Biomechatronics and Intelligent Robotics Lab

Compact and Efficient Control Electronics for Portable Robots

Benefits/Advantages

Property Value
Lightweight Unilateral exoskeleton weight only 1 kg
High Torque Density Motor 7.0 Nm/kg, 4 times for other available devices
Effective Assistance Nominal torque is 48 or 64 Nm, can provide more than 50% torque assist for walking and reduce 75% muscle activities for squatting
High Bandwidth 65 Hz, walking and running are super stable
High Backdrivability 0.9 Nm, almost no mechanical resistance is felt
High Stiffness 15 ms
Interface Type >350 Nm/rad, more than average stiffness value of normal walking 260 Nm/rad
High Accuracy Tracking error < 3%

Control Architecture