Driver Assistance Control for Target Vehicle Acceleration Matching
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Solution Overview
Problem
Existing driver assistance systems struggle to assist drivers in mimicking the acceleration behavior of a target vehicle, particularly in scenarios where the driver fails to provide sufficient acceleration out of a curve.
Innovation Solution
A method for operating a driver assistance system that converts the driver's input from the gas pedal into a power setpoint value for the vehicle, adjusting it based on the instantaneous vehicle acceleration and the target acceleration of a preceding vehicle, to assist the driver in matching the target vehicle's acceleration behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver input is directly converted to power setpoint value without assistance, then the driver has full control over vehicle acceleration, but the driver cannot effectively imitate the target vehicle's acceleration behavior
Solution Approach 1:
The system continuously monitors the difference between the target vehicle's acceleration and the own vehicle's acceleration, and uses this feedback to automatically adjust the power setpoint value. This closed-loop control enables the driver to imitate the target vehicle's acceleration behavior by providing real-time corrections based on the acceleration difference.
Solution Approach 2:
The driver assistance system acts as an intermediary between the driver's gas pedal input and the vehicle's power delivery. It processes the driver input through an adjustment mechanism that incorporates the target vehicle's acceleration characteristics, thereby mediating between direct driver control and automated imitation behavior.
2Reliability
If the driver assistance system automatically adjusts power setpoint to match target acceleration, then the driver can imitate target vehicle behavior, but the driver loses direct control over acceleration
Solution Approach 1:
The system applies partial automation by adjusting only the portion of power setpoint needed to match target acceleration, rather than completely taking over control. The driver retains control authority through the gas pedal, while the assistance system provides supplementary adjustment to achieve the desired imitation accuracy.
Solution Approach 2:
The system dynamically balances between driver control and automated assistance based on real-time conditions. The power setpoint adjustment is continuously adapted based on the difference between target and actual acceleration, allowing the control strategy to evolve dynamically rather than being fixed.
3Reliability
If the system intervenes in engine management to gain target vehicle acceleration, then acceleration imitation is improved, but the system complexity increases
Solution Approach 1:
The driver assistance system performs multiple functions: it monitors target vehicle acceleration, calculates the difference from own vehicle acceleration, and adjusts the power setpoint value. By consolidating these functions into a single control module, the system achieves acceleration imitation without proportionally increasing overall system complexity.
Data Source
AI summary
A method for operating a driver assistance system of a vehicle in an assistance mode. A driver input instantaneously expressed by a driver of the vehicle by an angular position of a gas pedal of the vehicle is converted into a power setpoint value of the vehicle influencing a vehicle acceleration of the vehicle, as a function of an instantaneous vehicle acceleration value of the vehicle and a target acceleration value of a target vehicle, to assist the driver with imitating a driving behavior of the target vehicle.