Abstract: A power converter includes: a multiphase inverter circuit including a plurality of switching elements; a plurality of current sensors each configured to detect a current of the inverter circuit and output a value of the current detected; a terminal voltage detector configured to detect a voltage of each terminal of a load connected to the inverter circuit and output a value of the voltage detected; a switching element drive circuit configured to control the plurality of switching elements of the inverter circuit according to a switching pattern given; a fault detector configured to detect a fault in the inverter circuit or the plurality of current sensors; and a fault identifier configured to, after the fault detector detects the fault, switch the switching pattern to be given to the switching element drive circuit according to types of faults detectable by the fault detector, and perform identification processing of identifying a type and a location of the fault in the inverter circuit or the plurality of cu

Abstract: A control device for an electric power steering device includes an inverter converting direct current voltage into alternating current voltage, and apply to a synchronous motor; and a controller for converting three-phase current flowing in the synchronous motor into d-axis and q-axis currents, performing proportional integral control for a deviation between q-axis current command and the q-axis current so that the q-axis current follows the q-axis current command, to calculate q-axis voltage command, performing proportional integral control to calculate d-axis voltage command, converting the d-axis and q-axis voltage commands into three-phase voltage command, and controlling the inverter based on the three-phase voltage command. A q-axis proportional gain used in the proportional integral control for the q-axis current is obtained using a time constant of a q-axis current control system, a q-axis or d-axis inductance, and a constant greater than zero and less than one.

Abstract: A light detector is configured such that a light receiving portion having APDs and a peripheral portion are provided on a first principal surface of a p-type semiconductor substrate, and further includes a back electrode provided on a second principal surface of the semiconductor substrate and a p-type first separation portion provided between the light receiving portion and the peripheral portion. The APD has, on a first principal surface side, an n-type region and a p-epitaxial layer contacting the n-type region in a Z-direction. The peripheral portion has an n-type MISFET provided at a p-well and an n-well provided to surround entire side and bottom portions of the p-well.

Abstract: There is provided a metal plate antenna transmitting and receiving wireless signals conforming to a prescribed communication standard, wherein an antenna width is designed to satisfy radiation resistance achieving a prescribed standing wave ratio in a resonant mode in which a loop length of the metal plate antenna is 1.5 wavelength of a wireless signal conforming to the prescribed communication standard.

Abstract: When a module controller of a battery system detects an abnormality of a battery module, the module controller selects the battery module without stopping the battery module. After that, the module controller compares a current value of a current supplied to a load, with a total value of rated currents of all battery modules that are normal and that are supplying power to the load. When the current value of the current supplied to the load is greater than the total value of the rated currents of the battery modules, the module controller performs a control to stop all the battery modules. When the current value of the current supplied to the load is less than or equal to the total value of the rated currents of all the battery modules that are supplying power to the load, the module controller performs a control to stop the abnormal battery module and not to stop the normal battery modules.

Abstract: To provide a controller for motor which can reduce a torque ripple up to high frequency, without amplifying unnecessary noise and vibration. A controller for motor estimates an interlinkage flux based on the applied voltage and the detection value of current; estimates an output torque based on the detection value of current and the estimation value of interlinkage flux; extracts a pulsation component from the estimation value of output torque; calculates a voltage command correction value based on the extraction value of pulsation component; calculates a voltage command after superimposing by superimposing the voltage command correction value on the voltage command basic value; and applies voltage to winding based on the voltage command after superimposing.

Abstract: A permanent-magnet-synchronous electric motor control device includes: a reference voltage value calculation unit for calculating a reference voltage value; an output voltage value calculation unit for calculating an output voltage value on the basis of a voltage command; a current weakening command calculation unit for calculating a current weakening command on the basis of the reference voltage value and the output voltage value; a voltage command calculation unit for calculating the voltage command on the basis of the current weakening command; and a power converter for supplying power to a permanent-magnet-synchronous electric motor on the basis of the voltage command. The current weakening command calculation unit calculates the current weakening command in which a high-frequency component is amplified on the basis of the difference between the reference voltage value and the output voltage value.

