On chaotic behavior in automatic tuning loops for continuous–time filters
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hdl:2117/22642
Document typeConference lecture
Defense date2014
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessRestricted access - publisher's policy
Abstract
Continuous–time filters (CTFs) with automatic tuning loops are nonlinear feedback systems with potential instability. Thus, their appropriate linear dynamic modeling should be obtained to assure stability in case of an improved design of the loop controllers is to be carried out. A systematic approach using a small signal model would allow obtaining these controllers. However, bifurcations and nonlinear
phenomena may appear which cannot be predicted by this analysis. This leads to potential instability, semiperiodic or chaotic behavior and, thus, circuit malfunction. The aim of this paper is to show by means of simulations and experimental results that nonlinear phenomena, which cannot be predicted by the common small signal analysis, may appear in this kind of circuits when circuit parameters are varied.
CitationMartinez, H.; Cosp, J. On chaotic behavior in automatic tuning loops for continuous–time filters. A: European Conference on Circuit Theory and Design. "Proceedings of the European Conference on Circuit Theory and Design (ECCTD 2013)". Dresden: Institute of Electrical and Electronics Engineers (IEEE), 2014, p. 1-4.
ISBN9783000434303
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