Provided is an apparatus for conveying a carrier and a system for controlling a carrier having the same, which couples a hoist and a hand using a non-contact damping structure using an eddy current. The apparatus for conveying the carrier conveys a carrier containing a wafer, and includes: a gripper for gripping the carrier; and a lifter for raising and lowering the gripper, in which the gripper and the lifter are connected in a non-contact damping structure, and a relative motion thereof is suppressed.

An example cantilever assembly includes a cantilever including an anchor configured to be coupled to a support, a tip, and an arm positioned between the anchor and the tip, a hollow conductive tube positioned at the tip of the cantilever, and a magnet suspended inside the hollow conductive tube with a first spring and a second spring. The first spring and the second spring are positioned at a first end and a second end of the hollow conductive tube respectively, and the magnet is positioned between the first spring and the second spring. The magnet is configured to move coaxially inside the hollow conductive tube as permitted by the first spring and the second spring, and the magnet suspended inside the hollow conductive tube operates as a tuned mass damper (TMD) to limit a resonant response of the cantilever assembly.

An eddy current damper includes a screw shaft movable in an axial direction, a plurality of first permanent magnets, a plurality of second permanent magnets, a cylindrical magnet holding member, a cylindrical conductive member having conductivity, a ball nut which meshes with the screw shaft, and a heat transfer layer which covers a surface of the conductive member opposed to the first permanent magnets and the second permanent magnets. The magnet holding member holds the first permanent magnet and the second permanent magnet. The conductive member is opposed to the first permanent magnets and the second permanent magnets with a gap therebetween. The ball nut is disposed inside the magnet holding member and the conductive member, and is fixed to the magnet holding member or the conductive member. The heat transfer layer has a thermal conductivity higher than that of the conductive member.

The present invention discloses a multi-dimensional eddy current tuned mass damper, which belongs to the technical field of structural vibration control. A main body of the multi-dimensional eddy current tuned mass damper is composed of two hollow cylinders, wherein an inner hollow cylinder is located in an outer hollow cylinder, ball grooves are formed in the opposite upper and lower walls of the inner and outer hollow cylinders, rolling balls are installed in the ball grooves, and the inner hollow cylinder is rotated in the outer hollow cylinder through the rolling balls; the inner hollow cylinder is provided with an inner cover plate, and the outer hollow cylinder is provided with an outer cover plate, forming a relatively closed box body structure; an orthogonal bidirectional mass element, a stiffness element and an eddy current damping element are arranged in the inner hollow cylinder, and a torsional stiffness element and an eddy current damping element are arranged between the inner hollow cylinder and the outer hollow cylinder. The multi-dimensional eddy current tuned mass damper of the present invention is not only convenient to adjust in terms of mass, stiffness and damping parameters, but also has regular and beautiful appearance, simple structure, and very simple connection with a main structure.

An eddy current damper includes a screw shaft, first permanent magnets, second permanent magnets, a cylindrical magnet holding member, a cylindrical conductive member, and a ball nut meshing with a screw shaft. The screw shaft is movable in the axial direction. The first permanent magnets are arrayed along the circumferential direction around the screw shaft. The second permanent magnet is arranged between the first permanent magnets, wherein the arrangement of magnet poles is inverted between the second permanent magnet and the first permanent magnet. The magnet holding member holds the first permanent magnet and the second permanent magnet. The conductive member is opposed to the first permanent magnets and the second permanent magnets with a gap therebetween. The ball nut is disposed inside the magnet holding member and the conductive member, and is fixed to the magnet holding member or the conductive member.

A rotating machine includes: a casing, a rotary shaft rotatably supported in the casing and extending in a thrust direction, a first magnet installed on the rotary shaft, an attenuation mechanism supported by the casing and disposed to face the first magnet in the thrust direction, a second magnet installed in the attenuation mechanism to face the first magnet in the thrust direction and that repels the first magnet, an impeller installed on one end of the rotary shaft, and support sections that support the attenuation mechanism with respect to the casing. Furthermore, the attenuation mechanism includes: an attenuator that attenuates vibrations of the second magnet in the thrust direction, and a pushing-back unit that pushes the second magnet back toward the first magnet.

Rotationally symmetric dampers (FIG. 3A) of a new type for eliminating and avoiding vibrations in machines and installations, particularly wind turbines. The damping occurs by magnetically generated eddy currents. In addition, vibration absorbers, particularly pendulum absorbers (7), are equipped with such magnetic dampers, and to installations, particularly wind turbines, that are exposed to vibratory forces and that comprise such vibration absorbers.

The present disclosure provides a multi-stable solenoid with one or more magnetic damping rings. In general, the magnetic damping rings provide an increased damping force to an armature of the multi-stable solenoid to ensure efficient operation, reduce detent position overshoot, and reduce an impact force at end positions.

Motion-damping systems and methods that include motion-damping systems are disclosed herein. The motion-damping systems are configured to damp relative motion between a base structure and an attached component that define a gap therebetween. The systems include an at least substantially rigid tubular structure that defines an internal volume and extends within the gap. The systems also include a magnetic assembly and a magnetically active body. One of the magnetic assembly and the magnetically active body is located within the tubular structure and the other of the magnetic assembly and the magnetically active body is operatively attached to a selected one of the base structure and the attached component. The magnetic assembly is in magnetic communication with the magnetically active body such that a magnetic interaction therebetween resists motion of the attached component relative to the base structure. The methods include dissipating energy with the motion-damping system.

A large-size axial eddy current damper manufactured by use of screw drive comprises a drive assembly and an eddy current damping generator; the drive assembly comprises a screw drive pair, and a stator and a rotor respectively made of magnetic conductive materials; the screw drive pair comprises a screw rod and a nut sleeved on the screw rod; the screw rod sequentially penetrates through central holes of upper and lower flanges of the stator; the nut is within the stator; the rotor comprises an outer rotor and an inner rotor having the bottom provided with a lower connecting flange; one or more eddy current damping generators are arranged between the stator and the outer rotor. Problems of having difficulty in manufacturing axial dampers with a large damping coefficient and simulating anti-vibration dampers with a speed index of less than 1, by use of eddy current damping, can be solved simultaneously.