Vehicle Control Apparatus Interpolation Deceleration
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Solution Overview
Problem
Existing vehicle control systems cause discomfort for drivers when deceleration control is performed on multiple targets in quick succession, leading to perceived interruptions in braking, as they do not account for the short intervals between deceleration control periods.
Innovation Solution
A vehicle control apparatus that calculates the expected end timing and start timing of deceleration support controls for multiple targets and performs interpolation or continues/starts deceleration control within predetermined intervals to maintain a smooth deceleration experience, preventing perceived interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If deceleration control is performed on multiple targets in quick succession, then the system responds promptly to multiple deceleration targets, but the driver perceives interruptions in the deceleration control causing discomfort
Solution Approach 1:
The system performs preliminary actions by continuing the first deceleration control beyond its expected end timing or starting the second deceleration control before its expected start timing. This overlap ensures that deceleration control is maintained without interruption, preventing the driver from perceiving gaps in the control system's response.
Solution Approach 2:
The system ensures continuity of useful action by making the interval between deceleration controls less than a predetermined time threshold. This is achieved by extending the first control or advancing the second control, ensuring that the deceleration action continues without perceptible interruption to the driver, thus maintaining smooth and continuous braking assistance.
2Ease of operation
If the interval between deceleration control end and next deceleration control start is reduced, then driver comfort is improved, but control precision for each target may be compromised
Solution Approach 1:
The system applies preliminary action by adjusting the timing of deceleration controls so that the first control continues beyond its expected end or the second control starts before its expected beginning. This timing adjustment ensures the interval between controls remains below the driver's perception threshold while still allowing each control to achieve its deceleration objective.
Solution Approach 2:
The system changes the timing parameters of the deceleration controls by extending the first control duration or advancing the second control start time. This parameter modification ensures that the interval between controls is optimized for driver comfort (less than predetermined time) while maintaining adequate deceleration effectiveness for each target.
Data Source
AI summary
A vehicle control apparatus is provided with: an acquirer configured to obtain an expected end timing of a first deceleration support control, which is a deceleration support control for a first target, and an expected start timing of a second deceleration support control, which is the deceleration support control for a second target, if there is the first target as a deceleration target ahead of a host vehicle in the traveling direction and if there is the second target as the deceleration target ahead of the first target; and a controller programmed or configured to perform an interpolation deceleration support control of interpolating the first deceleration support control and the second deceleration support control, in a predetermined period including at least a part of an interval between the expected end timing and the predicted start timing, if the interval is less than a first time.