Path-complete positivity of switching systems
Fulvio Forni, Raphaël M. Jungers, Rodolphe J. Sepulchre · IFAC-PapersOnLine · 2017
The notion of path-complete positivity is introduced as a way to generalize the property of positivity from one LTI system to a family of switched LTI systems whose switching rule is constrained by a finite automaton. The generalization builds upon the analogy between stability and positivity, the former referring to the contraction of a norm, the latter referring to the contraction of a cone (or, equivalently, a projective norm). We motivate and investigate the potential of path-complete positivity and we propose an algorithm for the automatic verification of positivity.