摘要:
A double rotor-type brushless direct-current motor includes first and second annular-shaped rotors each having a plurality of north and south-polar magnets which are alternately disposed at a predetermined distance; a rotating shaft connected to a central portion of the rotors thorough a bushing; upper and lower cases receiving and rotatably supporting opposite ends of the rotating shaft; an annular-shaped stator having a plurality of stator coils supported by a molding filler to apply electromagnetic force to the first and second rotors in an opposite direction to each other, the stator being mounted between the first and second rotors at a predetermined clearance; and a control printed circuit board for applying a driving current with respect to the stator, the control printed circuit board being mounted one of the upper and lower cases; wherein the upper and lower cases, the control printed circuit board, the first and second rotors have a plurality of ventilating holes for circulating air from the outer side of the motor to the inside of the motor.
摘要:
A stator assembly operated in a 2-phase drive manner including first and second stator coils wound in a star shape with a plurality of projections and a plurality of grooves, and arranged with a predetermined phase difference; and an annular supporting body into which the first and second stator coils are inserted for supporting the coils, insulating them from each other. Each stator coil includes four projections and four grooves, and there is a phase difference .theta. between the first and second stator coils, the difference determined by the following equation: .theta.=360/2P.+-.360/P, wherein P denotes the number of a rotor's magnetic poles. A brushless direct-current motor operated in a 2-phase drive manner includes a stator having first and second stator coils wound in a star shape with a plurality of projections and a plurality of grooves, and arranged with a predetermined phase difference; a shaft rotatably supported on a case; at least one disk-shaped multi-pole rotor supported by the shaft with an air gap from the stator in an axial direction; first and second location sensors provided to the stator with the same phase difference as that of the first and second stator coils for detecting the rotor's magnetic pole; and a driving control circuit driving the first and second stator coils in response to the detection of the magnetic pole of the rotor by the first and second location sensors, wherein said phase difference is determined by the equation: .theta.=360/2P.+-.360/P (P=the number of a rotor's magnetic poles).
摘要:
A self-propelled endoscopic micro-robot, comprising a head for obtaining the errorless information of an interior of a tubular organ; an impact force generating unit connected the head generating an impact force according to a pneumatic pressure externally supplied and sucked by a air pressure supplier and making the self-propelled endoscopic micro-robot move in the tubular organ; and a plurality of supporting arms connected the head with end of the impact force for covering the impact force generating unit, making a housing of the self-propelled endoscopic micro-robot, and adjusting frictional force between the interior of the tubular organ and the housing as desired.
摘要:
A cell separating apparatus that can easily separate target cells contained in a fluid is provided. Target cells and a fluid are injected through a storage hole, and ejected to the outside of a rotation disk under the influence of a centrifugal force of the rotation disk. An electric field is applied to the outside of the rotation disk, and the target cells are gathered at a different position from the fluid due to di-electrophoresis. In addition, pivot arms placed at an outer surface of the rotation disk are open, and the open pivot arms collect the target cells. The collected target cell flow in a different storage portion through a fluid flow path. As a result, the target cells can be easily separated.
摘要:
A micro robot that can move for itself is provided. The micro robot moves by moving a plurality of legs with a plurality of cams driven by a driving device, which comprises a micro robot body, a rotational shaft installed in the body and connected to driving device for generating rotational force, a plurality of cams positioned sequentially and connected to the rotational shaft having a certain phase difference centering around the rotational shaft, a plurality of legs installed in the body capable of moving by rotation of the cams, said legs being abutted to the respective cams at one end portion thereof and protruding outwardly from the body at the other end portion thereof, respectively and a locomotion device for moving the body.
摘要:
In a micro capsule type robot for examining the internal organs of a human body, by installing stopping unit for stopping or delaying moving of a micro capsule type robot at a certain examination position of the internal organs according to a stop control signal inputted from outside of a human body, the micro capsule type robot can be fixed to a certain position of the internal organs of a human body or its movement can be delayed in case of need in spite of peristalsis of the internal organs in order to examine the certain position minutely, accordingly a lesion judgement rate can be improved and a diagnosis function of the micro capsule type robot can be heightened.
摘要:
A cell separating apparatus that can easily separate target cells contained in a fluid is provided. Target cells and a fluid are injected through a storage hole, and ejected to the outside of a rotation disk under the influence of a centrifugal force of the rotation disk. An electric field is applied to the outside of the rotation disk, and the target cells are gathered at a different position from the fluid due to di-electrophoresis. In addition, pivot arms placed at an outer surface of the rotation disk are open, and the open pivot arms collect the target cells. The collected target cell flow in a different storage portion through a fluid flow path. As a result, the target cells can be easily separated.
摘要:
A micro robot driving system for endoscope can move a micro robot forward, backward or changing the direction by transmitting rotation force generated by a driving means to a worm gear or a gear tooth shaped belt by a worm. The micro robot driving system in accordance with the present invention includes a micro robot body, rotational force transmitting means installed in the body, for transmitting rotational force generated by driving means and movement means which is connected with the rotational force transmitting means, protruded from the body, for moving the body by rotational force transmitted by the rotational force transmitting means.
摘要:
A micro-robot for colonoscope with motor locomotion comprises an information detecting unit for obtaining information of the interior of the colon and a driving unit for generating its own locomotion and moving the information detecting unit without causing any damages to the walls of the colon.
摘要:
Dielectric ceramic compositions for microwave application which are expressed as (1-x)ZnNb2O6- xTiO2 and designed with mole fractions of TiO2 (x=0.2 to 0.8). CuO of 0.5 to 12.0 % by weight of the total weight of the compositions is added to the compositions. At least one additive oxide of 0.05 to 5.0% by weight of the total weight among V2O5, Sb2O5, Bi2O3, B2O3, NiO, WO3, AgNO3, ZnO, and MgO is added to the compositions. They have good sintering and dielectric characteristics and made through simple manufacturing processes, and lower the production costs.