Abstract: In a soft actuator, a soft actuator assembly having the soft actuator, and a wearable robot having the soft actuator or the soft actuator assembly, the soft actuator includes a first spring bundle, a first conductive pad and a second conductive pad. The first spring bundle has a plurality of fine wires, and is configured to be capable of being changed between a contraction state and a relaxation state according to a change of temperature. The first conductive pad has a first connector electrically connected to a first end of the first spring bundle. The second conductive pad has a second connector electrically connected to a second end of the first spring bundle. The first connector is fixed between the first conductive pad and the first spring bundle, and the second connector is fixed between the second conductive pad and the first spring bundle.

Abstract: In a soft actuator having a cooler, a wearable robot having the soft actuator, a massage device having the soft actuator, and a method for controlling the soft actuator, the soft actuator includes a heat reaction member, a cooling part and a controller. The heat reaction member is configured to be contracted or relaxed according to a temperature change. The cooling part includes a cooling surface disposed at the heat reaction member, and a heating surface disposed opposite to the cooling surface. The controller is configured to control a power supply part so that a power is blocked to be supplied to the heat reaction member and the power is supplied to the cooling part, when the heat reaction member is changed to be a relaxation state.

Abstract: In a driving device of an artificial muscle module and a driving method thereof, the driving device includes a fluid tank unit, a fluid providing line, a fluid collecting line, a circulation pump unit, a temp control unit and a fluid distributing unit. The fluid providing line includes high temp and low temp water tanks. The fluid providing line connects a first side of the artificial muscle module to the fluid tank unit. The fluid collecting line connects a second side of the artificial muscle module to the fluid tank unit. The circulation pump unit is positioned at least one of the fluid providing line and the fluid collecting line. The temp control unit controls temperature of the fluid. The fluid distributing unit is positioned at the fluid collecting line, and distributes the fluid in the fluid collecting line.

Abstract: In a driving device of an artificial muscle module and a driving method thereof, the driving device includes a fluid tank unit, a fluid providing line, a fluid collecting line, a circulation pump unit, a temp control unit and a fluid distributing unit. The fluid providing line includes high temp and low temp water tanks. The fluid providing line connects a first side of the artificial muscle module to the fluid tank unit. The fluid collecting line connects a second side of the artificial muscle module to the fluid tank unit. The circulation pump unit is positioned at least one of the fluid providing line and the fluid collecting line. The temp control unit controls temperature of the fluid. The fluid distributing unit is positioned at the fluid collecting line, and distributes the fluid in the fluid collecting line.

Abstract: The present invention relates to a thrust magnetic bearing for bias compensation, and more particularly, to a thrust magnetic bearing for bias compensation in which annular permanent magnets and electromagnets are disposed to face each other with respect to a levitated member and the permanent magnets are formed to be asymmetrical in lengths thereof in an axial direction to thus exert an attractive force for compensating for a bias by the difference in the lengths of the permanent magnets in the axial direction to compensate for the bias, and a current supply for bias magnetic flux is not required, saving energy.

Abstract: The present invention relates to a composite magnetic bearing having an auxiliary bearing coupled thereto, which has an improved structure for minimizing a length of a rotor and a system volume. The composite magnetic bearing of a radial type provided around a rotor having an auxiliary bearing coupled thereto for reducing friction, includes a magnetic bearing, and an auxiliary bearing fixed in the empty space in an inside of the stator cores on an inner side of a position the coils and the permanent magnets are provided thereto.

Abstract: The present invention provides an air-foil bearing including a damper body, a front welding plate, and a front top foil for increasing durability, and which has a first bending mode. The damper body includes a front body portion, a rear body portion, and a front protruded portion protruded upward from the front body portion to have a flat protruded surface, and the front welding plate includes a front first contact portion in surface contact with a top surface of the front protruded portion and a front second contact portion which is a portion that is bent from the front first contact portion in surface contact with the front welding plate.

