Determining feedback gain

Details Determining feedback gain Determining feedback gain

1994-11-16

1995-12-05

Mai, Tan V.

Boots, shoes, and leggings

364152, 364162, G05B 1302

Patent

active

054735343

ABSTRACT:
A feedback gain determination method permits optimum values of such feedback gains as P, I and D gains to be determined easily, quickly, reliably, and irrespective of the kind of the subject of control. The method comprises a first step of provisionally determining a predetermined value of a feedback gain, a second step of executing feedback control by using the provisionally determined feedback gain, a third step of determining an error between a designated value and an actual value of the subject of control during the execution of the second step, a fourth step of calculating an evaluation value indicative of the character of feedback control according to the error detected in the third step, a fifth step of executing the second to fourth steps repeatedly a plurality of times after provisionally determining a new feedback value different from the previous value, and a sixth step of calculating a feedback gain value which provides for a suitable evaluation value according to the relation between the feedback gain value and the evaluation value obtained through the execution of the fifth step. The method permits easy and quick determination of the proper value of the gain.

REFERENCES:
patent: 4481567 (1984-11-01), Kaya et al.
patent: 4785780 (1988-11-01), Kawai
patent: 5191272 (1993-03-01), Torii et al.
patent: 5347447 (1994-09-01), Kiji et al.
Transactions of the A.S.M.E., vol. 64 (Nov. 1942), J. G. Ziegler and N. B. Nichols, pp. 759-768.

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