Electric Braking Device Adaptive Parking Lock Control

The patent applies dynamics by making the parking brake control adaptive rather than static. The control unit dynamically adjusts the timing of lock mechanism activation based on real-time detection of pressing force magnitude. When strong braking is detected (pressing force exceeds threshold), the system delays lock activation until braking force decreases, whereas under normal conditions the lock activates immediately. This dynamic response resolves the contradiction by ensuring reliable parking brake engagement only when appropriate, eliminating the need for excessive caliper strength design.

The patent changes the control parameter from a simple binary switch signal to a multi-parameter control system that monitors pressing force magnitude and duration. By introducing pressing force threshold detection and timing-based control logic, the system transforms the parking brake activation from an immediate response to a conditionally delayed response. This parameter change enables the system to distinguish between normal parking brake requests and requests during strong braking, thereby avoiding excessive force application and reducing caliper strength requirements.

The system employs dynamic control logic that adapts the parking brake activation timing based on real-time braking force conditions. The control unit continuously monitors the pressing force signal and adjusts the lock mechanism activation timing accordingly. During strong braking operations, the system detects elevated pressing forces and delays lock activation until the force subsides below a predetermined threshold, ensuring the parking brake engages only when appropriate. This dynamic approach maintains parking brake functionality while eliminating the need for oversized components.

The patent transforms the control parameter from a simple switch state to a composite parameter incorporating pressing force magnitude and time duration. By introducing force threshold detection and timing-based decision logic, the system changes how the parking brake response is determined. The control unit evaluates both the switch signal and the pressing force characteristics, activating the lock mechanism only when conditions indicate a genuine parking brake request rather than a concurrent strong braking operation. This parameter transformation enables compact design by preventing excessive force scenarios.

The patent implements feedback control by having the control unit continuously monitor the pressing force signal generated during braking operations and use this information to regulate parking brake activation. The system feeds back the detected pressing force magnitude to the control logic, which then determines whether to activate the lock mechanism. This feedback mechanism prevents control interference by ensuring the parking brake engages only when pressing force is within appropriate ranges, eliminating the need for complex independent control systems while maintaining reliable halted state maintenance.

The control system performs self-service by automatically detecting braking force conditions and making intelligent decisions about parking brake activation without requiring additional complex control logic. The pressing force signal serves dual purposes: it controls service brake application and simultaneously provides the criterion for determining parking brake activation timing. This self-service approach simplifies the overall control system by using existing sensor data for multiple control functions, avoiding control interference while maintaining reliability.