Topic
Transfer function
About: Transfer function is a research topic. Over the lifetime, 14362 publications have been published within this topic receiving 214983 citations. The topic is also known as: system function & network function.
Papers published on a yearly basis
Papers
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29 May 1991
TL;DR: In this article, the authors discuss the characterization of frequency standards, clocks, and associated systems, and treat each of these measures as a digital filter and study their transfer functions, and then recast the three statistical measures into the frequency domain.
Abstract: The authors discuss the characterization of frequency standards, clocks, and associated systems. These associated systems may include time and frequency measurement systems, time and frequency transmissions systems, time and frequency comparison systems, and telecommunication networks. No single characterization is suitable. However, three time-domain statistical measures cover most of the situations encountered in actual practice. The selection of the appropriate time-domain measure is a function of the types of noise characteristic of the process being investigated, as well as whether the time stability or the frequency stability is to be studied. The three statistical measures are recast into the frequency domain. The authors treat each of these measures as a digital filter and study their transfer functions. This type of measure is related to the passband characteristics of a given system. >
109 citations
Book•
01 Jan 1967
TL;DR: This book discusses Control Systems Terminology, Difference Equations, and Linear Systems, and the Design of Feedback Control Systems, as well as analysis and design of these systems.
Abstract: Control Systems Terminology Differential Equations Difference Equations, and Linear Systems The LaPlace Transform and the Z-Transform Stability Transfer Functions Block Diagram Algebra and Transfer Functions of Systems Signal Flow Graphs Systems Sensitivity Measures and Classification of Feedback Systems Analysis and Design of Feedback Control Systems Objectives and Methods Nyquist Analysis Nyquist Design Root-Locus Analysis Root-Locus Design Bode Analysis Bode Design Nichols Chart Analysis Nichols Chart Design Introduction to Nonlinear Control Systems Introduction to Advanced Topics in Control Systems Analysis and Design
109 citations
TL;DR: In this article, exact expressions for the periods and amplitudes of limit cycles under relay feedback are derived for processes which may be modeled by first-order plus dead-time dynamics.
Abstract: There have recently been considerable interests in extensions of PID relay autotuning to model-based controllers, and this necessitates transfer function modeling from relay feedback. The methods reported in the literature for this purpose require two tuning tests, and their results are approximate in nature. In this paper, exact expressions for the periods and amplitudes of limit cycles under relay feedback are derived for processes which may be modeled by first-order plus dead-time dynamics. This time-domain information is then combined with frequency response point estimation using Fourier series expansions of the limit cycles so that a first-order plus dead-time model can be identified with a single relay test. Furthermore, no approximation is made in our derivations and the resultant model will be precise if it matches the structure of the process. In the case of the mismatched structure, it is shown through extensive simulations that our procedure yields very accurate results in the sense that the i...
109 citations
TL;DR: In this paper, a non-minimal state space model for model predictive control (MPC) is proposed, in which the state variables are chosen as the set of measured input and output variables and their past values.
109 citations
15 Dec 1993
TL;DR: In this paper, the notion of frequency response for sampled-data systems is studied and the computation of the frequency response can be reduced to a finite-dimensional eigenvalue problem.
Abstract: This paper studies the notion of frequency response for sampled-data systems, and explores some basic properties as well as its computational procedures. It is shown that: 1) by the lifting technique the notion of frequency response can be naturally justified for sampled-data systems in spite of their time-varying characteristics; 2) it represents a frequency domain steady state behavior; and 3) it is also closely related to the original transfer function representation via an integral formula. It is shown that the computation of the frequency response can be reduced to a finite-dimensional eigenvalue problem, and some examples are presented to illustrate the results. >
108 citations