2010/04/17 by Winfried Lohmiller, Jean-Jacques Slotine, Lohmiller, Winfried +1
Engineering · #Adaptive Control of Nonlinear Systems #Advanced Control Systems Optimization #Chaotic Dynamics (nlin.CD) #Classical Analysis and ODEs (math.CA) #Control and Stability of Dynamical Systems #Dynamical Systems (math.DS) #FOS: Mathematics #FOS: Physical sciences
paper · pdf · doi:10.48550/arxiv.1004.2971
openalex publication_date 2010/04/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper derives for non-linear, time-varying and feedback linearizable systems simple controller designs to achieve specified state-and timedependent complex convergence rates. This approach can be regarded as a general gain-scheduling technique with global exponential stability guarantee. Typical applications include the transonic control of an aircraft with strongly Mach or time-dependent eigenvalues or the state-dependent complex eigenvalue placement of the inverted pendulum. As a generalization of the LTI Luenberger observer a dual observer design technique is derived for a broad set of non-linear and time-varying systems, where so far straightforward observer techniques were not known. The resulting observer design is illustrated for non-linear chemical plants, the Van-der-Pol oscillator, the discrete logarithmic map series prediction and the lighthouse navigation problem. These results [23] allow one to shape globally the state- and time-dependent convergence behaviour ideally suited to the non-linear or time-varying system. The technique can also be used to provide analytic robustness guarantees against modelling uncertainties. The derivations are based on non-linear contraction theory [18], a comparatively recent dynamic system analysis tool whose results will be reviewed and extended.