Research Article

Optimal Tuning of Decentralized PI Controller of Nonlinear Multivariable Process Using Archival Based Multiobjective Particle Swarm Optimization

Table 7

Violation variables under coal quality change (±18%) ( : the variable reaches its upper limit; : the variable reaches its lower limit).

Load100%50%0%
Disturbance typeSineStepSineStepSineStep

Coal quality  Char Char Char Within
limits
WStm  Within
limits
increase (+18%)T gas

Coal quality  Coal Coal Within
limits
Coal Pgas Char
decrease (−18%)T gas WStm