Abstract: There is provided a printing apparatus which includes the following: A printhead including a plurality of nozzles that discharge ink to a print medium. A first detection unit that detects a distance between the printhead and a platen. An adjustment unit that adjusts the distance between the printhead and the platen. An acquisition unit that acquires difference information concerning a difference of a distance between the platen and each of the nozzle on an upstream side and the nozzle on a downstream side in a conveyance direction of the print medium. The adjustment unit adjusts the distance based on a detection result of the first detection unit and the difference information acquired by the acquisition unit.

Abstract: A rotating machine power conversion device is obtained which achieves operational continuation in a rotational speed range in which the operational continuation is enabled, even when a single phase of an electrical power conversion device made of switching devices causes a disconnection or turn-off failure. The rotating machine power conversion device comprises: a normality-case/abnormality-case current control device selection device for transferring between a normality-case current control device and an abnormality-case current control device in accordance with a determination result of an abnormality determination device; and an abnormality-case current control device/power conversion halt device selection device, using a rotational speed calculation device, for transferring between the abnormality-case current control device used when a rotational speed is lower than that being prespecified, and the power conversion halt device used when a rotational speed is higher than that being prespecified.

Abstract: A sliding member (10) includes a base material (12), a porous sintered layer (14) provided on the base material (12), and a resin layer (16) impregnated into the porous sintered layer (14) and provided on the porous sintered layer (14). In the porous sintered layer (14), a porosity decreases from a second surface (S2) opposite to a first surface (S1) closer to the base material, toward the first surface (S1), the first surface and the second surface each being one of end surfaces in the thickness direction, and a decrease rate of the porosity in the thickness direction (Z) in a first region (E1) occupying 50% or more of the thickness of the porous sintered layer (14) from the second surface (S2) toward the first surface (S1) is larger than a decrease rate of the porosity in the thickness direction (Z) in a second region (E2) other than the first region (E1) in the porous sintered layer (14).

Abstract: There has been a drawback in that current command values need to be set for a current command unit of a power conversion device in accordance with efficiency, and thus the number of operation steps increases. In the power conversion device connected between a three-phase AC rotating machine and a DC power supply and configured to convert DC power into AC power, a DC voltage value, of the DC power supply, that is to be inputted to a current command unit of the power conversion device is corrected on the basis of an efficiency index, and a current command value to be outputted by the current command unit is changed on the basis of the corrected DC voltage value and a torque command value, whereby the efficiencies of the power conversion device and the three-phase AC rotating machine are controlled.

Abstract: A controller for a rotary electric machine may include: at least one memory that stores a temperature prediction data in which a relationship among a rotational speed of a rotary electric machine, a torque information of the rotary electric machine, a temperature of the rotary electric machine at a reference time point, and a temperature of the rotary electric machine after an estimation calculation period elapses from the reference time point, and at least one processor that, at every estimation calculation period, sets the last calculation time before the estimation calculation period as the reference time point, and, by referring to the temperature prediction data, calculates an estimation value of temperature of the rotary electric machine after the estimation calculation period elapses from the last calculation time.

Abstract: To provide a controller for rotary electric machine apparatus which can calculate the voltage command value of the converter which reduces power loss with good accuracy, in the case where the normal modulation control and the overmodulation control are switched and performed. A controller for rotary electric machine apparatus sets a system voltage that power loss becomes the minimum as the converter voltage command value, based on a power loss characteristics of the normal modulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the normal modulation control, and a power loss characteristics of the overmodulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the overmodulation control.

Abstract: To provide a controller for rotary electric machine which can estimate a transitional temperature with good accuracy, while considering the heating amount and the heat radiation amount due to copper loss and iron loss which change according to the operating point of rotational speed and torque, and suppressing the increase in arithmetic load. A controller for rotary electric machine, at calculation timing of every estimation calculation period, by referring to a temperature prediction data in which a relationship among a rotational speed, a torque information, a temperature at a reference time point, and a temperature after lapse of the estimation calculation period from the reference time point, calculates an estimation value of temperature after lapse of the estimation calculation period from the last time calculation timing, corresponding to the present rotational speed, the present torque information, and the estimation value of temperature calculated at the last time calculation timing.

Abstract: There is provided an electric-power conversion system controller in which even when the temperatures of a switching device and a diode included in the driving circuit for a converter become high, the performances of the devices are prevented from being deteriorated and the lifetimes thereof are prevented from being shortened.

Abstract: To provide a controller for rotary electric machine apparatus which can calculate the voltage command value of the converter which reduces power loss with good accuracy, in the case where the normal modulation control and the overmodulation control are switched and performed. A controller for rotary electric machine apparatus sets a system voltage that power loss becomes the minimum as the converter voltage command value, based on a power loss characteristics of the normal modulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the normal modulation control, and a power loss characteristics of the overmodulation control which is a power loss characteristics of at least the inverter with respect to the system voltage in performing the overmodulation control.

