http://nova.newcastle.edu.au/vital/access/services/Feed ${session.getAttribute("locale")} 5 http://nova.newcastle.edu.au/vital/access/manager/Repository/uon:8704 In many applications one needs to switch between control laws. This requires some form of bumpless transfer. Here we propose a simple bumpless mechanism for possible implementation on a set of Multi-Effect Evaporators in a Sugar Mill located in Queensland, Australia. The ultimate goal of this study is to allow on-the-fly testing of different controller designs and exchanging of control authority to achieve increased performance. 2013-03-27T01:51:46.805Z ]]> http://nova.newcastle.edu.au/vital/access/manager/Repository/uon:6111 Evaporators are core units in many industrial processes including sugar mills. The dynamics of these systems are complex and hence the systems have been frequently used to demonstrate unusual systems and control behaviour. In this paper we explore a particular control architecture commonly employed in industry. We show that the architecture can lead to poor performance due to steam and concentration disturbances. An alternative architecture is then proposed which overcomes the difficulties. 2010-05-07T02:40:45.636Z ]]> http://nova.newcastle.edu.au/vital/access/manager/Repository/uon:6023 We consider the problem of reducing interaction in the closed-loop response of model predictive control (MPC). Interaction in MPC may be caused by diagonal weighting of inputs in the MPC cost function that are not diagonally related to the outputs. If instead of weighting the plant inputs a suitable decoupled input signal is used in the MPC cost function, then a significant reduction in cross coupling can occur. In the case where the plant has a static interaction matrix, complete decoupling occurs. Simulation examples show that the procedure can be implemented via a simple modification to standard MPC algorithms, and is applicable to ill-conditioned and non-minimum phase plants. 2010-04-27T04:31:33.452Z ]]>