In this tutorial model, an eigenvalue analysis of a turbocharger rotor is performed. The rotor is analyzed in an unconstrained configuration, also commonly known as free–free conditions. A rotor like this is usually intended for high-speed applications, but here the analysis is performed at standstill. The mesh is imported using a file on Nastran® format.

You can now use the velocity form of the PID controller algorithm in addition to the previous position form when creating a PID controller using the PID Controller Setup add-in. The velocity form works best with a fixed time step.