Characteristic Real Roots and CRRID Property of Time-Delay Systems: Recent Results and Prospective
摘要
This chapter provides an overview on recently recovered qualitative property of linear time-invariant time-delay systems admitting real spectral values. In fact, in recent studies, it has been shown that time-delay systems admitting a number of real spectral values equal to the Pólya-Szegő bound admit necessarily a real rightmost spectral value, a property called coexistent real roots-induced dominancy (CRRID). This property has been exploited in a new control paradigm called partial pole placement allowing to exactly prescribe the exponential decay of the control system solution. After introducing the theoretical foundation of such a prescribed stabilization, the problem of control of active vibration is considered, illustrating the effectiveness of the method.