E-bike Controller Automatic State Switching
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Solution Overview
Problem
Existing human-powered vehicle control devices require multiple steps for riders to switch between motor control states, increasing operational complexity and battery consumption.
Innovation Solution
A controller that automatically switches between a first control state, where motor assistance is based on human driving force input, and a second control state, where motor assistance is independent of human driving force input, with conditions such as traveling speed and operation unit activation determining the control state, reducing the number of steps needed by the rider.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control device requires manual switching between control states through multiple steps, then the motor control can be precisely adjusted according to rider input, but the operational complexity increases and battery consumption increases
Solution Approach 1:
The control device automatically detects when the rider is pedaling and autonomously switches from the operation-unit-controlled state to the pedaling-force-controlled state, eliminating the need for manual switching operations by the rider
Solution Approach 2:
The control device continuously monitors detection information from sensors (such as crank rotation detection) to determine whether the rider is pedaling, and based on this feedback, automatically adjusts the control state without requiring explicit rider input for state switching
2Ease of operation
If the control device requires manual switching between control states, then precise motor control is achieved, but battery consumption increases due to multiple operational steps
Solution Approach 1:
The control device autonomously manages state transitions based on detected rider behavior, eliminating the need for repeated manual operations that would consume additional energy
Solution Approach 2:
The control device maintains continuous motor assistance by seamlessly transitioning between control states without interrupting the propulsion force, ensuring uninterrupted useful action while reducing operational steps
Data Source
AI summary
A human-powered vehicle control device is provided for a human-powered vehicle. The human-powered vehicle control device comprises a controller that controls a motor to apply a propulsion force to the human-powered vehicle. The controller is configured to control the motor in at least one of a first control state, in which the controller controls the motor in accordance with human driving force input to an input rotary body of the human-powered vehicle and which includes a plurality of assist stages switchable by an operation unit differing from input rotary body, and a second control state, in which the controller controls the motor in accordance with operation of the operation unit. In a case where human driving force is input to the input rotary body in the second control state, the controller is configured to control the motor in the first control state.