Accelerator Grip Control for Brake Hold on Straddle-Type Vehicles
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Solution Overview
Problem
Existing straddle-type vehicle systems face challenges in improving the operability of braking force keeping control, which is essential for enhancing the overall usability of these vehicles.
Innovation Solution
A controller and control method that enable braking force keeping control by utilizing rotational operation information from the accelerator grip, allowing the control mode to be initiated and terminated through intuitive rotational operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If braking force keeping control is enabled through conventional means (e.g., separate brake operation), then the braking force keeping function is achieved, but the operability and simplicity of operation are reduced
Solution Approach 1:
The accelerator grip is given multiple functions: it serves both as the accelerator operation component and as the trigger for braking force keeping control. By detecting rotational operations on the accelerator grip, the system enables braking force keeping control without requiring a separate brake operation, thus improving ease of operation while utilizing an existing component
Solution Approach 2:
The patent merges the accelerator grip operation with the braking force keeping control trigger. The rotational operation detection unit detects rotations of the accelerator grip, and this detection is used to trigger the braking force keeping control mode, combining two functions into a single operational interface
2Ease of operation
If braking force keeping control is enabled without relying on brake operation, then operability is improved, but the ability to distinguish between rider's braking intent and normal acceleration becomes challenging
Solution Approach 1:
The system uses dynamic characteristics of the accelerator grip operation to determine rider intent. By detecting rotational operations (which differ from normal acceleration operations in terms of rotation direction and pattern), the system can distinguish between braking intent and normal acceleration, preserving clarity of intent while improving ease of operation
Solution Approach 2:
The rotational operation detection unit provides feedback about the rider's operations on the accelerator grip. This feedback mechanism allows the control unit to understand the rider's intent by analyzing the nature of the rotational operation, ensuring that braking force keeping control is activated only when appropriate
Data Source
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AI summary
The invention obtains a controller and a control method capable of improving operability of a straddle-type vehicle. In a controller 20 and a control method according to the invention, an execution section of the controller 20 executes a control mode in which braking force keeping control for keeping a braking force generated to a straddle-type vehicle 1 without relying on a brake operation by a rider of the straddle-type vehicle 1 is enabled in response to a first trigger and the braking force keeping control is disabled in response to a second trigger. The execution section executes the control mode on the basis of rotational operation information as information on a rotational operation to rotate an accelerator grip, which is located at a reference position in an unloaded state by the rider and changes drive power generated to the straddle-type vehicle 1 when being rotated within an angle range located in a first direction with the reference position being a reference, within an angle range located in a second direction as a reverse direction from the first direction with the reference position being the reference.