Abstract: A joining structure according to one embodiment of the present invention includes a first member and a second member, the first member having a hole extending along an axis direction, the second member including a shaft member, the shaft member being formed of a fiber-containing composite material and having a shape to fit in the hole, the second member being joined to the first member via the shaft member so that movement thereof in the axis direction is restricted.

Abstract: A joining structure according to one embodiment of the present invention includes a first member and a second member, the first member having a hole extending along an axis direction, the second member including a shaft member, the shaft member being formed of a fiber-containing composite material and having a shape to fit in the hole, the second member being joined to the first member via the shaft member so that movement thereof in the axis direction is restricted.

Abstract: A joint structure includes a first member configured to be connected rotatably to a mating member, and a second member configured to be connected rotatably to an actuator for driving the mating member. Each of the first and second members has one or more ridge portions that extend circumferentially along an outer peripheral surface. The joint structure further includes a core shaft connecting the first member and the second member, and a covering member provided tightly thereon to cover the core shaft, the one or more ridge portions of the first member, and the one or more ridge portions of the second member.

Abstract: A joint structure includes a bent portion, a first member configured to be connected rotatably to a mating member, a second member configured to be connected rotatably to an actuator for driving the mating member, and a core shaft. The core shaft has a first connecting portion and a second connecting portion. The core shaft is connected to the first member at the first connecting portion and connected to the second member at the second connecting portion. The joint structure further includes a covering member covering the first connecting portion and the second connecting portion. The bent portion is provided at a position different from the first connecting portion.

Abstract: An actuator includes an inverter, a stator, a movable part, a controller, an injector, a current detector, and an estimator. The inverter is driven by a power generated by the axial force of an engine, etc. The stator includes an armature coil driven by the inverter. The movable part applies a driving force to at least one of a rudder surface of a tailplane of the airplane, etc. The controller controls the inverter in accordance with a signal from a maneuvering system. The injector injects a high-frequency signal into the coil. The current detector detects a coil current. The estimator estimates a position of the movable part.

Abstract: A switching device includes: a lower switching element, an upper switching element having a source connected to a drain of the lower switching element; a control circuit including a first output part that supplies a driving signal to the lower switching element; a Zener diode having a cathode connected to the first output part; a parallel capacitor connected to the Zener diode in parallel; a resistor connected between an anode of the Zener diode and a gate of the lower switching element; and a gate-side capacitor provided separate from a parasitic capacitance of the lower switching element, having a larger capacitance than the parasitic capacitance of the lower switching element, and connected, outside the lower switching element, between the gate and a source of the lower switching element. The capacitance of the gate-side capacitor is smaller than a capacitance of the parallel capacitor.

Abstract: A position estimation apparatus includes: a supplying unit that supplies a high-frequency signal Sh to a solenoid for driving a spool of an electromagnetic valve; an acquisition unit that acquires electrical information Je related to the solenoid supplied with the high-frequency signal Sh, and an estimation unit that estimates a position of the spool based on a result of comparison between the electrical information Je acquired by the acquisition unit and the high-frequency signal Sh supplied from the supplying unit.

Abstract: One object is to calculate the position of a rod of a linear actuator with a high precision. The linear actuator includes a rod capable of moving in an axial direction relative to a housing. The rod is moved by rotation of an output shaft of a motor. A position sensor for sensing the relative position of the rod relative to a preset reference position is provided in the housing. A rotation sensor for sensing the rotation angle of the output shaft of the motor is provided in the vicinity of the motor. The linear actuator includes a position calculating unit for calculating the position of the rod based on a position sensing value of the position sensor and a rotation angle sensing value of the rotation sensor.

Abstract: Provided are powder particles used for fabrication of a shaped metal object for which determination of an impurity therein can be easily performed, a manufacturing method thereof, a sorting device and sorting method thereof, a powder purity determination device and method, a powder storage method, a powder storage container, a method of manufacturing a shaped metal object, and a shaped metal object manufacturing apparatus. The powder particle for a shaped metal object includes a powder body made of metal, and an identification portion provided on or in the powder body.

