What Are the Overall Accuracy and Repeatability of the DSY Low-Voltage Servo System?

Repeatability Test Data Table

Repeatability Accuracy Calculation

Repeatability is typically evaluated using the maximum deviation range, calculated as: Repeatability Accuracy = Maximum Position Deviation − Minimum Position Deviation

Row-by-row calculation:

Row 1: 8 − (−15) = 23

Row 2: 7 − (−15) = 22

Row 3: 11 − (−14) = 25

Row 4: 4 − (−16) = 20

Row 5: 4 − (−15) = 19

Row 6: 5 − (−15) = 20

Among all test points, the maximum deviation range is 25 pulses, and the minimum is 19 pulses.

Performance Analysis

Deviation Stability: The deviation range for most test points is concentrated around 20 pulses, with only Row 3 (position command 524286) reaching 25 pulses. Overall fluctuation is not severe.

Deviation Direction: The maximum position deviations are all negative values (-14 to -16), while the minimum values are all positive (4 to 11). This indicates that the motor feedback is distributed on both sides of the command value, with no significant unidirectional offset.

Accuracy Level: If converted using the pulse equivalent (e.g., 1 pulse ≈ 0.001mm), the repeatability accuracy is approximately 0.019~0.025mm. This is a good level for a low-voltage servo system and can meet most general industrial positioning requirements.

Conclusion and Recommendations

Conclusion: The repeatability accuracy of the DSY low-voltage servo system is stable, with a maximum deviation range of 25 pulses. Overall performance is reliable.

Recommendation: For applications with extremely high precision requirements (such as precision machining), it is advisable to check mechanical transmission backlash, coupling installation, and encoder wiring to further optimize accuracy.

Updated on: 28/02/2026