Suspension device having electric actuator and spring in parallel
US6708094B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Mar 24, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/182
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle suspension device for controlling the vertical deflection between a suspended mass and a non-suspended mass, including an elastic link mounted between the suspended mass and the non-suspended mass, the said elastic link embodying a spring, a reversible electric actuator acting in parallel with the spring for controlling the relative-deflection movements between suspended mass and non-suspended mass, Zcr being the distance between the suspended mass and the non-suspended mass, and means for controlling the electric actuator, from an observed variation of the distance Zcr between the suspended mass and the non-suspended mass due to a deflection of the elastic link, in order that the electric actuator develops a force F having a mass compensation component F1=Ca·Mr·Acr oriented like the acceleration Acr of the deflection of the non-suspended mass with respect to the suspended mass, with Mr being the non-suspended mass and Ca a coefficient, and having a damping component F2=−Cv·Vcr opposing the speed Vcr of the said deflection, Cv being a coefficient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.