The dichotomy property in stabilizability of 2 x 2 linear hyperbolic systems

This paper is devoted to discuss the stabilizability of a class of 2 x 2 non-homogeneous hyperbolic systems. Motivated by the example in the Section 5.6 of Bastin and Coron's book in 2016, we analyze the influence of the interval length L on stabilizability of the system. By spectral analysis, we prove that either the system is stabilizable for all L > 0 or it possesses the dichotomy property: there exists a critical length L-c > 0 such that the system is stabilizable for L is an element of (0, L-c) but unstabilizable for L is an element of [L-c,+infinity). In addition, for L is an element of [L-c,+infinity), we obtain that the system can reach equilibrium state in finite time by backstepping control combined with observer. Finally, we also provide some numerical simulations to confirm our developed analytical criteria.