Vehicle Control System Adaptive Shift Range Operation
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Solution Overview
Problem
Existing vehicle control systems fail to provide intuitive acceleration/deceleration operations when the vehicle's travel direction does not match the direction of the operation element, leading to deteriorated operability.
Innovation Solution
A vehicle control system that includes an operation element movable in two directions, a travel control unit to accelerate or decelerate the vehicle based on the operation direction, and a shift range control unit to adjust the vehicle's travel range, ensuring the travel direction matches the operation direction, allowing intuitive acceleration/deceleration operations in both forward and reverse directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the vehicle control system uses a single operation element for both forward and reverse operations, then the device complexity is reduced, but the operability deteriorates when the travel direction does not match the operation direction
Solution Approach 1:
The patent applies dynamics by making the functional mapping between operation element and vehicle motion adaptive rather than fixed. The travel control unit dynamically changes the relationship between operation element movement direction and vehicle acceleration/deceleration based on the current shift range. When in first travel range, forward movement of the operation element accelerates the vehicle; when in second travel range, forward movement decelerates the vehicle. This dynamic reconfiguration resolves the contradiction by maintaining intuitive operability while using a single operation element.
Solution Approach 2:
The patent changes the operational parameters of the operation element based on the shift range state. The same physical operation element is reinterpreted to have different functional meanings depending on the vehicle's travel range state. By changing the parameter mapping (operation direction to acceleration/deceleration response) based on the shift range, the system maintains ease of operation while reducing device complexity.
2Device complexity
If the operation element responds consistently in one direction for acceleration, then the control logic is simplified, but the adaptability to different travel directions is reduced
Solution Approach 1:
The control logic is made dynamic by continuously monitoring the shift range state and adjusting the response mapping accordingly. The travel control unit implements conditional logic that adapts the operation element's function based on whether the vehicle is in first or second travel range. This dynamic adaptation maintains relatively simple control logic while achieving high adaptability to different travel directions.
Solution Approach 2:
The operation element is designed with multi-functionality, serving both as an acceleration trigger and a deceleration trigger depending on the shift range state. This universal design allows a single element to perform multiple functions (acceleration in one direction, deceleration in the same physical direction when in reverse range), reducing device complexity while maintaining adaptability through the shift range control unit.
Data Source
AI summary
A vehicle control system includes: an operation element; a travel control unit configured to accelerate or decelerate a vehicle; and a shift range control unit configured to control a shift range of the vehicle. In a state where the shift range of the vehicle is set to a first travel range, the travel control unit accelerates the vehicle according to a moving operation on the operation element in a first travel direction and decelerates the vehicle according to the moving operation on the operation element in a second travel direction. In a state where the shift range of the vehicle is set to a second travel range, the travel control unit accelerates the vehicle according to the moving operation on the operation element in the second travel direction and decelerates the vehicle according to the moving operation on the operation element in the first travel direction.