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Choosing a Control Design Approach

Control System Toolbox™ provides several approaches to tuning control systems. Use the following table to determine which approach best supports what you want to do.

 PID TuningClassical Control DesignMultiloop, Multiobjective Tuning

PID loops with unit feedback (1-DOF and 2-DOF)

Control systems having SISO controllers in common single-loop or multiloop configurations (see Feedback Control Architectures)Any architecture, including any number of SISO or MIMO feedback loops
Control Design ApproachAutomatically tune PID gains to balance performance and robustness
  • Graphically tune poles and zeros on design plots, such as Bode, root locus, and Nichols

  • Automatically tune compensators using response optimization (Simulink® Design Optimization™), LQG synthesis, or IMC tuning

Automatically tune controller parameters to meet design requirements you specify, such as setpoint tracking, stability margins, disturbance rejection, and loop shaping (see Tuning Goals)
Analysis of Control System Performance

Time and frequency responses for reference tracking and disturbance rejection

Any combination of system responsesAny combination of system responses
Graphical tuning using Control System Designer

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