Optimal, constant I/O similarity scaling for full-information and state-feedback control problems
Systems & Control Letters
Gain scheduling via linear fractional transformations
Systems & Control Letters
Automatica (Journal of IFAC)
Robust performance of systems with structured uncertainties in state space
Automatica (Journal of IFAC)
Self-scheduled H∞ control of linear parameter-varying systems: a design example
Automatica (Journal of IFAC)
Low-order control design for LMI problems using alternating projection methods
Automatica (Journal of IFAC)
Robust output-feedback controller design via local BMI optimization
Automatica (Journal of IFAC)
Hi-index | 22.15 |
We discuss the problem of robust controller synthesis to provide quadratic stability and a desirable disturbance attenuation level (through an appropriately small L"2 gain) for systems with time-varying, real parametric uncertainty. Through the use of skewsymmetric matrices, the conservatism of standard scaled H"~ approach is reduced. While the full state feedback problem is convex, the output feedback problem is not. A set of conditions under which the design of output feedback controllers can be broken into two sequential convex problems is presented. The results are compared with recent results concerning the design of parameter-varying controllers and a simple result regarding the mixed problem (where some of the unknown parameters can be measured on-line) is discussed.