The purpose of this paper is to describe the control challenges related to optimal operation
of oil and gas production wells, and show that optimal operation can be achieved using …

An important task of the supervisory control layer is to maintain optimal operation. To
achieve this, we need to change control objectives when constraints become active (or …

Selector logic is a simple and effective tool to switch between different controlled variables
associated with change in active constraints. Selector blocks have been extensively used in …

The purpose of this paper is to show that online process optimization can be achieved using
simple control structures without the need for solving numerical optimization problems …

Split range control is a common advanced control structure in the process industry. It is
primarily used to extend the steady-state operating range by using more than one …

In this work, we use a plantwide control framework to systematically identify the control
objectives, operational and environmental constraints, and degrees of freedom for a heat to …

This paper deals with a case when multiple inputs are needed to cover the steady-state
operating range. The most common implementation is to use split range control with a single …

Control structures must be properly designed and implemented to maintain optimality. The
two options for the supervisory control layer are Advanced Control Structures (ACS) and …

Optimal operation of systems subject to constraints can be challenging, especially when the
set of active constraints changes during operation due to disturbances. The use of traditional …

The objective of this work is to define the optimal operation and control for a thermal storage
system with heat sources and a consumer, which exchange utilities using one hot water …