Adaptive Control - Classification of Adaptive Control Techniques

Classification of Adaptive Control Techniques

In general one should distinguish between:

  1. Feedforward Adaptive Control
  2. Feedback Adaptive Control

as well as between

  1. Direct Methods and
  2. Indirect Methods

Direct methods are ones wherein the estimated parameters are those directly used in the adaptive controller. In contrast, indirect methods are those in which the estimated parameters are used to calculate required controller parameters

There are several broad categories of feedback adaptive control (classification can vary):

  • Dual Adaptive Controllers
    • Optimal Dual Controllers
    • Suboptimal Dual Controllers
  • Nondual Adaptive Controllers
    • Adaptive Pole Placement
    • Extremum Seeking Controllers
    • Iterative learning control
    • Gain scheduling
    • Model Reference Adaptive Controllers (MRACs)
      • Gradient Optimization MRACs
      • Stability Optimized MRACs
    • Model Identification Adaptive Controllers (MIACs)
      • Cautious Adaptive Controllers
      • Certainty Equivalent Adaptive Controllers
        • Nonparametric Adaptive Controllers
        • Parametric Adaptive Controllers
          • Explicit Parameter Adaptive Controllers
          • Implicit Parameter Adaptive Controllers

Some special topics in adaptive control can be introduced as well:

  1. Adaptive Control Based on Discrete-Time Process Identification
  2. Adaptive Control Based on the Model Reference Technique
  3. Adaptive Control based on Continuous-Time Process Models
  4. Adaptive Control of Multivariable Processes
  5. Adaptive Control of Nonlinear Processes

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