Dynamic simulation

The building block of the dynamic simulation are referred to as subprocesses

where subsystem has has

• a scalar output Y
• a scalar disturbance input D (not directly manipulated)
• a scalar or vector of manipulated variables U.

A standard PID-control loop can be implemented as a subsystem:

or it can simply be a single-input or multiple input to single output process model without feedback:

.

The aim of the dynamic simulation is to support dynamic simulation of entire process sections. A process is in general any set of subprocesses

The point of co-simulating set of subprocesses is that they may be connected for instance

• subprocesses connected in series

• subprocesses that are connected in process-feedback loops

• subprocesses that are controlled by PID-controllers, and

• combinations of the above