Diagonal Actuator Haptic Feedback Control Device
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Solution Overview
Problem
Existing haptic feedback control devices for motor vehicles are bulkier due to the need for multiple actuators to generate feedback in different directions, limiting their placement in vehicles with restricted space.
Innovation Solution
A haptic feedback control device with a parallelepiped support plate and two actuators fixed diagonally on either side of the center, allowing bidirectional feedback without the need for separate actuators for each direction, using a common drive direction and perpendicular direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple actuators are used to generate haptic feedback in different directions, then bidirectional haptic feedback is achieved, but the device bulk increases
Solution Approach 1:
The patent combines two unidirectional actuators arranged diagonally to work together as a single bidirectional haptic feedback system. By positioning the actuators at diagonal corners of the support plate and coordinating their activation, the system achieves bidirectional feedback capability while using fewer components than traditional approaches, thereby reducing overall device bulk.
Solution Approach 2:
The patent transitions from a single-actuator unidirectional approach to a two-actuator diagonal arrangement that enables bidirectional feedback. By adding the dimensional aspect of diagonal positioning and coordinated activation, the system achieves enhanced functionality (bidirectional feedback) without proportionally increasing device volume.
2Volume of stationary object
If two actuators are arranged diagonally to generate bidirectional feedback, then device bulk is reduced, but feedback homogeneity may be compromised
Solution Approach 1:
The patent employs asymmetric diagonal positioning of the two actuators on the support plate. This asymmetric arrangement, with actuators placed at opposite diagonal corners rather than symmetric positions, enables bidirectional feedback generation while maintaining compact dimensions. The asymmetric layout is optimized to achieve homogeneous feedback distribution across the touch surface.
Solution Approach 2:
The patent applies local quality optimization by positioning actuators at specific diagonal locations on the support plate and tailoring their individual activation patterns. Each actuator is controlled to provide appropriate feedback strength and timing for its specific location, ensuring homogeneous overall feedback perception across the entire touch surface despite the asymmetric actuator arrangement.
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 configuration reduces the bulk of the control device while providing homogeneous bidirectional haptic feedback, enhancing user experience by maintaining focus on the road without the need for multiple actuators, thus optimizing space and feedback quality.
Implementation Method 1
two actuators fixed to said plate with their axes of drive substantially parallel to each other and to an edge of said plate, said actuators being configured to drive said plate in translation along a common drive direction so as to generate haptic feedback
Data Source
Figure 1~2
AI summary
The invention relates to a haptic feedback control device comprising: - a support plate (3) having a parallelepiped shape and configured to transmit haptic feedback to a user, - a sensor (5) with a touch surface carried by said plate and configured to detect a press on the touch surface, - two actuators (7) fixed to said plate (3) with their drive axes (A1, A2) substantially parallel to each other and to an edge (3a) of said plate (3), said actuators (7) being configured to drive said plate (3) in translation along a common drive direction (D1) so as to generate haptic feedback when a press is detected. According to the invention, the two actuators (7) are arranged diagonally on said plate (3) on either side of the center (C) of said plate (3), so as to generate bidirectional haptic feedback.