模型类型转换

更改模型表示，例如从状态空间模型转换为传递函数

您可以针对目标模型类型使用相应的模型创建命令，将模型从一种表示转换为另一种表示。例如，使用 ss 转换为状态空间表示，使用 pid 转换为并联型 PID。有关转换为特定模型类型的信息，请参阅该模型类型的参考页。

函数

`tf`	传递函数模型
`zpk`	零极点增益模型
`ss`	状态空间模型
`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

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.