Abstract: An ultrasound probe includes: a drive motor of an outer rotor type; an ultrasound element configured to transmit ultrasound waves, and receive ultrasound waves; and a rotary transformer configured to transfer a signal of the ultrasound element in a non-contact manner, the rotary transformer being disposed at an end of the drive motor, wherein the drive motor includes: a stator including a stator core and a motor coil; and a rotor including a rotor core and a motor magnet, the ultrasound element is attached to the rotor, the rotary transformer includes a secondary transformer disposed on the rotor, and a primary transformer disposed on the opposite side from the secondary transformer, the prmary transformer and the secondary transformer each include a transformer core, and a transformer coil disposed on the transformer core, and at least one of the primary transformer and the secondary transformer includes a coil holding portion.

Abstract: A rotating electrical machine has a rotor having a field winding and a stator having an armature winding. A control device adjusts a field current flowing in the field winding and an armature current flowing in the armature winding. The armature current flowing in the armature winding is expressed by using a current vector having a d-axis current and a q-axis current in a d-q coordinate system. In a case in which the control device increases the d-axis current to generate a magnetic flux in a direction which is opposite to a direction to generate a magnetic flux by a field current, the control device gradually reduces the d-axis current during a predetermined period of time after increasing the d-axis current in the direction opposite to the direction to generate the magnetic flux by the field current.

Abstract: There is provided a control unit (40) applied to a motor (10) that includes a rotor (12) having a field winding (11) and a rotor (13) having armature winding groups (10a, 10b) to control a field current passed through the field winding. Each of the armature winding groups is applied with a prescribed voltage. The field current is controlled so as to be a minimum field current value If_min with which a deviation between an amplitude of an induced voltage generated in the armature winding groups by rotation of the rotor, and an amplitude of the voltage applied to the armature winding groups becomes equal to or smaller than a prescribed value.

Abstract: In an apparatus for controlling a rotary electric machine, a voltage applier applies a high-frequency voltage to one of the field winding and the armature winding. One of a field winding and an armature winding is defined as an input winding, and the other thereof is defined as an output winding. A current detector detects a high-frequency current flowing through the output winding based on the applied high-frequency voltage. The high-frequency current includes therein information associated with the rotational position of a target magnetic pole of the rotor as a predetermined one of the magnetic poles. An estimator estimates the rotational position of the target magnetic pole of the rotor according to the high-frequency current detected by the current detector.

Abstract: An ultrasound probe which is connected to an ultrasound diagnosis apparatus includes an acoustic element for converting an electric signal and an ultrasound to each other, an electric signal processing circuit electrically connected to the acoustic element, a case for storing the acoustic element and the electric signal processing circuit, an acoustic element board for electrically connecting the acoustic element to the electric signal processing circuit, and a partition part which is arranged to contact with the case and separates the acoustic element and the electric signal processing circuit. A space on the side of the acoustic element in the case separated by the partition part is filled with a first material having lower thermal conductivity than that of a material for forming an inner wall surface of the case. Accordingly, the heat generated by a circuit unit such as the electric signal processing circuit can be more efficiently dissipated.

Abstract: In a system for controlling a controlled variable of a rotary machine having plural-phase input terminals of the rotary machine in which plural-phase AC power is applied from an AC power applying module to the input terminals, a command-voltage setting module sets, based on a request value for the controlled variable, plural-phase AC command voltages for the plural-phase AC power as a feedforward manipulated variable. A current obtaining module obtains plural-phase AC currents flowing in the respective plural-phase input terminals of the rotary machine. An amplitude correcting module corrects the amplitude of at least one of the plural-phase AC command voltages based on the magnitudes of the plural-phase AC currents.

