An open-loop and closed-loop control method is described for starting up or shutting
down a process component of a technical process. At least one manipulated variable
that is fed to the process is formed by a control device and an upstream model-assisted
pilot control. The pilot control contains an optimizer and a process model. The
optimizer is fed at least one command variable for the technical process. At least
one optimized model manipulated variable which the optimizer outputs is fed to
a process model of the pilot control and, is added to at least one output variable
of the control device to form the manipulated variable. A model output variable
of the process model is fed to the control device as a set-point and fed back to
the optimizer along with variables which cannot be measured in the technical process.
A device for implementing the method is also described.