Vehicle Touch Control Haptic Feedback Compensation
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Solution Overview
Problem
Haptic feedback in touch-sensitive vehicle operating devices can vary significantly due to mechanical inhomogeneities and positioning, leading to different user experiences at different points on the surface, which affects the quality and consistency of operation.
Innovation Solution
The method involves varying the movements of the driven element based on detected touch points to ensure that the same haptic feedback is perceived locally, by accounting for mechanical inhomogeneities and adjusting the amplitude and frequency of movements relative to the pivot axis and coupling point, ensuring consistent haptic feedback across the touch-sensitive surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operating element is moved by the movement device to generate haptic feedback, then the user receives tactile feedback for input confirmation, but the haptic feedback varies significantly due to mechanical inhomogeneities and positioning at different points on the surface
Solution Approach 1:
The patent applies local quality by determining the specific location of the touch-sensitive surface where the user input occurs and adjusting the movement parameters of the driven element based on that location. This ensures that each region of the surface is compensated for its specific mechanical characteristics, resulting in consistent haptic feedback across the entire surface despite underlying mechanical inhomogeneities.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting the movement parameters (such as amplitude, frequency, or displacement) of the driven element based on the detected touch location. This allows the system to compensate for position-dependent mechanical variations and maintain uniform haptic feedback characteristics across different regions of the touch-sensitive surface.
2Reliability
If the driven element movements are varied depending on detected touch points, then consistent haptic feedback is achieved across different surface locations, but the device complexity increases due to location-dependent control requirements
Solution Approach 1:
The patent employs feedback by using the detection device to identify the location of user input on the touch-sensitive surface and using this information to adjust the movement parameters of the driven element. This closed-loop approach ensures that the haptic feedback is consistently tailored to the specific touch location, compensating for mechanical variations while maintaining a manageable control structure.
Solution Approach 2:
The patent applies preliminary action by pre-determining the relationship between touch locations and required movement parameters. The system is configured in advance to know how to adjust the driven element for each possible touch point, eliminating the need for complex real-time calculations and reducing control system complexity while maintaining haptic feedback consistency.
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 approach results in a more pleasant and high-quality operating experience by providing consistent haptic feedback regardless of touch location, compensating for mechanical inhomogeneities and one-sided mounting, thus enhancing user interaction with the vehicle's operating device.
Implementation Method 1
The actuator comprises, for example, at least one stationary part and at least one part that can be moved relative to the stationary part... In the case of the electromagnet as the yoke. In the case of an electric motor, the movable part is also referred to as a runner or rotor
Data Source
AI summary
The invention relates to a method for operating an operator control apparatus (10) for a vehicle, in particular a motor vehicle, comprising at least one operator control element (14) which has a touch-sensitive surface (16) and by means of which a person can make inputs into the operator control apparatus (10) by touching the surface (16), comprising a detection device (20) by means of which respective points (38) at which the person touches the surface (16) in succession are detected, and comprising a movement device (24) which has at least one output drive element (32) by means of which the operator control element (14) is moved by movement of the output drive element (32) in order to generate respective haptic feedback to the person as a result of the points (38) of the surface (16) respectively being touched, wherein the movements of the output drive element (32) are varied depending on the points (38), which are detected by means of the detection device (20), at which the person touches the surface (16) of the operator control element (20) in succession in such a way that the movements which are executed in succession at the points (38) which are touched in succession by the operator control element (14) are the same.