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.
Today, the robots have been widely used in manufacturing industry, especially in flexible manufacturing system. Therefore, how to control them seems important issues since such competition for shared resources by concurrent job processes can lead to a system deadlock. Accordingly, many pioneers devote solving deadlock problem. In existing literature, the maximal number of forbidding FBM problem (MFFP)...
Petri nets have been recognized as one of the most powerful tools for modeling flexible manufacturing systems (FMSs). Deadlock prevention policies are used to solve the deadlock problems of FMSs. It is well known that theory of regions is the efficient method for obtaining maximally permissive controllers. All legal and live maximal behavior of Petri net models can be preserved by using marking/transition-separation...
Deadlock prevention policies are used to solve the deadlock problems of FMSs. The theory of regions is recognized as the unique method for obtaining maximally permissive (i.e., optimal) controllers in the existing literature. In this paper, the selective siphons and critical markings method [17] is merged in the new deadlock prevention policy. First of all, reachability graph is still needed. Second,...
Deadlock prevention, deadlock detection, and deadlock avoidance strategies are used to solve the deadlock problems of flexible manufacturing systems. The theory of regions is recognized as the unique method for obtaining maximally permissive (i.e., optimal) controllers in the existing literature. All legal and live maximal behavior of a Petri net model can be preserved by using a marking/transition-separation...
Petri nets have been recognized as one of the most powerful tools for modeling FMSs. The reason is that PNs are suited well to represent FMS characteristics such as present relations, concurrence, conflict and synchronization. On the other hand, it is well known that the marking/transition-separation instances (MTSIs) method with the theory of regions has been recognized as the best (i.e. maximally...
The theory of regions has been recognized as the optimal deadlock prevention policy based on the marking/transition-separation instance (MTSI) or the event-state-separation-problem (ESSP) method for obtaining a maximally permissive controller in existing literature. All legal and live maximal behavior of the Petri nets model can be held by using above methods. However, its major drawback is all MTSIs...
The theory of regions has been recognized as the optimal deadlock prevention policy based on the marking/transition-separation instance (MTSI) or the event-state-separation-problem (ESSP) method for obtaining a maximally permissive controller in existing literature. All legal and live maximal behavior of the Petri nets model can be held by using above methods. However, its major drawback is all MTSIs...
This paper presents an efficient method to obtain a maximally permissive deadlock prevention policy for a flexible manufacturing system based on theory of regions. The theory of regions policy can provides an optimal deadlock prevention controller which is based on the reachability graph. However, its disadvantage is the state explosion problem since all marking/transition-separation instances (MTSIs)...
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.