Brake ECU Abnormality Detection with Dynamic Range Switching

The patent applies the dynamics principle by making the failure detection range variable rather than fixed. The control device dynamically adjusts the failure detection range based on the operation direction (advancing or returning) determined from sensor output changes. This allows the detection system to adapt to hysteresis effects during different brake operation phases, improving detection accuracy without requiring overly complex fixed thresholds

The patent changes the parameter of the failure detection range based on operation direction. By determining whether the brake system is in an advancing or returning state and adjusting the detection range accordingly, the system accounts for hysteresis in the sensor relationships. This parameter change approach resolves the contradiction by maintaining simple detection logic while improving accuracy through adaptive range selection

The patent segments the failure detection process by dividing the detection ranges into distinct advancing and returning operation ranges. By determining the current operation direction and selecting only the relevant range for failure determination, the system avoids redundant checks in the other range. This segmentation maintains comprehensive monitoring while reducing unnecessary processing operations

The patent applies partial action by performing failure determination only in the currently active operation direction range rather than continuously across all ranges. This selective approach maintains reliability by thoroughly checking the relevant range while avoiding excessive processing in inactive ranges, thus reducing time loss without compromising monitoring comprehensiveness