Abstract: Regarding a method of collecting a target object falling through the air by using an unmanned aerial vehicle, the method including: an information transmission step of transmitting state information of the target object falling through the air from the target object; and a collection step of capturing the target object by an unmanned aerial vehicle flying in accordance with command information generated based on the state information.

Abstract: In a method of transporting cargo suspended by multiple UAVs, each of the multiple UAVs flies such that a relative positional relationship of each of the multiple UAVs to the cargo is maintained. This method of transporting cargo is achieved by one or both of a ground position control mode in which flight of each of the multiple UAVs is controlled to follow a change in a position of the cargo relative to the ground, and an interval control mode in which the flight of each of the multiple UAVs is controlled so as to maintain an interval of each of the multiple UAVs to the cargo.

Abstract: The present disclosure provides a motor driving device. The motor driving device includes a control unit operable to output gate signals to gates of motor relays. The gate signals are inputted to a power relay control unit operable to switch whether to apply an output voltage to a gate of the power relay.

Abstract: Gate driver circuit for driving power transistor includes: gate line to be connected to the transistor; source line to be connected to the transistor; first current source sourcing current to the gate line; and second current source sinking current from the gate line, wherein the first current source includes: first reference impedance element connected to power supply line; first reference transistor installed between the first reference impedance element and the gate line; first error amplifier having output connected to gate of the first reference transistor, one input connected to the first reference impedance element, and the other input where first reference voltage is input; and first transistor elements installed between the power supply line and the gate line, and wherein the first current source is switched between a state, in which gate of each first transistor element is connected to the output of the first error amplifier, and OFF state.

Abstract: Gate driver circuit for driving power transistor includes: gate line to be connected to the transistor; source line to be connected to the transistor; first current source sourcing current to the gate line; and second current source sinking current from the gate line, wherein the first current source includes: first reference impedance element connected to power supply line; first reference transistor installed between the first reference impedance element and the gate line; first error amplifier having output connected to gate of the first reference transistor, one input connected to the first reference impedance element, and the other input where first reference voltage is input; and first transistor elements installed between the power supply line and the gate line, and wherein the first current source is switched between a state, in which gate of each first transistor element is connected to the output of the first error amplifier, and OFF state.

Abstract: A motor drive device determines whether or not a combination of logic levels of sensor signals S1 to S3 is normal, whenever the logic levels of the sensor signals S1 to S3 are changed. Each of the sensor signals S1 to S3 indicates a rotation position of a rotor. When the combination is not normal, the number of the level changes in each of the sensor signals S1 to S3 is counted. When the count value of any one of the sensor signals reaches a threshold value Cth, supply of power to a motor is stopped.

Abstract: In the case of this control device (10) for controlling a machine on the basis of multiple machine data acquired from the machine, a monitoring data acquisition instruction unit (12) instructs a vibration collection unit (3) and a sound collection unit (7) to acquire data at arbitrarily settable times, and a storage instruction unit (14) causes the acquired data and/or feature amounts calculated from the data, multiple machine data acquired at the same time as the measurement unit data, and information about the acquisition date/time of the data to be stored into a database (30) in association with one another.

Abstract: A motor drive device determines whether or not a combination of logic levels of sensor signals S1 to S3 is normal, whenever the logic levels of the sensor signals S1 to S3 are changed. Each of the sensor signals S1 to S3 indicates a rotation position of a rotor. When the combination is not normal, the number of the level changes in each of the sensor signals S1 to S3 is counted. When the count value of any one of the sensor signals reaches a threshold value Cth, supply of power to a motor is stopped.

Abstract: An electromagnetic block and a movable block are attached onto a base in an inclination attitude. Contact mechanisms press-fitted from above the base are laterally arranged in the inclination attitude, and the contact mechanisms are arranged in parallel in upper and lower stages. Idle end portions of movable contact pieces in the contact mechanisms are latched in a card which is linearly moved in a lateral direction. Terminals are projected downward from a bottom surface of the base, one of the terminals is connected to the fixed contact pieces of the contact mechanism, and the other terminal is connected to the movable contact pieces of the contact mechanism. The upper contact mechanism and the lower contact mechanism are alternately arranged in the lateral direction.

Abstract: An electromagnetic block and a movable block are attached onto a base in an inclination attitude. Contact mechanisms press-fitted from above the base are laterally arranged in the inclination attitude, and the contact mechanisms are arranged in parallel in upper and lower stages. Idle end portions of movable contact pieces in the contact mechanisms are latched in a card which is linearly moved in a lateral direction. Terminals are projected downward from a bottom surface of the base, one of the terminals is connected to the fixed contact pieces of the contact mechanism, and the other terminal is connected to the movable contact pieces of the contact mechanism. The upper contact mechanism and the lower contact mechanism are alternately arranged in the lateral direction.