Umwandlung des Modelltyps
Sie können ein Modell von einer Darstellung in eine andere konvertieren, indem Sie den Befehl zur Modellerstellung für den Zielmodelltyp verwenden. Konvertieren Sie zum Beispiel mit ss
in die Zustandsraumdarstellung und mit pid
in die parallele PID-Darstellung. Informationen über die Konvertierung in einen bestimmten Modelltyp finden Sie auf der Referenzseite für den jeweiligen Modelltyp.
Funktionen
tf | Transferfunktionsmodelle |
zpk | Zero-pole-gain model |
ss | State-space model |
frd | Frequency-response data model |
pid | PID controller in parallel form |
pidstd | PID controller in standard form |
pid2 | 2-DOF PID controller in parallel form |
pidstd2 | 2-DOF PID controller in standard form |
make1DOF | Convert 2-DOF PID controller to 1-DOF controller |
make2DOF | Convert 1-DOF PID controller to 2-DOF controller |
getComponents | Extract SISO control components from a 2-DOF PID controller |
Themen
- Conversion Between Model Types
You can explicitly convert a model from one representation to another using the model-creation command for the target model type.
- Switching Model Representation
This example shows how to switch between the transfer function (TF), zero-pole-gain (ZPK), state-space (SS), and frequency response data (FRD) representations of LTI systems.
- Convert from One Model Type to Another
This example shows how to convert a numeric LTI model from one type (
pid
) to another type (tf
). - Get Current Value of Generalized Model by Model Conversion
This example shows how to get the current value of a generalized model by converting it to a numeric model.
- Decompose a 2-DOF PID Controller into SISO Components
This example shows how to extract SISO control components from a 2-DOF PID controller in each of the feedforward, feedback, and filter configurations.
- Sensitivity of Multiple Roots
This example shows that high-multiplicity poles have high numerical sensitivity and can shift by significant amounts when switching model representation.