Electric Motorcycle Control Lever Feedback for Drive and Regen Modulation
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Solution Overview
Problem
Existing straddled electric vehicles lack operability in controlling the drive force of the electric motor, particularly through the operating members.
Innovation Solution
A control system with a first and second operating member, a control device, and a load adjusting device that varies the operating load on the second member based on the operating amount, enhancing the operability by providing a progressive reduction and blockage range for the second member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a constant operating load is applied to the second operating member, then the structure is simple, but the operability and operator feedback are poor
Solution Approach 1:
The operating load on the second operating member is made variable rather than constant. The load adjusting device dynamically adjusts the operating load based on the operating amount of the second operating member, providing progressive resistance that enhances operator feedback and control precision without requiring overly complex mechanisms
Solution Approach 2:
The load adjusting device provides force feedback to the operator through the second operating member. By making the operating load vary with the operating amount, the system creates a tactile feedback loop that allows the operator to sense the reduction amount of drive force or regenerative brake force, improving operability through sensory feedback
2Measurement precision
If the operating load on the second operating member is increased to enhance control precision, then the control precision improves, but the ease of operation decreases
Solution Approach 1:
The operating load is made dynamically variable rather than fixed. It increases progressively with the operating amount of the second operating member, providing lighter resistance during initial operation for ease of use, and progressively heavier resistance as the operating amount increases to enhance control precision for larger reductions
3Adaptability or versatility
If the second operating member is designed with a wide operating range for versatile control, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The operating range of the second operating member is divided into multiple sub-ranges (first sub-range, second sub-range, third sub-range) with different operating load characteristics. This segmentation allows each sub-range to be optimized for specific control needs while the load adjusting device manages the transitions between ranges through systematic load variations
Data Source
AI summary
A control system for a straddled vehicle including an electric motor for driving the straddled vehicle, the electric motor being configured to generate a drive force and a regenerative brake force. The control system includes: a first operating member for controlling the drive force of the electric motor, a second operating member for reducing either the drive force or the regenerative brake force of the electric motor; a control device configured to control the drive force of the electric motor in accordance with an operation of the first operating member, and to reduce either the drive force or the regenerative brake force of the electric motor in accordance with an operation of the second operating member, and a load adjusting device adjusting an operating load acting on the second operating member based on an operating position of the second operating member.