Hybrid systems are networks of interacting digital and analog devices.
Control systems for inherently unstable aircraft and computer aided
manufacturing are typical applications for hybrid systems, but due to
the rapid development of processor and circuit technology modern cars
and consumer electronics use software to control physical processes. The
identifying characteristic of hybrid systems is that they incorporate
both continuous components governed by differential equations and also
digital components - digital computers, sensors, and actuators
controlled by programs. This volume of invited refereed papers is
inspired by a workshop on the Theory of Hybrid Systems, held at the
Technical University, Lyngby, Denmark, in October 1992, and by a prior
Hybrid Systems Workshop, held at Cornell University, USA, in June 1991,
organized by R.L. Grossman and A. Nerode. Some papers are the final
versions of papers presented at these workshops and some are invited
papers from other researchers who were not able to attend these
workshops.