Drive system in a geodetic measurement instrument
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United States of America Patent
Stats
-
Jun 25, 2024
Grant Date -
Feb 25, 2021
app pub date -
Aug 20, 2020
filing date -
Aug 21, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A geodetic surveying instrument to move a measurement light beam into a desired measurement direction in space, comprising at least one movement axis which is motorized, providing a positioning of the measurement direction of the geodetic surveying instrument, and an instrument-encoder at the movement axis configured for deriving the measurement direction as a measurement value of the geodetic surveying instrument. The geodetic surveying instrument comprises a transmission link of the movement axis of the geodetic surveying instrument to a motor axis of a stepper motor, which transmission link is configured with a gear reduction and a slipping clutch arrangement, and wherein the stepper motor comprises a rotational motor-encoder on its motor-axis and is driven by a motor controller that provides a field oriented control of phase currents of the stepper motor, which field orientation is derived based on the rotational motor-encoder.
First Claim
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International Classification(s)
- 2020 Application Filing Year
- B25B Class
- 771 Applications Filed
- 521 Patents Issued To-Date
- 67.58 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B25B Class
- 0 % this patent is cited more than
- 1 Age
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