HOISTING MACHINE INCLUDING A MEASURING ARRANGEMENT AND ELEVATOR SYSTEM CONTAINING THE SAME
First Claim
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1. A measuring arrangement for the measurement of the position and/or movement of the rotor of an electric machine, comprising:
- a magnetic band, the magnetic property of said magnetic band being so implemented that the magnetic property varies in a longitudinal direction of the band,wherein the magnetic band is attached to a rotating part of the electric machine, so that the magnetic band is fitted to revolve about a rotational axis of the rotor, andwherein the measuring arrangement comprises a reader which senses the magnetic property varying in the longitudinal direction of the magnetic band, said reader being mounted on a stationary part of the electric machine in the immediate vicinity of the magnetic band.
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Abstract
A measuring arrangement for the measurement of the position and/or movement of a rotor of an electricmachine, an electric drive including the measuring arrangement, and an elevator system including the electric drive are provided. The measuring arrangement includes a magnetic band whose magnetic property is so implemented that it varies in the longitudinal direction of the band.
19 Citations
13 Claims
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1. A measuring arrangement for the measurement of the position and/or movement of the rotor of an electric machine, comprising:
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a magnetic band, the magnetic property of said magnetic band being so implemented that the magnetic property varies in a longitudinal direction of the band, wherein the magnetic band is attached to a rotating part of the electric machine, so that the magnetic band is fitted to revolve about a rotational axis of the rotor, and wherein the measuring arrangement comprises a reader which senses the magnetic property varying in the longitudinal direction of the magnetic band, said reader being mounted on a stationary part of the electric machine in the immediate vicinity of the magnetic band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification