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The case study analyzed in the report involves the behavioral specification and verification of a three-stage pipeline consisting of mutually concurrent modules which also compete for a shared resource. The system components are specified in terms of Concurrent State Machines (CSM) and the verification technique used is the temporal model checking in the(More)
The paper presents a flexibility of management of vehicles in Personal Rapid Transit (PRT) network. The algorithm used for delivering empty vehicles for waiting passengers is based on multiparameter analysis. Due to its distributed construction, the algorithm has a horizon parameter, which specifies the maximum distance between stations the communications(More)
An engineering design process may involve software modules that can executed concurrently. Concurrent modules can be very easily subject to some synchronization errors. This paper discusses verification process for such engineering software. We present a method for verification that requires several steps. First, the state diagram models are constructed(More)
Experimental data used as a base for the design of rough controllers may result from measurements done in systems with a delay in the controller, which (even if the delay is purely deterministic) could make raw data look as if they were 'imprecise' or 'scattered'. Awareness of this phenomenon supported by frequency domain identification can improve the(More)
The case study analyzed in the paper illustrates the example of model checking in the COSMA environment. The system itself is a three-stage pipeline consisting of mutually concurrent modules which also compete for a shared resource. System components are specified in terms of Concurrent State Machines (CSM) The paper shows verification of behavioral(More)
The aim of this paper is to demonstrate how the COSMA environment can be used for system modeling. This environment is a set of tools based on Concurrent State Machines paradigm and is developed in the Institute of Computer Science at the Warsaw University of Technology. Our demonstration example is a distributed brake control system dedicated for a railway(More)
Traffic Light Controller, a typical benchmark device, is specified and verified using of a formal model called Concurrent State Machines (CSM) and the software environment COSMA 2.0, which supports the system level specification and analysis of concurrent, asynchronous and communicating units. The TLC itself is a system of three concurrent components (the(More)
The organization of real-time distributed systems, their design methodology and related topics are issues a vast literature is devoted to [e.g. 1, 2, 3]. On the other hand, whenever a practical implementation is considered, the designers usually face the limitations and requirements that are specific to a particular environment (or user) context and that(More)