DocumentCode :
307488
Title :
Development of a nonlinearly deterministic signal generator for real time chaos control testing
Author :
Witkowski, Francis X. ; Penkoske, Patricia A. ; Plonsey, Robert ; Kaplan, Daniel T. ; Spano, Mark L. ; Ditto, William L. ; Kavanagh, Katherine M.
Author_Institution :
Sch. of Med., Alberta Univ., Edmonton, Alta., Canada
Volume :
1
fYear :
1995
fDate :
20-25 Sep 1995
Firstpage :
287
Abstract :
Chaotic dynamics have been successfully exploited in feedback control strategies. Recently, the authors have described the existence of unstable fixed points during ventricular fibrillation (VF), similar to those previously used in chaos control. Prior to embarking on control attempts of VF, a signal source was designed with known nonlinearly deterministic dynamics with well characterized stable and unstable manifolds as well as fixed point location. This ensured that the complex real-time data acquisition/analysis necessary to attempt such control was feasible for the interval durations typical of VF. A signal source was designed that can operate on any IBM compatible PC via the parallel port, and generates a waveform whose inter-event interval is nonlinearly deterministic with timing resolution of 0.1 μsec with a range from 20 msec to 1.5 sec, independent of PC clock speed
Keywords :
biocontrol; cardiology; chaos; feedback; signal generators; testing; 0.1 mus; 20 ms to 1.6 s; PC clock speed; cardiac electrical activation; defibrillation; feedback control strategies; fixed point location; inter-event interval; nonlinearly deterministic interval; nonlinearly deterministic signal generator; parallel port; real time chaos control testing; real-time data acquisition; signal source; stable manifolds; unstable fixed points; unstable manifolds; ventricular fibrillation; Chaos; Data acquisition; Data analysis; Feedback control; Fibrillation; Signal analysis; Signal design; Signal generators; Signal resolution; Timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
Type :
conf
DOI :
10.1109/IEMBS.1995.575113
Filename :
575113
Link To Document :
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