Steering Control Device Adjusting Travel Position for Vehicle Weight
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Solution Overview
Problem
The steering control devices for large-sized vehicles do not account for changes in motion performance due to cargo loading status, leading to unstable vehicle behavior.
Innovation Solution
A steering control device that specifies expected travel positions and adjusts them based on vehicle weight and cargo information to ensure safe navigation, particularly by increasing the radius of curvature of curved travel lines when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering control device uses a fixed expected travel position in the traffic lane, then the steering control is simple, but the vehicle behavior becomes unstable when cargo loading status changes
Solution Approach 1:
The patent applies dynamics by making the expected travel position adjustable rather than fixed. The control device dynamically changes the expected travel position based on vehicle weight information, allowing the steering control to adapt to different cargo loading conditions and maintain stable vehicle behavior.
Solution Approach 2:
The patent changes the parameter of expected travel position based on vehicle weight. When cargo is loaded, the system adjusts the expected travel position to account for changed motion performance, ensuring stable vehicle behavior under varying loading conditions.
2Reliability
If the vehicle travels along a curved line with small radius of curvature, then the vehicle can navigate tight turns, but the vehicle cannot travel safely when cargo is loaded
Solution Approach 1:
The patent adjusts the expected travel position parameter to increase the radius of curvature when cargo is loaded. This ensures that the vehicle travels safely by avoiding overly tight turns that would be unsafe under loaded conditions, while still maintaining the ability to navigate curves when unloaded.
Data Source
AI summary
A steering control device 10 is equipped with: a first specification unit 121 for specifying an expected travel position where a vehicle is expected to travel in the traffic lane in which the vehicle is travelling; a second specification unit 122 for specifying information about the weight of the vehicle; an adjustment unit 123 for adjusting the expected travel position in the vehicle-widthwise direction on the basis of the expected travel position of the vehicle and the weight information; and a steering control unit 124 for controlling steering on the basis of the adjusted expected travel position.