Abstract: An image forming apparatus comprises a first display device and a second display device that is arranged in a position different from the first display device. The first display device functions as a main display device, and the second display device functions as a sub-display device. The main display device is displayed with a main screen including predetermined contents. The main screen includes contents related to the image forming apparatus. The main screen is a setting screen, an operating screen, a preview screen, etc. The sub-display device is displayed with a sub-screen including contents related to the content included in the main screen. Support information, guidance information, an auxiliary input key, etc. are displayed in the sub-screen.

Abstract: An image forming apparatus is an in-body sheet discharge type image forming apparatus including an image forming portion and an image reading portion that is arranged above the image forming portion. The image forming apparatus comprises a sheet discharge tray and an operating panel. The sheet discharge tray is provided in an in-body sheet discharge portion between the image forming portion and the image reading station. On the sheet discharge tray, a sheet having been formed with an image by the image forming unit is discharged. The operating panel is provided on a front side of the sheet discharge tray. A part of a rear side of the operating panel overlaps with a sheet placement area having a front edge that is set on a front side compared to a rear end portion of the sheet discharge tray.

Abstract: An abnormality detection circuit detects an abnormality in a power storage device. A positive electrode terminal and a negative electrode terminal respectively receive a positive electrical potential and a negative electrical potential from a converter. A power storage module includes plural cells connected in series between the positive electrode terminal and the negative electrode terminal. The abnormality detection circuit includes a voltage detection circuit and a control circuit. The voltage detection circuit detects an electrical potential of an intermediate node located at an intermediate position between the positive electrode terminal and the negative electrode terminal on a basis of a ground potential. The control circuit determines an abnormality of the power storage module based on a change in an intermediate ground potential from voltage detection circuit from the ground potential.

Abstract: In a sensor output determination apparatus, a converter converts analog outputs of two sensors of a first-phase to two digital signals representing a current of the first-phase, and converts analog outputs of two sensors of a second-phase to two digital signals representing a current of the second-phase. The determination section determines whether the analog outputs of the two sensors of the first-phase are normal based on the two digital signals representing the current of the first-phase, and determines whether the analog outputs of the two sensors of the second-phase are normal based on the two digital signals representing the current of the second-phase. The transmission section transmits one of the two digital signals representing the current of the first-phase, one of the two digital signals representing the current of the second-phase, and a digital signal representing a result of determinations of the determination section, to the outside of the apparatus.

Abstract: An aluminum alloy material exhibiting excellent bendability can be produced without performing a straightening step, and can be bent without developing orange peel. The aluminum alloy material is a T4-tempered material formed of an Al—Cu—Mg—Si alloy including 1.0 to 2.5 mass % of Cu, 0.5 to 1.5 mass % of Mg, and 0.5 to 1.5 mass % of Si, with the balance being aluminum and unavoidable impurities, a matrix that forms an inner part of the aluminum alloy material having a microstructure formed by recrystallized grains having an average crystal grain size of 200 ?m or less, and the aluminum alloy material having a ratio of tensile strength/yield strength determined by a tensile test of 1.5 or more.

Abstract: A motor control system includes: a converter; two inverters; two alternating-current motors; and a control unit. The control unit is configured to control the system voltage by feedback of a current phase of a current vector of motor current of each of the motors on a d-q coordinate plane so that rectangular wave control of at least one of the first and second motors is performed in a state where the current phase is an optimal current phase, wherein the control unit selects, as a subject of the feedback, the current phase of one of the motors that is larger than the other motor in system voltage deviation obtained based on the current vector.

Abstract: [Problem] Provided is a method for producing an industrially advantageous hydrogenated polymer, whereby a high hydrogenation rate can be achieved by a small use amount therein at a level of not requiring a decalcification process of the catalyst. [Solution] A method for producing a hydrogenated polymer including hydrogenating, with a hydrogen molecule, a carbon-carbon double bond based on a conjugated diene structural unit of a polymer in which at least a part of a living polymer obtained by polymerizing a monomer containing one or more conjugated dienes using an organic alkali metal compound as a polymerization initiator is terminated by a hydrogen molecule, in the presence of a silane compound having at least one silyl hydride bond and an organic metal compound represented by the following general formula (I): wherein R1 to R10 are those as defined in the specification.

Abstract: An inverter control apparatus performs PWM control of a 3-phase inverter connected to a rotary machine, by operating switching devices corresponding to respective phases. In each of successive processing periods, the PWM control is applied such as to satisfy first and second conditions. The first condition is that the state of switching devices corresponding to a highest-voltage phase of the inverter during the processing period is held fixed throughout the processing period. The second condition is that switching devices corresponding to a lowest-voltage phase of the inverter undergoes a greater number of switching operations during the processing period than switching devices corresponding to an intermediate-voltage phase of the inverter. The frequency of harmonic components in AC currents flowing in the rotary machine can thereby be raised above the audible range, to suppress audible mechanical noise, without significantly increasing the amount of switching losses.

Abstract: In an apparatus, a synchronizing unit synchronizes a measurement timing of values of first and second phase currents by a current sensor with a measurement timing of a rotational angle of a rotor by a rotational angle sensor. A current calculator calculates, based on the first and second parameter signals and the rotational angle of the rotor, values of two phase currents in a rotational coordinate system defined with respect to the rotor. A transmitter transmits the values of the two phase currents using a communication protocol. A controller communicates with the transmitter using the communication protocol to receive the values of the two phase currents. The controller controls the first phase current, the second phase current, and a third phase current flowing through respective first, second, and third phase windings of a three-phase rotary machine according to the values of the two-phase currents.

Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator, a target harmonic current component flowing in a rotary machine. The target harmonic current component is included in a fundamental current component of the phase current. An inducing unit superimposes, on the phase information, a fluctuating signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component, to induce a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.

Abstract: Battery information output equipment allows a driver of an electric vehicle 10 of an electricity consumer 2, now parked, to input what battery capacity is required at two or more points of time on or before the time at which the electric vehicle is scheduled to come into use, considering an operation schedule for the vehicle, and transmits the usable capacity at each point of the times, i.e., maximum capacity minus capacity required at each point of the times, to a power supply/demand management center 3, so that charge and discharge of a battery 17 is controlled by a charge/discharge command from the power supply/demand management center 3 such that use of battery capacity for power supply and demand leveling is kept within the usable capacity at any point of the times.

Abstract: An inverter control apparatus performs PWM control of a 3-phase inverter connected to a rotary machine, by operating switching devices corresponding to respective phases. In each of successive processing periods, the PWM control is applied such as to satisfy first and second conditions. The first condition is that the state of switching devices corresponding to a highest-voltage phase of the inverter during the processing period is held fixed throughout the processing period. The second condition is that switching devices corresponding to a lowest-voltage phase of the inverter undergoes a greater number of switching operations during the processing period than switching devices corresponding to an intermediate-voltage phase of the inverter. The frequency of harmonic components in AC currents flowing in the rotary machine can thereby be raised above the audible range, to suppress audible mechanical noise, without significantly increasing the amount of switching losses.

Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator of a rotary machine, a target harmonic current component flowing in the rotary machine. The target harmonic current component correlates with a fundamental current component of a phase current. An inducing unit superimposes, on at least one of the amplitude and the phase of an output voltage vector of a power converter used by a switching unit, a harmonic signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component. This induces a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.

Abstract: In an apparatus, a controller performs, as a calculation of d- and q-axis values of a current vector, a first task and a second task. The first task expands one of a measured first phase current and another phase current into Fourier series of the corresponding phase current as a function of an electric rotational angle of an AC motor. The first task extracts a first-order component from the Fourier series to obtain first and second Fourier coefficients of the first-order component. The second task calculates the d-axis value as a first sum of the first and second Fourier coefficients to which temporally-invariant constants of a first pair have been multiplied, and the q-axis value as a second sum of the first and second Fourier coefficients to which temporally-invariant constants of a second pair have been multiplied.

Abstract: A control device of a three-phase AC motor includes: an inverter for driving the motor; a current sensor for sensing a current; and a control means for controlling the motor by switching on/off each switching element in the inverter with feeding back dq axis current calculated values to dq axis current command values, or with feeding back a torque estimated value to a torque command value. The control means includes one first order current operation part that: expands a phase current sensed value of one phase in Fourier series as a function of an electric angle; extracts a first order component of the Fourier series; operates a first order current operated value; and integrates a calculated value based on the phase current sensed value at an integral angle for k periods of the electric angle so that Fourier coefficients are calculated.

Abstract: The invention judges a total power supply/demand condition of the electricity consumers 2 as a whole according to an individual power supply/demand condition of electricity consumers 2, judges a total usable capacity of all batteries 17 according to a usable capacity of the batteries 17 of electric vehicles 10 parked at electricity consumers 2, obtains required charge/discharge amounts of all the batteries 17 according to a result of comparison of the total power supply/demand condition of the electricity consumers 2 as a whole with the total usable capacity of all the batteries 17, subjects the batteries 17 to charge/discharge controls according to the required charge/discharge amounts, the power supply/demand conditions of the electricity consumers 2, and the usable capacities of the batteries.

Abstract: A motor control system includes: a power supply; a converter; an inverter; an alternating-current motor; and a control unit that drives the motor in any one of sinusoidal PWM control, overmodulation control and rectangular wave control through operation control of the converter and the inverter. The control unit starts step-up operation of the converter when a current vector of motor current of the motor on a d-q coordinate plane becomes a current phase corresponding to motor torque, at which a system loss is equal between before and after starting the step-up operation, while the control unit supplies the direct-current voltage, supplied from the power supply, to the inverter without stepping up the direct-current voltage by the converter and performs the rectangular wave control of the motor in a state where the current phase is an optimal current phase.

Abstract: An abnormality detection circuit detects an abnormality in a power storage device. A positive electrode terminal and a negative electrode terminal respectively receive a positive electrical potential and a negative electrical potential from a converter. A power storage module includes plural cells connected in series between the positive electrode terminal and the negative electrode terminal. The abnormality detection circuit includes a voltage detection circuit and a control circuit. The voltage detection circuit detects an electrical potential of an intermediate node located at an intermediate position between the positive electrode terminal and the negative electrode terminal on a basis of a ground potential. The control circuit determines an abnormality of the power storage module based on a change in an intermediate ground potential from voltage detection circuit from the ground potential.

Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator of a rotary machine, a target harmonic current component flowing in the rotary machine. The target harmonic current component correlates with a fundamental current component of a phase current. An inducing unit superimposes, on at least one of the amplitude and the phase of an output voltage vector of a power converter used by a switching unit, a harmonic signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component. This induces a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.

Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator, a target harmonic current component flowing in a rotary machine. The target harmonic current component is included in a fundamental current component of the phase current. An inducing unit superimposes, on the phase information, a fluctuating signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component, to induce a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.