{ "device_type": "passive upper-limb exoskeleton surrogate", "maximum_assist_torque_Nm": 13.0, "engagement_angle_deg": 50.0, "full_assist_angle_deg": 105.0, "assist_transfer_efficiency": 0.82, "interface_force_operational_threshold_N": 45.0, "threshold_interpretation": "Operational synthetic threshold for persistence/peak-count calculations; not a clinical or injury threshold.", "sampling_rate_hz": 50, "cycle_duration_s": 6.0, "cycles_per_scenario_condition": 8, "random_seed": 7026226 }