Vehicle Travel Control Device Using Brake Jerk Intent Quantification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle travel control devices do not adequately account for the driver's brake operation intent when adjusting longitudinal acceleration, leading to discomfort due to mismatched control instructions.
Innovation Solution
A vehicle travel control device that includes a control instruction value calculation unit, a driver acceleration intent quantification unit to calculate longitudinal jerk from brake operations, and a correction unit to adjust control instructions based on the quantified intent, ensuring alignment with the driver's acceleration and deceleration intentions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the travel control device executes control based on travel control algorithm without considering driver's brake operation intent, then the control system is simple and reliable, but driver discomfort occurs due to mismatch between control instructions and driver intent
Solution Approach 1:
The system performs preliminary quantification of driver's acceleration intent based on brake operation amount and operation time before executing the travel control. By calculating the driver's intent in advance and comparing it with the travel control instruction, the system can proactively adjust the control to match driver expectations, preventing discomfort before it occurs.
Solution Approach 2:
The system introduces feedback by continuously monitoring brake operation amount and operation time, quantifying driver intent, and using this information to adjust the travel control instructions. The control instruction is modified based on the comparison between quantified driver intent and standard travel control requirements, creating a closed-loop system that adapts to driver preferences.
2Ease of operation
If the travel control device quantifies driver acceleration intent and corrects control instructions, then driver comfort is improved, but the device complexity and processing requirements increase
Solution Approach 1:
The system uses brake operation amount and operation time as intermediary variables to indirectly measure driver acceleration intent. Instead of directly measuring the abstract concept of driver intent, the system quantifies it through observable brake operations, which serve as measurable proxies for the driver's underlying acceleration preferences.
Solution Approach 2:
The system changes the parameters used for control by introducing brake operation amount and operation time as new measurement parameters. These parameters are combined to calculate a quantified driver acceleration intent value, which then becomes an additional control parameter alongside traditional travel control requirements.
Data Source
AI summary
A vehicle travel control device includes a control instruction value calculation unit, a driver acceleration intent quantification unit, and a control instruction value correction determination unit that determines whether correction of a control instruction value is required in response to a quantified driver's acceleration intent. The vehicle travel control device also includes a control instruction value correction unit that corrects the control instruction value in response to a correction determination result of the control instruction value correction determination unit. The driver acceleration intent quantification unit quantifies the driver's acceleration intent using an integral value of the longitudinal jerk occurring according to the brake operation of the driver.