“…Although we found a large set of safety features, only a few are presented here due to page limitations. Visualization (e.g., display of plans, current progress) [20], [21] Force threshold checks [22], [23] Low speed or motor torque (i.e., slow motion) [24], [25] E-pause and/or E-stop [11], [26] Dynamic constraints (e.g., safety volume, virtual fixture) [27], [28] Redundant sensors (e.g., dual encoders) [29], [30] C. Examples: Safety Features of ROBODOC To illustrate how to apply SDV to an actual system, we selected a commercial robot system for orthopaedic surgery, the ROBODOC R system [31], [32], as a case study. This system has a solid set of safety features that obtained FDA approval and CE marking, and has been in clinical use since 1992.…”