Motor encoder protocol real-time conversion device and minimum delay method

By using nanosecond-level clock sources and phase-locked loop technology, the minimum delay of the encoder protocol real-time conversion device was achieved, solving the problem of position feedback lag in high-precision servo control systems, improving system stability and accuracy, and realizing efficient interconnection between encoders and drivers with different protocols.

CN121283302BActive Publication Date: 2026-02-27SUZHOU DEMAC MOTOR TECH CO LTD
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Patent Information

Application Number
CN202511865295.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-11
Publication Date
2026-02-27
Estimated Expiration
2045-12-11

AI Technical Summary

Technical Problem

Existing encoder protocol converters suffer from position feedback lag in high-precision, high-dynamic-response servo control systems. In particular, when processing different protocols, the double communication delay is superimposed, affecting system stability and control accuracy. Furthermore, existing conversion schemes lack adaptive capabilities and solutions with minimal delay.

Method used

A nanosecond-level high-precision clock source is used to record the timestamp of the position data. Combined with phase-locked loop technology, position data is periodically read from the encoder. Through interpolation calculation and phase-locked loop synchronization signal, the real-time position reading on the encoder side is synchronized with the driver request, reducing position transmission delay.

Benefits of technology

It effectively solves the position information delay problem in encoder protocol conversion, improves the stability and accuracy of system control, and realizes high-performance, low-cost interconnection between encoders and drivers from different manufacturers and with different protocols.

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Abstract

The present application relates to a kind of motor encoder protocol real-time conversion device and minimum delay method, the method is in protocol converter High-precision clock is arranged, and the following steps are executed: periodically reading position data from encoder, record its latch time and position value, and calculate real-time speed;When receiving the position reading request of driver, record request time, and interpolation calculation is carried out using set calculation formula, and the real-time position after compensation is returned to driver is obtained.The present application is key to use phase-locked loop to minimize delay, with the request time of driver as reference, the reading trigger timing of encoder is synchronized and phase adjusted, so that the next request of driver can be responded as soon as possible after the completion of encoder data reading, so as to minimize interpolation error.The present application effectively solves the position transmission delay problem when different protocol encoders and drivers are interconnected, and is suitable for high-precision servo control.
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