Automatic control in power generation, distribution, and by J F Herbst; International Federation of Automatic Control.

By J F Herbst; International Federation of Automatic Control. Technical Committee on Applications

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Additional resources for Automatic control in power generation, distribution, and protection : proceedings of the IFAC Symposium, Pretoria, Republic of South Africa, 15-19 September 1980

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D . of feedback con­ trol algori thms for the superheate r . -5 -10 a) I denti fi cation . Input : PRBS ; Period length N = 3 1 . Clock time A = 1 . S ample time T0 40 sec . 0. Method: COR-LS . 03 [min] 5 -5 f) -10 t f ) State control l e r ( r=0 , 08 ) with observer ( rb= 1 5 , 0) , (SC) The control behaviour i s shown for a reference variable step at k = O and disturbance step at k = 40 min . O [mini 3 PC 3 / -2 PC 2 3 PC3 / 2 PC 2 1 - --: �L---+-- Y )�-t- -== = ==- 20 t. 0 60 [mini t' bl Fig .

Lx R. Isermann ADAPTIVE Y, (K ) 5 Y 1 1Kl 5 C O N T ROL R L S - 1 5 1 / SC R L S - 1 5 1 / SC u1 [%] u1 ( ] % 10 10 -5 a) Open loop identification and following adaptive control . u21b ) % 10 40 60 Adaptive control with setpoint steps w 1 (k) and w 2 (k) at t O and t 3 2 min . __�-----:--· Y2 f R L S - 1 5 1 / SC u1 [%] u, [%] -5 Y ,��[ � u2 [% ] d ) Adaptive control for setpoint steps c ) Adaptive control for a setpoint step w k ) at t w 1 (k) and w 2 (k) at t O after the adap­ 0 after the adaptation { phas e .

6 . 2 Two input/two output ident i f i cation and c . a . d . of parameter optimi zed controllers (Program packages OLID-MIMO , CADCA-MIMO , CAFCA-SI SO) MACS : _liultivariable �daptive _£ontrol �ys tems . 6 . 2 . 1 Two main feedback control lers All packages are based on FORTRAN and have been developed in 1 97 3 - 1 9 80 , varying bet­ ween 8 - 16 k core memory and 2 5 - 60 k disk memory . The two variables sys tem i s s imultaneously excited by a PRBS and a pseudo random quarter­ nary s ignal (both uncorrelated) , Fig .

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