نتایج جستجو برای: minimum phase

تعداد نتایج: 753195  

2002
Noura Sellami Inbar Fijalkow

In this paper, we propose a decoder for low-complexity equalization of coded frequency selective multiple-input multiple-output channels. The decoder combines the Parallel Decision Feedback Decoding (PDFD) and the List-type approach. This alternative achieves a good trade-off between performance and complexity even when the channel is not minimum phase.

2002
Kou Yamada Keiji Satoh Tadashi Okuyama

We give an explicit parameterization of all causal stabilizing repetitive controllers for single-input/single-output continuous time non-minimum phase systems of a certain class. When the plant meets certain conditions, using the parallel compensation technique, we obtain the parameterization of all repetitive controllers. Finally, a numerical example shows the effectiveness of this parameteriz...

2005
Walter A. Petersen Hugh J. Christian Steven A. Rutledge

[1] This study uses TRMM lightning and radar observations to study the fundamental relationship between precipitation ice mass and lightning flash density. The results indicate that the physical assumptions of precipitation-based charging and mixed phase precipitation development are robust and that on a global scale, the relationship between precipitation ice water path and lightning flash den...

Journal: :Automatica 2002
Giovanni Marro Domenico Prattichizzo Elena Zattoni

The problem of the non-causal inversion of linear multivariable discrete-time systems is analyzed in the geometric approach framework and is solved through the computation of convolution pro#les which guarantee perfect tracking under the assumption of in#nite-length preaction and postaction time intervals. It is shown how the shape of the convolution pro#les is related to both the relative degr...

Journal: :Automatica 2008
Guido Herrmann Matthew C. Turner Ian Postlethwaite

This paper presents an override controller which ensures that constrained output variables retain certain prescribed strict bounds. The class of nominal closed loop systems considered for the constrained output regulation problem is strictly proper and minimum phase, assuming for each output measurement constraint one available actuator and the first Markov parameter to be full rank. This neces...

2004
Arlo Faria

This is a study to investigate the parameters of the glottal source signal that are evidenced by three kinds of signals: an electroglottographic (EGG) signal, an acoustic signal, and an oral airflow signal. The glottal pulse waveform, whether intrinsically defined as glotal airflow or area, can be parameterized with attributes that vary across speakers and types of phonation. Some of these para...

2007
Xiaoming Hu

In this paper, some results of feedback stabilization on compacta for a nonlinear control system are obtained by using an invariant manifold approach. In particular, a class of globally nonminimum phase systems are treated. Issues such as high gain feedback stabilization on compacta vs. peaking phenomenon, and globally exponentially minimum phase vs. globally asymptotically (critically) minimum...

Journal: :Automatica 2002
Benoît Codrons Brian D. O. Anderson Michel Gevers

In many practical cases, the identification of a system is done in closed loop with some controller. In this paper, we show that the internal stability of the resulting model, in closed loop with the same controller, is not always guaranteed if this controller is unstable and/or nonminimum phase, and that the classical closed-loop prediction-error identification methods present different proper...

Journal: :IEEE Trans. Contr. Sys. Techn. 2002
Sharon Liu Anna G. Stefanopoulou

The wheel speed control problem of an automotive powertrain equipped with a conventional spark-ignition engine directly connected to a continuously variable transmission (CVT) and an electronic throttle is considered. We revisit the seminal work by Guzzella and Schmid and show that the control structure that dedicates the throttle actuator to maintaining engine operation at the maximum fuel eff...

1993
Joachim Denzler Ralf Kompe Andreas Kießling Heinrich Niemann Elmar Nöth

Das diesem Bericht zugrundeliegende Forschungsvorhaben wurde mit Mitteln des Bundesministers f ur Forschung und Technologie unter dem F orderkenn-zeichen 01 IV 102 H/0 und 01 IV 102 C 6 gef ordert. Die Verantwortung f ur den Inhalt dieser Arbeit liegt bei dem Autor. Abstract In this paper we present a new method transforming speech signals to voice source signals (VSS) using arti-cial neural ne...

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