PROBLEM TO BE SOLVED: To provide a model of a topological soliton circuit.;SOLUTION: A hollow elastic shaft 11 is used which stores elastic energy as a restoring force when it is twisted in the circumference direction around the center axis, reduces its outside diameter ϕn inward in the radial direction when a tensile force is applied in the axial direction and it is extended in the axial direction, has a diameter expanding force serving as a restoring force outward in the radial direction, and has a restoring force also in the axial direction. A plurality of unit cells 12 are attachably and detachably fixed at intervals in the axial direction of the hollow elastic shaft 11. The unit cell is provided with a rotary drive shaft 51 which is inserted in the inside of the hollow elastic shaft 11 along the axial direction, has the outside diameter ϕr smaller than the inside diameter ϕi of the hollow elastic shaft and, therefore, is in contact with the inner peripheral surface of the hollow elastic shaft 11 at a position Pc vertically above the outer circumference surface of the hollow elastic shaft, and conveys a rotary drive force to the hollow elastic shaft 11 via a friction force at the contact portion Pc when it receives rotary drive. This rotary drive shaft 51 is rotated by a rotary drive mechanism capable of controlling the numbers of rotation.;COPYRIGHT: (C)2010,JPO&INPIT
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