Boots – shoes – and leggings
Patent
1994-04-26
1995-06-20
Malzahn, David H.
Boots, shoes, and leggings
36472417, G06F 1531
Patent
active
054265975
ABSTRACT:
An adaptive filter system for use in connection with a reference system t receives an input u(s) and generating in response thereto a reference output y(s) defined by a reference transfer function H(s)=c(sI-A).sup.-1 b+d, where "I" is the identity matrix and matrix A, vectors b and c, and scalar d are reference parameters, and "s" is a variable for the input. The adaptive filter system comprises a system model module, a gradient filter module, an adjustable parameter module, and a parameter adjustment module. The system model module receives the input u(s) and generates in response thereto and in response to a plurality of model parameters matrix A', vectors b' and c', and scalar d, an intermediate model output vector x'(s)=u(s)I-A' and a model output y'(s)=cx'(s)b+d. The gradient filter module receives the intermediate model output vector x'(s) and generates a gradient output vector w(s)=.intg.x'(s)+A'w(s)ds. The adjustable parameter module receives the gradient output vector w(s) from the gradient filter module, x'(s) from the system model module and input u(s) and generates dot products with respective adjustable parameters .alpha., .beta. and .delta. to generate a model adjustment value v'(t). The parameter adjustment module generates adjusted parameters for use by the adjustable parameter module in response to current values of adjustable parameters and an error value e(s)=y(s)-[y'(s)+v'(s)].
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patent: 4843583 (1989-06-01), White et al.
patent: 4989170 (1991-01-01), Batruni et al.
patent: 5058047 (1991-10-01), Chung
patent: 5111418 (1992-05-01), Kummert
patent: 5233635 (1993-08-01), Henriksson et al.
Herchen, Jr. James R.
Lindgren Allen G.
Lall Prithvi C.
Malzahn David H.
McGowan Michael J.
Oglo Michael F.
The United States of America as represented by the Secretary of
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