GB/T 38839-2020 in English

Analysis of the core content of the standard

Flexible Control Technology Framework

Key technical requirements

1. Body stability

The standard requires that the drift of posture characteristics must meet the provisions of Article 7.6 of GB/T12642-2013, and the repetitive positioning accuracy should be better than 0.02mm. During the test, it is necessary to run continuously for 8 hours under the rated load and record the posture drift curve.

2. Control system architecture

Innovation in safety regulations

The standard specifies four collision response modes for the first time:
1) Collision-stop mode - Braking time ≤50ms
2) Slow-motion mode - Speed limited to 250mm/s
3) Zero-force control mode - Output torque ≤5Nm
4) Escape mode - Reverse speed adjustable

Implementation suggestions

1. For new production lines, it is recommended to give priority to modular controllers that support the EtherCAT bus
2. Human-machine collaboration scenarios must be configured with a dual-loop safety circuit that meets the Cat.3 safety level
3. The visual guidance system needs to be synchronized with the motion control cycle, and it is recommended to use the IEEE1588 time synchronization protocol

Technology Evolution Trends

This standard is a localized extension of the 2015 version of ISO/TS15066. In the future, it will develop in the direction of digital twin integration and AI autonomous decision-making. The digital twin application scenarios foreseen in Appendix A have been piloted in leading domestic companies.