Multi-model decoupled generic model control

A decoupling strategy has been integrated into the Generic Model Control (GMC) framework to compensate for dynamic mismatch. The Multi-Model Decoupler (MMD) approach is based upon using a separate model inverse for the calculation of each manipulated variable. The use of separate model inverses allows the extra degrees-of-freedom required for the dynamic compensation. MMD-GMC is shown to offer significant control performance advantages over conventional GMC and PI control for both feed composition step changes acid sinusoidal Feed composition changes for the mid-purity distillation case considered in this paper. A high-purity case is also considered which demonstrates the limitations of GMC in general. (C) 2001 Elsevier Science Ltd. All rights reserved.