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2 061 299

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IPC

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Application

5031561/07, 1992-03-10

(22)

Actual filing date

1992-03-10

(45)

Published

1996-05-27

(72)

Inventor

Brodovskij V.N.Zheljabovskij A.A.Karzhavov B.N.Rybkin Ju.P.Sinev V.I.

(73)

Holder

Tsentral'Nyj Nauchno-Issledovatel'Skij Institut Avtomatiki I Gidravliki

ELECTRIC DRIVE Russian patent published in 1996 - IPC

Abstract RU 2061299 C1

FIELD: load speed or angular position control systems. SUBSTANCE: electric drive has m-phase synchronous motor with three-phase system of Hall-effect sensors and m-phase frequency changer with control unit; in addition, it is provided with series-connected three-phase rectangular-pulse shaping unit and approximator unit in the form of U-shaped resistive circuit in each phase and common inverting amplifier. Relation between transfer ratio over longitudinal line of each U-shaped circuit and circuit incorporating operational amplifier, which is connected in parallel to the former. is 3:1. EFFECT: improved control characteristics due to elimination of the effect of variation and drift of Hall-effect sensor parameters. 4 cl, 2 dwg

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RU 2 061 299 C1

Authors

Brodovskij V.N.

Zheljabovskij A.A.

Karzhavov B.N.

Rybkin Ju.P.

Sinev V.I.

Dates

1996-05-27—Published

1992-03-10—Filed

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