Closed-loop control method for an energy absorber
US9126625B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | May 10, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/305
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Closed-loop control of an energy absorber acting as a damper between two parts that are movable relative to one another. A damping force of the energy absorber, or damper, can be adjusted by way of the change in the viscosity of a magnetorheological fluid (MRF), which change can be influenced by a magnetic field of a coil. According to the method it is possible to decelerate an impact or a movement with the lowest possible forces in order to minimize possible consequential damage/loading by way of setting as constant a deceleration as possible, as small a deceleration as possible, by way of using the entire available deceleration travel, and low or zero residual speed at the end of the deceleration travel independently of the moving mass or speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.