High Performance Controllers for Unknown Multivariable Systems

摘要

Recent work on the design of robust proportional plus integral process controllers for unknown minimum-phase (but possibly unstable) multivariable systems is considered. Low gain and high gain philosophies are compared, and conditions for stability of an unknown multivariable plant that is known to be minimum phase, with nonsingular matrix, in the presence of unity negative feedback, with forward path proportional plus integral controller of specified form, are derived. Results are illustrated by application to an open loop unstable batch process.