Abstract: A quartz glass plate has a quartz glass plate body and a quartz glass member adhered to the quartz glass plate body through an adhesive layer, where the adhesive layer contains silica, and a sum of concentrations of Li, Na, and K ions, being alkali metal ions and Ca ions, being alkaline earth metal ions contained in the adhesive layer is 10 ppm by mass or less. Consequently, a step with a uniform thickness can be formed, and a quartz glass plate is not easily damaged by irradiation with a light containing an ultraviolet ray.

Abstract: A fuel cell system for a load device may include a fuel cell, a battery, and a controller configured to control the fuel cell and the battery. The controller may be configured to: cumulatively calculate first accumulated electric energy generated by the fuel cell; cumulatively calculate a power generation efficiency average at the time of storage of the first accumulated electric energy; calculate required power generation efficiency to generate electric power that meets a power demand of the load device; under a first condition where the power generation efficiency average is lower than the required power generation efficiency, cause the fuel cell to generate electric power that meets the power demand; and under a second condition where the power generation efficiency average is higher, cause the fuel cell to generate electric power at a specific operating point and cause the battery to discharge deficient electric power.

Abstract: A rotating machine control device comprises: a first inverter that applies an alternating-current voltage to three-phase windings of a first system included in a rotating machine, based on a first direct-current voltage that has been output from a direct-current power supply of the first system; a second inverter that applies an alternating-current voltage to three-phase windings of a second system included in the rotating machine, based on a second direct-current voltage that has been output from a direct-current power supply of the second system; a first controller; and a second controller, in that the first controller and the second controller each limit an own system voltage command related to a voltage to be applied to the three-phase windings of an own system by use of a direct-current voltage of an other system, in a case where a direct-current voltage of the own system is higher than the direct-current voltage of the other system, and also generate a value obtained by normalizing the own system voltag

Abstract: To provide a controller for rotary machine which can reduce the effective value of the bus line AC component, by utilizing the degree of freedom that two set of armature windings and two sets of inverters are provided, without necessity to synchronize the on/off control timing of the switching devices of first set, and the on/off control timing of the switching devices of second set. A controller for rotary machine calculates the utilization factor setting command which makes the utilization factor ratio change from 1 to 1 so that an effective value of a bus line AC component which is an AC component superimposed on a bus current which flows through a bus line connecting between the DC power source and the two set of inverters becomes lower than a case where the utilization factor ratio is 1 to 1.

Abstract: A rotary machine control device includes: a first inverter that applies an alternating-current voltage to three-phase windings of a first system included in a rotary machine, according to a first direct-current voltage; a second inverter that applies an alternating-current voltage to three-phase windings of a second system included in the rotary machine; a first controller that generates a command value of a d-axis electric current of the first system, according to a direct-current voltage minimum value and a command value of the rotary machine, the direct-current voltage minimum value being a lower one of the first direct-current voltage and the second direct-current voltage, that generates a command value of a q-axis electric current of the first system, according to the direct-current voltage minimum value and the command value of the d-axis electric current of the first system, and that controls the first inverter, according to the command value of the d-axis electric current of the first system and the c

Abstract: To provide a controller for rotary electric machine and an electric power steering apparatus which can set a control gain which is used for controlling the d-axis current command value based on the q-axis current deviation between the current command value of q-axis and the current detection value of q-axis, considering the response of the current of q-axis. A controller for rotary electric machine changes the current command value of d-axis, based on a value obtained by multiplying a proportional gain to a q-axis current deviation which is a deviation between the current command value of q-axis and the current detection value of q-axis; and changes the proportional gain in inverse proportion to the rotational angle speed.

Abstract: A modulation control unit calculates a voltage offset on the basis of fundamental or basic voltage references, and calculates modification voltage references by performing superposition of the voltage offset on the basic voltage references; and an inverter converts, on the basis of the modification voltage references calculated by the modulation control unit, a DC voltage into three-phase voltages whose voltages are applied to three-phase windings of an alternating current rotating machine, wherein, in a case in which the basic voltage references are transformed into three-phase voltage references, and when the three-phase voltage references are defined as a maximum phase, an intermediate phase and a minimum phase in decreasing order of value, the modulation control unit calculates a first voltage offset on the basis of the DC voltage, on that of the maximum phase, and on that of sum of squares of the basic voltage references.

