shaped shaft, and the leash is provided with ferromagnetic shields, one of which is located against the fixed sensitive head and the other against the end of the annular coil and permanent magnet moving sensitive head. This embodiment made it possible to reduce the non-linearity of the conversion in the zero zone and to reduce the dependence of the conversion accuracy on the accuracy of manufacturing the parts of the structure.

which increased the accuracy of the device as a whole.

The drawing schematically shows the proposed Converter.

The angle-code converter contains a read head 1, an electric motor 2, on the shaft of which a fine-modular gear 3 and a nozzle 4 with ferromagnetic shields 5 and 6, a housing 7, a fixed sensing head, consisting of a coil 8, a permanent magnet 9 and a core 10, are mounted. , movable sensitive head, consisting of an L-shaped shaft 11, a coil 12 and a constant l agnita 13. A L-shaped shaft 11

articulates with a shaft, the angle of rotation of which is measured.

When the gear 3 rotates in the read head 1, voltage pulses are induced. Simultaneously with the gear 3, the ferromagnetic screens 5 and 6 rotate, which pass by the core 10 and the L-shaped bend of the shaft 11. The screen 5, passing by the core 10, changes the magnetic flux in the coil 8 created by the permanent magnet 9. Then

coil 8 is energized. Similarly, a voltage pulse is induced in the coil 12 when screen 6 passes past the permanent magnet 13.

The number of pulses coming from the output of the magnetic head 1 between pulses

in coils 8 and 12 for one revolution of the motor shaft, proportional to the angle of rotation of the input shaft 11.

Subject invention

An angle-code converter containing a motor, on whose shaft a rotor of a mechanical generator of impulses and a nozzle is fixed, a fixed sensing head, made in the form of a coil, inside which there is a permanent magnet and a core, a movable sensing head and an L-shaped input shaft, distinguished by that, in order to increase the accuracy of the device, the movable sensitive head is made in the form of a ring-shaped coil, inside which a permanent magnet is fixed at the end of the L-shaped input shaft provided with docking ferromagnetic screens, one of which is fixed nrotiv sensing head, and the second - against the annular end face of the coil and the permanent magnet movable sensing head.

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