Vehicle Position Offset for Accurate Gearshift Control
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Solution Overview
Problem
Existing methods for determining the position of a motor vehicle for control purposes often rely on the location device's position, which can lead to inaccurate gearshift timing due to the distance between the device and the vehicle's center of gravity, especially in long vehicles.
Innovation Solution
A method that determines a first position relative to the location device's installation point and offsets it to derive a second position corresponding to the vehicle's center of gravity, using satellite-supported means and calculating the distance based on variations in driving resistance and carriageway parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the position is determined based on the location device installation point, then the position determination is simple, but the gearshift timing becomes inaccurate for long vehicles
Solution Approach 1:
The patent introduces an intermediary calculation step that computes the offset between the location device installation point and the vehicle's center of gravity. This offset serves as a mediator to transform the location device position into an accurate center of gravity position, thereby resolving the contradiction between simple position determination and accurate gearshift timing.
Solution Approach 2:
The patent changes the reference parameter from the location device installation point to the vehicle center of gravity by applying an offset correction. This parameter transformation allows the system to maintain simple position determination while achieving accurate gearshift timing based on the center of gravity position.
2Ease of manufacture
If the location device is installed away from the center of gravity to simplify installation, then installation ease improves, but position accuracy for control purposes deteriorates
Solution Approach 1:
The offset value acts as an intermediary that compensates for the distance between the location device installation point and the center of gravity. This allows the location device to be installed at convenient locations while maintaining accurate center of gravity position determination through mathematical correction.
Solution Approach 2:
The patent segments the position determination into two independent components: the location device position (which can be installed anywhere) and the offset correction (which accounts for the distance to center of gravity). This segmentation allows flexible installation while preserving measurement accuracy.
3Productivity
If anticipatory gearshift control is implemented, then driving efficiency improves, but gearshift timing errors occur due to position offset
Solution Approach 1:
The patent replaces the mechanical assumption that location device position equals vehicle position with a computational approach. By using offset-based calculations, the system accurately determines center of gravity position, enabling precise anticipatory gearshift control without timing errors.
Data Source
AI summary
Disclosed is a method for determining a position of a motor vehicle by means of a location device of the motor vehicle. First, a first position (x1) related to an installation point of the location device in the motor vehicle is determined. In order to determine a position suitable for controlling the motor vehicle, with reference to the said first position (x1) a second position (x2) related to a center of gravity of the vehicle is determined, in that the first position (x1) is offset by a distance (a) between the said installation point of the location device and the center of gravity of the vehicle.