UNSTABLE SUBOPTIMAL PERIODIC CONTROL OF A CERTAIN CHEMICAL REACTOR.

The suboptimal periodic control of a CSTR (continuous stirred tank reactor) in which two reactions are occurring in parallel is sought by use of a computer simulation technique. The results indicate that the corresponding suboptimal periodic state may be unstable under open-loop control and, consequently, some stabilization technique which will be proposed in another work is required. Structure analysis based on the stroboscopic approach is successfully applied for determining the periodic state which might be unstable.