Driving Assistance Apparatus Reaction Force Control
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Solution Overview
Problem
Existing driving assistance systems compromise the driver's sense of initiative by forcing necessary driving operations, leading to a deterioration in driving performance.
Innovation Solution
A driving assistance apparatus that recognizes the driver's operation amount and external environment, predicts an appropriate operation amount, and adjusts reaction force characteristics to maintain the driver's initiative by changing the reaction force increase or decrease amounts relative to the operation amount range, ensuring the driver stays within the appropriate range without excessive force requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If operation interference is performed to prompt the necessary driving operation amount for the driver, then the driving operation amount becomes appropriate, but the sense of initiative of the driver in the driving operation deteriorates
Solution Approach 1:
The system changes the reaction force parameter of the operation device based on the driver's operation amount. When the operation amount is within the appropriate range, the reaction force is set to a first value; when outside the range, it changes to a second value. This dynamic parameter adjustment guides the driver toward appropriate operation without forcing interference, thus improving operation accuracy while preserving the driver's sense of initiative.
2Stability of the object's composition
If the reaction force increase amount with respect to the increase of the operation amount in the appropriate operation amount range is made large, then the operation amount of the driver stays in the appropriate range, but the force required for operation increases
Solution Approach 1:
The system applies different reaction force characteristics to different regions of the operation amount. Within the appropriate operation amount range, a first reaction force characteristic is applied; outside this range, a second reaction force characteristic is applied. This localized quality adjustment ensures stability within the target range while avoiding excessive force requirements, as the reaction force only increases when the driver operates outside the appropriate range.
Data Source
AI summary
A driving assistance apparatus predicts an appropriate operation amount which is an operation amount performed by a driver in correspondence with the external environment, and sets the appropriate operation amount range including the appropriate operation amount, an appropriate operation amount range including the appropriate operation amount, and changes the reaction force characteristics of the operation device when it is determined that the operation amount of the driver corresponding to the prediction time point of the appropriate operation amount is not included in the appropriate operation amount range.