NLFeedback 2.0: a symbolic computation tool for the design of extended controllers and observers for nonlinear control systems with stabilizable and detectable linearization

In previous works (1995, 1997) we reported the development of the symbolic computation tool NLFeedback, for the automatic design of extended nonlinear state feedback controllers and Luenberger observers for nth order nonlinear control systems with completely controllable and observable linearization, using Mathematica as symbolic computation platform. In this paper we introduce NLFeedback 2.0, to cover the design of: 1) extended nonlinear state feedback controllers and Luenberger observers for nonlinear control systems with stabilizable and detectable linearization respectively; and 2) reduce order extended nonlinear observers. NLFeedback 2.0 also possesses a new additional module to transform more general output equations to the type of output equations NLFeedback can manipulate.