Safety Concerning for Algorithms Switching in Multiple Model Control Structures

Switching the control algorithms is a widely used procedure within non-linear process control structures. However, this type of procedure is very sensitive, especially in the presence of disturbances, as it may cause command control shocks which have negative effects on the system being controlled. This procedure is particularly found within the configuration of multiple model type control structures (MM). This paper proposes a practical solution for measuring the value of a shock caused by such a switching algorithm and a procedure that can avoid or reduce its effects. The solution can be directly applied in real-time applications, which is demonstrated by the example included at the end of this paper.