Manuscript received June 18;
1994;
revised August 9;
1995. This work was supported by the Electric Power Research Institute. C.-W. Tan is with GeoStar Technology Inc;
Santa Clara;
CA;
95051;
USA;
M;
Varghese;
P;
Varaiya;
and F. F. Wu are with the Electrical Engineering and Computer Sciences Department;
University of California;
Berkeley;
CA 94720 USA. IEEE Log Number 9414947. Chaos is a concept describing bounded;
unstable behavior. More detailed definitions follow in Section 111;