Bidirectional Encoder for Vehicle Differential Control
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Solution Overview
Problem
Existing systems for controlling differential locking in vehicles are cumbersome, particularly with multiple differentials, leading to driver confusion and increased risk of incorrect configuration selection due to reliance on physical positions of control members and the need for visual verification, limiting adaptability across different vehicle setups.
Innovation Solution
A differential control system featuring a manually operable control member that freely rotates bidirectionally, decoupling its angular position from locking configurations, with an encoder converting rotation into signals for the controller to manage differential locks, allowing for multiple configurations without predefined positions and enabling automatic mode adjustments based on vehicle and road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manually operable switch button is used to control differential locking configurations, then the human interface is simplified and easier to use, but the physical position of the switch button is irremediably associated with a locking configuration, increasing the risk of confusion and incorrect selection when multiple configurations are available
Solution Approach 1:
The patent replaces the traditional mechanical switch button with an encoder-based control member. The encoder converts rotational movement into electrical signals, allowing the control system to determine the selected configuration based on the number of rotations or signal patterns rather than fixed angular positions. This substitution eliminates the inherent limitation of mechanical switches where position is permanently tied to function, enabling more configurations to be controlled through software-defined signal sequences, thereby reducing driver confusion and selection errors.
2Adaptability or versatility
If multiple push buttons are provided on the dashboard to control each differential, then each differential can be independently controlled, but the dashboard becomes cluttered with many buttons, increasing the time required to select locking configurations and the risk of driver error
Solution Approach 1:
The patent implements a universal control member (encoder) that can control multiple differentials through a single interface. Instead of requiring separate buttons for each differential, the encoder generates signals that the control system interprets to activate specific differential locking configurations. This multi-functional approach allows one control element to manage numerous differentials by varying the rotation pattern, number of turns, or signal sequences, dramatically reducing the number of physical controls needed while maintaining full independent control capability.
3Device complexity
If a switch button is dedicated to one axle and differential set-up, then the control system is simple, but it cannot be easily modified or adapted to vehicles with different axle set-ups
Solution Approach 1:
The patent introduces dynamic adaptability through the encoder control system. The encoder itself remains a simple mechanical component, but its associated control system dynamically adapts to different vehicle configurations through software programming. The control unit can be configured via software to recognize different axle and differential arrangements, allowing the same physical encoder to control various vehicle setups without hardware modification. This dynamic software-based adaptation maintains control system simplicity while achieving high versatility across different vehicle models and configurations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system simplifies and streamlines differential control, reducing driver error and increasing adaptability across different vehicle setups, as the control member's position is independent of locking configurations, allowing for safer and more intuitive operation without visual verification, and enabling automatic mode adjustments for enhanced safety and convenience.
Implementation Method 1
an encoder connected to the control member to convert a rotation of the control member into a signal fed to the controller
Data Source
Figure 1
Figure 2-a~2-b
Figure 3-a~3-d
AI summary
The invention relates to a differential control system for a motor vehicle in particular for a truck comprising at least one differential (6, 7, 8, 9). The differential control system (1) comprises at least one differential lock which is able to operate the differential (6, 7, 8, 9) into at least a locked or an unlocked state, a controller (17) that controls the differential lock, a manually operable control member (14) freely rotating bidirectionally around at least one axis (X- X'), an encoder (16) connected to the control member (14) to convert a rotation of the control member (14) into a signal fed to the controller (17) which controls the differential lock in order to operate the differential (6, 7, 8, 9) into a locked or an unlocked state.