Pivot-Angle Control for Human-Powered Vehicle Towing Stability
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Solution Overview
Problem
Existing human-powered vehicles lack a control system to manage electrical components based on the swivel state of the riding portion and carrier, leading to instability and discomfort during towing.
Innovation Solution
A control system with a sensor to detect the pivot angle between the riding portion and carrier, and an electronic controller to adjust electrical components like the drive unit, suspension, and derailleurs based on this angle, ensuring smooth and stable travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no control system is provided for electrical components based on swivel state, then the vehicle structure remains simple, but the vehicle becomes unstable and uncomfortable during towing
Solution Approach 1:
The control system dynamically adjusts electrical components (drive unit, suspension, derailleurs) based on the real-time pivot angle detected by the sensor. The electronic controller continuously monitors the swivel state and modifies component behavior accordingly, transforming a static system into a dynamic one that adapts to changing towing conditions, thereby improving stability without requiring overly complex fixed mechanisms
Solution Approach 2:
The system implements feedback control by using a sensor to detect the pivot angle between the riding portion and carrier, feeding this information to the electronic controller, which then adjusts the electrical components. This closed-loop feedback mechanism enables the system to respond to actual swivel states and maintain stability, resolving the contradiction between simplicity and reliability
2Ease of operation
If the motor output is not adjusted according to swivel state, then the control system remains simple, but the vehicle loses maneuverability and stability
Solution Approach 1:
The motor output is dynamically adjusted based on the detected pivot angle. The electronic controller modifies the drive unit's power delivery in real-time according to the swivel state, enabling the vehicle to maintain optimal maneuverability across different towing conditions. This dynamic adjustment prevents the need for complex mechanical linkages while improving ease of operation
Solution Approach 2:
The system changes the operational parameters of the motor (output power, torque) based on the pivot angle detected by the sensor. By adjusting these parameters dynamically rather than using fixed mechanical arrangements, the system achieves improved maneuverability without proportionally increasing device complexity
Data Source
AI summary
A control system is provided for controlling an electrical component of a human-powered vehicle in accordance with a swivel state of a riding portion and a carrier. The control system includes a sensor, an electrical component and an electronic controller. The sensor is configured to output a signal corresponding to a pivot angle of a pivot portion provided between the carrier and the riding portion located between the carrier and a handle. The electronic controller is configured to control the electrical component in accordance with the signal output from the sensor.