Velocity Pattern Synchronization for Shape Measuring Apparatus Control Lag
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Solution Overview
Problem
Conventional shape measuring apparatuses experience control lag due to unsynchronized acceleration/deceleration timing with control sampling cycles, leading to inaccuracies in measurement efficiency and probe positioning.
Innovation Solution
A method is developed to generate and correct velocity patterns for the shape measuring apparatus, ensuring synchronization with control sampling cycles by adjusting the number of control sampling times in acceleration, uniform velocity, and deceleration sections, and inserting adjustment sections as needed, to maintain precise control over probe movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the velocity pattern is generated without synchronization to control sampling cycle, then the measurement efficiency can be improved by increasing maximum velocity and acceleration, but control lag occurs leading to positioning inaccuracies
Solution Approach 1:
The velocity pattern is pre-calculated and corrected to synchronize acceleration/deceleration timing with control sampling cycles before execution. This preliminary synchronization ensures that velocity changes occur at appropriate control intervals, preventing control lag while enabling higher maximum velocities and accelerations for improved measurement efficiency
Solution Approach 2:
The invention modifies the velocity pattern parameters (acceleration/deceleration timing) to align with control sampling cycle timing. By adjusting these parameters, the system achieves synchronized control that prevents positioning errors while maintaining high measurement efficiency through optimized velocity and acceleration profiles
2Speed
If the acceleration/deceleration timing is not synchronized with control sampling cycle, then higher maximum velocity and acceleration can be achieved, but control errors accumulate leading to trajectory deviations
Solution Approach 1:
The system incorporates feedback by monitoring the synchronization between velocity pattern timing and control sampling cycles. The velocity pattern is corrected based on this synchronization feedback, ensuring that acceleration and deceleration events occur at appropriate control intervals, thereby preventing control errors from accumulating and maintaining trajectory accuracy
Solution Approach 2:
The velocity pattern is dynamically adjusted to synchronize with control sampling cycles. The acceleration and deceleration timing is made adaptive to the control system's sampling rhythm, allowing the probe to achieve higher speeds while maintaining reliable control through coordinated timing between velocity changes and control updates
Data Source
AI summary
There is provide a method for controlling a shape measuring apparatus that synchronize an acceleration/deceleration changing timing of a velocity pattern with a control sampling cycle, and prevents a control lag.Based on a shape of a movement path set based on preliminarily-obtained shape data of an object to be measured, a velocity pattern for a probe to move along the movement path.It is determined whether a velocity changing timing of the velocity pattern is synchronized with a control sampling cycle of a shape measuring apparatus.When the velocity changing timing of the velocity pattern is not synchronized with the control sampling cycle, the velocity pattern is corrected such that the velocity changing timing of the velocity pattern is synchronized with the control sampling cycle of the shape measuring apparatus.