Design and implement gain-scheduled controllers with MATLAB and Simulink
Gain scheduling is a common technique for controlling nonlinear systems with dynamics changing from one operating condition to another. Gain scheduling is used when a single set of controller gains does not provide desired performance and stability throughout the entire range of operating conditions for the plant.
Designing a gain-scheduled controller typically involves the following steps:
- Linearize nonlinear plant model at different operating conditions to obtain linear models that describe plant behavior in the vicinity of the operating point that a linear model corresponds to.
- Tune controller gains for all the linear plant models.
- Implement a gain-scheduled controller architecture, where controller gains are “scheduled” with a scheduling variable, such as a measured output or a system state.
Examples and How To
- Designing a Family of PID Controllers for Multiple Operating Points (Documentation)
- Implement Gain-Scheduled PID Controllers (Documentation)
- Gain-Scheduled Controllers (Documentation)
See also: control systems, PID control, PID tuning, control design software, Bode plot, root locus, linearization