Abstract: In a system, a triangular carrier wave is compared in magnitude with first and second two-phase modulated command signals. Based on a result of the comparison, on-off operations of the high- and low-side switching elements of two phases of a three-phase inverter corresponding to the first and second two-phase modulated command signals are performed while the high- and low-side switching elements of the remaining phase of the three-phase inverter is fixed to be on or off. A value of a current flowing through a first or second bus connected between a DC power source and the three-phase inverter is measured when a local peak of the triangular carrier signal occurs while none of the high-side switching elements of all the three-phases are on or none of the low-side switching elements of all the three-phases are on.

Abstract: [Problem] To provide a diphenyl sulfide derivative which is useful as a pharmaceutical product that has excellent S1P3 antagonist activity. [Solution] The inventors have discovered that a diphenyl sulfide derivative represented by general formula (1) (wherein R1 represents an alkoxy group having 1-6 carbon atoms, R2 represents a propyl group or an allyl group, X represents methylene or an oxygen atom, and Z represents a halogen atom) has excellent S1P3 antagonist activity as a result of extensive researches for the production of a compound that has S1P3 antagonist activity.

Abstract: An ultrasonic probe has an organism contact portion that is shaped for use along a comparatively large curvature and can easily be used while closely contacting an organism. The probe includes a first cylinder pulley secured to a probe casing, an arm secured to a motor spindle extending through the first pulley, and a second cylinder pulley rotatably arranged on the opposite side and coupled to the first pulley by a wire. The second pulley is equipped with a slider shaft that is arranged to be extendable by a slider bearing. The slider shaft is equipped with a roller contacting a guide rail of the casing. An ultrasonic element is attached to the distal end of the slider shaft to provide the telescopic structure for the slider shaft. In this manner, the size of a scanning mechanism, for oscillating the ultrasonic element along a large curvature, is reduced.

Abstract: A deployable antenna which has a larger aperture diameter by four-side links provided in at least three stages and which includes: six deployment link mechanisms (20) arranged radially from a central shaft so as to support an outer edge portion of a flexible reflector mirror surface; and one deployment driving mechanism (30) arranged at a lower portion of a center of arrangement of the six deployment link mechanisms, for unfolding the six deployment link mechanisms. Each of the six deployment link mechanisms includes a first four-side link (5), a second four-side link (6), and a third four-side link (7) arranged in an order from a position of the central shaft, around which the six deployment link mechanisms are arranged, toward an outer side of the each of the six deployment link mechanisms so that the each of the six deployment link mechanisms is structured to be foldable in three stages.

Abstract: In a control apparatus of a rotating device, a voltage command value setting section sets terminal command values on the basis of a command value of a control amount of the rotating device. Individual correcting sections calculate feedback operation amounts on the basis of history information of electric currents flowing in respective terminals of the rotating device and corrects the terminal voltage command values with the feedback operation amounts. A prohibiting section prohibits difference corresponding amounts, which correspond to differences of the feedback operation amounts and an average of the feedback operation amounts, from being reflected in correcting the terminal voltage command values with maintaining polarities when a determining section determines that it is a switching time from one of a power-running control and a regeneration control to the other.

Abstract: A current sensor detects a bus current flowing to an inverter. An estimation section uses actual currents id and id outputted from a d-q conversion section as initial values, estimates currents flowing in a motor/generator and calculates estimated currents ide and iqe. A UVW conversion section converts the estimated current ide and iqe to three phase currents. A selection section inputs, as currents flowing in each phase of the motor/generator, three out of outputs of the UVW conversion section and the bus current. The bus current is used as the current of one phase, if a voltage vector representing an operation state of the inverter is an effective voltage vector.

Abstract: In a system, a triangular carrier wave is compared in magnitude with first and second two-phase modulated command signals. Based on a result of the comparison, on-off operations of the high- and low-side switching elements of two phases of a three-phase inverter corresponding to the first and second two-phase modulated command signals are performed while the high- and low-side switching elements of the remaining phase of the three-phase inverter is fixed to be on or off. A value of a current flowing through a first or second bus connected between a DC power source and the three-phase inverter is measured when a local peak of the triangular carrier signal occurs while none of the high-side switching elements of all the three-phases are on or none of the low-side switching elements of all the three-phases are on.

