Magnetorheological fluid brake and control method therefor
US12222012B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 5, 2020 |
| Grant date | Feb 11, 2025 |
| Priority date | — |
| Expiry date | Mar 5, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2125/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetorheological fluid brake and a control method therefor. When braking is not required, the brake does not work, and no field coils are energized. When braking is required and the brake receives a retarding braking signal, a field coil module is energized, the current is gradually increased, an oil port is gradually closed, and a back pressure inside the brake is also gradually increased, thereby gradually increasing a braking force so as to achieve a braking effect. By using the characteristics of a pump and the characteristics of a valve for the magnetorheological fluid, the viscosity of the magnetorheological fluid is adjusted, such that a back pressure is generated in a pump body, which in turn imposes a braking torque on a shaft, thereby performing braking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.