Here is a project of TU Delft – MINDWALKER exoskeleton is equipped with powerful and efficient actuators to support hip adduction/abduction, flexion/extension, and knee flexion/extension. The actuators are designed using Series Elastic Actuation (SEA) principle. The exoskeleton has also integrated advanced sensors such as precise joint angle sensors, Inertial Measurement Units (IMUs), force/torque sensors, obstacle detection sensors and etc. All the actuators and sensors are connected to a network created by Ethernet-based fast fieldbus system called EtherCAT.
And some publications: