# Robot Joint Backlash Compensation: From Dual-Encoder Principles to Play Operator Modeling and Python Simulation

- Source: Guyuehome
- Published: 2026-11-02T11:16:00.000Z
- RoboHot: https://robohot.news/en/items/c4rlzlz9zuimw3sc21hltyqef
- Original: https://www.guyuehome.com/detail?id=2115818966757699585

## Summary

The article addresses the backlash and lost motion problem in robot joint reducers by building a dual-inertia backlash transmission model described with a Play operator, and designing a direction-reversal state machine with rate-limited feedforward compensation. It quantitatively compares three control schemes through three sets of experiments and provides a Python simulation implementation path.