Abstract: One object is to calculate the position of a rod of a linear actuator with a high precision. The linear actuator includes a rod capable of moving in an axial direction relative to a housing. The rod is moved by rotation of an output shaft of a motor. A position sensor for sensing the relative position of the rod relative to a preset reference position is provided in the housing. A rotation sensor for sensing the rotation angle of the output shaft of the motor is provided in the vicinity of the motor. The linear actuator includes a position calculating unit for calculating the position of the rod based on a position sensing value of the position sensor and a rotation angle sensing value of the rotation sensor.

Abstract: A switching device includes: a lower switching element, an upper switching element having a source connected to a drain of the lower switching element; a control circuit including a first output part that supplies a driving signal to the lower switching element; a Zener diode having a cathode connected to the first output part; a parallel capacitor connected to the Zener diode in parallel; a resistor connected between an anode of the Zener diode and a gate of the lower switching element; and a gate-side capacitor provided separate from a parasitic capacitance of the lower switching element, having a larger capacitance than the parasitic capacitance of the lower switching element, and connected, outside the lower switching element, between the gate and a source of the lower switching element. The capacitance of the gate-side capacitor is smaller than a capacitance of the parallel capacitor.

Abstract: An actuator includes an inverter, a stator, a movable part, a controller, an injector, a current detector, and an estimator. The inverter is driven by a power generated by the axial force of an engine, etc. The stator includes an armature coil driven by the inverter. The movable part applies a driving force to at least one of a rudder surface of a tailplane of the airplane, etc. The controller controls the inverter in accordance with a signal from a maneuvering system. The injector injects a high-frequency signal into the coil. The current detector detects a coil current. The estimator estimates a position of the movable part.

Abstract: A joining structure according to one embodiment of the present invention includes a first member and a second member, the first member having a hole extending along an axis direction, the second member including a shaft member, the shaft member being formed of a fiber-containing composite material and having a shape to fit in the hole, the second member being joined to the first member via the shaft member so that movement thereof in the axis direction is restricted.

Abstract: One object is to provide a supporting structure for a force transmission member, an aircraft reaction link, a flight control surface driving unit, a method of mounting a force transmission member, and a method of manufacturing aircraft reaction link that enable weight reduction while ensuring necessary strength. In accordance with one aspect, the reaction link includes a bush and a link body formed of a fiber-reinforced plastic and supporting the bush. The link body includes a supporting portion supporting the bush, and the fibers included in the supporting portion are continuous.

Abstract: First solder is lead-free solder that contains no lead (Pb). The first solder includes a first metal that contains at least Sn; and a second metal that contains at least a Ni—Fe alloy.

Abstract: An electronic circuit module component includes: an electronic component; a circuit board including the electronic component mounted thereon; and a bonding metal disposed between a terminal electrode of the electronic component and a terminal electrode of the circuit board, and including Sn alloy phases, an Ni—Sn alloy phase that disperses and forms between the Sn alloy phases and includes at least Fe, and a plurality of holes that is formed inside the Ni—Sn alloy phase and has a diameter of 5 ?m or less. A center distance between the holes adjacent to each other is 10 ?m or more.

Abstract: Provided is a power system 1 including a central distributor 3, to which power is supplied from a power generator 2 of an aircraft 100, and a distal distributor 5. The distal distributor 5 is away from the central distributor 3 in the aircraft 100, so that the distal distributor 5 receives a power supply from the central distributor 3, the distal distributor 5 distributing the supplied power to electric actuators 15 and a wing illuminator 18.

Abstract: A failure detection mechanism for an electric actuator and/or an electric actuator includes: a first gear mechanism connected to a first motor; a second gear mechanism connected to a second motor; an output section capable of rotating at a speed produced by adding together a rotation speed based on the first gear mechanism and a rotation speed based on the second gear mechanism; a first sensor configured to sense a value of electric current driving the first motor or a value associated with the value of the electric current; a second sensor configured to sense a value of electric current driving the second motor or a value associated with the value of the electric current; and a comparison unit configured to determine a failure based on a result of comparison between a first sensing value from the first sensor and a second sensing value from the second sensor.