Frequency-domain adaptive controller

Details Frequency-domain adaptive controller Frequency-domain adaptive controller

1998-10-30

2000-06-20

Trammell, James P.

Boots, shoes, and leggings

364157, G05B 1302

Patent

active

060769513

ABSTRACT:
A frequency domain auto-tuning and continually adapting control regulating apparatus is applied to a linear stable process. A FFT based identification is applied to non-transformable samples of transient signals to obtain simultaneous and accurate multiple-point estimates of a frequency domain approximation of the process transfer function as an estimate of a frequency response. A linear least squares multiple-point-fitting process provides regulator design parameters. A multiple-point-fitting transfer function modeling process is disclosed, and an adaptive regulator design process is applied to compensate for changes in the process set-point or for load disturbances. In addition, techniques are provided for auto-tuning of multivariable regulators.

REFERENCES:
patent: 4616308 (1986-10-01), Morshedi et al.
patent: 5587899 (1996-12-01), Ho et al.

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