Abstract: The present invention relates to a thrust magnetic bearing for bias compensation, and more particularly, to a thrust magnetic bearing for bias compensation in which annular permanent magnets and electromagnets are disposed to face each other with respect to a levitated member and the permanent magnets are formed to be asymmetrical in lengths thereof in an axial direction to thus exert an attractive force for compensating for a bias by the difference in the lengths of the permanent magnets in the axial direction to compensate for the bias, and a current supply for bias magnetic flux is not required, saving energy.

Abstract: Disclosed is a magnetic bearing structure including a permanent magnet, levitating a rotation body without a bias current, and easily magnetizing the permanent magnet. The magnetic bearing structure includes a ring-shaped permanent magnet provided on a side of a rotation shaft and magnetized in a direction parallel with a shaft direction of the rotation shaft, a coil installed on a side of the permanent magnet, and a conductor installed on an external side of the coil and used to form a magnetic field path. According to the configuration, when an additional bias current is not supplied to the coil installed in the magnetic bearing, a rotation body levitates according to the magnetic field caused by the permanent magnet, and a magnetized direction of the permanent magnet is in parallel with a shaft direction of the rotation shaft thereby allowing easy magnetization and increasing productivity of the magnetic bearing.

Abstract: A split combo bearing including a damper body that has a through-hole through which a rotor shaft passes, a cover that covers both axial sides of the damper body and a predetermined area of the outer circumference of the damper body, a thrust bump that is fixed to the side of the cover, which is in contact with the impeller on a rotor shaft, and is arranged circumferentially around the through-hole, a thrust top foil that is axially fixed to the outermost side of the thrust bump, and a radial top foil that is formed to cover the rotor shaft, and is disposed between the outer side of the rotor shaft and the inner side of the through-hole of the damper body.

Abstract: The present invention provides an air-foil bearing including a damper body, a front welding plate, and a front top foil for increasing durability, and which has a first bending mode. The damper body includes a front body portion, a rear body portion, and a front protruded portion protruded upward from the front body portion to have a flat protruded surface, and the front welding plate includes a front first contact portion in surface contact with a top surface of the front protruded portion and a front second contact portion which is a portion that is bent from the front first contact portion in surface contact with the front welding plate.

Abstract: The present invention relates to a composite magnetic bearing having an auxiliary bearing coupled thereto, which has an improved structure for minimizing a length of a rotor and a system volume. The composite magnetic bearing of a radial type provided around a rotor having an auxiliary bearing coupled thereto for reducing friction, includes a magnetic bearing, and an auxiliary bearing fixed in the empty space in an inside of the stator cores on an inner side of a position the coils and the permanent magnets are provided thereto.

Abstract: The present invention provides a split combo bearing including: a damper body that has a through-hole through which a rotor shaft passes and is composed of two or more first separate bodies that are axially separated; a cover that covers both axial sides of the damper body and a predetermined area of the outer circumference of the damper body and is composed of two or more second separate bodies that are radially separated to correspond to the first separate bodies; a thrust bump that is fixed to the side of the cover, which faces an impeller on a rotor shaft, is arranged circumferentially around the through-hole, and is formed by bending a thin plate with a wavy surface; a thrust top foil that is axially fixed to the outermost side of the thrust bump and is formed by bending a thin plate; and a radial top foil that is formed to cover the rotor shaft, is disposed between the outer side of the rotor shaft and the inner side of the through-hole of the damper body, has an insertion of which one end is installed

Abstract: Disclosed is a magnetic bearing structure including a permanent magnet, levitating a rotation body without a bias current, and easily magnetizing the permanent magnet. The magnetic bearing structure includes a ring-shaped permanent magnet provided on a side of a rotation shaft and magnetized in a direction parallel with a shaft direction of the rotation shaft, a coil installed on a side of the permanent magnet, and a conductor installed on an external side of the coil and used to form a magnetic field path. According to the configuration, when an additional bias current is not supplied to the coil installed in the magnetic bearing, a rotation body levitates according to the magnetic field caused by the permanent magnet, and a magnetized direction of the permanent magnet is in parallel with a shaft direction of the rotation shaft thereby allowing easy magnetization and increasing productivity of the magnetic bearing.