FREQUENCY-DOMAIN ROBUSTNESS OF TIME-LAG SYSTEMS

摘要

This paper investigates the robustness of linear time-lag systems with respect to real parameteric uncertainties. A linear quadratic time-lag regulator (LQTLR) is derived in the frequency-domain and its relation to the Kalman equation, the circlecondition and the Hamiltonian system is disclosed. Frequency-domain robustness properties are provided. These include performance improvement and closed-loop eigenvalue distribution.