Korea Institute of Machinery & Materials

Lg Chem, Ltd

Samsung Heavy Ind. Co., Ltd

Sang-Kyu Choi

Cheol-hoon Park

Sang-yong Ham

Tae Gwang Yoon

Doo Euy Hong

Young-Su Son

Sung Hwi Lee

Young Joon Shin

Kwangho Yoo

Hyunwoo Park

Kwang Ho Yoo

Dong-won Yun

Eunyoung Oh

Soon-Ho Choi

Doo-euy Hong

Youngjoo Shin

Sung-mok Ahn

Jae Keun Shim

Kyung-jun Choi

Seung-myun Hwangbo

Seong-joon Park

Seyoung Kim

Cheol Hoon Park

Hyun Joon Kwon

Sang Yong Ham

In a biomimetic artificial muscle module, a biomimetic artificial muscle assembly having the biomimetic artificial muscle module, and a method of controlling the biomimetic artificial muscle module, the biomimetic artificial muscle module includes an operating part, an elastic part, a driving part, a locking part and first and second sensors. The operating part contracts or relaxes along a longitudinal direction. The elastic part is connected to a first end of the operating part, and behaves elastically behave according to an external force. The driving part is connected to a second end of the operating part, and drives the operating part to be contracted or relaxed. The locking part selectively blocks a length of the operating part from being changed. The first and second sensors respectively sense the elastic part and the operating part.

Biomimetic artificial muscle module, biomimetic artificial muscle assembly having the same, and method of controlling the same

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.

Device for driving artificial muscle module and method for driving artificial muscle module

A method for manufacturing a lithium ion polymer battery is provided in which in injecting electrolyte into a lithium ion polymer battery, the battery cell is immersed in an electrolyte impregnation bath to allow the electrolyte to be impregnated into the cell. The electrolyte can be impregnated simultaneously, and as the battery cell is activated, the electrolyte is settled down in the interior of the battery cell. Thus, when the battery cell is sealed, a phenomenon that the electrolyte is present at the sealed portion can be prevented.

Method for manufacturing lithium ion polymer battery, battery cell, and lithium ion polymer battery including the same

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.

Thrust magnetic bearing for bias compensation

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.

Composite magnetic bearing having auxiliary bearing coupled thereto

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.

Air-foil bearing

A thrust bearing comprising a damper body including a body part and protrusions axially protruding at predetermined areas on the body part with flat tops, and thrust top foils each having a contact portion that is in surface contact with the tops of the protrusions.

Thrust bearing and combo bearing

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.

Magnetic bearing structure and turbo machine having the same

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.

Split combo bearing

Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the battery case is provided at a sealing portion around an electrode assembly receiving part thereof with an exhaust guide sealing portion configured in a structure in which a width of the exhaust guide sealing portion decreases from an inside of the sealing portion toward an outside of the sealing portion such that a sealing force of the exhaust guide sealing portion is first released, when high-pressure gas is generated in a battery cell, and therefore, the high-pressure gas is exhausted outside, the exhaust guide sealing portion being thermally welded with a sealing force less than that of a sealing portion located at a remaining region ('a remaining sealing portion'), and the battery case is further provided at a middle of the exhaust guide sealing portion with a bridge sealing portion extending in parallel to the electrode assembly for interconnecting opposite sides of the remaining sealing portion with a predetermined width, the bridge sealing portion being thermally welded with a sealing force greater than that of the exhaust guide sealing portion.

Secondary battery having sealing portion of novel structure

A flow control mechanism is provided for controlling a stern flow field disturbed by cooling water discharged from the cooling water outlet of a ship. The flow control mechanism is located within a distance, which corresponds to three times the diameter of the cooling water outlet, from the cooling water outlet, is installed at an angle from 16&#xb0; to 30&#xb0; with respect to the horizontal plane of a hull, and has a vertical height, which is within a range from 0.2 times to 0.6 times the diameter of the cooling water outlet in a vertical direction of the hull, and a horizontal width, which is within a range from 0.5 times to 1.3 times the diameter of the cooling water outlet in a horizontal direction of the hull. Thereby, the flow control mechanism restores the distribution of wake flow that encounters a propeller so that the distribution of the wake flow is symmetrical around the central axis of the hull, and reduces the generation of a cavity. Thus, the vibration performance of the ship is improved, and the propulsive efficiency of the ship is also improved.

Growing community of inventors

Daejeon, South Korea

Sang-Kyu Choi