Smooth human interaction control using torsion torque controller and motor-side normalization compensator focusing on back-forward drivability

Abstract

This paper focuses on back-forward drivability and defines the ideal drivability. This paper proposes a new back-forward drivable control method that achieves vibration suppression while maintaining back-forward drivability for a two-inertia system. The proposed control system combines torsion torque control (TTC) and a motor-side normalization compensator (MNC) to facilitate human-robot interactions. The effectiveness of the proposed control system is verified based on numerical simulation and experimental results, and the vibration of the back-forward drivable response is drastically suppressed.