Adaptive Cruise Control Speed Adjustment for Vehicle Cornering
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Solution Overview
Problem
Existing vehicles with cruise control functionality do not provide optimal speed adjustments during cornering maneuvers, potentially compromising safety and comfort.
Innovation Solution
A method and system that utilize sensor data, including steering angle and rate, to adjust the vehicle's speed during cruise control by decreasing and then increasing speed based on specific conditions, ensuring optimal control during cornering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cruise control maintains a preset speed during cornering, then the vehicle can complete the cornering maneuver, but safety and comfort are compromised due to suboptimal speed
Solution Approach 1:
The cruise control system dynamically adjusts the vehicle speed during cornering maneuvers based on real-time sensor data. The processor continuously monitors steering angle, steering rate, and vehicle speed, and automatically modifies the preset speed by decreasing it during cornering intervals and increasing it back after cornering, making the speed adaptive rather than static to maintain safety and comfort
Solution Approach 2:
The system uses feedback from sensors that detect steering angle and steering rate to determine when the vehicle is entering or exiting a cornering maneuver. This feedback loop allows the processor to automatically adjust the cruise control speed setting in response to the vehicle's actual driving conditions, ensuring optimal speed maintenance for safety
2Ease of operation
If cruise control maintains a preset speed during cornering, then the system remains simple, but comfort is compromised due to excessive lateral acceleration
Solution Approach 1:
The system dynamically modifies the cruise control speed during cornering to optimize comfort. By detecting cornering maneuvers through steering sensors and automatically adjusting speed downward during these intervals, the system reduces lateral acceleration and improves passenger comfort without requiring manual driver intervention
Solution Approach 2:
The cruise control system automatically adjusts itself during cornering maneuvers without driver input. The processor monitors steering conditions and autonomously decreases or increases the speed setting, allowing the system to self-optimize for comfort while maintaining the cruise control functionality
3Reliability
If the system adjusts speed during cornering by decreasing and then increasing speed, then safety and comfort are improved, but the control system complexity increases
Solution Approach 1:
The existing cruise control system is enhanced with multi-functionality by integrating cornering detection and automatic speed adjustment capabilities. The processor leverages existing steering sensors and adds logic to detect cornering maneuvers and modify speed accordingly, making the single system perform both traditional cruise control and adaptive cornering assistance functions
4Manufacturing precision
If the system uses sensor data including steering angle and rate to adjust speed, then optimal cornering control is achieved, but the measurement and detection requirements increase
Solution Approach 1:
The system utilizes existing steering sensors already present in the vehicle to detect steering angle and steering rate. By leveraging these existing measurement capabilities, the system achieves precise speed adjustment during cornering without requiring additional specialized sensors, thus maintaining manufacturing precision while avoiding increased detection complexity
Data Source
AI summary
In an embodiment, a method is provided that includes obtaining sensor data via one or more sensors of a vehicle; and adjusting a speed of the vehicle during cruise control, via instructions provided by a processor of the vehicle, as the vehicle performs a cornering maneuver, the adjusting including decreasing the speed of the vehicle so as to be less than a manually inputted speed for the cruise control, during one or more first intervals of the cornering maneuver, based on the sensor data and in accordance with the instructions provided by the processor; and increasing the speed of the vehicle so as to return to the manually inputted speed for the cruise control, during one or more second intervals of the cornering maneuver that are subsequent to the one or more first intervals, based on the sensor data and in accordance with the instructions provided by the processor.