Method and system for controlling phosphate bath constituents

Details Method and system for controlling phosphate bath constituents Method and system for controlling phosphate bath constituents

1995-10-10

1997-05-20

Voeltz, Emanuel T.

Boots, shoes, and leggings

364497, 364500, 364502, 148242, 148253, 148262, 427435, 427 8, 4274431, 427437, G01F 100

Patent

active

056318456

ABSTRACT:
A phosphate bath control system and method is provided that tracks the set points of one or more of the major process variables of the phosphate bath independently of variations in the production conditions. A detector determines the current values of Zinc, Manganese and Total Acid provides data to a controller which exponentially filters the data and processes the filtered data in accordance with fuzzy logic rules. The controller periodically updates the flow rate of one or more pumps that control the flow of liquid concentrates to the bath in order to maintain a desired concentration of the various constituents of the bath. Control of an accelerator is provided by incorporating in the controller an additional algorithm for indirect estimation of the accelerator concentration based on a math model which represents the material balance of the accelerator in the bath.

REFERENCES:
patent: 3401065 (1968-09-01), Steinbrecher et al.
patent: 3516876 (1970-06-01), Hauffe
patent: 3649509 (1972-03-01), Morawetz et al.
patent: 4089710 (1978-05-01), Cooke
patent: 4350717 (1982-09-01), Araki et al.
patent: 4353933 (1982-10-01), Araki et al.
patent: 4374681 (1983-02-01), Schueneman
patent: 4515643 (1985-05-01), Knaster
patent: 4565585 (1986-01-01), Matsuda
patent: 4623554 (1986-11-01), Kaschak et al.
patent: 4692346 (1987-09-01), McBride et al.
patent: 4774101 (1988-09-01), Harris et al.
patent: 4814197 (1989-03-01), Duffy et al.
patent: 4838957 (1989-06-01), Miyamoto et al.
patent: 4897128 (1990-01-01), Dosch et al.
patent: 4914924 (1990-04-01), Takahashi
patent: 4933870 (1990-06-01), Chang
patent: 4961794 (1990-10-01), Miyamoto et al.
patent: 4974209 (1990-11-01), Hoult
patent: 5117370 (1992-05-01), DeCello et al.
patent: 5156013 (1992-10-01), Arima et al.
patent: 5182131 (1993-01-01), Hashimoto et al.
patent: 5248577 (1993-09-01), Jerome
patent: 5336380 (1994-08-01), Phan et al.
patent: 5352350 (1994-10-01), Andricacos et al.
patent: 5368715 (1994-11-01), Hurley et al.
patent: 5410470 (1995-04-01), Yamaoka et al.
patent: 5427313 (1995-06-01), Davis, Jr. et al.
Mizumoto, "Min-max-gravity method versus product-sum-gravity method for fuzzy controls", published in Proceedings of the 4th IFSA Congress, Brussels, 1991, pp. 127-1310.
Yager and Filev, "Essentials of Fuzzy Modeling and Control", published by John Wiley & Sons, Inc., 1994, p. 141.
Dohmann, Edgar, "Fuzzy Logic Control of a Chemical Bath", IEEE, 1994, pp. 958-961.

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