Transfer Function Approximation V ia Rational ized Haar Transform in Frequency Domain
نویسندگان
چکیده
منابع مشابه
RATIONAL APPROXIMATION OF FREQUENCY DOMAIN RESPONSES BY VECTOR FllTlNG
The paper describes a general methodology for the fitting of measured or calculated frequency domain responses with rational function approximations. This is achieved by replacing a set of Starting poles with an improved set of poles via a scaling procedure. A previous paper [5] has described the application of the method to smooth functions using real starting poles. This paper extends the met...
متن کاملSuperfast Wavelet Transform Using QTT Approximation. I: Haar Wavelets
We propose a superfast discrete Haar wavelet transform (SFHWT) as well as its inverse, using the QTT representation for the Haar transform matrices and input-output vectors. Though the Haar matrix itself does not have a low QTT-rank approximation, we show that factor matrices used at each step of the traditional multilevel Haar wavelet transform algorithm have explicit QTT representations of lo...
متن کاملRational Transform Approximation via the Laguerre Spectrum
In t roduc t ion An important class of functions from the point of view of signal representation and approximation is the class with n th order rational Laplace transforms. These functions arise naturally in such fields as model identification and timedomain synthesis. The problem of finding the best n th order rational function to represent a given time function is, therefore, important; unfor...
متن کاملBest rational function approximation to Laplace transform inversion using a window function (*)
The best ra t ional f unc t i on a p p r o x i m a t i o n for Laplace t ransform inversion due to L o n g m a n is mod i f i ed by the i n t r o d u c t i o n o f an appropr ia te " w i n d o w " func t ion . This w i n d o w f u n c t i o n enables one to a p p r o x i m a t e the inverse t r ans fo rm f( t) by a linear c o m b i n a t i o n gn (t) o f n exponent ia l func t ions accura te ly...
متن کاملRational Approximation of Noisy Frequency Responses
Vector Fitting is a robust technique for transfer function synthesis in the frequency domain. This method combines the use of a Sanathanan-Koerner iteration and a well-chosen partial fraction basis. It is known that its convergence properties become impaired if the data is contaminated with noise, which results in poor fitting models. In this paper, an alternative approach is presented, and its...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Control and Automation
سال: 2014
ISSN: 2005-4297
DOI: 10.14257/ijca.2014.7.4.21