Comments on "self-tuning adaptive control of cement raw material blending"

Abstract

In a recent paper Keviczky and co-workers (1978) use results of previous papers (Keviczky and Hetthessy, 1977; Hetthessy, Haber and Keviczky (1975) to present the MIMO-ST-MV and the MIMO-ST-MV-RAFT used in cement industries. In this correspondence an algebraic mistake is shown to have taken place in Keviczky and Hetthessy (1977). Accordingly, the representation in Keviczky and co-workers (1978) of the regulator parameter matrix is not of the minimum variance type. © 1979.