Generalized parameter estimation-based observers: Application to power systems and chemical–biological reactors

In this paper we propose a new state observer design technique for nonlinear systems. It consists of an extension the recently introduced parameter estimation-based observer, which is applicable systems verifying particular algebraic constraint. contrast to previous one avoids need implementing open loop integration that may stymie its practical application. We give two versions ensures asymptotic convergence and second achieves in finite time. both cases, required excitation conditions are strictly weaker than classical persistent assumption. shown proposed practically important examples multimachine power chemical–biological reactors.