Therefore, multirate systems are hybrid. To obtain a robust and high-performance controller for a multirate system, it is necessary to consider the hybrid nature of the problem. Also, stability robustness and performance robustness nonconservative criteria are established. These design techniques can be readily utilized in aerospace applications. The problem of robust stabilization and optimal disturbance rejection is considered for systems that are nonlinear and nonautonomous.
Special attention is given to periodically time-varying systems with nonlinearities.
Generalized H infin. Furthermore, these methods can be tailored to specific applications of mechanical and aerospace systems.