Method and apparatus for automatically tuning the parameters of a feedback control system
US5974434A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Mar 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H21/0012
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A new technique for adjusting the parameters of a feedback controller. A linear feedback controller includes proportional, integral and derivative (PID) controllers but is not limited to them. The feedback controller may utilize non-linearity in its control and still have its parameters adjusted by this algorithm. The technique involves calculating an error derivative signal, which is the derivative of the processes loops' error with a parameter, for each parameter being adjusted and utilizing these error derivative signals along with error using a modified LMS algorithm. A key aspect of the modified LMS algorithm is the development of the error derivative signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.