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Abstract : |
The * paper addresses the safety analysis and evaluation of a hard real-time, interlocking, railway control system. The major objective is to demonstrate an efficient methodology capable of capturing crucial system dependability characteristics while allowing meaningful results to be obtained within a reasonable time. The evaluation is done by simulating the execution of the control software under transient hardware faults. The study demonstrates that simulation is a valuable approach to quick and accurate assessment of critical, railway control systems. It allows to study the trade-offs between different alternatives and to quantify the impact of crucial system parameters (e.g., scheduling policy in data exchange among redundant units in the system) on the overall system dependability. 1., |
