Abstract: Provided is an image measurement system including: a placement portion on which a measurement object is placed; an imaging unit configured to be relatively movable with respect to the placement portion; a movement control unit that switches between a high-speed movement mode and a low-speed movement mode and allows the imaging unit to relatively move with respect to the placement portion; and an imaging control unit that captures instantaneous image information by the imaging unit on the basis of switching to the low-speed movement mode.

Abstract: A description support device for displaying information on a topic to be checked in an utterance by a user, the description support device includes: an inputter to acquire input information indicating an utterance sentence corresponding to the utterance; a controller to generate information indicating a check result of the topic for the utterance sentence; and a display to display information generated by the controller, wherein the display is configured to display a checklist indicating whether or not the topic is described in the utterance sentence indicated by the input information sequentially acquired by the inputter, and wherein the display is configured to display, according to a likelihood of each utterance sentence, display information including the utterance sentence, the likelihood defining the check result of the topic in the checklist.

Abstract: A control device which includes a power conversion circuit configured to supply driving power to an electric motor, a magnetic flux estimation circuit configured to estimate a primary magnetic flux of the motor, and a voltage command generation circuit (control circuit) configured to control the conversion circuit based on an estimation result of the primary magnetic flux, in which the estimation circuit performs, when an operating speed of the motor is less than a predetermined level, a first estimation of estimating the primary magnetic flux based on an output current to the motor and an inductance thereof, and performs, when the speed exceeds a predetermined level, a second estimation of estimating the primary magnetic flux by estimating a magnetic flux differential value based on an output voltage of the conversion circuit and integrating the value using, as an initial value, an estimation result by the first estimation.

Abstract: The power conversion device may include: power conversion circuitry configured to perform a power conversion for outputting a driving power to an induction motor; and control circuitry. The control circuitry may be configured to: receive a master command phase from a master power conversion device; generate a voltage command having a command phase in a rotating coordinate system based on a torque target value, wherein a rotating magnetic field for driving a rotor of the induction motor is generated to rotate with the rotating coordinate system; calculate a rotation phase of the rotating coordinate system based on a command phase difference between the master command phase and the command phase to reduce the command phase difference; and control the power conversion circuitry to output the driving power to the induction motor, in synchronization with the master power conversion device, based on the rotation phase and the voltage command.

Abstract: A control device which includes a power conversion circuit configured to supply driving power to an electric motor, a magnetic flux estimation circuit configured to estimate a primary magnetic flux of the motor, and a voltage command generation circuit (control circuit) configured to control the conversion circuit based on an estimation result of the primary magnetic flux, in which the estimation circuit performs, when an operating speed of the motor is less than a predetermined level, a first estimation of estimating the primary magnetic flux based on an output current to the motor and an inductance thereof, and performs, when the speed exceeds a predetermined level, a second estimation of estimating the primary magnetic flux by estimating a magnetic flux differential value based on an output voltage of the conversion circuit and integrating the value using, as an initial value, an estimation result by the first estimation.

Abstract: A member coupling mechanism capable of coupling two members using a necessary tightening force even in a limited space by a small and simple configuration. A member coupling mechanism includes a first member including a member coupling portion having an open apical surface, a second member coupled to the member coupling portion of the first member, an elastic sealing member inserted between the first member and the second member to seal an opening of the apical surface of the member coupling portion, a coupling member that couples the first member and the second member together, and an acting portion that exerts a force on the coupling member.

Abstract: A housing is provided with an internal space for accommodating an insert and a cylindrical cap attachment part provided, at the distal end surface thereof, with an opening part communicating with the internal space. An inclined groove that is inclined from the distal end side to the proximal end side of the cap attachment part along the circumferential direction of the cap attachment part is provided on the outer circumferential surface of the cap attachment part. A cap fixing part for attaching a seal cap to the cap attachment part has a cap holding part for holding the outer peripheral surface of the seal cap and an elastic part connected to the cap holding part. The elastic part is provided with a protrusion that is fit into the inclined groove of the outer peripheral surface of the cap attachment part.

Abstract: A member coupling mechanism capable of coupling two members using a necessary tightening force even in a limited space by a small and simple configuration. A member coupling mechanism includes a first member including a member coupling portion having an open apical surface, a second member coupled to the member coupling portion of the first member, an elastic sealing member inserted between the first member and the second member to seal an opening of the apical surface of the member coupling portion, a coupling member that couples the first member and the second member together, and an acting portion that exerts a force on the coupling member.

Abstract: A motor controller includes an inverter including circuitry which supplies power to a motor, and a controller including circuitry which controls the inverter such that the circuitry of the inverter supplies an AC current to a first axis of a stationary orthogonal coordinate system in the motor while changing a frequency of the AC current. The first axis has a predetermined phase relationship with a phase voltage of the motor.

