Control circuit for regulating at least two controlled variables
US6430452B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 14, 1999 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Jun 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B11/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and circuit for controlling a controlled variable by a closed-loop control circuit comprising at least two controllers and a control device with a reference stage and a controlled system generating the controlled variable. The reference stage is supplied with a reference variable, which determines the set point of the controlled variable, the maximum value of which is predefined as a function of the control limits of the control device formed as the sum of the control limits of the controllers of the control device. A first controller of the control device is provided with a control deviation, which is formed as the difference between the reference variable and the actual value of the controlled variable. The other controllers of the control device are provided with a control deviation, which is formed, respectively, as the difference between the control deviation of the respective preceding controller and the actual value of the controlled variable of the additional controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.