Lean Vehicle Cruise Control With Rider-Triggered Auto Stop

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Solution Overview

Problem

Lean vehicles, such as motorcycles, are prone to instability and falling over due to inappropriate speed control, especially when cruise control is applied, compromising safety.

Innovation Solution

A controller that executes a first operation for cruise control based on positional relationship information and a second operation to automatically stop the vehicle upon a specified rider input, ensuring deceleration aligns with the rider's intention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If cruise control is applied to the lean vehicle based on positional relationship information, then the inter-vehicular distance can be secured safely, but the speed of the lean vehicle may be excessively reduced causing the posture to become unstable

Engineering Contradiction:
ImprovesafetyVSAvoidposture stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The control device changes the control parameters of the lean vehicle based on the operational state. When the operational state indicates a risk of excessive speed reduction, the control device adjusts the cruise control parameters to maintain a speed that ensures posture stability while still securing safe inter-vehicular distance.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The control device continuously monitors the operational state of the lean vehicle and uses this feedback to adjust the cruise control. When the feedback indicates that the vehicle posture is becoming unstable due to excessive speed reduction, the control device modifies the speed control to prevent instability while maintaining safety.

Inventive Principle:
Principle #23Feedback

2Reliability

If the lean vehicle is stopped during cruise control based on positional relationship information, then the vehicle can halt safely, but unintended deceleration may cause the lean vehicle to fall over

Engineering Contradiction:
ImprovesafetyVSAvoidfalling over
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The control device changes the deceleration parameters based on the operational state. When the operational state indicates a high risk of falling over during deceleration, the control device adjusts the stopping parameters to reduce deceleration rate, thereby preventing the lean vehicle from falling over while still enabling safe halting when necessary.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The control device prepares compensatory measures in advance by monitoring the operational state. When the operational state suggests a risk of unintended deceleration causing the vehicle to fall, the control device pre-adjusts the deceleration profile to cushion against this harmful effect, ensuring safe stopping without falling over.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12539931B2Controller and control method
Publication Date: 2026.02.03 ROBERT BOSCH GMBH
  • US12539931B2 patent drawing
  • US12539931B2 patent drawing
  • US12539931B2 patent drawing

AI summary

The present invention obtains a controller and a control method capable of improving safety of a lean vehicle.According to a controller (30) and a control method of the present invention, an execution section of the controller (30) executes a first operation. The first operation is an operation causing the lean vehicle (1) to execute a cruise control based on a positional relationship information that is information about a positional relationship between the lean vehicle (1) and a preceding vehicle preceding the lean vehicle (1). When a specified operation is performed by a rider of the lean vehicle (1) while the first operation is enabled by the rider, the execution section executes a second operation, the second operation is an operation that automatically stops the lean vehicle (1) regardless of the positional relationship information.