Abstract: A housing is provided with an internal space for accommodating an insert and a cylindrical cap attachment part provided, at the distal end surface thereof, with an opening part communicating with the internal space. An inclined groove that is inclined from the distal end side to the proximal end side of the cap attachment part along the circumferential direction of the cap attachment part is provided on the outer circumferential surface of the cap attachment part. A cap fixing part for attaching a seal cap to the cap attachment part has a cap holding part for holding the outer peripheral surface of the seal cap and an elastic part connected to the cap holding part. The elastic part is provided with a protrusion that is fit into the inclined groove of the outer peripheral surface of the cap attachment part.

Abstract: A motor controller includes an inverter including circuitry which supplies power to a motor, and a controller including circuitry which controls the inverter such that the circuitry of the inverter supplies an AC current to a first axis of a stationary orthogonal coordinate system in the motor while changing a frequency of the AC current. The first axis has a predetermined phase relationship with a phase voltage of the motor.

Abstract: A motor control system includes a plurality of motors, a plurality of inverters, and a controller. The plurality of inverters are configured to drive the plurality of respective motors and are coupled to a common bus line through which DC power is supplied. When power supply is interrupted, the controller is configured to calculate a frequency command value so as to maintain a bus line voltage across the common bus line and configured to supply the frequency command value to the plurality of inverters.

Abstract: A power conversion apparatus includes a power converter, an LC filter, and a controller. The power converter is disposed between an AC power source and a load. The LC filter is disposed between the AC power source and the power converter. The controller controls the power converter to perform power conversion control between the AC power source and the load. The controller includes a command generator, an oscillation component acquirer, a regulator, and an actuator. The command generator generates an input current command including a command of an input current of the power converter. The oscillation component acquirer acquires an oscillation component of a current flowing through a capacitor of the LC filter. The regulator regulates the input current command based on the oscillation component acquired by the oscillation component acquirer. The actuator controls the power converter based on the input current command regulated by the regulator.

Abstract: A power regenerative converter includes: a power conversion unit configured to convert AC power supplied from an AC power supply into DC power and convert DC power into AC power to be supplied as regenerative electric power to the AC power supply; an LCL filter including a reactor unit having a plurality of reactors connected in series between the power conversion unit and the AC power supply, and capacitors each having one end connected to a series connection point of the reactors in the reactor unit; a drive control unit for controlling the power conversion unit based on an AC voltage command; and a voltage command compensation unit for calculating a compensation value in accordance with a capacitor voltage being a voltage at the series connection point of the reactors and adding the compensation value to the AC voltage command input to the drive control unit.

Abstract: A power conversion apparatus includes a power converter, an LC filter, and a controller. The power converter is disposed between an AC power source and a load. The LC filter is disposed between the AC power source and the power converter. The controller controls the power converter to perform power conversion control between the AC power source and the load. The controller includes a command generator, an oscillation component acquirer, a regulator, and an actuator. The command generator generates an input current command including a command of an input current of the power converter. The oscillation component acquirer acquires an oscillation component of a current flowing through a capacitor of the LC filter. The regulator regulates the input current command based on the oscillation component acquired by the oscillation component acquirer. The actuator controls the power converter based on the input current command regulated by the regulator.

Abstract: A motor controller includes an evaluation value calculator and an evaluation value searcher. The evaluation value calculator calculates an evaluation value represented by a function including a q-axis current value of a torque current component of a current through an induction motor. The evaluation value has a first sign among a positive sign and a negative sign when a rotational speed of the induction motor is greater than a frequency of a voltage applied to the induction motor by a predetermined amount, and has a second sign when the rotational speed is smaller than the frequency by the predetermined amount. The evaluation value searcher performs an evaluation value search to increase or decrease the frequency based on whether the evaluation value has the positive or negative sign so as to make the frequency close to the rotational speed of the induction motor in a free run state.

Abstract: A motor control system includes a plurality of motors, a plurality of inverters, and a controller. The plurality of inverters are configured to drive the plurality of respective motors and are coupled to a common bus line through which DC power is supplied. When power supply is interrupted, the controller is configured to calculate a frequency command value so as to maintain a bus line voltage across the common bus line and configured to supply the frequency command value to the plurality of inverters.

Abstract: A power regeneration device according to an aspect of embodiments includes a voltage detecting unit, a signal processing unit, a phase detecting unit, and a power conversion unit. The signal processing unit generates, by using self-oscillation when the output of an AC detection signal from the voltage detecting unit is stopped due to a power outage, an AC signal whose frequency is the same as that of and whose phase is continued to that of the AC detection signal just before the stop. The phase detecting unit detects the phase of the AC power supply on the basis of the AC signal from the signal processing unit when power is recovered from the power outage.

Abstract: A power regeneration apparatus includes a power conversion unit, an AC reactor, a voltage detecting unit, a phase detecting unit, a drive control unit for controlling the power conversion unit based on a phase detection value, and a reactive current component detecting unit. The phase detecting unit detects the phase of the AC power supply. The reactive current component detecting unit detects a reactive current component of a current. The drive control unit includes a phase correction section. The phase correction section corrects the phase detection value based on the reactive current component.