Integrated Model-Based Safety Analysis

A system for integrated model-based safety analysis, the system comprising:

• a digital data storage medium configured to store a safety analysis model that is integrated into a system development model of a safety-critical system, the system development model comprising model components and the safety analysis model modeling a failure logic separately for each of the model components;
• and
• a microprocessor configured to:
• represent dependencies among the model components with a design structure matrix, the design structure matrix representing each of the model components with a row and a column and showing dependencies between the model components with corresponding entries;
• sequence the design structure matrix;
• and
• identify at least one dependency loop and loop components in the sequenced design structure matrix, the loop components being part of the at least one dependency loop.

A non-transitory computer-readable storage medium storing a computer program having instructions executable by a processor for integrated model-based safety analysis, the instructions comprising:

• integrating a safety analysis model into a system development model of a safety-critical system, the system development model comprising model components and the safety analysis model modeling a failure logic separately for each of the model components;
• representing dependencies among the model components with a design structure matrix, the design structure matrix representing each of the model component with a row and a column and showing dependencies between the model components with corresponding entries;
• sequencing the design structure matrix;
• and
• identifying at least one dependency loop and loop components in the sequenced design structure matrix, the loop components being part of the at least one dependency loop.