Decentralized Control of Multiple Strict-Feedback Systems With Unknown Control Directions

This paper is concerned with the decentralized control problem of networked high-order nonlinear systems that can be transformed into strict feedback forms parameter uncertainties and unknown directions under a directed communication graph. A controller designed recursively for each agent to realize output synchronization guarantee overall system bounded. Instead Lyapunov-based argument which commonly used in literature, an inductive contradiction employed. Moreover, not like other existing works, we use Nussbaum function analysis form rather than its derivative, only facilitates proof but also enlarges schedule’s application scope. Simulation results are presented verify effectiveness proposed scheme.