Abstract: In a driving unit of an electromechanical motor unit, a semiconductor chip and a smoothing capacitor are joined to a second main surface of a substrate having a first main surface and the second main surface. The semiconductor chip includes a first end portion facing the second main surface, and a second end portion on the opposite side of the semiconductor chip from the first end portion. The smoothing capacitor includes a third end portion facing the second main surface, and a fourth end portion on the opposite side of the smoothing capacitor from the third end portion. The semiconductor chip is thermally connected to a bottom wall portion of a cover member, at a position closer to the second main surface than the fourth end portion is. The bottom wall portion is thermally connected to the motor housing via a sidewall portion of the cover member.

Abstract: An optical nondestructive testing method includes: a laser emitting step involving emitting a heating laser from a laser output device such that the intensity of the heating laser applied to a measurement point changes sinusoidally; a laser intensity measuring step involving measuring the intensity of the heating laser by a phase difference detector; an infrared radiation intensity measuring step involving measuring, by the phase difference detector, the intensity of infrared radiation radiating from the measurement point; a phase difference measuring step involving determining, by the phase difference detector, a phase difference between the intensity of the heating laser and the intensity of the infrared radiation, and outputting the phase difference determined to a determiner from the phase difference detector; and a connection area calculating step involving determining, by the determiner, a connection area in accordance with the phase difference and phase difference-connection area correlation informatio

Abstract: In a driving unit of an electromechanical motor unit, a semiconductor chip and a smoothing capacitor are joined to a second main surface of a substrate having a first main surface and the second main surface. The semiconductor chip includes a first end portion facing the second main surface, and a second end portion on the opposite side of the semiconductor chip from the first end portion. The smoothing capacitor includes a third end portion facing the second main surface, and a fourth end portion on the opposite side of the smoothing capacitor from the third end portion. The semiconductor chip is thermally connected to a bottom wall portion of a cover member, at a position closer to the second main surface than the fourth end portion is. The bottom wall portion is thermally connected to the motor housing via a sidewall portion of the cover member.

Abstract: An optical nondestructive testing method includes: a laser emitting step involving emitting a heating laser from a laser output device such that the intensity of the heating laser applied to a measurement point changes sinusoidally; a laser intensity measuring step involving measuring the intensity of the heating laser by a phase difference detector; an infrared radiation intensity measuring step involving measuring, by the phase difference detector, the intensity of infrared radiation radiating from the measurement point; a phase difference measuring step involving determining, by the phase difference detector, a phase difference between the intensity of the heating laser and the intensity of the infrared radiation, and outputting the phase difference determined to a determiner from the phase difference detector; and a connection area calculating step involving determining, by the determiner, a connection area in accordance with the phase difference and phase difference-connection area correlation informatio

Abstract: An optical non-destructive inspection method includes: heating including setting a measurement spot on a surface of a workpiece and irradiating the measurement spot with heating laser light using a heating laser light source, heat ray detectors, and a controller; acquiring a temperature rise property that is a temperature rise state of the measurement spot according to a heating time by detecting a heat ray radiated from the measurement spot to determine a temperature at the measurement spot; and determining whether or not a pressure contact state at pressure contact portions, which include a contact area and a contact pressure, is appropriate based on the temperature rise property.

Abstract: In an optical non-destructive inspection method which can perform inspection accurately in a short time. In the method, a heating laser beam source, at least one infrared detector, a control unit, and a storage unit are used. The storage unit stores a parameter state-time constant characteristic in which a parameter corresponding to a state of the measurement object is correlated with a time constant indicating the curve shape of the temperature rise characteristic that varies depending on the state of the parameter. The control unit determines the time constant based on the curve shape of the temperature rise characteristic, which extends from a heating start time point to a time point at which a saturated temperature is reached, and determines the state of the parameter of the measurement object based on the determined time constant and the parameter state-time constant characteristic.

Abstract: There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, an infrared detector, an emitted-infrared guide unit, first and second correcting laser beam source, first and second correcting laser beam guide units, first and second correcting laser detectors, first and second reflected laser beam guide units, and a control unit. The control unit controls the heating laser beam source and the first and second correcting laser beam sources, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a detection signal from the infrared detector and detection signals from the first and second correcting laser detectors, and determines a state of a measurement object based on the measured temperature rise characteristic.