Abstract: To provide a controller for rotary electric machine and an electric power steering apparatus which can increases decreases an increase amount of the current of d-axis in the negative direction appropriately, and can perform the weakening magnetic flux appropriately, irrespective of increase and decrease in the rotational angle speed, without using the information on the inductance and the interlinkage flux of the rotor. A controller for rotary electric machine, in a case where the current command value of q-axis is a positive value, changes the current command value of d-axis, based on a deviation between an offset q-axis current command value obtained by subtracting the q-axis offset value of the positive value from the current command value of q-axis, and the current detection value of q-axis.

Abstract: A sealing device includes a seal housing disposed between a cylinder and a rod, an inner seal disposed between the rod and the seal housing, the inner seal being in contact with the rod, and an outer seal disposed between the inner seal and the seal housing, the outer seal being in contact with both the inner seal and the seal housing, in which one of the outer seal and the seal housing has a contact face that is in contact with the other of the outer seal and the seal housing, and the contact face has a concave portion.

Abstract: An electric motor control device, capable of suppressing a torque ripple even when electrical characteristics on a motor have errors or variations, comprises: a fundamental electric-current instruction generator for outputting d-axis and q-axis fundamental electric-current instructions for outputting fundamental torque from the motor having saliency; a position dependency component generator for outputting a position dependency component(s) of the motor according to its rotational position; an electric current correction instruction calculator for calculating d-axis and q-axis current correction instructions from the d-axis and q-axis fundamental electric-current instructions, and the position dependency component(s); an electric current correction instruction superposition unit for generating d-axis and q-axis current instructions by performing superposition of the d-axis and q-axis current correction instructions on the d-axis and q-axis fundamental electric-current instructions; and an electric current con

Abstract: One aspect is a method for producing a multilayered silica glass body. The method involves producing a multilayered silica glass body in which a transparent silica glass layer is provided on the surface of a siliceous substrate made of a siliceous material. The method includes preparing the siliceous substrate, preparing a silica slurry in which silica particles are dispersed in a liquid, applying the silica slurry to the surface of the siliceous substrate, leveling the silica slurry applied to the surface of the siliceous substrate by applying vibration to the siliceous substrate, drying the leveled silica slurry, and vitrifying the dried silica slurry by heating to form a transparent silica glass layer. As a result, a transparent silica glass layer of uniform thickness is obtained at excellent yield, and a method for producing a multilayered silica glass body easily in a short time is provided.

Abstract: Even using the redundant system resolver in which the magnetic interference between systems occurs, to provide an angle detection apparatus which can reduces the influence of the magnetic interference and can calculate the rotational angle with good accuracy, without performing synchronous control between systems in real time. An angle detection apparatus is provided with a resolver which has the first system windings and the second system windings in which magnetic interference occurs between systems; a first system removal processing unit that performs a second cycle component removal processing which removes component of the second cycle of the second system, to detection values of the first system winding output signals; and a first system angle calculation unit that calculates a first angle of rotor, based on the detection values of the first system winding output signals after the second cycle component removal processing.

Abstract: [Problem] If lidocaine is composed of non-aqueous patch, the adhesive power of the preparation tends to get lower, as the composition amount of lidocaine is higher. It is popular to solve lidocaine in dissolving agent in order to compose lidocaine in patch and release effective amount into skin. However, if the amount of dissolving agent gets higher, the adhesive power gets extremely lower, so that an long-time attachment is difficult. [Solution] A non-aqueous patch comprising lidocaine and/or its reactant, and a dissolving agent which are contained in a base of plaster, the plaster being hold by a support, of which strength of 50% stretched to longitudinal direction is less than 2000 g/50 mm and of biaxially-oriented stretch cloth.