DESIGN OF NUCLEAR REACTOR CONTROL SYSTEM WITH TIGHT FEEDBACK

Abstract

The present work covers the design of Nuclear Reactor Control System with tight feedback~ The design uses the modified form of the Sequential Return Difference (SRD) t'ethod; The SRD method is modified to reduce compu~ tational work and, hence) make the algorithm faster,, Sequential return difference method gives a satisfactory closed.:loop linear system via a sequence of single loop designs, The stability of the resulting system may be checked by classical techniques such as Routh Hurqitz Criterion, Nyquist Criterion or Root locii. Here, as the number of equations to be checked for stability is very large, Routh Hurwitz criterion is utilized. In the Ist Chapter return difference and return ratio matrices are discussed, and how these are useful in the synthesis is given as a background for the SRD method. Second Chapter describes the SRD method. Modified transfer function matrix achieved from the SPLD method is checked for step input. 1ll the output are given in the end. The SIRD method is found to give good controller designs using only single--input single-output classical (well established) design techniques in the frequency domain. This poverful method can be fruitfully used to design complex systems if inter-active computer graphic terminals are available. In this work, however, only IBM 1620 with punched output facility was available and inordinately long CPU time ( this computer is very slow-0 tines slower than I31•I 360) was involved. Computer programs in FORTRAN II were developed for (a) Sequential Return difference algorithm (b) Routh