Vehicle Steering Control Device for Route Accuracy
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Solution Overview
Problem
Conventional steering assistance and automatic steering techniques fail to account for delays caused by mechanical mechanisms or friction, leading to deviations from intended travel routes.
Innovation Solution
A vehicle control device that includes a steering controller, a controller, a generator, a speed acquirer, and a steering acquirer, which instructs the steering system to adjust the steering angle based on the vehicle's speed, delay time, and steering state to maintain route accuracy, using look-ahead steering angles and feedback corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional steering assistance or automatic steering techniques are used, then the steering control system is simple, but the vehicle deviates from the travel route due to steering delay
Solution Approach 1:
The controller calculates a look-ahead steering angle that anticipates future steering requirements based on predicted vehicle position and delay characteristics. This preliminary action compensates for the inherent steering delay by proactively adjusting the steering angle before the delay causes route deviation, thereby improving traveling accuracy without requiring complex hardware modifications
2Manufacturing precision
If the steering angle is adjusted in real-time to compensate for delay, then the traveling accuracy improves, but the control response time increases
Solution Approach 1:
The system performs preliminary calculations of the look-ahead steering angle using predicted vehicle position and pre-determined delay characteristics. By preparing the compensated steering angle in advance based on current state predictions, the system reduces actual response time when steering correction is needed, resolving the contradiction between accuracy improvement and response time loss
3Productivity
If the vehicle speed increases, then the productivity improves, but the steering delay effect becomes more significant
Solution Approach 1:
The controller dynamically adjusts the look-ahead distance and delay compensation parameters based on real-time vehicle speed. At higher speeds, the system increases the look-ahead distance and adjusts delay characteristics to account for the more significant delay effect, thereby maintaining steering accuracy across varying speeds and resolving the contradiction between productivity and precision
Data Source
AI summary
A vehicle control device according to an embodiment includes: a steering controller configured to control steering of a vehicle; and a controller configured to, when the vehicle is located at a first position on a travel route, instruct the steering controller to control the vehicle at a steering angle corresponding to a second position that is an advanced position from the first position in a traveling direction on the travel route.