Abstract: A fiber structure includes first and second optical fibers disposed such that tip portions thereof butt and a sheet-shaped saturable absorber sandwiched between the tip portion of the first optical fiber and the tip portion of the second optical fiber. Each of the tip portions of the first optical fiber and the second optical fiber has a core, a cladding provided around the core, and a ferrule provided around the cladding. The tip portion of the first optical fiber has a protruding shape protruding to a tip side. The saturable absorber has an adhering part at least adhering to the core of the first optical fiber and a non-adhering part present around the adhering part and not adhering to the tip portion of the first optical fiber.

Abstract: A fiber laser device includes: a housing; a first optical element configured to include a first fiber and a first fiber connector; and a second optical element configured to include a second fiber and a second fiber connector. The first optical element and the second optical element are optically connectable via the first fiber connector and the second fiber connector, at least a part of the first optical element is housed in a module housing, an opening is formed in a wall portion of the housing, the module housing is detachably attached inside the housing through the opening, and the end portion of the first fiber and the first fiber connector are provided to project from the module housing at one end portion of the module housing.

Abstract: A fiber laser device includes: a housing; a first optical element configured to include a first fiber and a first fiber connector; a second optical element configured to include a second fiber and a second fiber connector; and a movable holder configured to hold the second fiber connector and be movable so that an orientation of the second fiber connector changes between a first orientation and a second orientation. The first optical element and the second optical element are optically connectable via the first fiber connector and the second fiber connector, a first opening is formed in a wall portion of the housing, the first orientation is an orientation when the first optical element and the second optical element are optically connected, and the second orientation is an orientation in which an end surface of the second fiber is exposed through the first opening.

Abstract: A light source device includes: a fiber laser including an excitation light source and configured to output pulsed light generated according to excitation light from the excitation light source; a fiber amplifier configured to receive the pulsed light output from the fiber laser, amplify the pulsed light, and output the amplified pulsed light, a wavelength shift fiber configured to receive the pulsed light output from the fiber amplifier, shift a wavelength of the pulsed light, and output the pulsed light; an output fiber configured to receive the pulsed light output from the wavelength shift fiber, and output the pulsed light to an outside; a light detection element configured to detect, in the output fiber, the pulsed light having passed through at least the wavelength shift fiber; and a control unit configured to control a drive current of the excitation light source.

Abstract: A curvature adjustment method is applied to an arc-shaped stator vane segment having a plurality of stator blades disposed side by side on the outer peripheral side of an arc-shaped inner coupling member. In the curvature adjustment method, a jig preparation step, a jig mounting step, and a curvature adjustment step are executed. In the jig preparation step, a curvature adjustment jig and a distance adjustment mechanism are prepared. In the jig mounting step, with the distance adjustment mechanism placed on the inner peripheral side of the inner coupling member, a first end is fixed at a first position of the inner coupling member, and a second end is fixed at a second position of the inner coupling member. In the curvature adjustment step, the distance adjustment mechanism is operated after the jig mounting step to change the distance between the first and second ends of the curvature adjustment jig.

Abstract: A curvature adjustment method is applied to an arc-shaped stator vane segment having a plurality of stator blades disposed side by side on the outer peripheral side of an arc-shaped inner coupling member. In the curvature adjustment method, a jig preparation step, a jig mounting step, and a curvature adjustment step are executed. In the jig preparation step, a curvature adjustment jig and a distance adjustment mechanism are prepared. In the jig mounting step, with the distance adjustment mechanism placed on the inner peripheral side of the inner coupling member, a first end is fixed at a first position of the inner coupling member, and a second end is fixed at a second position of the inner coupling member. In the curvature adjustment step, the distance adjustment mechanism is operated after the jig mounting step to change the distance between the first and second ends of the curvature adjustment jig.

Abstract: A hydrogen-system control device according to the present embodiment is a control system for a hydrogen system that produces hydrogen: a first setter; a second setter configured to set an actual power consumption amount obtained by reducing a reduced power amount from the first power consumption amount in advance, when the demand response for reducing the first power consumption amount in the request period is requested the device comprising: and a controller configured to control a power amount of the second power in the request period based on the actual power consumption amount. The second setter is configured to set the actual power consumption amount in a range in which the hydrogen system is able to achieve a target amount of hydrogen to be produced in a first period that includes the request period and is longer than the request period.

Abstract: A hydrogen-system control device according to the present embodiment is a hydrogen-system control device that controls a hydrogen system. The hydrogen-system control device includes an acquirer configured to acquire a predicted value of the first power for a time period for which an amount of the second power to be received has been set, and a controller configured to cause the hydrogen system to additionally produce hydrogen in an amount corresponding to a usage ratio of surplus power by which a supplied value of the first power exceeds the predicted value of the first power, wherein the controller sets the usage ratio for a first time period within a predetermined time period to a value larger than the usage ratio for a second time period that is after the first time period and within the predetermined time period.

Abstract: A hydrogen-energy control system according to the present embodiment includes a hydrogen energy system, a power grid control system, a hydrogen transport system, and a hydrogen-energy integrated management system configured to control the hydrogen energy system based on information on communication with the power grid control system, wherein the hydrogen-energy integrated management system includes a first communication portion configured to perform communication of at least data of a charge request in charge and discharge requests with the power grid control system, a second communication portion configured to perform communication of hydrogen demand data with the hydrogen transport system, a target hydrogen-amount acquisition portion configured to acquire a target hydrogen-production amount based on the hydrogen demand data, and an operation planning portion configured to create an operation plan in the hydrogen energy system based on the target hydrogen-production amount and the data of the charge request.

