Title :
Nonlinear dynamical systems utilizing pulse modulation signals and a CMOS chip generating arbitrary chaos
Author :
Morie, Takashi ; Sakabayashi, Souta ; Nagata, Makoto ; Iwata, Atsushi
Author_Institution :
Fac. of Eng., Hiroshima Univ., Japan
Abstract :
This paper presents nonlinear dynamical systems utilizing pulse modulation signals suitable for VLSI implementation. The proposed circuits implement discrete-time continuous-state dynamics by analog processing in time domain. Arbitrary nonlinear transfer functions can be generated using the conversion from an analog voltage to a pulse-width modulation (PWM) signal. The nonlinear waveforms that have the same shape as the inverse function of the desired transfer function are supplied. A CMOS chip generating arbitrary chaos has been designed and fabricated using a 0.4 μm CMOS process. Chaos using the tent map and logistic map has successfully been observed using the chip
Keywords :
CMOS analogue integrated circuits; VLSI; analogue processing circuits; chaos generators; nonlinear dynamical systems; pulse modulation; 0.4 micron; CMOS chip; VLSI implementation; analog processing; arbitrary chaos; discrete-time continuous-state dynamics; inverse function; logistic map; nonlinear dynamical systems; nonlinear transfer functions; pulse modulation signals; tent map; time domain; CMOS process; Chaos; Circuits; Nonlinear dynamical systems; Pulse generation; Pulse modulation; Pulse width modulation; Signal generators; Transfer functions; Very large scale integration;
Conference_Titel :
Microelectronics for Neural, Fuzzy and Bio-Inspired Systems, 1999. MicroNeuro '99. Proceedings of the Seventh International Conference on
Conference_Location :
Granada
Print_ISBN :
0-7695-0043-9
DOI :
10.1109/MN.1999.758872