Abstract: There is provided an electric-power conversion system controller in which even when the temperatures of a switching device and a diode included in the driving circuit for a converter become high, the performances of the devices are prevented from being deteriorated and the lifetimes thereof are prevented from being shortened.

Abstract: A bag capable of storing an article, the bag being conveyed while being suspended from a rail. The bag includes: a body that stores the article; a suspending member that suspends the body from the rail; and a reorienting member that reorients the body with respect to the suspending member. The body includes a bag having an internal storage space for the article, and the reorienting member is provided independently of the body, is supported pivotally with respect to the suspending member, has a free end in the body so as to pivot with respect to the suspending member, and pivots with respect to the suspending member so as to reorient the body.

Abstract: A power conversion device including an intermediate capacitor that carries out a charging and discharging operation and a voltage sensor that detects a voltage of the intermediate capacitor, and including a current sensor that detects a current flowing in a reactor, and an abnormality determining unit that determines that there is an abnormality of the voltage sensor using a current value calculated based on a detected value from the current sensor, wherein a gain error, an offset error, and a sticking error of the voltage sensor can be detected.

Abstract: A rotating machine power conversion device is obtained which achieves operational continuation in a rotational speed range in which the operational continuation is enabled, even when a single phase of an electrical power conversion device made of switching devices causes a disconnection or turn-off failure. The rotating machine power conversion device comprises: a normality-case/abnormality-case current control device selection device for transferring between a normality-case current control device and an abnormality-case current control device in accordance with a determination result of an abnormality determination device; and an abnormality-case current control device/power conversion halt device selection device, using a rotational speed calculation device, for transferring between the abnormality-case current control device used when a rotational speed is lower than that being prespecified, and the power conversion halt device used when a rotational speed is higher than that being prespecified.

Abstract: There has been a drawback in that current command values need to be set for a current command unit of a power conversion device in accordance with efficiency, and thus the number of operation steps increases. In the power conversion device connected between a three-phase AC rotating machine and a DC power supply and configured to convert DC power into AC power, a DC voltage value, of the DC power supply, that is to be inputted to a current command unit of the power conversion device is corrected on the basis of an efficiency index, and a current command value to be outputted by the current command unit is changed on the basis of the corrected DC voltage value and a torque command value, whereby the efficiencies of the power conversion device and the three-phase AC rotating machine are controlled.

Abstract: A power conversion device including an intermediate capacitor that carries out a charging and discharging operation and a voltage sensor that detects a voltage of the intermediate capacitor, and including a current sensor that detects a current flowing in a reactor, and an abnormality determining unit that determines that there is an abnormality of the voltage sensor using a current value calculated based on a detected value from the current sensor, wherein a gain error, an offset error, and a sticking error of the voltage sensor can be detected.

Abstract: Provided are a synchronous machine control device SMCD including a converter configured to boost a voltage of a direct current power source DCPS in which, when the SMCD returns to operation after the operation stopping, fail-proof return to operation through the prevention of damage to the DCPS and the shortening of the time required for the return to operation are balanced. When returning to operation, the SMCD issues an operation enable command to an inverter and the converter simultaneously in the case where a calculated electric power value calculated from a rotational speed and a torque command is equal or higher than a threshold and, in the case where the calculated electric power value is less than the threshold, issues an operation enable command to the converter after an operation command that makes the electric power of the inverter equal or higher than a threshold is issued.

Abstract: The rotating-electric-machine control apparatus is provided with two or more torque compensation amount maps that each store a torque compensation amount corresponding to a detection rotation speed and a first torque command and a torque compensation amount map selector that selects a single torque compensation amount map from the two or more torque compensation amount maps, based on at least one of the detection rotation speed and control information indicating a control method utilized by the voltage applying device.

Abstract: Provided is a control device for a permanent magnet-type rotating electrical machine (100), which includes a current coordinate transformation unit (109) configured to output a d-axis current and a q-axis current by coordinate transformation of three-phase AC currents respectively detected by current detection units (111, 112, 113), a current correction direction calculation unit (108) configured to calculate a current correction direction through use of the d-axis current and the q-axis current, and a current correction amount addition unit (102) configured to correct a d-axis current command and a q-axis current command based on the current correction direction. In this manner, an induced voltage is converged to lie within a maximum voltage circle in accordance with a power supply voltage.

Abstract: A motor control device includes a current detector which, in generating a feedback current value on the basis of the detection result of a three-phase AC current supplied from an inverter to a motor, generates a first current detection value based on a first sample timing and a second current detection value based on a second sample timing that is shorter than the first sample timing; a coordinates converter which converts the coordinates of the first current detection value and the second current detection value to q and d axes; and a detection current processor which generates a feedback current value from the coordinate conversion results.

Abstract: The rotating-electric-machine control apparatus is provided with two or more torque compensation amount maps that each store a torque compensation amount corresponding to a detection rotation speed and a first torque command and a torque compensation amount map selector that selects a single torque compensation amount map from the two or more torque compensation amount maps, based on at least one of the detection rotation speed and control information indicating a control method utilized by the voltage applying device.