Laser Readjustment Windows to Prevent Measurement Interference
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Solution Overview
Problem
Readjusting a laser system during a measurement process can cause signal interference, particularly when the measuring machine and laser control share the same system clock, affecting measuring accuracy.
Innovation Solution
Implement a method that blocks measurements during a specified time window and readjusts the laser system within this window, using a measuring controller to adjust digital control signals based on sensor feedback, ensuring synchronized frequency changes and identical control settings inside and outside the measurement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If readjustment is performed during measurement process, then laser system can maintain optimal performance through continuous calibration, but signal interference occurs affecting measurement accuracy
Solution Approach 1:
The measurement process is segmented into active measurement phases and readjustment phases. During active measurement, the system maintains stable operation while readjustment operations are deferred to designated time windows when measurements are blocked, thus preventing interference between readjustment activities and measurement activities
Solution Approach 2:
The system performs preliminary actions by blocking measurements before readjustment operations and resuming measurements after readjustment completes. This preliminary blocking prevents signal interference from occurring during frequency changes, ensuring measurement accuracy is maintained
2Productivity
If measurement is continuously performed, then productivity is maintained, but readjustment cannot be performed leading to drift in laser output
Solution Approach 1:
The system implements periodic readjustment cycles where measurements are temporarily blocked at regular intervals to perform calibration. This periodic action ensures laser output precision is maintained through regular readjustment while minimizing impact on overall productivity by keeping readjustment windows brief and scheduled efficiently
Data Source
AI summary
A method for readjusting a laser system includes (i) specifying a time window in which a change in a modulation frequency of the laser system is carried out, (ii) blocking a measurement by the laser system in the specified time window, and (iii) performing the readjustment of the laser system in the specified time window, wherein a digital-analog converter of the laser system is set to provide precise control of analog signals of the laser system. A computer program, an apparatus, and a storage medium for this purpose is also disclosed.