Drive Time-Base Adjustment for Motion Control Jitter Reduction
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Solution Overview
Problem
Motion control systems experience jitter due to deviations in the timing of control events among drive devices, leading to lack of synchronization and inaccurate regulation of motion axes, which existing technologies fail to adequately address.
Innovation Solution
A motion control system that includes at least one drive device capable of receiving a data signal associated with a time base from a controller device, determining the frequency adjustment independent of synchronization processes, and adjusting its own time base to match the controller's frequency, thereby reducing jitter and improving synchronization and regulation of motion axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drive devices use independent local time bases for control events, then device autonomy and operation are maintained, but timing synchronization and jitter reduction are compromised
Solution Approach 1:
The drive device receives feedback about the controller's time base frequency through data signals, measures the frequency deviation, and adjusts its local time base accordingly. This closed-loop feedback mechanism maintains synchronization while preserving device autonomy, resolving the contradiction between independent operation and timing precision.
Solution Approach 2:
The drive device performs self-adjustment of its time base frequency by autonomously measuring the controller's frequency and applying corrections without external intervention. This self-service approach maintains device independence while achieving precise synchronization, eliminating jitter in control events.
2Measurement precision
If time base frequency is adjusted based on synchronization data, then synchronization is improved, but processing complexity and computational load increase
Solution Approach 1:
The invention extracts only the essential frequency information from the controller's data signals, separating the critical synchronization parameter (frequency) from other unnecessary data. This extraction approach reduces processing complexity while maintaining high synchronization accuracy, as the drive device only needs to measure and adjust based on frequency rather than processing complete synchronization packets.
3Measurement precision
If jitter reduction mechanisms are implemented, then control event synchronization is improved, but system complexity and implementation difficulty increase
Solution Approach 1:
The invention changes the frequency parameter of the local time base to match the controller's time base frequency. By adjusting this single critical parameter rather than implementing complex synchronization protocols or multiple coordination mechanisms, the system achieves improved control event synchronization with minimal added complexity.
Data Source
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AI summary
A system for reducing jitter in a motion control system which includes at least one drive device programmed or configured to receive data associated with a time base of a controller device in the motion control system, determine the frequency of the time base of the controller device based on the data associated with the time base of the controller device, determine a frequency adjustment to be made to a time base of the at least one drive device based on the frequency of the time base of the controller device, adjust a frequency of the time base of the at least one drive based on the frequency adjustment, and provide data associated with the time base of the at least one drive device.