Brake Control Device ABS Timing Optimization
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Solution Overview
Problem
Existing brake control systems for human-powered vehicles may execute Antilock Brake System (ABS) control at undesirable times due to predefined conditions, leading to suboptimal braking performance.
Innovation Solution
A brake control device with an electronic controller that limits ABS control by setting a second predetermined condition based on various factors such as traveling speed, human-driven operation, vehicle state, and environmental conditions, ensuring ABS control is executed at a preferred timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ABS control is executed based on predetermined conditions, then braking performance is improved, but ABS control may be executed at undesirable timing reducing overall effectiveness
Solution Approach 1:
The system changes the parameters used for ABS control activation by introducing a second predetermined condition based on limitation information (cadence, power, torque, vehicle state, environment) in addition to the first predetermined condition. This multi-parameter approach ensures ABS control is executed at more appropriate timing by considering both braking performance requirements and operational context.
2Reliability
If ABS control is executed whenever the first predetermined condition is satisfied, then braking safety is enhanced, but unnecessary ABS control execution occurs during unsuitable operating conditions
Solution Approach 1:
The system introduces a second condition parameter set (limitation information including cadence, power, torque, vehicle state, and environment) that must be satisfied alongside the first predetermined condition. This dual-condition parameter approach prevents unnecessary ABS control execution during unsuitable operating conditions, reducing energy consumption while maintaining braking safety when needed.
3Reliability
If the second predetermined condition based on limitation information is added, then ABS control timing is optimized, but control system complexity increases
Solution Approach 1:
The electronic controller is designed to evaluate multiple types of limitation information (cadence, power, torque, vehicle state, environment) using a universal evaluation framework. This multi-functional approach optimizes ABS control timing by considering diverse operating conditions while managing system complexity through integrated processing of various parameters within a single control architecture.
Data Source
AI summary
A brake control device includes an electronic controller that controls a brake unit configured to brake a rotation body of a human-powered vehicle. The electronic controller limits ABS control in a case where a first predetermined condition for executing ABS control and a second predetermined condition for limiting ABS control are satisfied. The second predetermined condition is set based on limitation information that differs from information related to a traveling speed of the human-powered vehicle.