The WeArable Lower Limb Anthropomorphic
Exoskeleton or WALLAE is a new type of Assistive Walking Device (patent
developed by SOC Robotics and researchers at Simon Fraser University.
WALLAE uses a mix of Stuart Platform hexapods, spring dampers and rotary
actuators for it's joints providing a
range of motion that closely duplicates human motion. WALLAE
consists of 4 hexapods, 4 spring dampers and 2 rotary actuators for a total of
actuators. Watch technology based on
introduce a new level of compliance into an otherwise rigid structure
providing a more natural gait and wearing experience. Hexapods, being
light and strong with a broad range of motion, allow the structure to be as
compact as possible while still retaining strength and agility. The
hexapod's ability to change its length while still executing roll, pitch and
yaw motions reduces chaffing by automatically accommodating to changes in
the wearer's physical topology. A comprehensive set of Inertial
Measurement Units (IMUs) monitor the position of all actuators in real time
allowing the gait controller to correct gait execution when transitioning
from level walk to running to stair climbing. Operator intent is
monitored using a mix of inertial, pressure and
surface electromyograph (sEMG) sensors.
Bluetooth integration allows complete monitoring and/or control of vital WALLAE systems on an iPhone or Android device. WALLAE is
designed to operate without the support of a cane or crutches. At
least that's our goal.
WALLAE is being developed as part of
an Assistive Walking Technology project
supported in part by funding from an NSERC CRD grant.
information email wallae @ soc-robotics.com.