Method for monitoring the output of an electromechanical actuator of the rotary-linear type
US8314518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2008 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Dec 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for monitoring the output of an electromechanical actuator of the rotary-linear type in order to detect a gradual seizing thereof, wherein said method comprises: measuring the intensity, representative of the motor torque, of the electrical current powering an induction winding of the actuator and the axial stress undergone by an actuator rod; calculating the ratio (axial stress undergone by an actuator rod/motor torque) representative of the global output of the actuator and of its present state; and generating an evaluation of the present condition of the actuator based on its present state and optionally on previous stored states and on outer parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.