Automatic Handle Lock Steering for Saddle-Riding Vehicles
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Solution Overview
Problem
Existing saddle-riding vehicle handle lock operations are not sufficiently convenient, as they require manual steering to the lock position.
Innovation Solution
A saddle-riding vehicle equipped with a suspension device, a chassis frame, a handle lock mechanism, a steering actuator, and a controller that automatically steers the suspension device to the handle lock position upon detecting a predetermined lock standby state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual steering is required to reach the handle lock position, then the handle lock operation can be performed, but the operation convenience is reduced due to additional steering steps
Solution Approach 1:
The controller automatically performs the steering action to reach the handle lock position before the actual locking operation. When the suspension device is in the lock standby state, the controller operates the steering actuator to turn the suspension device to the handle lock position, eliminating the need for manual steering steps and improving operation convenience.
2Ease of operation
If the suspension device is automatically turned to the handle lock position, then the steering operation is omitted and convenience is improved, but the chassis may become inclined toward the side stand
Solution Approach 1:
The controller monitors the suspension device's turning angle and the chassis posture during automatic steering to the handle lock position. Based on this feedback, the controller adjusts the steering actuator's operation to prevent excessive chassis inclination toward the side stand, maintaining chassis stability while achieving automatic steering functionality.
3Reliability
If the handle lock control is performed without time monitoring, then the control logic is simple, but the reliability is reduced due to potential incomplete operations
Solution Approach 1:
The controller monitors whether the suspension device has fully turned to the handle lock position and whether the handle lock actuator has fully operated to the lock state within a specified time period. This time-based feedback mechanism ensures reliable completion of the handle lock operation while maintaining manageable control logic complexity.
Data Source
AI summary
A saddle-riding vehicle includes a front wheel suspension device which supports a steering wheel (front wheel) and a steering handle (bar handle 4), a chassis frame which supports the front wheel suspension device to be steerable, a handle lock mechanism 60 which locks the steering of the front wheel suspension device with respect to the chassis frame at a predetermined handle lock position P1, a steering actuator 43 which applies an assist torque to the front wheel suspension device, and a control device 23 which controls the driving of the steering actuator 43. The control device 23 operates the steering actuator 43 so that the front wheel suspension device is turned to the handle lock position P1 when detecting a predetermined lock standby state.