From Spectral Dynamics, Inc.
Measuring the frequency response of a linear system is a typical first step in characterizing it's
dynamic behavior. Requirements in control design and signal processing often demand
information beyond the frequency response. Underlying differential and/or difference
equations provide a concise mathematical description defining all other dynamic behavior.
The task of estimating these equations from measurements of input and output signals is
referred to in the control literature as the process of System Identification (SID). Despite the
complexity of the signal processing involved, the complete identification process can be
integrated into an easy to use GUI based application.
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The content of this book is closely related to system theory, a scientific discipline devoted to the study of mathematical properties of various physical systems. System theory has become an extensive...
This chapter presents a general overview of the frequency-response method for system identification, which is the focus of this book and is implemented in CIFER . We also present results of the...
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