Vehicle Trajectory Controller for Adaptive Lane Positioning
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Solution Overview
Problem
Automated steering systems in vehicles do not adequately account for driver preferences, changing topography, and obstacles when calculating the optimal trajectory, leading to situations where the vehicle may obstruct oncoming traffic or fail to adjust to road conditions such as narrowing lanes or obstacles.
Innovation Solution
A controller that receives user input to update the vehicle's trajectory by comparing first and second trajectory data, using an electronic processor unit to determine third trajectory data and output control signals for steering adjustments, allowing the system to learn and store user preferences for future similar environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automated steering system strictly follows the calculated first trajectory to maintain lane center positioning, then lane adherence is improved, but the system cannot adapt to driver preferences, obstacles, or changing road conditions
Solution Approach 1:
The system dynamically switches between automated trajectory control and user-adjusted trajectory control based on detected obstacles or driver input. The electronic processor unit compares the first trajectory with a second trajectory derived from user steering input, and can output control signals following either trajectory depending on the situation, making the system adaptable rather than rigid.
Solution Approach 2:
The system incorporates feedback from multiple sources including obstacle detection sensors and user steering input. When an obstacle is detected or the driver applies steering input, the system receives this feedback and adjusts the trajectory accordingly by comparing it with the original first trajectory and selecting the appropriate path forward.
2Measurement precision
If the automated steering system resists user steering input to maintain the calculated trajectory, then trajectory accuracy is improved, but the driver cannot adjust for preferences or obstacles
Solution Approach 1:
The system preemptively detects obstacles and potential trajectory conflicts before the driver needs to intervene. By using sensor data to identify obstacles ahead, the system prepares alternative trajectories in advance, reducing the need for reactive driver correction and smoothing the transition between automated and manual control.
Solution Approach 2:
The electronic processor unit continuously calculates and compares multiple trajectories in advance based on predicted road conditions and obstacles. This preliminary computation of alternative paths allows the system to quickly switch to an appropriate trajectory when the driver provides input or when obstacles are detected, without requiring real-time recalculation during active steering correction.
3Adaptability or versatility
If the system continuously monitors and compares trajectory data to accommodate user input, then adaptability is improved, but computational complexity and processing requirements increase
Solution Approach 1:
The system extracts only the essential comparison between the first trajectory (automated calculation) and the second trajectory (user-adjusted path). Rather than analyzing all possible trajectory variations, the electronic processor unit focuses on comparing these two specific trajectories and selecting the appropriate one, simplifying the computational burden while maintaining adaptability.
Solution Approach 2:
The electronic processor unit serves multiple functions: it calculates the first trajectory, detects obstacles, processes user steering input to generate the second trajectory, compares both trajectories, and outputs control signals. This multi-functionality consolidates what could be separate complex subsystems into a single integrated unit, reducing overall system complexity.
Data Source
AI summary
A controller can include an electronic processor unit configured to control the driving direction of a vehicle within a lane based on a first trajectory. The controller can be operable to receive a user input for directing the vehicle along a second trajectory that is different from the first trajectory, determine third trajectory data by at least comparing data associated with the first trajectory to data associated with the second trajectory, and output a control signal for controlling, using the electronic processor unit, the driving direction of the vehicle. The control signal can be based at least on the third trajectory data.