Oversampling PID controller for integration with a...

Details Oversampling PID controller for integration with a... Oversampling PID controller for integration with a...

2008-03-19

2010-02-16

Barnie, Rexford N (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Converter is part of control loop

C341S143000

Reexamination Certificate

active

07663521

ABSTRACT:
An embodiment of the invention relates to a controller that includes a delta-sigma modulator to produce a one-bit, oversampled signal representing a measured characteristic of a process, and a delta-sigma modulator to produce a one-bit, oversampled signal representing a set-point value for the characteristic. A multiplexer selects a partial sum based on a difference of the oversampled signals to produce a control signal for the process. The controller that produces the control signal for the process can be a PID controller.

REFERENCES:
patent: 2004/0036640 (2004-02-01), Kawamura
patent: 2006/0172783 (2006-08-01), Leung et al.

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