Abstract: A self-starting type axial gap synchronous motor includes a stator in which plural small stators are arranged on the same circumference; disc-shaped rotors in each of which plural permanent magnets facing the stator are arranged on the same circumference; and a shaft coupled to the rotors. Each of the disc-shaped rotors includes a metal frame that is provided so as to surround the plural permanent magnets arranged on the same circumference, and each of the metal frames is configured using a nonmagnetic and conductive material. Accordingly, it is possible to obtain a self-starting type axial gap synchronous motor that can be started by a commercial electric power without using an inverter, and a compressor and a refrigeration cycle apparatus using the same.

Abstract: A capsule medical system is provided with a capsule medical device to be inserted into a subject, at least one electrode pad having a plurality of receiving electrodes, a receiving electrode switching unit, a control unit for controlling operations of the receiving electrode switching unit, and a position detector. The capsule medical device has a biological information acquiring unit for acquiring biological information of the subject, and a transmitting unit for outputting the biological information from a transmitting electrode through a living body. At least one electrode pad detects the biological information by a plurality of receiving electrodes. The receiving electrode switching unit switches a pair of receiving electrodes among the plurality of receiving electrodes. The position detector detects a position of the capsule medical device inside the subject based on the biological information detected by the electrode pad, and position coordinate data of the plurality of receiving electrodes.

Abstract: An image processing system includes an orientation specifying unit that specifies orientation of the body-insertable apparatus at the time of capturing the image data with respect to a reference direction, a rotation correcting unit that performs rotation correction on image data based on the specified orientation, a screen generating unit that generates a screen displaying the image data, an average color bar generating unit that calculates an average color of the image data, generates an image of the calculated average color, and generates an average color bar in which images of the generated average colors are connected in accordance with order of the image data, and an organ image generating unit that generates an organ image obtained by superimposing the images of the average colors generated by the average color bar generating unit. The screen generating incorporates the average color bar and the organ image into the screen.

Abstract: A position detection system that does not require calibration measurement to be performed in advance and reduces the work required for detecting a position and so on is provided.

Abstract: A position detection apparatus and a medical-device-position detection system that have improved position detection accuracy are provided by setting high amplification for the position detection apparatus. The position detection apparatus includes a circuit that has at least one embedded coil (10a) and that is provided inside an object (10) to be detected; a first magnetic-field generating unit (11) for generating a first magnetic field in the region where the embedded coil (10a) is disposed; a magnetic-field detecting unit (5, 12) for detecting an induced magnetic field generated at the embedded coil (10a) by the first magnetic field; and a second magnetic-field generating unit (23) for generating a second magnetic field having a phase substantially opposite to the phase of the first magnetic field.

Abstract: A position detecting device includes a position calculator that performs an optimization convergence calculation using an evaluation function that expresses an error between a measurement value and a theoretical value of magnetic field information of a detection target to calculate at least a position of the detection target; a storage unit that stores a final convergence result of the optimization convergence calculation performed by the position calculator; and a controller that determines whether a result of the optimization convergence calculation converges, suspends the optimization convergence calculation performed by the position calculator when the result does not converge, and performs, after a predetermined time has passed, a returning process of returning a state of the optimization convergence calculation to a converged state by causing the position calculator to perform the optimization convergence calculation based on the final convergence result.

Abstract: A system includes a body-insertable apparatus disposed while introduced in a subject in a detection space, and an external apparatus disposed on the outside of the subject. The body-insertable apparatus includes a first switch for connecting/interrupting a resonance circuit and an oscillation circuit or a ground line. The external apparatus includes a drive coil driving unit for outputting a drive signal having the resonance frequency; a drive coil for generating the drive magnetic field in the detection space in accordance with the drive signal; and a second switch for connecting/interrupting the drive coil driving unit and the drive coil. The second switch connects the drive coil driving unit and the drive coil when the first switch is off, and disconnects them when the first switch is on. The resonance circuit generates the resonance magnetic field in accordance with the induction signal or the drive magnetic field.

Abstract: A position detection system and method in which the accuracy of position measurement of a device is not decreased with changes in the resonant frequency.

Abstract: An in-vivo examination system includes a body-insertable apparatus that moves in a subject; and an external device that acquires information about an inside of the subject. The external device includes a location acquiring unit that acquires a plurality of first locations of the body-insertable apparatus in the subject; a trajectory generating unit that generates a first movement trajectory of the body-insertable apparatus in the subject, based on the plurality of first locations; a trajectory storage unit that stores a second movement trajectory; and a scale adjusting unit that adjusts the first movement trajectory to the second movement trajectory.

