Autonomous Parking Wheel Control on Slopes and Curbs
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Solution Overview
Problem
Autonomous vehicles face challenges in safely handling braking system failures and efficiently parking under varying road conditions, which can lead to safety hazards and traffic congestion.
Innovation Solution
Implementing a robust braking system with redundant braking systems and a graduated approach to failure handling, combined with methods for determining road slope and curb status to facilitate safe autonomous parking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a primary braking system is used in autonomous vehicles, then braking function is provided, but safety is compromised when the system fails
Solution Approach 1:
The patent implements a redundant backup braking system that is pre-configured and ready to activate when the primary braking system fails. This beforehand cushioning approach ensures that safety is maintained by having a predetermined fallback mechanism in place before any failure occurs, allowing the autonomous vehicle to continue operating safely even when the primary system malfunctions.
2Reliability
If conventional backup braking systems are implemented, then some braking coverage is provided, but complete braking control is lost
Solution Approach 1:
The backup braking system is designed to perform all braking functions that the primary system provides, not just partial backup. The secondary braking system can independently execute full stopping, emergency braking, and controlled deceleration maneuvers, making it a universal replacement that maintains complete braking control capability even when the primary system fails.
3Productivity
If vehicles park quickly to maintain traffic flow, then productivity is improved, but safety and compliance risks increase
Solution Approach 1:
The autonomous parking system performs preliminary assessments of the parking environment, including detecting curb presence, evaluating road slope, and identifying safe parking locations before executing the parking maneuver. This preliminary action ensures that the vehicle only parks in safe, compliant locations while maintaining efficient parking operations through automated decision-making.
Solution Approach 2:
The parking system continuously monitors parking conditions and vehicle status throughout the parking process, using sensor feedback to adjust the parking maneuver in real-time. This feedback mechanism allows the system to respond to changing conditions and ensure safe, compliant parking while maintaining operational efficiency.
4Ease of operation
If autonomous parking is implemented without road condition assessment, then ease of operation is improved, but safety hazards increase
Solution Approach 1:
The autonomous parking system performs preliminary assessments of the parking environment, including detecting curb presence, evaluating road slope, and identifying safe parking locations before executing the parking maneuver. This preliminary action ensures that the vehicle only parks in safe, compliant locations while maintaining efficient parking operations through automated decision-making.
Data Source
AI summary
Embodiments herein relate to robust methodologies for autonomous parking. In one or more embodiments, an autonomous vehicle may determine the slope of a road based upon one or more inputs and a pre-defined slope definition and may also determine curb/no curb status of a parking location. Given the determined road conditions, such as slope and no curb/curb, embodiments determine wheel direction and angle that the vehicle should achieve to properly park. Embodiments also include countermeasures if one or more issues prohibit the vehicle from achieving a desired parking condition.