Abstract: There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, an infrared detector, an emitted-infrared guide unit, first and second correcting laser beam source, first and second correcting laser beam guide units, first and second correcting laser detectors, first and second reflected laser beam guide units, and a control unit. The control unit controls the heating laser beam source and the first and second correcting laser beam sources, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a detection signal from the infrared detector and detection signals from the first and second correcting laser detectors, and determines a state of a measurement object based on the measured temperature rise characteristic.

Abstract: There are provided an optical non-destructive inspection apparatus that can inspect a measurement object such as a wire bonding portion. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, a first infrared detector, a second infrared detector, an emitted-infrared selective guide unit, and a control unit. The control unit controls the heating laser beam source, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a ratio between a detected value from the first infrared detector and a detected value from the second infrared detector, determines a state of a measurement object based on the temperature rise characteristic, and changes at least one of wavelengths of infrared light beams guided to the first infrared detector and the second infrared detector based on a measured temperature during measurement.

Abstract: An electric power steering apparatus (1) comprises a control device (12), which controls driving of an electric motor (18) based on the detection signals from a rotational position-detecting sensor (72; 72A), which detects the rotational position of the rotor (64) of the electric motor (18), and a steering status detecting sensor (11; 11A). The control device (12) is housed in a housing (100) that is partitioned by a first housing (23), which is at least a portion of the motor housing (25) for the electric motor (18), and a second housing (24; 24A; 24B) that touches the first housing (23). At least one of the rotational position-detecting sensor (72; 72A) and steering state detecting sensor (11; 11A) is connected to the control device (12) by means of only a signal wire (81; 134) inside the first housing (23) or the second housing (24; 24A; 24B).

Abstract: A motor control device for driving a brushless motor includes a current detecting unit which detects respective phase currents which flow into the brushless motor; a control calculation unit which calculates instruction values showing respective phase voltages to be applied to the brushless motor, and outputs the instruction values as phase voltage instruction values; a phase resistance calculation unit which calculates respective phase resistance values based on detection values of the respective phase currents detected by the current detecting unit, and the instruction values of the respective phase voltages applied to the brushless motor at the time of the detection of the detection values; a correction unit which corrects the phase voltage instruction values according to the respective phase resistance values calculated by the phase resistance calculation unit; and a driving unit which drives the brushless motor based on the phase voltage instruction values after correction by the correction unit.

Abstract: An angle calculator detects a rotation angle ?a of a rotor. A three-phase/d-q axis converter outputs detected current id, iq on d-q coordinate axes by making a conversion, based on a corrected detection angle ?c obtained by adding or subtracting an amount of detection deviation from a time point of current detection to or from the detection angle ?a. A command current calculator calculates command current id*, iq* on the d-q coordinate axes based on a steering torque T and a speed S. A feedback controller calculates command voltages vd, vq on the d-q coordinate axes based on the command current id*, iq* and the detected current id, iq. A d-q axis/three-phase converter converts the command voltages vd, vq into three-phase command voltages, based on a corrected detection angle ?b obtained by adding an amount of detection deviation from a time point when a motor is driven to the detection angle ?a. The deviation can be eliminated by the command voltages, and the motor can be driven with high precision.

Abstract: A multilayer circuit substrate includes: a laminated circuit portion in which conductive layers and resin insulating layers are alternately laminated; and a metal substrate portion, wherein the laminated circuit portion is fixed to the metal substrate portion so that at least part of a lower surface of the laminated circuit portion is in contact with at least part of an upper surface of the metal substrate portion. An electronic component is mounted on the metal substrate portion.

Abstract: Disclosed is a vehicle steering apparatus (1; 301) equipped with a control device (12; 322) which controls the actuation of an electric motor (18; 317). First and second housings (23, 24 325, 312), which are in contact with each other, partition off an accommodation chamber (100; 324) which contains the control device (12; 322). The first housing (23; 325) is at least one part of the motor housing (25; 323). The first housing (23; 325) includes a first interior wall surface (101; 401) which partially partitions the accommodation chamber (100; 324). The second housing (24; 312) includes a second interior wall surface (102; 402) which partially partitions the accommodation chamber (100; 324). The first and the second interior wall surfaces (101, 102; 401, 402) are opposite each other with respect to the axial direction (X1) of a rotatable shaft (37; 352) of an electric motor (18; 317).

