Haptic Motor Connector Tuning for Multi-Resonance Feedback
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Solution Overview
Problem
Conventional haptic feedback systems in hand-held devices, such as game controllers, are limited by rigid connections that restrict the flexibility and optimization of haptic motor control, resulting in inefficient vibration transfer and a lack of variety in haptic feedback.
Innovation Solution
A device configuration that allows haptic motors to move relative to the housing, converting it into a two-degree-of-freedom mass-spring-damper system, enabling tuning of mass, stiffness, and damping factors to achieve multiple resonance peaks for varied haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If haptic motor is rigidly connected to housing, then structural stability is improved, but haptic feedback quality and control flexibility deteriorate
Solution Approach 1:
The device is segmented into distinct components: a housing, a connector, and a haptic motor. The connector acts as an independent element that couples the haptic motor to the housing, allowing each component to be optimized separately. This segmentation enables the haptic motor to be decoupled from the housing structure, improving haptic feedback quality while maintaining overall structural stability through the connector interface.
Solution Approach 2:
The connector serves as an intermediary element between the haptic motor and the housing. This mediator allows for optimized mechanical coupling that enhances vibration transfer efficiency and haptic feedback quality while maintaining structural stability. The connector's specific design (including mounting geometry and material properties) enables it to transmit haptic forces effectively without rigidly constraining the haptic motor.
2Power
If larger haptic motor is used, then haptic output is improved, but device size, weight, and energy consumption increase
Solution Approach 1:
The system optimizes haptic output by changing key parameters: the connector's mechanical properties (stiffness, damping, mass) are specifically tuned to resonate with the haptic motor at desired frequencies. This parameter optimization allows smaller haptic motors to achieve equivalent or superior haptic output compared to larger motors in rigid configurations, thereby reducing device weight while maintaining or improving haptic performance.
Solution Approach 2:
The invention leverages mechanical vibration and resonance principles by designing the connector to have specific natural frequencies that align with the haptic motor's operating frequencies. This resonant coupling amplifies the haptic output efficiently, allowing smaller motors to generate stronger vibrations. The connector's vibrational characteristics are optimized to maximize energy transfer from the motor to the housing, improving haptic output without increasing motor size.
3Ease of manufacture
If rigid connection is used, then manufacturing simplicity is improved, but haptic feedback variety and optimization deteriorate
Solution Approach 1:
The connector introduces dynamic characteristics to the haptic system, transitioning from a static rigid connection to a dynamic coupled system. The connector's mass, stiffness, and damping properties create a two-degree-of-freedom system that exhibits rich vibrational behavior. This dynamic design enables multiple resonance peaks and varied haptic feedback modes, significantly increasing haptic feedback variety while remaining manufacturable through standard precision manufacturing techniques.
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
Enhances haptic feedback by allowing smaller haptic motors to provide equivalent or enhanced output, reduces device size, weight, and energy consumption, and enables different forms of feedback for diverse gaming experiences.
Implementation Method 1
Driven by one or multiple superimposed electrical wave functions, the haptic motor will generate a sinusoidal or impulsive force that accelerates the controller to produce a rumble feel or a hi-definition (HD) crisp shock feedback
Implementation Method 2
A device configured to generate a haptic response... allows haptic motors to move relative to the housing, converting it into a two-degree-of-freedom mass-spring-damper system, enabling tuning of mass, stiffness, and damping factors to achieve multiple resonance peaks
Implementation Method 3
enabling tuning of mass, stiffness, and damping factors to achieve multiple resonance peaks for varied haptic feedback
Data Source
AI summary
A device configured to generate haptic feedback is disclosed. The device includes a housing, a connector, and a haptic motor. The connector includes a mount end coupled to the housing and a distal end spaced away from the mount end. The haptic motor is coupled to the distal end of the connector. Activation of the haptic motor causes the haptic motor to move relative to the housing to generate the haptic feedback.