Actuator driving method
US5378972A · kind A · utility
4Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1993 |
| Grant date | Jan 3, 1995 |
| Priority date | — |
| Expiry date | Apr 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D57/032
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for driving an actuator for displacing a mechanism connected thereto to a target displacement and holding it there against static load, wherein the internal friction force is utilized for holding the displacement, thereby reducing the actuator load and energy consumption. Command value of the actuator is once directed above the target displacement with respect to the direction of gravity so as to cause the internal friction force to act in the direction opposite to the static load. For that purpose, the command value is varied by adding a bias or by changing a gain to be multiplied thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.