Abstract: A power conversion device includes a power converter connected between a multi-phase alternating-current circuit and a direct-current circuit, and a control device to control the power converter. The control device detects an unbalanced component indicating a voltage unbalanced component or a current unbalanced component of the alternating-current circuit and limits a magnitude of an alternating current flowing between the power converter and the alternating-current circuit based on the unbalanced component.

Abstract: Provided is a pest control agent containing a fused ring pyrimidine compound represented by the following formula (I) or a salt thereof as an effective component. In formula (I), A represents a nitrogen atom or C—R4, B represents a nitrogen atom or C—R5, D represents a nitrogen atom or C—R6, X represents an oxygen atom, N—R7 or the like, each of R1, R2, R4 and R6 independently represents a hydrogen atom or the like, each of R3a and R3b independently represents a hydrogen atom or the like, R5 represents an alkylthio group or the like, R7 represents an alkoxy group or the like, and Ht represents a pyridyl group that may be substituted, or the like.

Abstract: A power conversion system includes a DC-DC converter, a voltage detector, a current detector and a controller. The controller controls the DC-DC converter such that the DC-DC converter starts outputting power when the output voltage detected by the voltage detector is below a predetermined voltage and stops outputting the power when the output current detected by the current detector is below a reference current that corresponds to the conversion efficiency being larger than or equal to a predetermined conversion efficiency. The reference current is determined as a current value at which the conversion efficiency is decreased to be lower than the predetermined conversion efficiency when the output current exceeds the current value. The controller includes a limiting means that limits the output current not to exceed the reference current while the DC-DC converter is outputting the power.

Abstract: In an object detecting method according to an embodiment, external reference points are set in external space of a model of an object and an internal reference point is set in internal space of the model. A table is stored in which feature quantities on a local surface of the model are associated with positions of the external reference points and the internal reference point. The feature quantity on the local surface of the model is calculated, and the position of the reference point whose feature quantity is identical to the calculated feature quantity is acquired from the table and is converted into a position in a real space. When the converted position is outside the object, the position is excluded from information for estimation and the position and the attitude of the object are estimated.

Abstract: Provided is a pest control agent containing a fused ring pyrimidine compound represented by the following formula (I) or a salt thereof as an effective component. In formula (I), A represents a nitrogen atom or C—R4, B represents a nitrogen atom or C—R5, D represents a nitrogen atom or C—R6, X represents an oxygen atom, N—R7 or the like, each of R1, R2, R4 and R6 independently represents a hydrogen atom or the like, each of R3a and R3b independently represents a hydrogen atom or the like, R5 represents an alkylthio group or the like, R7 represents an alkoxy group or the like, and Ht represents a pyridyl group that may be substituted, or the like.

Abstract: A power conversion system includes a DC-DC converter, a voltage detector, a current detector and a controller. The controller controls the DC-DC converter such that the DC-DC converter starts outputting power when the output voltage detected by the voltage detector is below a predetermined voltage and stops outputting the power when the output current detected by the current detector is below a reference current that corresponds to the conversion efficiency being larger than or equal to a predetermined conversion efficiency. The reference current is determined as a current value at which the conversion efficiency is decreased to be lower than the predetermined conversion efficiency when the output current exceeds the current value. The controller includes a limiting means that limits the output current not to exceed the reference current while the DC-DC converter is outputting the power.

Abstract: In an object detecting method according to an embodiment, external reference points are set in external space of a model of an object and an internal reference point is set in internal space of the model. A table is stored in which feature quantities on a local surface of the model are associated with positions of the external reference points and the internal reference point. The feature quantity on the local surface of the model is calculated, and the position of the reference point whose feature quantity is identical to the calculated feature quantity is acquired from the table and is converted into a position in a real space. When the converted position is outside the object, the position is excluded from information for estimation and the position and the attitude of the object are estimated.

Abstract: A recognition program evaluation device includes an imaginary data acquisition portion to generate or acquire imaginary scene data that includes position data of each of a plurality of workpieces and indicates the plurality of workpieces in a randomly stacked state. An imaginary recognition portion recognizes each of the plurality of workpieces indicated in the randomly stacked state using a recognition program including at least one parameter set to adjust recognition of the plurality of workpieces. A recognition evaluation portion compares the position data of each of the plurality of workpieces with a result of recognition of each of the plurality of workpieces recognized by the imaginary recognition portion so as to evaluate recognition performance of the recognition program. A result display portion causes a display of a result of evaluation of the recognition performance of the recognition program evaluated by the recognition evaluation portion.