Abstract: A current instruction generation unit generates a d-axis current instruction and a q-axis current instruction based on a torque instruction for an AC motor, using a map in which a current instruction capable of lowering noise (vibration and sound noise) (low-noise current instruction) generated from the AC motor is determined in advance for each torque of the AC motor. Then, a signal for driving an inverter is generated based on the generated d-axis current instruction and the q-axis current instruction.

Abstract: An image processing system includes an external device including an orientation specifying unit that specifies orientation of the body-insertable apparatus at the time of capturing the image data with respect to a reference direction, a rotation correcting unit that performs rotation correction on image data received by the input unit based on the orientation specified by the first orientation specifying unit, thereby aligning orientations of a plurality of pieces of image data, a screen generating unit that generates a screen displaying the image data subjected to the rotation correction, an average color bar generating unit that calculates an average color of the image data subjected to the rotation correction, generates an image of the calculated average color, and generates an average color bar in which images of the generated average colors are connected in accordance with order of the image data, and an organ image generating unit that generates an organ image, as an image of an organ in the subject, ob

Abstract: In the rectangular-wave voltage control mode, torque feedback control, in which the voltage phase of the rectangular-wave voltage is adjusted based on the deviation of the torque estimated value from the torque command value, is performed. A torque estimation portion calculates the torque estimated value using the motor currents calculated based on the values detected by a current sensor and a rotational position sensor, as in the case of the PWM control mode. Namely, the same state quantity (quantity detected by the sensors) of the alternating-current motor is used in the motor control in both the rectangular-wave voltage control mode and the PWM control mode.

Abstract: An observation apparatus includes a light radiating unit that radiates a plurality of element lights, each of which has a limited wavelength band, to an observation target; a light detecting unit that detects the plurality of element lights reflected by the observation target in a plurality of patterns by changing a weight for each of the element lights; and a processing unit that performs a procedure of separating a component of each of the element lights from a plurality of detection results of the light detecting unit based on the weight for each of the element lights of the light detecting unit.

Abstract: When an ECU receives a transmission signal having a high level from a transmission, the ECU exerts torque reduction control to reduce a torque control value for a motor generator. Furthermore the ECU sets an optimum (or target) value of a voltage as based on the torque control value and a motor rotation speed and controls an upconverter. Herein, when the transmission is shifting gears, the ECU controls the upconverter to allow the voltage to be constant regardless of whether the torque reduction control is exerted to reduce the torque control value.

Abstract: A system includes a body-insertable apparatus disposed while introduced in a subject in a detection space, and an external apparatus disposed on the outside of the subject. The body-insertable apparatus includes a first switch for connecting/interrupting a resonance circuit and an oscillation circuit or a ground line. The external apparatus includes a drive coil driving unit for outputting a drive signal having the resonance frequency; a drive coil for generating the drive magnetic field in the detection space in accordance with the drive signal; and a second switch for connecting/interrupting the drive coil driving unit and the drive coil. The second switch connects the drive coil driving unit and the drive coil when the first switch is off, and disconnects them when the first switch is on. The resonance circuit generates the resonance magnetic field in accordance with the induction signal or the drive magnetic field.

Abstract: A body-insertable apparatus has a resonance circuit for emitting a resonance magnetic field by being guided by a drive magnetic field received from the outside.

Abstract: When an ECU determines that the motor count of a motor generator exceeds a predetermined limit value, control is effected to set the torque of motor generator to zero. Further, when the ECU determines that motor count exceeds the predetermined limit value, voltage control of inverter input voltage is reduced by a predetermined level.

Abstract: A position detection system and a position detection method in which the accuracy of position measurement of a device is not decreased after a change in the resonant frequency of a magnetic induction coil are provided.

Abstract: A position detecting device includes a position calculator that performs an optimization convergence calculation using an evaluation function that expresses an error between a measurement value and a theoretical value of magnetic field information of a detection target to calculate at least a position of the detection target; a storage unit that stores a final convergence result of the optimization convergence calculation performed by the position calculator; and a controller that determines whether a result of the optimization convergence calculation converges, suspends the optimization convergence calculation performed by the position calculator when the result does not converge, and performs, after a predetermined time has passed, a returning process of returning a state of the optimization convergence calculation to a converged state by causing the position calculator to perform the optimization convergence calculation based on the final convergence result.

Abstract: The position or the direction of a first marker which produces an alternating magnetic field by means of an external power supply is detected precisely even if the first marker coexists with a second marker which includes a resonance circuit having a resonance frequency the same as or close to the frequency of the alternating magnetic field.