Industry Patents
Patent: 11774075
Absolute Position Sensing System for Stepper Motor Mechanism
(Click image for PDF of full patent)
| Patent Number: |
11774075 |
| Title: |
Absolute Position Sensing System for Stepper Motor Mechanism |
| Abstract: |
A luminaire includes a luminaire mechanism, a stepper motor, an absolute multi-turn rotational position sensing system, and a control system. The stepper motor moves the luminaire mechanism. The absolute multi-turn rotational position sensing system includes absolute rotational sensors that detect absolute positions of a cam indexer on the motor shaft and an indexer wheel coupled to the cam indexer. The indexer wheel rotates by a predetermined amount in response to one full rotation of the cam indexer. The control system determines an absolute position of the luminaire mechanism based on information from the absolute rotational sensors relating to the positions of the cam indexer and the indexer wheel. The control system receives a commanded position for the luminaire mechanism and causes the stepper motor to move the luminaire mechanism to the commanded position based on the absolute position of the luminaire mechanism. |
| Country of Issue: |
US |
| First Named Inventor: |
Jurik, Vavrik, Valchar |
| Assignee: |
Robe Lighting |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 21/15 |
| US Classification: |
F21V 21/15 |
| Issue Date: |
10-03-2023 |
| Filing Date: |
03-31-2022 |
| Application : |
17/710271 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
11774075 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
11774075 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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