Abstract: This stage apparatus includes a movable table to hold a sample, a levitation unit to operate the movable table at least in a vertical direction, and a linear motor to operate the movable table in a first horizontal direction in a horizontal plane, including a linear motor movable element arranged inside the movable table and a linear motor stator arranged inside the movable table.

Abstract: This stage apparatus includes a movable table to hold a sample, a levitation unit to operate the movable table at least in a vertical direction, and a linear motor to operate the movable table in a first horizontal direction in a horizontal plane, including a linear motor movable element arranged inside the movable table and a linear motor stator arranged inside the movable table.

Abstract: A multi-degree-of-freedom actuator includes a movable element having a plurality of permanent magnets, and a stator including a stator core and a plurality of coils. The permanent magnets are arranged in the X direction such that the number P of poles is an even number of two or more. The coils are of two types: X-direction driving coil and Z-direction driving coil. The Z-direction driving coils the number of which is P are disposed at positions opposite to magnetic poles of the permanent magnets. The X-direction driving coil or coils the number of which is P/2 are each disposed at a position opposite to an intermediate point between two adjacent ones of the magnetic poles of the permanent magnets.

Abstract: A multi-degree-of-freedom actuator includes a movable element having a plurality of permanent magnets, and a stator including a stator core and a plurality of coils. The permanent magnets are arranged in the X direction such that the number P of poles is an even number of two or more. The coils are of two types: X-direction driving coil and Z-direction driving coil. The Z-direction driving coils the number of which is P are disposed at positions opposite to magnetic poles of the permanent magnets. The X-direction driving coil or coils the number of which is P/2 are each disposed at a position opposite to an intermediate point between two adjacent ones of the magnetic poles of the permanent magnets.

Abstract: There is provided a stage apparatus at low cost by constituting a counter mass constituting a movable portion of the stage apparatus at low cost. In a stage apparatus used for fabrication or for inspection, by fastening two pieces of first frames (1) and two pieces of second frames (2) by bolts in a positional relationship of making the first frames (1) and the second frames (2) respectively opposed to each other, a counter mass constituting a movable portion of the stage apparatus is constituted, by attaching ceramic-made air pads (4) to air pad attaching faces respectively formed at upper faces and lower faces of two pieces of the first frames (1) on both sides in a length direction, four air bearings are constituted at four corners of the counter mass of the stage apparatus, and the counter mass is floated up by the four air bearings.

Abstract: A rotary piston engine having peripheral and side intake ports, said peripheral intake port being supplied with a fuel-air mixture while said intake port being supplied with only air, wherein a check valve is provided in an intake passage which supplies the fuel-air mixture to said peripheral intake port.

Abstract: In the stratified combustion rotary piston engine of the Wankel-type, wherein individual combustion chambers are charged with a relatively rich fuel-air mixture and a relatively lean fuel-air mixture or air by first and second intake systems, each system incorporating a fuel injection means, at least one of said fuel injection means being actuated for only selected suction strokes of individual combustion chambers so that the overall air/fuel ratio is altered for the individual combustion chambers.

Abstract: A fuel supply system for a rotary piston engine of the Wankel-type, adapted to supply fuel in the injection manner by varying the amount of fuel to be injected for individual combustion chambers so that the combustion of the rich or lean fuel-air mixture is effected substantially alternately in succeeding combustion chambers.

Abstract: In a stratified combustion rotary piston engine of the Wankel-type wherein individual combustion chambers are charged with a fuel-air mixture by a fuel-air mixture supply system and air by an air supply system, a fuel supply system incorporated in said fuel-air supply system being adapted to supply fuel in the injection manner by varying the amount of fuel to be injected for individual combustion chambers so that the overall air/fuel ratio is altered for the individual combustion chambers.

Abstract: A stratified combustion rotary piston engine of the type which is supplied with a fuel-air mixture from a peripheral intake port and only air from a side intake port, wherein a fuel supply system for supplying said fuel-air mixture to said peripheral intake port comprises a fuel injection device which is controlled depending upon the air flow to said peripheral intake port and said side intake port.