Abstrad-Many design problems, e.g. in control theory, amount to tuning a parameter vector c so as to guarantee that specifications are met for all feasible values of some unknown perturbation vector p. A new prototype algorithm for solving this guaranteed-tuning problem is proposed, and its convergence properties are established. It applies when the design specifications translate into a finite...

Timed token networks such as FDDI networks have been widely deployed to support real-time traffic such as voice and video communications. However the medium access control (MAC) protocol of FDDI allows transmission of synchronous messages up to at most one half of the total bandwidth of the network. Shin and Zheng has proposed a modification to the FDDI MAC protocol, called FDDI-M, which can do...

D e p o r t m e n l o f ~ y s r e m r ~ ~ ~ i ~ ~ ~ ~ i ~ A ~ I ~ I ~ ~ ~ N ~ ~ , ~ ~ ~ I uniuer. mation on the most likely path to be taken by a sity. GP.O. BOX 4, Conberro, A.C.T. 2601, A W I I ~ I ~ O trajectory leaving some region containing the origin, and the expected time for this exit to occur. Received 6 December 1988 In fact, the trajectory of the closed loop system Revised 18 Februar...

In this paper we present an experimental test bed for the development and evaluation of control systems for unmanned helicopters. The test bed consists of a small unmanned helicopter, mounted on a flying stand that permits all possible movements but prevents the helicopter from damaging or crashing. A fuzzy controller is developed in MATLAB and tested in the helicopter using the test bed. The c...

With the increasingly fierce market competition, the demand for effective project cost estimation methods is increasingly urgent. In this paper, the author analyse the intelligent control of engineering project based on case-based reasoning. The use of traditional methods to estimate the cost of the project has exposed many problems. The application of case-based reasoning based on the experien...

In the development of embedded hard real-time systems the ability to guarantee worst case execution times is gaining importance and complexity. The fast evolving processor acceleration techniques constantly increase the gap between a processor which uses the accelerations and one which does not. Modeling cache, pipelines and other parts of the processor gets increasingly difficult and time cons...

Implicit Path Enumeration Technique (IPET) is currently largely used to compute Worst Case Execution Time (WCET) by modeling control flow and architecture using integer linear programming (ILP). As precise architecture effects requires a lot of constraints, the super-linear complexity of the ILP solver makes computation times bigger and bigger. In this paper, we propose to split the control flo...

Statically estimating the worst case execution time (WCET) of a program is important for real-time software. This is difficult even in the programming language level due to the inherent difficulty in detecting and exploiting infeasible paths in a program’s control flow graph. In this paper, we propose an efficient method to exploit infeasible path information for WCET estimation of a loop witho...