A powered exoskeleton, also known as powered armor, exoframe, or exosuit, is a mobile machine consisting primarily of an outer framework (akin to an insect's exoskeleton) worn by a person, and powered by a system of motors, hydraulics or Pneumatics that delivers at least part of the energy for limb movement.The main function of a powered exoskeleton is to assist the wearer by boosting their strength and endurance.