Optimal Lissajous Scanning Through Frequency and Phase Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for Lissajous scanning do not effectively determine and maintain optimal scanning conditions, particularly in non-repeating patterns, and fail to consider frequency and phase adjustments for maintaining scanning density.
Innovation Solution
A method that selects a frequency combination and mapping time delay difference within a preset range to achieve optimal scanning conditions, and applies a modulated drive phase offset to compensate for deviations in actual time delay differences, ensuring scanning density is maintained at a certain level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a repeating Lissajous pattern is used with integer frequencies, then the scanning pattern is stable and easy to implement, but the scanning density cannot be optimized for non-repeating patterns and lacks flexibility in frequency selection
Solution Approach 1:
The patent extends frequency selection from integer values to decimal frequencies (e.g., 90.5 Hz, 100.75 Hz), allowing continuous adjustment of frequency parameters to optimize scanning density for different applications. This parameter change enables flexible frequency combinations while maintaining systematic optimization through simulation-based selection.
Solution Approach 2:
The patent performs preliminary simulation of scanning density for various frequency combinations before actual scanning. By pre-evaluating and selecting optimal frequency pairs through simulation, the system prepares optimal scanning conditions in advance, avoiding real-time complexity during actual operation.
2Productivity
If the scanning frequency is increased to improve imaging speed, then productivity increases, but maintaining optimal scanning density becomes more difficult due to phase deviations
Solution Approach 1:
The patent implements a feedback mechanism that continuously monitors actual phase values during scanning and dynamically adjusts drive phase offsets to compensate for deviations. This closed-loop control maintains optimal scanning density even at high imaging speeds where phase drift occurs, by using real-time phase information to correct scanning conditions.
Solution Approach 2:
The patent transitions from static frequency and phase settings to dynamic adjustment of drive phase offsets based on actual scanning conditions. By making the phase parameters dynamic and adaptive rather than fixed, the system maintains scanning density optimization across varying operating conditions and speeds.
3Adaptability or versatility
If a non-repeating Lissajous pattern is used to capture increased dynamic information, then adaptability improves, but existing methods fail to provide guidance for determining optimal frequency and phase conditions
Solution Approach 1:
The patent uses simulation to create virtual models of scanning patterns and their density distributions before actual implementation. By copying and testing frequency combinations in a simulated environment, the system identifies optimal patterns for non-repeating Lissajous scanning without requiring complex analytical solutions or extensive trial-and-error in physical systems.
Data Source
AI summary
The present disclosure relates to a method of determining and maintaining a scanning condition for optimal Lissajous scanning. According to the present disclosure, the method includes selecting a frequency combination and a mapping time delay difference, when minimum scanning density according to the mapping time delay difference in the frequency combination within a preset frequency range for two axes is maximum, as an optimal scanning condition, and maintaining optimal scanning by applying a modulated drive phase offset to compensate for a deviation between an actual time delay difference and an optimal time delay difference selected as the optimal scanning condition due to a delay index adjusted according to an actual phase change. As described above, according to the present disclosure, a frequency combination may be more flexibly selected from a frequency combination having a decimal point in implementing Lissajous scanning. In addition, an optimal scanning condition may be determined, and scanning density may be continuously maintained greater than or equal to a certain level.