EP0899638A2
Expired / Lapsed
EP
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Control system for plants
Assignee: Honda Motor Co Ltd
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Filing: 1998-08-27
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Granted: —
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Expires: 2018-08-27
Abstract
Abstract A control system for a plant includes a sensor (17,18) for detecting an output from the plant, an adaptive controller (5) for controlling a manipulated variable applied to control of the plant in a manner such that an output from the sensor becomes equal to a desired value, and an adaptive parameter vector-adjusting mechanism for adjusting an adaptive parameter vector used by the adaptive controller. The adaptive parameter vector-adjusting mechanism is constructed such that an updating component for updating the adaptive parameter vector is added to an initial value of the adaptive parameter vector, and updates the adaptive parameter vector by multiplying at least part of preceding values of the updating component by a predetermined coefficient which is larger than 0 but smaller than 1.
Inventors
- 👤 Yuji Yasui
- 👤 Yusuke Hasegawa
- 👤 Yoshihisa Iwaki
- 👤 Hiroshi Kitagawa
- 👤 Shusuke Akazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
G; G05; G05B; G05B13/00; G05B13/02; G05B13/04; G05B13/042; F; F02; F02D; F02D41/00; F02D41/02; F02D41/14; F02D41/1401; F02D41/1402; F02D41/1438; F02D41/1444; F02D41/1454; F02D41/1456; F02D41/24; F02D41/2406; F02D41/2425; F02D41/2429; F02D41/2451; F02D41/2454; F02D41/2477; F02D2041/1413; F02D2041/1415; F02D2041/1418; F02D2041/143; F02D2041/1433; F02D41/2483
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
In a control system for a plant, including
detection means for detecting an output from said
plant, an adaptive controller for controlling a
manipulated variable applied to control of said plant
in a manner such that an output from said detection
means becomes equal to a desired value, and adaptive
parameter vector-adjusting means for adjusting an
adaptive parameter vector used by said adaptive
controller, the improvement wherein: said adaptive parameter vector-adjusting means is
constructed such that an updating component for
updating said adaptive parameter vector is added to an
initial value of said adaptive parameter vector, said
adaptive parameter vector-adjusting means updating
said adaptive parameter vector by multiplying at least
part of preceding values of said updating component by
a predetermined coefficient which is larger than 0 but
smaller than 1.
Claim 2
Dependent Claim
29 words
A control system as claimed in claim 1,
wherein said adaptive parameter vector-adjusting means
does not multiply said initial value of said adaptive
parameter vector by said predetermined value.
Claim 3
Dependent Claim
27 words
A control system as claimed in claim 1,
wherein said adaptive parameter vector-adjusting means
multiplies said initial value of said adaptive
parameter vector by said predetermined value.
Claim 4
Dependent Claim
44 words
A control system as claimed in any of claims
1 to 3, wherein said adaptive parameter vector-adjusting
means does not multiply an element of said
adaptive parameter vector which is applied as a
divisor term for determining said manipulated
variable, by said predetermined coefficient.
Claim 5
Dependent Claim
24 words
A control system as claimed in claim 4,
wherein said adaptive parameter vector-adjusting means
sets said element of said adaptive parameter vector to
1.
Claim 6
Dependent Claim
36 words
A control system as claimed in any of claims
1 to 3, wherein said adaptive parameter vector-adjusting
means sets elements of said predetermined
coefficient to respective predetermined values larger
than 0 but smaller than 1, respectively.
Claim 7
Dependent Claim
36 words
A control system as claimed in any of claims
1 to 3, wherein said adaptive parameter vector-adjusting
means sets elements of said predetermined
coefficient to an identical predetermined value larger
than 0 but smaller than 1.
Claim 8
Dependent Claim
74 words
A control system according to any of claims 1
to 3, wherein said plant is an internal combustion
engine having an exhaust system, said detection means
being air-fuel ratio-detecting means arranged in said
exhaust system, for detecting an air-fuel ratio of an
air-fuel mixture supplied to said engine, said desired
value being a desired air-fuel ratio of said air-fuel
mixture, said manipulated variable being an amount of
fuel to be supplied to said engine.
Claim 9
Dependent Claim
34 words
A control system according to claim 8,
wherein said manipulated variable is calculated as a
correction coefficient for correcting a basic fuel
amount corresponding to an amount of intake air
supplied to said engine.
References Cited (Backward Citations)
No citation records indexed.
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