Steering Angle Center Prediction From Vehicle Load Position

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Solution Overview

Problem

Existing devices for estimating the steering angle center of autonomous vehicles take a significant amount of time to converge, as they rely on accumulating and processing sensor data during travel to calculate the steering angle center.

Innovation Solution

An information processing method that uses past transported-object information and the weight of the moving body to generate a predicted steering angle center value through a model, allowing the vehicle to set the steering angle center quickly without relying on real-time sensor data accumulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If steering angle center is estimated by accumulating sensor data during travel, then measurement precision is improved, but time required for estimation increases

Engineering Contradiction:

Improvesteering angle center estimation accuracyVSAvoidtime to converge steering angle center

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary estimation of the steering angle center using transport object information (weight and position) before actual travel begins. This allows the steering angle center to be set in advance, eliminating the need to wait for sensor data accumulation during travel and significantly reducing the convergence time while maintaining estimation accuracy.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system introduces transport object information (weight and position of cargo/passengers) as an intermediary parameter to estimate the steering angle center. This intermediary data allows indirect calculation of the center of gravity position, which directly determines the steering angle center, bypassing the need for extensive sensor data accumulation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If multiple sensors are used for steering angle detection, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improvesteering angle detection accuracyVSAvoidnumber of sensors and processing systems

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system extracts and utilizes transport object information (weight and position data) that is already available in the vehicle's information system. By leveraging this existing data source, the system avoids the need for additional dedicated sensors for steering angle estimation, thereby reducing device complexity while maintaining measurement precision.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS11891046B2Information processing method, information processing system, and control device

Publication Date: 2024.02.06 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

An information processing method is executed by a computer and the method includes: obtaining first transported-object information that is transported-object information including a position and a weight of a transported object on a moving body; obtaining a weight of the moving body; generating information indicating a predicted steering angle center value by inputting the first transported-object information obtained and the weight of the moving body obtained into a model generated using second transported-object information, a weight of the moving body, and a steering angle center value of the moving body, the second transported-object information being older transported-object information than the first transported-object information; and outputting the information indicating the predicted steering angle center value to the moving body.