Position-Measuring Device and Method for Operating the Position-Measuring Device
First Claim
1. A position-measuring device, comprising:
- a measuring standard;
a scanning unit adapted to scan the measuring standard for position-determination;
a rotary bearing by which the measuring standard or the scanning unit is rotationally mounted, so that the measuring standard and the scanning unit are rotatable in relation to each other when the position-measuring device is in operation, the scanning unit adapted to generate output signals, on which an angle or rotation associated with the relative movement of the measuring standard and the scanning unit is determinable; and
a monitoring device adapted to monitor the rotary bearing for occurrence of bearing faults;
wherein the monitoring device is adapted to detect and analyze at least one measured variable for a plurality of different relative positions of the measuring standard in relation to a detector device of the scanning unit, in order to determine deviations from a setpoint behavior of the measured variables on the basis of the measured variable detected for a plurality of relative positions.
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Accused Products
Abstract
A position-measuring device includes a measuring standard, a scanning unit, and a rotary bearing by which the measuring standard or the scanning unit is rotationally mounted. The measuring standard and the scanning unit are rotatable in relation to each other. The scanning unit generates output signals, on the basis of which a rotary angle associated with the relative motion of the measuring standard and the scanning unit is able to be determined. A monitoring device monitors the rotary bearing for the occurrence of bearing faults and is adapted to detect and analyze at least one measured variable for a plurality of different relative positions of the measuring standard in relation to the scanning unit, in order to determine deviations from a setpoint behavior of the measured variables on the basis of the measured variable detected for a plurality of relative positions.
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Citations
17 Claims
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1. A position-measuring device, comprising:
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a measuring standard; a scanning unit adapted to scan the measuring standard for position-determination; a rotary bearing by which the measuring standard or the scanning unit is rotationally mounted, so that the measuring standard and the scanning unit are rotatable in relation to each other when the position-measuring device is in operation, the scanning unit adapted to generate output signals, on which an angle or rotation associated with the relative movement of the measuring standard and the scanning unit is determinable; and a monitoring device adapted to monitor the rotary bearing for occurrence of bearing faults; wherein the monitoring device is adapted to detect and analyze at least one measured variable for a plurality of different relative positions of the measuring standard in relation to a detector device of the scanning unit, in order to determine deviations from a setpoint behavior of the measured variables on the basis of the measured variable detected for a plurality of relative positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for operating a position-measuring device, comprising:
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scanning a measuring standard by a scanning unit for a position measurement while the measuring standard and the scanning unit are rotated with respect to each other by a rotary bearing; checking the rotary bearing for bearing faults by a monitoring device while the position-measuring device is in operation; detecting and analyzing, by the monitoring device, at least one measured variable for a plurality of different relative positions of the measuring standard in relation to detection means of the scanning unit, in order to determine deviations from a setpoint behavior of the measured variables on the basis of the measured variable detected for a plurality of relative positions. - View Dependent Claims (16, 17)
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Specification