# Model-Based Control Techniques

## Classical Control (PID, Feedforward)
*Summarize tuning approaches and feedforward structures for PEM systems.*

## State-Space and Observer Design
*Discuss linear and nonlinear observers for pressure, temperature, and humidity states.*

## Model Predictive Control (MPC)
*Outline constraint handling, horizons, and computational considerations for real-time MPC.*

## Case Study: Grid-Following PEM Operation
*Describe a control strategy for following grid dispatch signals while respecting stack limits.*