Abstract: This invention relates inter alia to a motion generator which comprises: an end effector; a stationary support having a base; at least one first tensile member, and at least six second tensile members, wherein each of the at least one first tensile member and the at least six second tensile members comprises a elastic element and each of which tensile members being attached at one end thereof to the end effector and being attached at the other end thereof to the stationary support; in which each tensile member applies a tensile force between the end effector and the stationary support, and in which each one of the at least six tensile members is independently adjustably tensioned by an actuator fixed to the stationary support which acts on the tensile member at a point along its length between the end effector and the elastic element, wherein the actuator acts to change the tension in the part of the tensile member between the end effector and the actuator in order to affect the forces and moments applied to

Abstract: This invention relates to motion generators comprising: an end effector, a stationary support, a first set of elastic elements interconnecting the end effector and the stationary support; a set of tensile members; in which the end effector is supported within the stationary support by the elastic elements; and a set of actuators in which the motion generator further comprises at least six rockers each rocker being pivotally mounted at one end thereof on the stationary support, and each rocker having a free end; the set of tensile members comprising: at least six elongate tensile members, each elongate tensile member having one end connected to a rocker and the other end connected to one of a second set of elastic elements which are fixed; a set of connecting elements connecting each rocker to the end effector and in which each one of the set of tensile members is independently adjustably tensioned by an associated actuator to move the free end of the rocker, which rocker movement causes movement of a connecte