Vehicle Control Apparatus Abnormality Detection Logic

The patent creates a simplified copy of the monitoring function that only replicates the essential calculation logic needed for abnormality detection, rather than copying the entire complex configuration. The monitoring portion uses a reduced version that focuses only on comparing input values with expected output patterns, eliminating the need to duplicate complex fail-safe calculations and large ROM requirements.

The patent extracts only the critical monitoring function from the complex calculation processing, separating the abnormality detection capability from the full calculation logic. This allows the monitoring portion to use a simplified configuration that only includes the necessary input value processing and comparison logic, while the complex fail-safe calculation logic remains in the monitoring object only.

The patent creates a lightweight copy of the monitoring function that only replicates the essential calculation logic needed for abnormality detection, rather than copying the entire complex configuration. The monitoring portion uses a reduced version that focuses only on comparing input values with expected output patterns, eliminating the need to duplicate complex fail-safe calculations and large ROM requirements.

The monitoring portion performs only the minimum necessary calculation action to detect abnormalities - specifically, it processes input values through a simplified logic that checks whether output values fall within expected ranges. This partial action approach provides sufficient abnormality detection without requiring the full fail-safe calculation capability, thereby reducing ROM requirements and device cost.

The patent segments the calculation system into two distinct parts: the monitoring object that handles complex fail-safe calculations for all vehicle situations, and the monitoring portion that handles only simple input value processing and output verification. This segmentation allows the complex logic to be isolated to where it is needed while keeping the monitoring portion simple and cost-effective.

The patent applies different levels of complexity to different parts of the system - the monitoring object receives full complex logic capability to handle all vehicle situations, while the monitoring portion uses simplified logic appropriate only for its verification function. This local quality approach ensures reliability where needed while avoiding unnecessary complexity and cost in the monitoring portion.