Automated Vehicle Speed Control Across Consecutive Turns
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Solution Overview
Problem
Conventional automated driver assistance systems exhibit overly dynamic acceleration characteristics when navigating a series of closely spaced turns, leading to increased energy consumption, decreased fuel efficiency, and reduced driver confidence.
Innovation Solution
A method for automated longitudinal guidance of a motor vehicle that detects the presence of two consecutive turns in an upcoming route section and maintains a constant target speed between them, thereby avoiding unnecessary acceleration and braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional proactive control regulation technology is used for turns, then the vehicle can pass through individual turns, but the acceleration characteristics become overly dynamic and unreliable on route sections with several closely spaced turns
Solution Approach 1:
The patent merges multiple consecutive turns into a single aggregated turn event for control purposes. By detecting a sequence of turns within a predefined time window and treating them as one unified maneuver, the system avoids applying individual acceleration-braking cycles for each turn, thereby stabilizing acceleration characteristics and improving reliability on complex route sections.
Solution Approach 2:
The system performs preliminary detection and aggregation of consecutive turns before executing the driving maneuver. By identifying the sequence of turns in advance and pre-calculating the appropriate speed profile for the aggregated event, the system prevents overly dynamic acceleration characteristics from developing, ensuring smoother and more reliable automated driving.
2Productivity
If the vehicle accelerates after passing through each turn as per conventional dynamics, then the vehicle maintains momentum, but energy consumption increases due to unnecessary acceleration and braking cycles
Solution Approach 1:
By combining multiple consecutive turns into a single aggregated maneuver, the system eliminates redundant acceleration and braking cycles that would occur if each turn were handled independently. This merging approach maintains vehicle momentum more efficiently and reduces energy consumption by avoiding unnecessary propulsion and deceleration events.
Solution Approach 2:
The patent ensures continuous useful action by maintaining a consistent speed profile through aggregated turns without interrupting momentum with unnecessary braking and re-acceleration. The vehicle continues moving through the sequence of turns with minimal energy loss, preserving momentum while reducing overall energy consumption.
3Adaptability or versatility
If conventional turn control is applied to each turn individually, then each turn is navigated separately, but driver confidence decreases due to perceived inability to master closely spaced turns
Solution Approach 1:
The system merges closely spaced turns into a single aggregated maneuver, presenting a unified and coherent control strategy to the driver. This approach demonstrates the system's ability to handle complex sequences of turns as one integrated task, thereby increasing driver confidence while maintaining adaptability to various turn configurations through the aggregation logic.
Solution Approach 2:
By preliminarily detecting and aggregating consecutive turns before execution, the system prepares a comprehensive control strategy that accounts for the entire sequence of turns. This preliminary action allows the system to master closely spaced turns as a coordinated maneuver, enhancing driver confidence through demonstrated competence while preserving adaptability to different route profiles.
Data Source
AI summary
A method for the automated longitudinal guidance of a motor vehicle includes detecting whether there are two turns in a section lying ahead on a route. If so, the speed of the motor vehicle is maintained at a constant target speed value after having passed through a first of the two turns until reaching a second of the two turns.