Abstract: The invention provides an ultrasonic probe having a frame to constitute a part of a cubicle, a motor fixed on the frame, a first arm with one end fixed on a rotating shaft of the motor, and a second arm with one end rotatably coupled with the other end of the first arm via a coupling shaft and with the other end having an ultrasonic element mounted thereon. The second arm has a lengthwise long groove and is slidably engaged with the fixed shaft of the frame in the direction of length. The length from an end of the second arm where the ultrasonic element is mounted on the coupling shaft is designed to be longer than the length from the rotating shaft to the coupling shaft, and further, to be longer than the length from the rotating shaft to the fixed shaft.

Abstract: In a control apparatus of a rotating device, a voltage command value setting section sets terminal command values on the basis of a command value of a control amount of the rotating device. Individual correcting sections calculate feedback operation amounts on the basis of history information of electric currents flowing in respective terminals of the rotating device and corrects the terminal voltage command values with the feedback operation amounts. A prohibiting section prohibits difference corresponding amounts, which correspond to differences of the feedback operation amounts and an average of the feedback operation amounts, from being reflected in correcting the terminal voltage command values with maintaining polarities when a determining section determines that it is a switching time from one of a power-running control and a regeneration control to the other.

Abstract: Provided are diphenyl sulfide derivatives which have excellent S1P3 antagonistic activity and are useful as drugs. Intensive studies have been made for the purpose of creating a compound having S1P3 antagonistic activity. As a result of the intensive studies, it has been found that diphenyl sulfide derivatives represented by general formula (1) have excellent S1P3 antagonistic activity. In general formula (1), R1 is a hydrogen atom or the like; R2 is an optionally substituted alkyl group having 1 to 6 carbon atoms, or the like; X is a methylene group which may be substituted with one or two fluorine atoms, or the like; Y is a hydrogen atom or the like; and Z is a halogen atom.

Abstract: In a system for controlling a controlled variable of a rotary machine having plural-phase input terminals of the rotary machine in which plural-phase AC power is applied from an AC power applying module to the input terminals, a command-voltage setting module sets, based on a request value for the controlled variable, plural-phase AC command voltages for the plural-phase AC power as a feedforward manipulated variable. A current obtaining module obtains plural-phase AC currents flowing in the respective plural-phase input terminals of the rotary machine. An amplitude correcting module corrects the amplitude of at least one of the plural-phase AC command voltages based on the magnitudes of the plural-phase AC currents.

Abstract: [Problem] To provide a diphenyl sulfide derivative which is useful as a pharmaceutical product that has excellent S1P3 antagonist activity. [Solution] The inventors have discovered that a diphenyl sulfide derivative represented by general formula (1) (wherein R1 represents an alkoxy group having 1-6 carbon atoms, R2 represents a propyl group or an allyl group, X represents methylene or an oxygen atom, and Z represents a halogen atom) has excellent S1P3 antagonist activity as a result of extensive researches for the production of a compound that has S1P3 antagonist activity.

Abstract: A deployable antenna reflector includes a surface cable network formed of a plurality of cables coupled to each other in a mesh pattern. The surface cable network includes at least one rigid rod member that reduces a maximum tensile force caused in the surface cable network.

Abstract: A current sensor detects a bus current flowing to an inverter. An estimation section uses actual currents id and id outputted from a d-q conversion section as initial values, estimates currents flowing in a motor/generator and calculates estimated currents ide and iqe. A UVW conversion section converts the estimated current ide and iqe to three phase currents. A selection section inputs, as currents flowing in each phase of the motor/generator, three out of outputs of the UVW conversion section and the bus current. The bus current is used as the current of one phase, if a voltage vector representing an operation state of the inverter is an effective voltage vector.