Browse Prior Art Database

General Technique for Modeling of Hysteresis Nonlinearities

IP.com Disclosure Number: IPCOM000109396D
Original Publication Date: 1992-Aug-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Nobakht, RA: AUTHOR

Abstract

Nonlinearities of hysteresis type are common for various branches of science and technology, including physics, mechanics, biology and civil engineering, in particular. Effects like magnetic hysteresis, dielectric hysteresis or plastic hysteresis are all well-known phenomena. In this article a technique is presented for modeling of hysteresis nonlinearities. Unlike other methods which are only applicable to describing and studying systems with hysteresis nonlinearities, this technique introduces an actual model which can be used more effectively for system identification and modeling.

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General Technique for Modeling of Hysteresis Nonlinearities

       Nonlinearities of hysteresis type are common for various
branches of science and technology, including physics, mechanics,
biology and civil engineering, in particular.  Effects like magnetic
hysteresis, dielectric hysteresis or plastic hysteresis are all
well-known phenomena.  In this article a technique is presented for
modeling of hysteresis nonlinearities.  Unlike other methods which
are only applicable to describing and studying systems with
hysteresis nonlinearities, this technique introduces an actual model
which can be used more effectively for system identification and
modeling.  Although each and every known method has its own merit
with regards to the description and study of hysteresis effects
within the frame work of various branches of science and technology,
a general simplified model of hysteresis effects has not yet been
effectively proposed.  This technique is based on the modeling of the
nonlinearity element plus the addition of a memory element for
modeling of hysteresis effects.  It was found that in applications
the modeling of hysteresis effects can be done effectively by
representing the model as a nonlinearity with memory.  Application of
this technique to modeling and identification of a DAC nonlinearity
plus a sample-hold amplifier in a full duplex digital subscriber loop
was done, where performance improvements of about 40 dBs were
achieved as the result.

      Th...