The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We propose a two-tiered hierarchical approach for detecting faults in embedded control software during their runtime operation: The observed behavior is monitored against the appropriate specifications at two different levels, namely, the software level and the controlled-system level. (The additional controlled- system level monitoring safeguards against any possible incompleteness at the software...
We present a method for obtaining a discrete abstraction of a hybrid system modeled as an input-output hybrid automaton (I/O-HA), generalizing our earlier work on linear hybrid automaton with no inputs or outputs. The discrete abstraction we present preserves the discrete behaviors (the set of state trajectories sampled at instances immediately after the discrete transitions) of an I/O-HA, and thus...
Some discrete event systems such as software are typically infinite state systems, and a commonly used technique for performing formal analysis such as automated verification is based on their finite abstractions. In this paper, we consider a model for reactive untimed infinite state systems called input-output extended finite automaton (I/O-EFA), which is an automaton extended with discrete variables...
We introduce a tool for analyzing the control and diagnosis issues in discrete-event systems. The tool consists of a program written in C that accepts command line arguments and a GUI front end written in Java that can be used to execute the command line driven program. The tool accepts models of underlying systems and specifications in form of finite automata and supports various automata-level computations...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.