Abstract: To determine the state of a subject person with a simple structure, an image determining device includes: an imaging unit that captures an image from a first direction, the image including the subject person; a first detector that detects size information from the image, the size information being about the subject person in the first direction; a second detector that detects position-related information, the position-related information being different from the information detected by the first detector; and a determining unit that determines the state of the subject person, based on a result of the detection performed by the first detector and a result of the detection performed by the second detector.

Abstract: A rotary machine control device includes: a flux estimator that estimates a rotary machine flux; a command amplitude specifier that generates a command amplitude that is an amplitude of a command flux, by executing feedback control using a product of an estimated flux or an estimated magnet flux and a detected current; a command flux specifier that generates the command flux using the command amplitude; and a switcher that controls switching from a current synchronous operation to a flux control operation. When the switcher controls switching to the flux control operation, the flux estimator gives, to the feedback control, an amplitude of the estimated flux estimated before switching to the flux control operation, as an initial value of the command amplitude immediately after switching to the flux control operation.

Abstract: A rotary machine control device includes: a magnetization characteristics determiner that determines a magnet phase of a magnet flux based on an estimated magnetic flux and a detection current, and determines a qm-axis magnetic flux of the estimated magnetic flux, a qm-axis current of the detection current, and a harmonic component of a magnet phase using a dm-qm coordinate system with a dm axis representing the magnet phase and a qm axis representing a phase shifted by 90 degrees from the magnet phase; a ripple compensation determiner that determines a ripple compensation phase using a ripple compensation torque obtained based on the qm-axis current and the harmonic component; a command phase determiner that determines a command phase based on the ripple compensation phase and a torque command; and a command magnetic flux generator that generates a command magnetic flux based on a command amplitude and the command phase.

Abstract: A rotary machine control device includes: a flux estimator that estimates a rotary machine flux; a command amplitude specifier that generates a command amplitude that is an amplitude of a command flux, by executing feedback control using a product of an estimated flux or an estimated magnet flux and a detected current; a command flux specifier that generates the command flux using the command amplitude; and a switcher that controls switching from a current synchronous operation to a flux control operation. When the switcher controls switching to the flux control operation, the flux estimator gives, to the feedback control, an amplitude of the estimated flux estimated before switching to the flux control operation, as an initial value of the command amplitude immediately after switching to the flux control operation.

Abstract: A turbocompressor apparatus includes a turbocompressor including a compressor motor, a lubrication pump including a pump motor, a converter that performs electric power conversion between a voltage of a power source and a direct-current voltage of a direct-current voltage unit in a case where electric power is being supplied from the power source to the turbocompressor apparatus; a first inverter that performs electric power conversion between the direct-current voltage and a first alternating-current voltage vector of the compressor motor; and a second inverter that performs electric power conversion between the direct-current voltage and a second alternating-current voltage vector of the pump motor. The compressor motor generates regenerative electric power by regenerative driving and the pump motor is driven by the regenerative electric power in a case where supply of electric power from the power source to the converter is being cut off.

Abstract: An air cooling unit is an air cooling unit used in a Rankine cycle system and includes an expander and a condenser. The expander recovers energy from a working fluid by expanding the working fluid. The condenser cools the working fluid using air. The air cooling unit includes a heat-transfer reducer that reduces heat transfer between the expander and an air path.

Abstract: In a synchronized playback system, a plurality of synchronized playback apparatuses are connected and perform synchronized playback. Each of the plurality of synchronized playback apparatuses includes a playback device that reproduces a content file which is delivered through a network from a delivery server, in which the content file is stored, and a control device that controls the synchronized playback. One of the plurality of synchronized playback apparatuses causes the control device to operate in a case in which the synchronized playback is performed and control the synchronized playback of a plurality of synchronized playback devices, which participate in a synchronized playback group, of the playback devices which are included in the plurality of respective synchronized playback apparatuses.

Abstract: A combined heat and power system according the present disclosure includes a Rankine cycle apparatus including an evaporator that heats a working fluid by heat exchange between the working fluid and a heat source medium, an expansion machine that converts expansion power of the working fluid into rotational power, and a condenser that cools the working fluid by heat exchange between the working fluid and a heat medium, and a thermal circuit for using the heat medium heated by the condenser. An expansion volume ratio of the expansion machine is equal to or less than an expansion ratio in a theoretical Rankine cycle determined based on a state of a temperature and a pressure of the working fluid at a discharge port of the expansion machine and a state of a temperature and a pressure of the working fluid at a suction port of the expansion machine.

Abstract: In a synchronized playback system, a plurality of synchronized playback apparatuses are connected and perform synchronized playback. Each of the plurality of synchronized playback apparatuses includes a playback device that reproduces a content file which is delivered through a network from a delivery server, in which the content file is stored, and a control device that controls the synchronized playback. One of the plurality of synchronized playback apparatuses causes the control device to operate in a case in which the synchronized playback is performed and control the synchronized playback of a plurality of synchronized playback devices, which participate in a synchronized playback group, of the playback devices which are included in the plurality of respective synchronized playback apparatuses.

Abstract: An air cooling unit is an air cooling unit used in a Rankine cycle system and includes an expander and a condenser. The expander recovers energy from a working fluid by expanding the working fluid. The condenser cools the working fluid using air. The air cooling unit includes a heat-transfer reducer that reduces heat transfer between the expander and an air path.

