Boots – shoes – and leggings
Patent
1989-08-31
1991-10-08
Ruggiero, Joseph
Boots, shoes, and leggings
264 407, 425141, 425162, G06F 1546
Patent
active
050560301
ABSTRACT:
In an apparatus for use in carrying out decoupling control of a T-die which has a pair of lip portions with a gap extended between the lip portions and with the lip portions divided into a plurality of zones individually driven by driving devices, respectively, a processing circuit individually controls the driving devices by the use of a predetermined decoupling control algorithm. The predetermined decoupling algorithm is given by a plurality of desired displacement vectors of the gap for the respective zones and a decoupling control matrix defined by inverse numbers of products of a command value/driving pressure converting matrix (Kp) and a driving pressure/displacement converting matrix (K.alpha.). Alternatively, the decoupling control matrix is repeatedly modified with time to decrease a difference between the desired gap displacement (.DELTA.y) and the measured gap displacement (.DELTA.y.sub.m). Each command voltage value vector .DELTA.u of the command value/driving pressure converting matrix is compensated by the use of a figurative inherent error of the lip structure.
REFERENCES:
patent: 3612839 (1971-10-01), DeWitt et al.
patent: 4861409 (1989-08-01), Hashida et al.
Ruggiero Joseph
Sumitomo Heavy Industrie's, Ltd.
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