ABS Slip Threshold Control for Intentional Drifting
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Solution Overview
Problem
Conventional anti-lock brake systems prevent a vehicle operator from intentionally sliding or drifting when desired, despite providing safety benefits during ordinary operation.
Innovation Solution
A user interface device allows the vehicle operator to manipulate the slip ratio threshold of the anti-lock brake system, enabling intentional slide or drift maneuvers while maintaining safety benefits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the anti-lock brake system maintains a fixed slip ratio threshold to ensure safety during ordinary operation, then safety and steering control are improved, but the vehicle operator cannot intentionally slide or drift the vehicle when desired
Solution Approach 1:
The slip ratio threshold is changed from a fixed value to a dynamically adjustable parameter. The control unit allows the slip ratio threshold to be modified in real-time based on operator input through the operation unit, enabling the system to adapt between safety-oriented fixed threshold operation and maneuver-oriented adjustable threshold operation.
Solution Approach 2:
An operation unit (user interface) is introduced as an intermediary between the operator and the anti-lock brake control system. This intermediary allows the operator to communicate maneuver intentions to the control unit, which then adjusts the slip ratio threshold accordingly, bridging the gap between operator intent and system response.
2Reliability
If the anti-lock brake system reduces braking force when slip ratio exceeds the threshold, then wheel lockup is prevented and steering control is maintained, but intentional slide or drift maneuvers are interrupted
Solution Approach 1:
The operator uses the operation unit to pre-indicate the intention to perform a slide or drift maneuver before the maneuver begins. This preliminary action allows the control unit to adjust the slip ratio threshold in advance, preventing the anti-lock brake system from interrupting the intended maneuver while maintaining safety during ordinary operation.
Solution Approach 2:
The control unit changes the slip ratio threshold parameter based on operator input. When the operator indicates a maneuver intention through the operation unit, the system adjusts the threshold parameter to allow higher slip ratios, thereby preventing unintended braking force reduction during intentional slides or drifts.
3Adaptability or versatility
If the slip ratio threshold is made adjustable to allow intentional slides or drifts, then driving freedom is improved, but the system complexity increases
Solution Approach 1:
The operation unit serves multiple functions: it detects operator input, communicates maneuver intentions to the control unit, and enables the system to operate in both fixed-threshold (safety) mode and adjustable-threshold (maneuver) mode. This multi-functionality reduces the need for separate dedicated components for each mode.
Solution Approach 2:
The control unit automatically adjusts the slip ratio threshold based on operator input without requiring manual intervention or complex external control systems. The system serves itself by interpreting operator intentions through the operation unit and making appropriate threshold adjustments autonomously.
Data Source
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AI summary
A novel wheel slip control device and method improve upon conventional anti-lock brake systems by providing a user interface device which allows the vehicle operator to manipulate the slip ratio threshold of the anti-lock brake system on demand as he or she executes a slide or drift maneuver-thus preventing the system from interrupting the maneuver while also retaining the safety benefits of the anti-lock brake system during ordinary vehicle operation.