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| 11. |
A simple geometrical technique for determining loop frequency response bounds which achieve prescribed sensitivity specifications |
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International Journal of Control,
Volume 30,
Issue 1,
1979,
Page 153-158
L. LONGDON,
D. J. EAST,
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摘要:
A prerequisite to the design of a feedback system which must satisfy a prescribed sensitivity specification when its plant parameters vary within given limits is the determination of the minimum bounds on its loop frequency response for all frequencies of interest, A straight forward geometrical technique is presented which enables these bounds to be constructed using only ruler and compasses. The technique is exact for the case when the plant parameter variations can be represented by a convex polygon (the usual practical approximation) and it is far easier to apply (especially as a computer algorithm) than the trial and error approaches used previously.
ISSN:0020-7179
DOI:10.1080/00207177908922764
出版商:Taylor & Francis Group
年代:1979
数据来源: Taylor
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| 12. |
A non-linear optimal control law for linear systems |
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International Journal of Control,
Volume 30,
Issue 1,
1979,
Page 159-178
JANF. FRANKENA,
RAPHAEL SIVAN,
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PDF (499KB)
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摘要:
In this paper a nonlinear feedback control law will be constructed for a class of linear systems, To this end a. very particular criterion functional is introduced, involving a certainS-norm of the state ||x: ||x||s. When ||x:||s= 0, singular phenomena occur which are considered in detail. It is shown that optimal arcs may end up with a singular trajectory. This problem is considered for n -dimensional linear time-dependent systems with vector control.
ISSN:0020-7179
DOI:10.1080/00207177908922765
出版商:Taylor & Francis Group
年代:1979
数据来源: Taylor
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