Under a predefined gait trajectory control mechanism, the
desired joint trajectory is pre-recorded from a healthy person, or
extrapolated from a gait analysis data atlas, and then replayed
on an exoskeleton. To improve usability and flexibility of the
controller, the desired joint trajectory is usually parameterized
according to different postures. In our studied literature, this
kind of assistance mainly targets subjects partly/completely losing
normal voluntary movements, for example ATLAS (3.2.1) aims at
quadriplegic children, HAL (3.2.2) could be used by gait disorders
patients, ReWalkTM (3.2.6), eLEGS (3.2.7) and Vanderbilt Lower-
Limb Exoskeleton (3.2.8) are suitable for SCI patients. For proof
of concepts, validation results with healthy subjects are also
presented with some robotic devices dedicating to paraplegic
patients, e.g. IHMC Exoskeleton (3.2.3), MINDWALKER (3.2.4),
Walking assistance device by T. Ikehara et al. (3.2.5).