Airborne wind energy (AWE) systems with electrical machine on the ground are a promising alternative to classical wind turbines. Such systems are operated in pumping mode with the reel-out phase generating electrical power and the reel-in phase dissipating power [1]. We discuss DC-link voltage control of the grid-side voltage source inverter (VSI) which controls active power flow from the machi...

In this paper we study the problem of linearly equalizing the Multiple Input Multiple Output (MIMO) communications channels from an H∞ point of view. H∞ estimation theory has been recently introduced as a method for designing filters that have acceptable performance in the face of model uncertainty and lack of statistical information on the exogenous signals. In this paper we obtain a closed-fo...

Prominence relations in speech are signaled by various ways including such phonetic means as voice fundamental frequency, intensity, and duration. A less studied acoustic feature affecting prominence is the so called voice quality which is determined by changes in the airflow caused by different laryngeal settings. We investigated the changes in voice quality with respect to linguistic prosodic...

Analysis and design algorithms for residual generators for non minimum phase systems are given. It is shown that Rm optimization of residual generators applied directly to systems including non m i n i u m phase zeros can be very conservative. To remove this conservatism in the H, optimization of the residual generators, a factorization of the non minimum phase system into a minimum phase part ...

In this paper a control configuration for inverseresponse processes is presented. It results in a Smith-type predictor scheme that aims to put the non-minimum phase dynamics out of the feedback loop. The design is carried out analytically by solving an H∞ weighted optimization problem assuming a second order stable process with one positive zero. The performance of the proposed control configur...

This paper addresses the stabilization issue of a class of switched nonlinear systems where each mode may be non-minimum phase, and the states of linearized dynamics of all modes compose the whole state space. Time dependent and state dependent stabilization switching laws are provided with considering both common and multiple Lyapunov functions. The new results are applied to aggregation probl...

A method of output feedback design of an adaptive controller is presented that can be used to augment a fixed-gain linear controller. The key feature is that it is applicable to non-minimum phase nonlinear systems, having both parametric uncertainty and unmodeled dynamics. Ultimate boundedness of error signals can be shown using Lyapunov’s direct method. An example is provided to illustrate the...