High speed auto-tuning loop

Details High speed auto-tuning loop High speed auto-tuning loop

2003-02-28

2009-02-24

Harper, Kevin C (Department: 2616)

Multiplex communications

Diagnostic testing

C700S037000

Reexamination Certificate

active

07496041

ABSTRACT:
An auto-tuner is adapted to be used in a distributed process control network having a communications network that communicatively couples a process controller, which executes a process control routine, and one or more process devices used in a process control loop. The auto-tuner includes a first tuning element configured to cause a control entity to force the process loop to undergo an auto-tuning procedure and a tuning data stack operating within one of the process devices to receive and store a tuning signal associated with the control entity along with a time stamp indicating the time the tuning signal was acted on by the device. A measurement data stack is disposed in the same or a different process device and operates to receive and store a response or measurement signal generated by the process device along with a time stamp indicating when the response signal was generated or detected. A second tuning element which may be, for example, in a controller or a workstation, periodically receives data from the tuning data stack and the measurement data stack and determines a tuning parameter to be used in tuning the process loop.

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Search and Examination Report under Sections 17 & 18(3) issued in GB 0404322.0 application by the United Kingdom Patent Office on Jul. 15, 2004.
Office Action for corresponding Chinese Application No. 2004100067703.

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