Abstract: A permanent magnet synchronous machine includes a rotor including a core body and an overhang protruding further in an axial direction than a core of a stator. An end surface of the core body includes an N-region disposed on a north pole and an S-region disposed on a south pole. The overhang includes first permanent magnets arranged along an outer edge of the end surface with distances therebetween and a plurality of second permanent magnets disposed on the end surface and adjacent to the first permanent magnets. The first permanent magnets include at least one of a permanent magnet comprising a north pole facing the N-region and a permanent magnet comprising a south pole facing the S-region. The second permanent magnets are provided in the configuration which causes the second permanent magnets to generate a magnetic flux extending from the S-region toward the N-region.

Abstract: A permanent magnet synchronous machine includes a rotor including a core body and an overhang protruding further in an axial direction than a core of a stator. An end surface of the core body includes an N-region disposed on a north pole and an S-region disposed on a south pole. The overhang includes first permanent magnets arranged along an outer edge of the end surface with distances therebetween and a plurality of second permanent magnets disposed on the end surface and adjacent to the first permanent magnets. The first permanent magnets include at least one of a permanent magnet comprising a north pole facing the N-region and a permanent magnet comprising a south pole facing the S-region. The second permanent magnets are provided in the configuration which causes the second permanent magnets to generate a magnetic flux extending from the S-region toward the N-region.

Abstract: An air cooling unit is an air cooling unit used in a Rankine cycle system and includes an expander and a condenser. The expander recovers energy from a working fluid by expanding the working fluid. The condenser cools the working fluid using air. The air cooling unit includes a heat-transfer reducer that reduces heat transfer between the expander and an air path.

Abstract: A turbocompressor apparatus includes a turbocompressor including a compressor motor, a lubrication pump including a pump motor, a converter that performs electric power conversion between a voltage of a power source and a direct-current voltage of a direct-current voltage unit in a case where electric power is being supplied from the power source to the turbocompressor apparatus; a first inverter that performs electric power conversion between the direct-current voltage and a first alternating-current voltage vector of the compressor motor; and a second inverter that performs electric power conversion between the direct-current voltage and a second alternating-current voltage vector of the pump motor. The compressor motor generates regenerative electric power by regenerative driving and the pump motor is driven by the regenerative electric power in a case where supply of electric power from the power source to the converter is being cut off.

Abstract: A Rankine cycle device in the present disclosure includes an evaporator as a heater, an expander, a cooler, a first temperature sensor, a second temperature sensor, and a control device. The first temperature sensor detects a temperature of the working fluid flowing from an outlet of the heater to an inlet of the expander in the circuit of the working fluid. The second temperature sensor detects a temperature of the working fluid flowing from an outlet of the expander to an inlet of the cooler. The controller controls a number of rotation of the expander based on a difference between a detected temperature of the first temperature sensor and a detected temperature of the second temperature sensor.

Abstract: A semiconductor laser module includes: a semiconductor laser element emitting a laser light; an optical fiber, into which the laser light emitted from the semiconductor laser element is incident, guiding the laser light; and an optical-fiber-holding unit having a fixing agent and holding the optical fiber, the fixing agent being for fixing the optical fiber. The fixing agent is provided at an area in which a power of a leakage light of the laser light having been incident into the optical fiber and then emitted to outside the optical fiber is low.

Abstract: An optical element module includes a casing having a bottom plate, a temperature-adjusting unit being mounted on the bottom plate in the casing and having at least a lower layer portion and an upper layer portion positioned above the lower layer portion, a support member mounted on the temperature-adjusting unit in the casing, and a semiconductor laser element being mounted on the support member and outputting a laser light to a forward side. The upper layer portion of the temperature-adjusting unit projects at a backward side of the semiconductor laser element relative to the lower layer portion.

Abstract: In a synchronized playback system, a plurality of synchronized playback apparatuses are connected and perform synchronized playback. Each of the plurality of synchronized playback apparatuses includes a playback device that reproduces a content file which is delivered through a network from a delivery server, in which the content file is stored, and a control device that controls the synchronized playback. One of the plurality of synchronized playback apparatuses causes the control device to operate in a case in which the synchronized playback is performed and control the synchronized playback of a plurality of synchronized playback devices, which participate in a synchronized playback group, of the playback devices which are included in the plurality of respective synchronized playback apparatuses.

Abstract: A power generation control system includes a converter and a controller. The converter controls a generator of a Rankine cycle system, the Rankine cycle system including an expander, the generator, which is interconnected to the expander, a pump which feeds a working fluid, and an evaporator which evaporates a working fluid. The controller causes the converter to execute, in at least one of a startup operation and a shutdown operation of the Rankine cycle system, first control in at least one of a startup operation and a shutdown operation of the Rankine cycle system such that the expander is prevented from expanding a working fluid if the working fluid at an outlet of the evaporator contains a liquid component while the pump is operating.

Abstract: A semiconductor laser module includes: a semiconductor laser element emitting a laser light; an optical fiber, into which the laser light emitted from the semiconductor laser element is incident, guiding the laser light; and an optical-fiber-holding unit having a fixing agent and holding the optical fiber, the fixing agent being for fixing the optical fiber. The fixing agent is provided at an area in which a power of a leakage light of the laser light having been incident into the optical fiber and then emitted to outside the optical fiber is low.