Dynamic Vehicle Motion Profile Adjustment for Erratic Traffic
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Solution Overview
Problem
Advanced driver-assistance systems (ADAS) in vehicles face challenges in maintaining smooth vehicle dynamics when encountering erratic behaviors from nearby vehicles, leading to abrupt reactions that affect customer comfort and satisfaction.
Innovation Solution
A system that uses sensors to detect distances and accelerations between vehicles, calculates offset distances, and generates control signals to adjust vehicle velocity and steering, maintaining a selected offset distance to anticipate and respond to erratic behaviors of target vehicles, thereby enhancing safety and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the host vehicle maintains a fixed offset distance from the target vehicle, then the control system is simple to operate, but the vehicle produces abrupt reactions when the target vehicle behaves erratically, affecting customer comfort and satisfaction
Solution Approach 1:
The system dynamically adjusts the offset distance between the host vehicle and target vehicle based on real-time acceleration measurements. When the target vehicle exhibits erratic behavior (high acceleration), the system automatically increases the offset distance, transforming the static control approach into a dynamic one that adapts to changing conditions, thereby reducing abrupt reactions while maintaining ease of operation
Solution Approach 2:
The system changes the offset distance parameter in response to detected acceleration patterns of the target vehicle. By monitoring acceleration thresholds and adjusting the spatial parameter dynamically, the system eliminates abrupt reactions without requiring complex manual control, resolving the contradiction between operational simplicity and ride comfort
2Object-affected harmful factors
If the host vehicle maintains a larger offset distance from erratic vehicles, then customer comfort is improved, but the device complexity increases due to multiple sensors and processors required for detection and calculation
Solution Approach 1:
The system uses a multi-functional integrated approach where sensors serve multiple purposes (detecting both distance and acceleration), and the processor handles various calculations (offset distance, acceleration, threshold comparisons) within a single control unit. This universal design achieves enhanced customer comfort through dynamic offset adjustment without proportionally increasing device complexity
Solution Approach 2:
The system automatically detects erratic vehicle behavior and self-adjusts the offset distance without requiring complex external intervention or manual control. The integrated sensors and processors work autonomously to monitor target vehicle acceleration and dynamically modify host vehicle positioning, achieving comfort improvement with minimal additional system complexity
3Object-affected harmful factors
If the system dynamically adjusts offset distance based on target vehicle acceleration, then smooth vehicle dynamics are achieved, but the loss of time increases due to continuous detection and calculation operations
Solution Approach 1:
The system performs detection and calculation operations at periodic intervals rather than continuously, measuring target vehicle acceleration at discrete time points and adjusting offset distance based on these periodic measurements. This approach maintains smooth vehicle dynamics while reducing computational overhead and time loss compared to continuous operation
Solution Approach 2:
The system applies partial action by only performing dynamic adjustment operations when threshold conditions are met (when target vehicle acceleration exceeds predefined limits). Rather than continuously adjusting the offset distance, the system intervenes selectively based on detected erratic behavior, achieving smooth dynamics during critical moments while minimizing time loss during normal driving conditions
Data Source
AI summary
An apparatus including a sensor for detecting a first acceleration of a target vehicle at a first time and a second acceleration of the target vehicle at a second time, a processor operative to calculate an increased distance in response to the first acceleration and the second acceleration exceeding an acceleration threshold, the processor further operative to generate a control signal indicative of the increased distance, and a vehicle controller for controlling a vehicle throttle controller and a vehicle steering controller to maintain an initial distance between the host vehicle and the target vehicle and to maintain the increased distance between the host vehicle and the target vehicle in response to the control signal.