Linear Motor Waveform Adaptation for Stronger Safe Vibration
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Solution Overview
Problem
Linear motors in electronic devices often fail to provide the expected vibration effect due to mismatched frequency and amplitude of the vibration waveform described in the vibration description file with the characteristics of the linear motor.
Innovation Solution
A method and apparatus for adjusting the vibration waveform of a linear motor by expanding the transient waveform into a waveform sequence with frequencies adapted to the linear motor, and ensuring that vibration parameters do not exceed safety limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vibration waveform parameters are directly applied from the vibration description file, then the control is simple, but the vibration effect does not match the linear motor characteristics
Solution Approach 1:
The patent adjusts vibration waveform parameters including frequency, amplitude, and transient waveform characteristics to match the specific characteristics of different linear motors. By modifying these parameters based on motor attributes, the system achieves better vibration effect matching without requiring complex hardware changes.
Solution Approach 2:
The system performs preliminary adjustment of the vibration waveform before actual vibration occurs. The adjustment module pre-processes the waveform data from the vibration description file, adapting it to the target linear motor's characteristics in advance, which prevents mismatched vibration effects during operation.
2Reliability
If the transient waveform is expanded into a waveform sequence to improve vibration effect, then the vibration intensity increases, but the processing time and complexity increase
Solution Approach 1:
The transient waveform is segmented and expanded into a waveform sequence consisting of multiple target transient waveforms. This segmentation allows the system to create more detailed vibration patterns that better match linear motor characteristics, improving vibration effect quality while managing processing complexity through structured decomposition.
Solution Approach 2:
The waveform sequence consists of periodically repeated target transient waveforms. By expanding a single transient waveform into a sequence of periodic repetitions, the system enhances the overall vibration effect and ensures sustained matching with the linear motor's operational characteristics.
3Reliability
If the vibration parameters are increased to enhance vibration intensity, then the vibration effect improves, but the safety limits may be exceeded
Solution Approach 1:
The system incorporates safety limit detection that monitors vibration parameters during the adjustment process. When parameters approach or exceed safety thresholds, the system provides feedback to prevent further increases, ensuring that vibration intensity is enhanced only within safe operational boundaries for the linear motor.
Solution Approach 2:
The system detects and prevents potential safety violations before they occur by monitoring vibration parameters against predefined safety limits. This beforehand cushioning mechanism ensures that even as vibration intensity is increased to improve effects, the linear motor remains protected from exceeding its operational safety boundaries.
Data Source
Figure 1a~1b
Figure 2
Figure 3a
AI summary
This application provides a method and an apparatus for adjusting a vibration waveform of a linear motor. At least one of the following steps is performed: obtaining a frequency of a steady-state waveform of a vibration description file, and mapping the frequency to a target frequency according to a preset first mapping rule and a frequency of the linear motor; or obtaining a transient waveform of the vibration description file and expanding the transient waveform into a waveform sequence formed by a plurality of target transient waveforms, where the frequency of the waveform sequence is the same as a frequency of the transient waveform of the vibration description file, and a frequency of a target transient waveform is adapted to the linear motor. Therefore, both the steady-state waveform and the transient waveform can be adapted to the characteristics of the linear motor, thereby improving the vibration effect of the linear motor.