Method for the adaptive adjustment of the control parameters of

Details Method for the adaptive adjustment of the control parameters of Method for the adaptive adjustment of the control parameters of

1994-11-30

1998-03-10

Elmore, Reba I.

Boots, shoes, and leggings

318609, 364162, G05B 1302

Patent

active

057268770

ABSTRACT:
The invention relates to a servo hydraulic force controlled system comprising a cylinder, a control valve and a controller as well as a load defining the controlled system. The optimum setting of the controller is automatically performed by using a fuzzy-set-logic, wherein the characteristics of the controlled system must be not known. According to the invention the step response of the controlled system is evaluated with respect to certain geometrical characteristics by means of a fuzzy classificator communicating with a ruling unit which correspondingly varies the control parameters. According to the invention, certain characteristics of the step response are thus used for the fuzzification and the optimizing procedure takes place in a predetermined setting order.

REFERENCES:
patent: 5043862 (1991-08-01), Takahashi et al.
patent: 5071157 (1991-12-01), Majeed
patent: 5295061 (1994-03-01), Katayama
patent: 5295074 (1994-03-01), Williams
patent: 5310251 (1994-05-01), Towers et al.
patent: 5398303 (1995-03-01), Tanaka
patent: 5497063 (1996-03-01), Day et al.
Andreas Klein, Adaption eines Zustandsreglers mit Hilfe der Fuzzy-Set-Logik, O+P Olhydraulik und Pneumatik, No. 35, 1991, pp. 605-612.
Forschungsfonds, Informationsveranstaltung des Forschungsfonds der Fachgemeinschaft Fluidtechnik im VDMA, O+P Olhydraulik und Pneumatik, No. 37, 1993, pp. 776, 781-783.
Forschungsfonds, Information Session of the Research Fund of the Fluid Technology Group of the VDMA; 1993 (translation).

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