Star-connected sensor
US6731107B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 14, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2360/45
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a rotary assembly comprising a rotor mounted in rotation in a stator about a mean axis of rotation, a radial position sensor comprises three induction sensors distributed in the stator substantially at 120° from one another around the rotor and equidistant from the mans axis of ration. The induction sensors are cabled in star connection with a common connection point, and are powered by a balanced three-phase sinusoidal voltage source with a neutral point. The output voltage, present between the common connection point and the neutral point of the balanced three-phase sinusoidal voltage source, is processed by signal processing means which determine its amplitude and its phase relative to the voltage delivered by the balanced three-phase sinusoidal voltage source. Thus, from only three sensors, two signals are obtained constituting the amplitude image and the angular position of the radial displacement of the rotor gravity axis in the stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.