Closed-loop control structure for damping low-frequency vibrations
US9081377B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Mar 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49054
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A closed-loop control structure for positioning a load with the aid of an electric motor includes a device for the active damping of unwanted, low-frequency vibrations. The closed-loop control structure has a position controller, a speed controller, and a current controller, which together, form a cascaded control loop. Damping signals which counteract unwanted, low-frequency vibrations are applied to the control loop, at least one first and one second damping signal of different phase angle being derived from a single sensor signal, and the first damping signal being injected between the position controller and the speed controller, and the second damping signal being injected between the speed controller and the current controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.