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Simulink® Control Design™ provides several approaches to tuning Simulink blocks, such as Transfer function and PID Controller blocks:
PID Controller Tuning lets you automatically tune feedback loops containing PID Controller or PID Controller 2DOF blocks.
Use automated tuning or graphical design approaches to tune SISO feedback loops containing any tunable linear blocks. See SISO Loop Tuning.
If you have Robust Control Toolbox™ software, you can tune Simulink models of control systems having any structure to meet design requirements you specify. See Control System Tuning.
Use the following table to determine which approach best supports what you want to do.
|PID Tuning||SISO Loop Tuning||Control System Tuning (requires Robust Control Toolbox software)|
|Supported Blocks||PID Controller|
PID Controller 2DOF
|Linear blocks||Any blocks; only some are automatically parameterized (See How Tuned Simulink Blocks Are Parameterized in the Robust Control Toolbox documentation)|
|Loop Structure||PID loops with unit feedback||Control systems having one or more SISO feedback loops||Any structure, including SISO or MIMO feedback loops|
|Control Design Approach||Simple automatic PID gain tuning by specifying system response time and transient response|
Graphically tune poles and zeros on design plots, such as Bode, root locus, and Nichols
Use a PID, LQG, IMC, Robust Control Loop Shaping, and Simulink Design Optimization automated tuning method
|Automatic tuning to meet design requirements you specify, such as setpoint tracking, stability margins, disturbance rejection, and loop shaping|
|Analysis of Control System Performance|
Time and frequency response for reference tracking and disturbance rejection
|Any combination of responses for any input reference or disturbance in your Simulink model||Any combination of system responses|
|Interface||Graphical interface of PID Tuner||Graphical interface of Control System Designer and LTI Viewer|