Abstract: In a motor control device, a control calculation unit obtains a phase voltage instruction value. A current detecting unit detects an electric current which flows into the brushless motor. A rotational position detecting unit detects the rotational position of a rotor in the brushless motor. A correction unit corrects the phase voltage instruction value based on the detection results of the current detecting unit and the rotational position detecting unit so that a dependency of a ratio on an electric angle shown by a secondary harmonic component of the ratio concerning the electric angle of the brushless motor. The ratio is a ratio of a q-axis or d-axis component of the electric current, which flows into the brushless motor, to a q-axis or d-axis instruction value. A driving unit drives the brushless motor based on the phase voltage instruction value after the correction by the correction unit.

Abstract: A vehicle steering apparatus (1) comprises: a control device (12) which controls an actuation of an electric motor (18); a control housing (H) which partitions an accommodation chamber (100) which accommodates the control device (12); an adjacent housing (27, 28; 280; 35A) which is adjacent to the control housing (H); and a heat-conducting member (96; 96A; 96B; 96C; 96D; 96E). The adjacent housing (27, 28; 280; 35A) is opposite to the electric motor (18) with the control housing (H) interposed therebetween. The heat-conducting element (96; 96A; 96B; 96C; 96D; 96E) comprises: an adjacent section (97) which is adjacent to a heat-generating element (83) of the control device (12) so that heat can be conducted; and a connected section (98; 98A; 98B; 98C; 98D; 98E) that is connected to the adjacent housing (27, 28; 280; 35A) so that heat can be conducted.

Abstract: If the magnitude of a command voltage vector is greater than a predetermined voltage value indicated by a voltage limit circle, the magnitude of a voltage vector, which corresponds to a q-axis current and which forms the command voltage vector, is adjusted so that the magnitude of the command voltage vector is equal to or less than the predetermined voltage value. Then a q-axis current estimated value is obtained based on i) the ratio of the magnitude of the voltage vector from the q-axis current after adjustment to the magnitude of the voltage vector from the q-axis current before adjustment, and ii) a q-axis current command value.

Abstract: In a motor control device, a control calculation unit obtains a phase voltage instruction value. A current detecting unit detects an electric current which flows into the brushless motor. A rotational position detecting unit detects the rotational position of a rotor in the brushless motor. A correction unit corrects the phase voltage instruction value based on the detection results of the current detecting unit and the rotational position detecting unit so that a dependency of a ratio on an electric angle shown by a secondary harmonic component of the ratio concerning the electric angle of the brushless motor. The ratio is a ratio of a q-axis or d-axis component of the electric current, which flows into the brushless motor, to a q-axis or d-axis instruction value. A driving unit drives the brushless motor based on the phase voltage instruction value after the correction by the correction unit.

Abstract: An angle calculator detects a rotation angle ?a of a rotor. A three-phase/d-q axis converter outputs detected current id, iq on d-q coordinate axes by making a conversion, based on a corrected detection angle ?c obtained by adding or subtracting an amount of detection deviation from a time point of current detection to or from the detection angle ?a. A command current calculator calculates command current id*, iq* on the d-q coordinate axes based on a steering torque T and a speed S. A feedback controller calculates command voltages vd, vq on the d-q coordinate axes based on the command current id*, iq* and the detected current id, iq. A d-q axis/three-phase converter converts the command voltages vd, vq into three-phase command voltages, based on a corrected detection angle ?b obtained by adding an amount of detection deviation from a time point when a motor is driven to the detection angle ?a. The deviation can be eliminated by the command voltages, and the motor can be driven with high precision.

Abstract: Disclosed is a vehicle steering apparatus (1; 301) equipped with a control device (12; 322) which controls the actuation of an electric motor (18; 317). First and second housings (23, 24 325, 312), which are in contact with each other, partition off an accommodation chamber (100; 324) which contains the control device (12; 322). The first housing (23; 325) is at least one part of the motor housing (25; 323). The first housing (23; 325) includes a first interior wall surface (101; 401) which partially partitions the accommodation chamber (100; 324). The second housing (24; 312) includes a second interior wall surface (102; 402) which partially partitions the accommodation chamber (100; 324). The first and the second interior wall surfaces (101, 102; 401, 402) are opposite each other with respect to the axial direction (X1) of a rotatable shaft (37; 352) of an electric motor (18; 317).