The walking assistance robot suit has four actuators for the hip
and knee joints motion in the sagittal plane [61]. In its control
system, mutual joint torques between the suit and human are fed
to a series of neural oscillators, serving for the synchronization
between suit and human, and then the oscillators return the suit’s
desired joint angles. In [62], in order to provide assistance on hip
joints and keep an anti-phase relationship between left and right
hip joints, a mutual inhibition between left and right oscillators is
as well incorporated into the control system.