Patent · US Active

Closed-loop control device

US9152134B2 · kind B2 · utility

1Cited by

1References

11Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Grieb · Malsch, DE
Lena Lohner · Karlsruhe, DE
Bernd-Markus Pfeiffer · Nieheim, DE

Key dates

Filing date	Oct 5, 2012
Grant date	Oct 6, 2015
Priority date	—
Expiry date	Feb 25, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG05B13/0205
WIPO fieldControl
WIPO sectorInstruments

Abstract

A closed-loop control device for a process, in which a dead band element is connected upstream of a linear dynamic controller to reduce actuating interventions in the steady control state. If a control deviation (e) of the control loop exceeds a first threshold value (s1), then the dead band element is automatically deactivated, where a control deviation (e1) passed via the dead band element is uninfluenced by a set dead band in the inactive state. If the control deviation (e) then undershoots a second threshold value that is less than the first threshold value, then the dead band element is automatically re-activated. This reduces the energy consumption and wear of an actuator and improves the control behavior with regard to steady-state accuracy and the control behavior of the control loop.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.