Haptic Feedback Substrate Single Actuator Multi-Resonance Control
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Solution Overview
Problem
Existing local haptic feedback devices, such as wristbands, require multiple vibrating motors to generate different haptic signals, leading to large space occupation and high costs, which hinder portability and efficiency.
Innovation Solution
A haptic feedback substrate with a single actuator and multiple vibration units, each having distinct inherent frequencies, where the actuator generates vibration signals that resonate with target frequencies within a preset threshold, allowing for independent control of vibration units to achieve local haptic feedback without the need for multiple actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple actuators are used to drive bases in different areas to vibrate, then local haptic feedback is achieved, but space occupation increases and cost increases
Solution Approach 1:
A single actuator is designed to perform multiple functions by sequentially driving different vibration units with different inherent frequencies. The actuator serves as a universal vibration source that can generate localized haptic feedback at multiple positions through frequency-selective resonance, eliminating the need for multiple dedicated actuators.
Solution Approach 2:
The system changes the frequency parameter of the actuator's output to control different vibration units. By adjusting the driving frequency to match the inherent frequency of specific vibration units, the system achieves spatially selective haptic feedback using a single actuator, thereby reducing space occupation while maintaining local control capability.
2Ease of operation
If multiple actuators are used to drive bases in different areas to vibrate, then local haptic feedback is achieved, but cost increases
Solution Approach 1:
The single actuator is designed as a multi-functional component that can replace multiple actuators. By implementing frequency-selective resonance control, one actuator achieves the same local haptic feedback functionality that would otherwise require multiple actuators, thereby reducing component count, manufacturing complexity, and overall cost.
Solution Approach 2:
The functions of multiple actuators are merged into a single actuator through the vibration units with different inherent frequencies. This consolidation reduces the number of components needed, simplifies the manufacturing process, and lowers costs while maintaining the capability to provide localized haptic feedback at multiple positions.
3Area of stationary object
If a single actuator drives multiple vibration units with different inherent frequencies, then space is reduced and cost is reduced, but vibration amplitude needs to be enhanced
Solution Approach 1:
The system utilizes mechanical vibration resonance by designing vibration units with specific inherent frequencies. When the actuator drives a vibration unit at its resonant frequency, the vibration amplitude is significantly enhanced, allowing a single actuator to generate sufficient vibration strength despite controlling multiple vibration units with reduced overall device size.
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 design reduces the size and cost of haptic feedback devices, enhances vibration amplitude, and enables more portable and intelligent touch feedback by using a single actuator to control multiple vibration units with different inherent frequencies, thereby simplifying the structural design and improving local haptic control.
Implementation Method 1
the actuator is configured to generate a vibration signal and drive the vibration unit with the inherent frequency being a target inherent frequency to resonate
Data Source
AI summary
The present disclosure provides a haptic feedback substrate, a haptic feedback apparatus and a haptic feedback method. The haptic feedback substrate comprises an actuator and a plurality of vibration units connected to the actuator, wherein each vibration unit has a different inherent frequency, the actuator is configured to generate a vibration signal and drive the vibration unit with the inherent frequency being a target inherent frequency to resonate, and a difference between the target inherent frequency and a frequency of the vibration signal is less than or equal to a present threshold.