Apparatus for continuously actively balancing rotors
US5197010A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2122
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for continuously actively balancing rotors by controlling the mass-distribution of a rotor (24) relative to an axis-of-rotation (27) about which the rotor rotates in a stator (26) is disclosed. The mass-distribution of the rotor is adjustable via a hydraulic subsystem (23) that can move the rotor relative to the axis-of-rotation. An electronic subsystem (22) controls the hydraulic subsystem (23) with control signals. More specifically, the sensors (100) of a sensor subsystem (21) sense the repetitive vibrations caused by an unbalanced rotot. The electronic subsystem (22) cyclically updates the control signals applied to the hydraulic subsystem (23) so as to reduce the sensed vibrations, i.e., to balance the rotor (24). The hydraulic subsystem (23) adjusts the position of the rotor (24) by varying the flow of a viscous fluid between the perimeter of a portion of the rotor (24) and an annular sleeve (34) encompassing that portion of the rotor. The annular sleeve (34) rotates with the rotor (24). The rotor (24) is suspended in the annular sleeve by the flowing viscous fluid (40). Ducts (66,70,72,74) in the rotor (24) lead to ports (42,60,62,64) on the rotor through which the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.