Vibration Waveform Conversion for Resonant Haptic Control
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Solution Overview
Problem
Existing vibration control systems for eccentric motors are inefficient as they require generating new vibration data from scratch, which is burdensome for application creators, and cannot directly utilize drive data intended for eccentric motors with vibration devices having different resonance frequencies and control mechanisms.
Innovation Solution
A vibration control system that generates vibration data for a vibration device with a higher resonance frequency by correlating the envelope trend of the eccentric motor's vibration waveform, allowing the vibration device to reproduce a similar vibration feeling without needing new data creation, using a reception section, frequency rate increase section, and vibration data generation section to adjust and output the data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vibration data is adjusted according to characteristics of each apparatus, then vibration control accuracy is improved, but the burden on application creators increases when creating vibration data from scratch
Solution Approach 1:
The patent copies the envelope trend from eccentric motor drive data to generate vibration data for linear vibration motors. Instead of creating new vibration data from scratch, the system replicates the essential characteristics (envelope trend) of the original drive data and applies it to the different vibration device type, thereby reducing the burden on application creators while maintaining vibration control accuracy.
Solution Approach 2:
The patent transforms eccentric motor drive data parameters into linear vibration motor vibration data by changing the frequency parameter while preserving the envelope trend. The system converts data intended for one type of vibration device into appropriate parameters for another type, allowing seamless adaptation without requiring application creators to generate new data.
2Adaptability or versatility
If eccentric motor drive data is used directly with vibration devices having different resonance frequencies, then compatibility is improved, but vibration quality deteriorates due to frequency mismatch
Solution Approach 1:
The patent changes the frequency parameter of the vibration data to match the resonance frequency of the target vibration device while preserving the envelope trend from the original eccentric motor drive data. This parameter transformation ensures both compatibility with different device types and optimal vibration quality by aligning with the device's resonant characteristics.
Solution Approach 2:
The patent introduces an envelope trend as an intermediary element that bridges eccentric motor drive data and linear vibration motor vibration data. This intermediary allows data from one device type to be adapted to another while maintaining vibration quality, as the envelope trend captures the essential vibration characteristics that can be applied across different device types.
3Object-affected harmful factors
If vibration frequency is set away from resonance frequency, then chatter vibrations are reduced, but vibration strength decreases
Solution Approach 1:
The patent optimizes the frequency parameter by setting it within a specific range (70% to 130% of the resonance frequency) rather than exactly at the resonance frequency. This parameter adjustment reduces chatter vibrations and discomfort while maintaining sufficient vibration strength, achieving a balance between harmful factors and useful output.
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 reduces the burden on application creators by allowing vibration control based on existing drive data, providing stronger and more comfortable vibrations by aligning the frequency within a 70% to 130% range of the resonance frequency, reducing discomfort and chatter vibrations.
Implementation Method 1
a vibration device 107 for which a resonance frequency is higher than that of the eccentric motor vibration device
Data Source
AI summary
A vibration control system includes: a reception section configured to receive eccentric motor drive data that is included in a program for an application and is for causing vibration of an eccentric motor vibration device; a vibration device for which a resonance frequency is higher than that of the eccentric motor vibration device and whose amplitude and frequency are controllable; and a vibration data generation section configured to generate vibration data for causing vibration of the vibration device based on the received eccentric motor drive data. The vibration data generation section generates the vibration data, which indicates a second waveform having an envelope with a change trend that correlates to a change trend of an envelope of a first waveform indicated by vibration of the eccentric motor vibration device vibrated by the eccentric motor drive data, the second waveform having a higher frequency than the first waveform.