Automatic Parking Shift Control for Consistent Forward Positioning
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Solution Overview
Problem
Existing vehicle control devices cause a sense of incongruity during automatic parking by allowing switching to speed-reduction positions that do not match the user's intention, leading to inconsistent vehicle operation.
Innovation Solution
A vehicle control device that restricts shift position switching to only the first and second forward positions, with an automatic-parking control unit that switches to the first forward position during automatic parking, and provides driver notifications for cancellation or resumption of automatic parking control when switching to the second forward position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shift position is switched to a speed-reduction position (second forward position) during automatic parking control, then the vehicle can provide enhanced braking effect or sport mode, but it causes a sense of incongruity and inconsistency in vehicle operation that does not match the user's intention
Solution Approach 1:
The system performs preliminary validation of shift position requests before executing them during automatic parking control. The control unit checks whether the requested shift position is appropriate for the current automatic parking context, and only permits switching to positions that are consistent with automatic parking operation, thereby preventing incongruous operations before they occur.
Solution Approach 2:
The automatic parking control unit acts as an intermediary between the driver's shift position request and the transmission control system. It mediates the conflict by filtering and validating shift position commands, allowing only those that are appropriate for automatic parking execution, thus ensuring operational consistency while still responding to driver inputs.
2Reliability
If the shift position is restricted to only first and second forward positions during automatic parking, then operation consistency is improved, but the adaptability to driver intentions and different driving conditions is reduced
Solution Approach 1:
The system dynamically adjusts the set of permissible shift positions based on the current automatic parking execution context. During automatic parking control, only certain shift positions (first and second forward positions) are permitted to ensure consistency. However, the system remains adaptable by allowing transitions to other positions under specific conditions, such as when the automatic parking control is deactivated or when safety conditions are met, thus balancing consistency and adaptability.
3Reliability
If the automatic parking control switches the shift position to the first forward position during forward movement, then the vehicle operation becomes consistent with user intention, but the driver's ability to select different speed reduction ratios is limited
Solution Approach 1:
The control unit continuously monitors the execution status of automatic parking control and the current shift position, and provides feedback by automatically adjusting the shift position to the first forward position when forward movement is detected during automatic parking. This feedback mechanism ensures that the vehicle operation remains consistent with the user's intention for automatic parking, while still allowing the driver to override or deactivate the automatic parking control to regain full control flexibility.
Data Source
AI summary
A vehicle control device includes: a shift-position-switching acceptance unit that accepts switching operation of the shift position of the transmission but does not accept switching operation from a shift position other than the first forward position and the second forward position to the second forward position without via the first forward position; and an automatic-parking control unit that, in a case of moving the vehicle forward during execution of automatic parking control in a state in which the shift position of the transmission is set at a shift position other than the first forward position and the second forward position, sets the shift position of the transmission to the first forward position to move the vehicle forward.