Control method of PI controller

Details Control method of PI controller Control method of PI controller

2006-08-01

2006-08-01

Paladini, Albert W. (Department: 2125)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

C700S028000, C318S609000

Reexamination Certificate

active

07085611

ABSTRACT:
A control method of a PI controller which selectively performs a proportional control and a proportional/integral control, the method includes Fourier transforming an output of the PI controller, calculating a spectral energy ratio of the transformed output of the PI controller of at a reference frequency for all frequency regions, performing the proportional control in response to the calculated spectral energy ratio exceeding a predetermined reference ratio, and the proportional/integral control in response to the spectral energy ratio being the predetermined reference ratio or less. Accordingly, a PI controller utilizing the method can easily detect a switching point between a proportional control and a proportional/integral control, independent of species and states of a system thereof.

REFERENCES:
patent: 3946297 (1976-03-01), Bechtel
patent: 4600870 (1986-07-01), Martin
patent: 4743822 (1988-05-01), Futami et al.
patent: 4754391 (1988-06-01), Suzuki
patent: 5157597 (1992-10-01), Iwashita
patent: 5742503 (1998-04-01), Yu
patent: 6198246 (2001-03-01), Yutkowitz
patent: 6326758 (2001-12-01), Discenzo
patent: 6366049 (2002-04-01), Chen et al.
patent: 6822415 (2004-11-01), Komiya et al.
patent: 2003/0153990 (2003-08-01), Boiko
patent: 63-101901 (1988-05-01), None
patent: 02-10197 (1990-01-01), None
patent: 07-036504 (1995-02-01), None
patent: 08-16205 (1996-01-01), None
patent: 09-088685 (1997-03-01), None
patent: 11-276724 (1999-10-01), None
patent: 2000-035119 (2000-02-01), None
patent: 0160714 (1997-03-01), None
Tan et al—“Robust Self-Tuning PID Controller for Nonlinear Systems” —IECON'01 —The 27th Annual Conference of the IEEE Industrial Electronics Society —2001, pp. 758-763.
Swiniarski —“Neural Network Based Self-Tuning PID Controller with Fourier Transformation of Temporal Patterns” —IEEE, 1990. pp. 1227-1232.
Japanese Office Action mailed May 18, 2006 in Japanese Patent Application No.: 2003-332273.

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