Abstract: Disclosed are a device and a method for controlling a motor. According to a specific embodiment of the present disclosure, an input shaft of a motor is provided with a low-resolution absolute position detector and an output shaft of the motor is provided with a low-resolution absolute position detector having a resolution greater than or equal to a reduction gear ratio. An initial offset and an offset are defined accordingly, and a high-resolution output shaft absolute position is derived from a relational expression, which is defined by an input shaft absolute position received at a predetermined time interval, a derived offset, an output shaft absolute position, and the reduction gear ratio, such that it is possible to easily detect the high-resolution output shaft absolute position by using a low-price absolute position detector without the modification or addition of an actuator.

Abstract: Disclosed are a device and a method for controlling a motor. According to a specific embodiment of the present disclosure, an input shaft of a motor is provided with a low-resolution absolute position detector and an output shaft of the motor is provided with a low-resolution absolute position detector having a resolution greater than or equal to a reduction gear ratio. An initial offset and an offset are defined accordingly, and a high-resolution output shaft absolute position is derived from a relational expression, which is defined by an input shaft absolute position received at a predetermined time interval, a derived offset, an output shaft absolute position, and the reduction gear ratio, such that it is possible to easily detect the high-resolution output shaft absolute position by using a low-price absolute position detector without the modification or addition of an actuator.

Abstract: A cam-locking dissimilar material sleeve installed on an outer surface of an expansion shaft of an inspection robot inserted into a heat transfer tube of a steam generator for generating nuclear power to inspect the heat transfer tube, the cam-locking dissimilar material sleeve includes: a tension part formed of steel and including a plurality of upwardly opened slits and a plurality of downwardly opened slits alternately formed in zigzags and legs formed between the upwardly opened slits and the downwardly opened slits; a plurality of upper contact parts formed of a synthetic resin through injection-molding to surround an upper end of the tension part and surround parts located between the upwardly opened slits; and a plurality of lower contact parts formed of a synthetic resin through injection-molding to surround a lower end of the tension part and surround parts located between the downwardly opened slits.

Abstract: A heat tube inspection cable and a method of analyzing an insertion force of the cable are disclosed. The heat tube inspection cable includes a sensor unit configured to detect a defect in a heat tube, a plurality of segment units each configured to comprise a body part and a wheel part rotatably connected to the body part, a signal cable configured to helically pass through the body part of each of the plurality of segment units to transmit electric signal from the sensor unit, and a wire configured to pass through the body part of each of the plurality of segment units to keep the linear configuration of the plurality of segment units like a bead necklace and to provide axial and bending strength.

Abstract: A stereo x-ray inspection apparatus and a method for forming a three-dimensional image through volume reconstruction of an image acquired from the same are disclosed. The apparatus includes one x-ray generator and two detectors to acquire two images. The x-ray generator and detectors are arranged in the form of a right-angled triangle, to easily achieve mathematical development and analysis. One of the detectors, which does not just oppose the x-ray generator, is movable and rotatable, to acquire images under the condition that only one detector is moved in accordance with the size of an object, and thus to simplify control operation for the apparatus, so that a more accurate image from an object moving at high speed is acquired.

Abstract: Disclosed is a cam-locking dissimilar material sleeve installed on an outer surface of an expansion shaft of an inspection robot inserted into a heat transfer tube of a steam generator for generating nuclear power to inspect the heat transfer tube, the cam-locking dissimilar material sleeve including: a tension part formed of steel and including a plurality of upwardly opened slits and a plurality of downwardly opened slits alternately formed in zigzags and legs formed between the upwardly opened slits and the downwardly opened slits; a plurality of upper contact parts formed of a synthetic resin through injection-molding to surround an upper end of the tension part and surround parts located between the upwardly opened slits; and a plurality of lower contact parts formed of a synthetic resin through injection-molding to surround a lower end of the tension part and surround parts located between the downwardly opened slits.

Abstract: A heat tube inspection cable and a method of analyzing an insertion force of the cable are disclosed. The heat tube inspection cable includes a sensor unit configured to detect a defect in a heat tube, a plurality of segment units each configured to comprise a body part and a wheel part rotatably connected to the body part, a signal cable configured to helically pass through the body part of each of the plurality of segment units to transmit electric signal from the sensor unit, and a wire configured to pass through the body part of each of the plurality of segment units to.