Magnetic suspension type quasi-zero stiffness electromagnetic vibration isolator with active negative stiffness
US11624419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2021 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Oct 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1692
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The disclosure provides a magnetic suspension type quasi-zero stiffness electromagnetic vibration isolator with active negative stiffness. The disclosure relates to the technical field of vibration control. The disclosure can selectively realize passive negative stiffness and active negative stiffness by adjusting the control mode of a controller. By adopting an amplifying mechanism and DIESOLE type electromagnets, the bearing capacity of the vibration isolator is further increased, and the disclosure is suitable for the field of ultra-low frequency heavy load vibration reduction and isolation. The displacement state of a negative stiffness mechanism can be measured in real time according to a sensor, and by means of cooperation of the controller and a driver, active negative stiffness is realized, real-time linear negative stiffness is realized, the multi-stable phenomenon is avoided, and complex dynamic phenomena such as jumping during working of the vibration isolator are prevented. The active negative stiffness is realized, the current passing through the system can be adjusted according to different working conditions, and the system has strong self-adaptive ability, can be ap…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.