Derailleur Control Device Power Optimization
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Solution Overview
Problem
Human-powered vehicle control systems face inefficiencies in power consumption when attempting to reach target movements, particularly when the electric power source is in a low state, leading to increased power consumption during retry actions.
Innovation Solution
A control device that adjusts the actuating manner and frequency of the actuator based on the state of the electric power source, reducing power consumption by altering the number of movements and time periods in response to varying power levels and capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controller continues to control the actuator to move the output member at the same number of times in retry actions regardless of power source state, then the actuator can attempt to reach target movement with consistent effort, but power consumption increases when the electric power source is in a low state
Solution Approach 1:
The controller dynamically adjusts the number of actuator movements in retry actions based on the detected power source state. When low power is detected, the controller reduces the number of retry movements compared to normal power conditions, creating an adaptive system that responds to changing power availability
Solution Approach 2:
The controller changes the operational parameter (number of movements) of the actuator based on the power source state. By detecting power levels and adjusting the movement count parameter accordingly, the system optimizes power consumption while maintaining functional reliability
2Reliability
If the controller increases the number of actuator movements to ensure target movement is reached, then reliability of target achievement improves, but power consumption increases which is problematic when electric power source is depleted
Solution Approach 1:
The controller applies partial action by reducing the number of retry movements when power is low, rather than attempting full or excessive movements. This partial approach is sufficient to achieve target movement under constrained power conditions while avoiding unnecessary energy loss
Solution Approach 2:
The controller implements feedback by detecting the power source state and using this information to adjust the actuator's retry behavior. The system continuously monitors power levels and modifies movement parameters accordingly, creating a closed-loop control system
Data Source
AI summary
A control device comprises a controller configured to control an actuator to move an output member in a first actuating manner in a first state where an electric power source configured to supply electricity to the actuator is in a first power-source state and where a movement of the output member does not reach a target movement after the controller controls the actuator based on control information. The controller is configured to control the actuator to move the output member in a second actuating manner different from the first actuating manner in a second state where the electric power source is in a second power-source state different from the first power-source state and where the movement of the output member does not reach the target movement after the controller controls the actuator based on the control information.