Angle-measuring device and method for operating an angle-measuring device
AssigneeDr. Johannes Heidenhain GmbH
InventorsIngo Joachimsthaler, Thomas Geisler
Life of this patent
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Abstract
An angle-measuring device includes a housing and a position sensor configured to generate angle values indicating an angular position of a shaft with respect to a reference position. An interface is configured to communicate with subsequent electronics via a data channel. At least one imbalance sensor is configured to generate an imbalance signal from imbalance-induced excursions of the shaft. An imbalance analyzer is configured to generate imbalance values from the imbalance signal. A signal processor is configured to generate imbalance information from the angle values and the imbalance values. The imbalance information is transmittable through the interface to the subsequent electronics.
Claims19
An angle-measuring device comprising:
- a housing;
- a shaft rotatably supported in the housing by a bearing, the shaft being mechanically rigidly coupleable by a connector to a shaft of a machine, a portion of the bearing that is stationary with respect to the shaft being mechanically flexibly connected to the housing via a coupling;
- a position sensor configured to generate angle values indicating an angular position of the shaft with respect to a reference position;
- an interface configured to communicate with subsequent electronics via a data channel;
- at least one imbalance sensor configured to generate an imbalance signal from imbalance-induced excursions of the shaft;
- an imbalance analyzer configured to generate imbalance values from the imbalance signal;
- and
- a signal processor configured to generate imbalance information from the angle values and the imbalance values, the imbalance information being transmittable through the interface to the subsequent electronics.
A method for operating an angle-measuring device, the method comprising:
- generating, by a position sensor of the angle-measuring device, angle values indicating an angular position of a shaft with respect to a reference position,
- generating, by an imbalance analyzer of the angle-measuring device, imbalance values from an imbalance signal produced by at least one imbalance sensor of the angle-measuring device, the imbalance values being a measure of the imbalance-induced excursion of the shaft,
- feeding the angle values and the imbalance values to a signal processor of the angle-measuring device,
- generating, by the signal processor based on the angle values and the imbalance values, the imbalance information which includes at least a phase relation of the imbalance signal with respect to the reference position and an amplitude of the imbalance signal,
- wherein the shaft is rotatably supported in a housing of the angle-measuring device by a bearing and is mechanically rigidly coupled by a connector to a shaft of a machine, and
- wherein a portion of the bearing is stationary with respect to the shaft and is mechanically flexibly connected to the housing via a coupling.
Dependencies are inferred from the claim text.