Ensuring Safe and Reliable Steering Control in Automotive Systems

AIsemi has successfully implemented a functional safety framework for automotive steering functions, ensuring safe vehicle maneuverability under normal and failure conditions. Through a structured approach involving Hazard Analysis and Risk Assessment (HARA), FMEDA, and safety mechanism implementation, we have enhanced the safety and reliability of steering control systems in compliance with ISO 26262.

Project Overview

The project focused on identifying potential failure modes, analyzing their impact, and implementing safety mechanisms to mitigate risks in steering control. AIsemi’s expertise in functional safety assessment, diagnostic coverage analysis, and redundancy strategies played a key role in ensuring a fail-operational steering system.

Key Objectives

• HARA Execution: Identified safety hazards, assessed risk levels, and derived safety goals.
• FMEDA Analysis: Evaluated hardware failure modes and diagnostic coverage to meet ASIL targets.
• Safety Mechanism Implementation: Developed redundancy strategies, error detection mechanisms, and fail-safe responses.
• Fault Tolerance Strategies: Ensured continuous steering operation under fault conditions.
• ASIL Compliance: Achieved ASIL-C/D compliance for steering components.

Technical Approach

• HARA-Based Risk Assessment: Identified steering-related hazards and classified risks based on exposure, controllability, and severity.
• FMEDA for Component-Level Analysis: Evaluated failure rates, single-point faults (SPFs), and latent faults.
• Redundant Architecture & Monitoring: Integrated dual-sensor monitoring and torque feedback systems to detect and mitigate failures.
• Fault Injection & Validation: Simulated real-world error scenarios to verify system robustness under safety-critical conditions.
• Traceability & Verification: Ensured all functional safety requirements were met through detailed verification and validation (V&V) processes.

Outcome & Impact

• Improved Steering Safety: Enhanced failure detection and mitigation strategies.
• Increased System Reliability: Developed fault-tolerant mechanisms for continued safe operation.
• Regulatory Compliance: Ensured adherence to ISO 26262 and ASIL-C/D requirements.
• Optimized Performance: Implemented efficient error-handling strategies without compromising system responsiveness.

Conclusion

Through rigorous safety analysis and implementation of fault-tolerant mechanisms, AIsemi has strengthened the safety and reliability of steering functions in modern vehicles. Our structured approach ensures compliance with industry safety standards while optimizing system performance for next-generation automotive steering technologies.

Stay tuned for more industry-specific use cases showcasing Aisemi’s expertise in functional safety, semiconductor validation, and safety-critical system design!