Investigation of a suboptimal controller design for a nuclear reactor system.

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Author
Matsuda, Mutsuhiro
Date
1975-03Advisor
Gerba, A. Jr.
Second Reader
Nguyen, Dong H.
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Show full item recordAbstract
The optimal control problem of a typical nuclear reactor
power plant, which is described by a ninth-order nonlinear
differential equation, having time-varying parameters, is
considered. The nonlinear model complicates the optimal
controller synthesis. Therefore, the approach of this work
is to approximate the response of the reactor system by
that of a second-order linear model. The model parameters
are chosen to minimize the derivations between the system
and model responses using a search routine. The optimal
feedback parameters computed for the second-order model 5s
used for suboptimal control of the system. The model parameters
are updated to reflect the system nonlinearities as
well as changes in the system parameters; the corresponding
control scheme is adaptive. It is shown that for the operating
conditions considered, the adaptive controller need not
be on-line.
Also, investigation of the effects of different weighting
factors in the cost function, and the effect of various control
rod configurations on the system response are presented.
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