Safety előadás: 2017-11-07
Semester:
2017. ősz
Safety-Critical Systems: Requirements & Architecture
- Functional vs. extra-functional requirements
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Safety requirements
- Terminology
- Risk categories
- Safety integrity requirements, Safety integrity levels
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Dependability related requirements
- Threats to dependability
- Attributes of dependability
- Dependability metrics
- Characteristics of faults
- Means to improve dependability
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Safety architecture
- Objectives of architecture design
- Typical architectures for fail-stop operation
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Typical architectures for fault-tolerant systems
- Categories of redundancy
- Fault tolerance for permanent HW faults
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Fault tolerance for transient HW faults
- error detection
- damage assessment
- recovery (backward, forward, compensation)
- fault treatment
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Fault tolerance for SW faults
- N-version programming
- Recovery blocks
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