In this paper we propose a new motion simulator based on a tendon-controlle
d tensegrity structure. The simulator is equipped with a nonlinear controll
er that achieves robust tracking of desired motions. The controller paramet
ers can be tuned to guarantee tracking to within a prespecified tolerance a
nd with a prescribed rate of exponential convergence. The design is verifie
d through numerical simulations for specific longitudinal motions of a symm
etric aircraft.