The Pelvic Assist Manipulator
(PAM) is an active device for assisting the human pelvis to allow
naturalistic motion [6]. There are a variety of active devices that
target a particular disability or weakness, and by repetitive motion,
try to regain the lost capability [7]–[11]. A limiting feature
of these machines is that they move patients through predetermined
movement patterns rather than allowing them to move
undertheirowncontrol