Vehicle Traveling Control Apparatus Stabilizing Follow-Up
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Solution Overview
Problem
When following a smaller vehicle, the own vehicle tends to wobble more due to factors like weight and gravity center, leading to driver anxiety and potential safety issues, as existing follow-up traveling systems are less effective in stabilizing the vehicle.
Innovation Solution
A vehicle traveling control apparatus that sets a control target point ahead of the own vehicle in the vehicle width direction and adjusts the control amount based on shape data of the preceding vehicle, using a first and second gain to stabilize the own vehicle's follow-up behavior, particularly by adjusting steering angles and forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the own vehicle follows the center position of a smaller preceding vehicle, then the follow-up traveling control can track the preceding vehicle's position, but the own vehicle experiences high-frequency high-amplitude wobbling due to the smaller vehicle's instability
Solution Approach 1:
The patent introduces an intermediary processing mechanism (the adjusting unit with gain adjustment) between the detection of the preceding vehicle's position and the control of the own vehicle. This intermediary filters and adjusts the control signals based on the size category of the preceding vehicle, thereby mediating the transmission of position information while suppressing harmful high-frequency components that cause wobbling.
Solution Approach 2:
The patent changes the control parameters (gain values) based on the size category of the preceding vehicle. When a small vehicle is detected, the system adjusts the gain to reduce the amplification of high-frequency position variations, thereby adapting the control system's responsiveness to match the stability characteristics of the targeted vehicle type.
2Device complexity
If the follow-up traveling system uses a fixed control gain, then the control system remains simple, but it cannot effectively suppress wobbling when following smaller vehicles
Solution Approach 1:
The patent makes the control system dynamic by allowing the gain parameter to change based on the detected vehicle size. Instead of a fixed gain, the system dynamically selects or adjusts the gain value according to the category of the preceding vehicle, enabling the control characteristics to adapt to different operating conditions.
Solution Approach 2:
The control system performs self-adjustment by automatically categorizing the preceding vehicle based on its detected dimensions and selecting the appropriate gain value without requiring external intervention. The system serves itself by using its own detection capabilities to configure its control parameters.
Data Source
AI summary
A vehicle traveling control apparatus includes a setting unit and a adjusting unit. The setting unit sets a set position of a preceding vehicle ahead of an own vehicle in a vehicle width direction as a control target point of follow-up traveling allowing for traveling while following the preceding vehicle. The control amount adjusting unit adjusts, on a basis of a first control adjustment value that is based on shape data of the preceding vehicle, a control amount that controls the own vehicle to the control target point.