Download Control Using Logic-Based Switching by A.Stephen Morse PDF

By A.Stephen Morse

A logic-based switching controller is one whose subsystems contain not just generic dynamical parts corresponding to integrators, summers, profits and so on. yet event-driven common sense and linked switches besides. In one of these procedure the predominantly logical part is the manager, mode changer, and so forth. there was starting to be curiosity in recent times in selecting what may be won from using "hybrid" controllers of this sort. To this finish a workshop used to be hung on Block Island with the purpose of bringing jointly contributors to debate the study and customary curiosity within the box. This quantity not just comprises contributions from those that have been current at Block Island but in addition extra fabric from those that weren't. subject matters coated contain: hybrid dynamical structures, regulate of hard-bound limited and nonlinear structures, car difficulties regarding switching keep an eye on and method keep watch over within the face of large-scale modeling blunders.

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In Proceedings of the 32nd IEEE Conference on Decision and Control, pages 294-299, San Antonio, Texas, 1993. [15] J. A. J. D. Lemmon. Digital control from a hybrid perspective. In Proceedings of the 33rd IEEE Conference on Decision and Control, pages 4241-4246, Lake Buena Vista, FL, 1994. [16] H. J. Sussmann. Regular synthesis for time-optimal control of single-input real analytic systems in the plane. SIAM. J. , 25(5):11451162, September, 1987. [17] L. Tavernini. Differential automata and their discrete simulators.

Apart from the controlled jumps, the state is subject to piecewise constant real vector valued controls. A variety of optimal control problems are solved for the systems in this class. A. Nerode and W. Kohn introduced the notion of a small topology [13],[2], which is the information space of the declarative controller. Furthermore, in [11] and [12], they convert an optimal control problem (with e-tolerance) into a linear programming problem based upon the discrete topology. In this framework, the state of a discrete event system (DES) is defined as a segment of a trajectory generated by a fixed control function within a pre-decided time interval, and a discrete control action is interpreted as a transition from one control function to the next.

In fact, the problem is much more constrained in the case of embedded systems than in the case of general-purpose computing. For example, embedded software cannot use unconstrained dynamic memory allocation nor virtual memory. This is due to the physical constraints (the absence of a swapping device), to real-time constraints, and to the need to partition the specification between software and hardware. For some highly critical applications even the use of a stack may be forbidden, and everything must be dealt with by polling and static variables.

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