| 21. |
Frequency-domain reduction of linear systems using Schwarz approximation |
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International Journal of Control,
Volume 37,
Issue 5,
1983,
Page 1167-1178
T. N. LUCAS,
A. M. DAVIDSON,
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摘要:
A frequency domain approach for reducing linear, time-invariant systems is presented which produces stable approximations of stable systems. The method is based upon the Schwarz canonical form and is shown to have a continued-fraction representation. A link between this method and the popular Routh approximation is also given. Further, the Schwarz approximation is combined with a moments-matching technique to improve steady-state responses to step and polynomial inputs. Examples are given to illustrate the methods.
ISSN:0020-7179
DOI:10.1080/00207178308933038
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 22. |
The inverse internal model† |
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International Journal of Control,
Volume 37,
Issue 5,
1983,
Page 1179-1190
M. G. PEDRO,
S.J FERREIRA,
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摘要:
The paper studies the servo problem when a disturbance signal is applied at the compensator's input. It is shown that the compensator must provide an ‘ inverse internal model’ (defined in a precise sense) of the disturbance signal besides the (direct) internal model of the signal to be tracked.
ISSN:0020-7179
DOI:10.1080/00207178308933039
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 23. |
Comments on ‘ An efficient algorithm for a time-suboptimal regulator problem for systems with delay in state ’ |
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International Journal of Control,
Volume 37,
Issue 5,
1983,
Page 1191-1193
P. GUERCHET,
A. M. WAHDAN,
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摘要:
In this comment, it is shown that the algorithm developed to solve a problem of bounded-variable programming (BLP), by Kim and Bien (1981), includes some errors and some details are missing. Here, a modified algorithm is proposed.
ISSN:0020-7179
DOI:10.1080/00207178308933040
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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| 24. |
Comments on ‘ Commutativity of second-order time-varying systems ’ |
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International Journal of Control,
Volume 37,
Issue 5,
1983,
Page 1195-1196
S. V. SALEHI,
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摘要:
The conditions for commutativity of two second-order time-varying systems presented recently (Köksal 1982) are shown not to be necessary. Necessary and sufficient conditions are presented for the commutativity of two time-varying systems, from a certain class of systems of order not greater than two.
ISSN:0020-7179
DOI:10.1080/00207178308933041
出版商:Taylor & Francis Group
年代:1983
数据来源: Taylor
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