Abstract: A fiber structure includes first and second optical fibers disposed such that end portions thereof butt, a sheet-shaped saturable absorber including a carbon nanotube and disposed between the end portion of the first optical fiber and the end portion of the second optical fiber, and a housing internally accommodating the end portion of the first optical fiber and the end portion of the second optical fiber. A space in the housing including the saturable absorber is airtight.

Abstract: A controller according to an embodiment controls a hydrogen system including at least a hydrogen production system in which received power is planned in advance and a hydrogen production amount changes in accordance with the received power. The controller includes: a processor that calculates, in a preparation time period before a demand adjustment time period in which a target value of the received power is set in advance, a control command value such that input power to be inputted as the received power to the hydrogen production system matches the target value at a start of the demand adjustment time period; and a command controller that outputs the control command value calculated by the processor to the hydrogen production system.

Abstract: A hydrogen-system control device according to the present embodiment is a control system for a hydrogen system that produces hydrogen: a first setter; a second setter configured to set an actual power consumption amount obtained by reducing a reduced power amount from the first power consumption amount in advance, when the demand response for reducing the first power consumption amount in the request period is requested the device comprising: and a controller configured to control a power amount of the second power in the request period based on the actual power consumption amount. The second setter is configured to set the actual power consumption amount in a range in which the hydrogen system is able to achieve a target amount of hydrogen to be produced in a first period that includes the request period and is longer than the request period.

Abstract: A fiber structure includes first and second optical fibers disposed such that end portions thereof butt, a sheet-shaped saturable absorber including a carbon nanotube and disposed between the end portion of the first optical fiber and the end portion of the second optical fiber, and a housing internally accommodating the end portion of the first optical fiber and the end portion of the second optical fiber. A space in the housing including the saturable absorber is airtight.

Abstract: A fiber structure includes first and second optical fibers disposed such that tip portions thereof butt and a sheet-shaped saturable absorber sandwiched between the tip portion of the first optical fiber and the tip portion of the second optical fiber. Each of the tip portions of the first optical fiber and the second optical fiber has a core, a cladding provided around the core, and a ferrule provided around the cladding. The tip portion of the first optical fiber has a protruding shape protruding to a tip side. The saturable absorber has an adhering part at least adhering to the core of the first optical fiber and a non-adhering part present around the adhering part and not adhering to the tip portion of the first optical fiber.

Abstract: A hydrogen-system control device according to the present embodiment is a hydrogen-system control device that controls a hydrogen system. The hydrogen-system control device includes an acquirer configured to acquire a predicted value of the first power for a time period for which an amount of the second power to be received has been set, and a controller configured to cause the hydrogen system to additionally produce hydrogen in an amount corresponding to a usage ratio of surplus power by which a supplied value of the first power exceeds the predicted value of the first power, wherein the controller sets the usage ratio for a first time period within a predetermined time period to a value larger than the usage ratio for a second time period that is after the first time period and within the predetermined time period.

Abstract: To provide a control device for a vehicle capable of controlling the torque of a drive source so as to appropriately balance the suppression of body vibrations and the securing of a transient response during acceleration or deceleration. This control device for a vehicle includes an accelerator position sensor that detects the accelerator opening, a torque adjustment mechanism such as a throttle valve that adjusts the torque of an engine as the drive source of the vehicle, and a powertrain control module (PCM) that controls the torque adjustment mechanism based on the accelerator opening. The PCM sets the target acceleration of the vehicle based on the accelerator opening, sets the target torsion angle of the drive shaft based on the target acceleration, sets the target torque of the engine based on the target torsion, and controls the torque adjustment mechanism based on the target torque.

Abstract: A controller according to an embodiment controls a hydrogen system including at least a hydrogen production system in which received power is planned in advance and a hydrogen production amount changes in accordance with the received power. The controller includes: a processor that calculates, in a preparation time period before a demand adjustment time period in which a target value of the received power is set in advance, a control command value such that input power to be inputted as the received power to the hydrogen production system matches the target value at a start of the demand adjustment time period; and a command controller that outputs the control command value calculated by the processor to the hydrogen production system.

Abstract: A hydrogen-energy control system according to the present embodiment includes a hydrogen energy system, a power grid control system, a hydrogen transport system, and a hydrogen-energy integrated management system configured to control the hydrogen energy system based on information on communication with the power grid control system, wherein the hydrogen-energy integrated management system includes a first communication portion configured to perform communication of at least data of a charge request in charge and discharge requests with the power grid control system, a second communication portion configured to perform communication of hydrogen demand data with the hydrogen transport system, a target hydrogen-amount acquisition portion configured to acquire a target hydrogen-production amount based on the hydrogen demand data, and an operation planning portion configured to create an operation plan in the hydrogen energy system based on the target hydrogen-production amount and the data of the charge request.

Abstract: To provide a control device for a vehicle capable of controlling the torque of a drive source so as to appropriately balance the suppression of body vibrations and the securing of a transient response during acceleration or deceleration. This control device for a vehicle includes an accelerator position sensor that detects the accelerator opening, a torque adjustment mechanism such as a throttle valve that adjusts the torque of an engine as the drive source of the vehicle, and a powertrain control module (PCM) that controls the torque adjustment mechanism based on the accelerator opening. The PCM sets the target acceleration of the vehicle based on the accelerator opening, sets the target torsion angle of the drive shaft based on the target acceleration, sets the target torque of the engine based on the target torsion, and controls the torque adjustment mechanism based on the target torque.

Abstract: A combustor is provided with a combustion liner (12) in which a combustion gas flows through the inner peripheral side and a plurality of through-holes (14) are formed, and a sound attenuator (20) having a space-forming member (21) configured to form a space (S) connected to the plurality of through-holes (14) at the outer peripheral side of the combustion liner (12). The space-forming member has a main body having an opening configured to bring an outside and the space in communication with each other, and a lid joined to an outer surface of the main body via a welded portion and configured to protrude outward and close the opening.