Vehicle Speed Control Ending Deceleration to Prevent Position Deviation
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Solution Overview
Problem
Existing driving support systems face challenges in accurately controlling vehicle speed and position, leading to position deviations and uncomfortable feelings for drivers, especially when stopping, due to GPS detection errors and difficulties in managing both position and speed simultaneously.
Innovation Solution
A driving support apparatus that stores travel data during driver operations, using a storage unit, position acquisition unit, and traveling control unit to perform control based on vehicle speed and position, ending traveling control before reaching a low threshold speed to prevent position deviation recognition by the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If GPS-based position detection is used for traveling control, then the system can automatically control vehicle speed and position, but detection errors cause position deviations that drivers can recognize and feel uncomfortable
Solution Approach 1:
The system performs traveling control only partially - it controls speed and position automatically when the vehicle is moving at normal speeds, but deliberately stops the automatic control before the vehicle reaches very low speeds or stops completely. This partial application of automatic control avoids the region where GPS errors become visually noticeable to drivers, thus resolving the contradiction between automation and precision.
2Extent of automation
If the system controls vehicle speed to match stored target speeds at detected positions, then automated driving support is provided, but position deviations occur due to GPS errors and difficulty in simultaneously controlling both position and speed
Solution Approach 1:
The system applies automatic speed and position control only within a certain speed range, deliberately excluding the low-speed region where position accuracy becomes critical. By ending control before the vehicle reaches very low speeds or stops, the system avoids the regime where small position deviations are most apparent, thus achieving acceptable overall performance without requiring extremely precise simultaneous control of both position and speed.
Data Source
Figure 1
Figure 2(a)~2(b)
Figure 3(a)~3(b)
AI summary
A driving support apparatus 1 performs a driving support based on travel data obtained while a driver causes a vehicle to travel by a driving operation. The apparatus includes storage units 20 and 41 that store a vehicle speed at each position on a traveling route using the vehicle speed acquired when the driver causes the vehicle to travel by performing an acceleration or deceleration operation, and traveling control units 30, 31, and 43 that perform a traveling control based on the vehicle speed at each position stored in the storage units 20 and 41 and the current position of the vehicle. The traveling control units 30, 31, and 43 end the traveling control in a case where the vehicle speed of the vehicle becomes lower than a threshold value during the deceleration by the traveling control.