A non persistent excitation input sequence for Volterra and NARMAX filter representation
نویسندگان
چکیده
This paper presents an original approach for nonlinear Volterra and NARMAX filter identification. We propose here to use a non persistent excitation of input sequence to excite few terms of the Volterra and NARMAX filter, which must satisfy a set of physical constraints. Expressions have been developped to evaluate the accurate number of excited terms of the Volterra and NARMAX filter.
منابع مشابه
Non Linear Adaptive Filter for Interference Suppression
Radio Frequency (RF) interference is inherent in all wireless systems and is one of the most significant design parameters of cellular and other mobile systems. In this paper, it is shown that how a non-linear adaptive Volterra filter (Polynomial filter where input and output signals are related through Volterra series) helps track the statistics of the input data and dynamics of a direct seque...
متن کاملIntegral minimum variance-like control for pooled non-linear representations with application to an aircraft system
This paper presents an integral minimum variance-like controller design based upon a Constant Coefficient Pooled Nonlinear AutoRegressive Moving Average with eXogenous excitation (CCP-NARMAX) representation. The use of pooling techniques significantly enhances the NARMAX representation’s ability to accurately describe systems performing under various operating conditions such as aircraft system...
متن کاملBaseband Volterra filters for implementing carrier based nonlinearities
A diagonal coordinate representation for Volterra filters is developed and exploited to derive efficient Volterra filter implementations for processing carrier based input signals. In the diagonal coordinate representation the output is expressed as a sum of linear filters applied to modified input signals. Hence, linear filtering methods are employed to implement the nonlinear filter on a base...
متن کاملIdentification of Hysteresis in Human Meridian Systems Based on NARMAX Model
It has been found that the response of acupuncture point on the human meridian line exhibits nonlinear dynamic behavior when excitation of electroacupuncture is implemented on another meridian point. This nonlinear phenomenon is in fact a hysteretic phenomenon. In order to explore the characteristic of human meridian and finally find a way to improve the treatment of diseases via electro-acupun...
متن کاملNon-linear Parameter Estimation Using Volterra Series with Multi-tone Excitation
The functional form representation of input-output relationship through Volterra series provides a structured mathematical platform for the study of nonlinear systems. It employs multi-dimensional kernels, which upon convolution with the applied excitation forces, express system response in the form of a power series. Frequency domain transforms of these multi-dimensional kernels provide higher...
متن کامل