Abstract: A sealing device that can mitigate stress concentration in a bellows part when a shaft deviates as it rotates. The sealing device 100 includes a fixed part 110 fixed to an inner circumference of a shaft hole in a housing 200, a thin bellows part 120 extending from the fixed part 110 toward a surface of the shaft 300 in a bellows shape, and a sealing part 130 provided on a radially inner side of the bellows part 120. The bellows part 120 includes, on one side thereof, circumferentially alternating ridges 121 extending radially from outside to inside and grooves 122 extending radially from outside to inside, and on the other side, grooves 123 and ridges 124 that are exact backsides of the ridges 121 and grooves 122 on the one side, respectively. The bellows part 120 is formed to have a substantially equal thickness t over an entire circumference thereof.

Abstract: A subtractor subtracts an angular speed correction amount from a rotational speed command to obtain a corrected rotational speed command. An adder adds a second-axis current correction value to a ?c-axis current to obtain a corrected second-axis current. An angular ripple extraction unit obtains, from a rotational angle on a mechanical angle of a synchronous motor, a rotational angle difference being a ripple component of the rotational angle. An nth-order component extraction unit extracts nth-order components of a fundamental frequency of the rotational angle from the rotational angle difference. A torque conversion unit obtains nth-order components of an estimated value of vibration torque. A correction amount calculation unit obtains the second-axis current correction value using the nth-order components.

Abstract: A primary magnetic flux command value is changed in accordance with a torque of a rotary electric motor to control a current phase of an armature current with respect to a q axis that advances by ?/2 with respect to a d axis in phase with a field flux to be a desired phase in accordance with the torque.

Abstract: A module includes: a first diplexer including a common terminal coupled to a first antenna, a first terminal, and a second terminal; a first duplexer including a common terminal coupled to the first terminal of the first diplexer and allowing transmission and a reception signals of a first band to pass therethrough; a second duplexer including a common terminal coupled to the second terminal of the first diplexer and allowing transmission and reception signals of a second band of which a frequency band is higher than a frequency band of the first band to pass therethrough; and a third duplexer including a common terminal coupled to a second antenna different from the first antenna and allowing transmission and reception signals of a third band of which a frequency band is between the frequency band of the first band and the frequency band of the second band to pass therethrough.

Abstract: Provided is a semiconductor device having a resistor including silicide layers and a polysilicon layer with impurities, and the resistor includes a plurality of boundary surfaces between the silicide layers and the polysilicon layer in a longitudinal direction of the resistor, permitting correction with one photomask when a resistance value of a resistor is deviated from a design value while suppressing upsizing of a semiconductor device. Further, provided is a method of manufacturing the semiconductor device, in which the resistance value is adjusted by changing one mask for forming the silicide layers to change the number of boundary surfaces between the silicide layers and the polysilicon layer, and change a length of the polysilicon layer.

Abstract: Provided is a semiconductor device having a resistor including silicide layers and a polysilicon layer with impurities, and the resistor includes a plurality of boundary surfaces between the silicide layers and the polysilicon layer in a longitudinal direction of the resistor, permitting correction with one photomask when a resistance value of a resistor is deviated from a design value while suppressing upsizing of a semiconductor device. Further, provided is a method of manufacturing the semiconductor device, in which the resistance value is adjusted by changing one mask for forming the silicide layers to change the number of boundary surfaces between the silicide layers and the polysilicon layer, and change a length of the polysilicon layer.

Abstract: A dust seal includes an annular dust seal body, an annular bushing through which a shaft is slidably inserted, and an annular seal lip provided on the bushing and slidably contacting the shaft. The dust seal body includes an annular elastic attaching portion that is fitted into an opening of a receiving portion, an annular first accordion unit having an elastic accordion, and an annular second accordion unit having an elastic accordion. The first accordion unit and the second accordion unit are arranged side by side in the direction of an axis. The first accordion unit is integral with the attaching portion, is joined to the attaching portion at an outer periphery, and is bonded to the bushing at an inner periphery by vulcanization. The second accordion unit is fixed to the attaching portion at an outer periphery, and engaged with the bushing at an inner periphery.

Abstract: A sealing device that can mitigate stress concentration in a bellows part when a shaft deviates as it rotates. The sealing device 100 includes a fixed part 110 fixed to an inner circumference of a shaft hole in a housing 200, a thin bellows part 120 extending from the fixed part 110 toward a surface of the shaft 300 in a bellows shape, and a sealing part 130 provided on a radially inner side of the bellows part 120. The bellows part 120 includes, on one side thereof, circumferentially alternating ridges 121 extending radially from outside to inside and grooves 122 extending radially from outside to inside, and on the other side, grooves 123 and ridges 124 that are exact backsides of the ridges 121 and grooves 122 on the one side, respectively. The bellows part 120 is formed to have a substantially equal thickness t over an entire circumference thereof.

Abstract: A difference command generator generates a difference command equivalent to a time integral of three-phase voltage applied to an inductive load in a predetermined cycle in a complex plane. A vector command generator generates vector commands that are respectively time integrals of voltage vectors and compose the difference command. A switching signal generator generates switching signals for controlling three pairs of switches in an inverter on the basis of the vector commands. A phase-current computing unit obtains an estimated value for the three-phase current on the basis of a current flowing DC buses and the vector commands. At least two of the vector commands that are time integrals of different ones of the non-zero voltage vectors have magnitudes greater than or equal to a predetermined value corresponding to a minimum required amount of time to maintain switching patterns in order for the phase-current computing unit to detect the current.

Abstract: A module includes: a first diplexer including a common terminal coupled to a first antenna, a first terminal, and a second terminal; a first duplexer including a common terminal coupled to the first terminal of the first diplexer and allowing transmission and a reception signals of a first band to pass therethrough; a second duplexer including a common terminal coupled to the second terminal of the first diplexer and allowing transmission and reception signals of a second band of which a frequency band is higher than a frequency band of the first band to pass therethrough; and a third duplexer including a common terminal coupled to a second antenna different from the first antenna and allowing transmission and reception signals of a third band of which a frequency band is between the frequency band of the first band and the frequency band of the second band to pass therethrough.

Abstract: A module includes: a first filter connected between an antenna terminal and a first terminal and allowing a signal in a first frequency band from 2.4 to 2.5 GHz to pass therethrough; a second filter connected between the antenna terminal and a second terminal and allowing a signal in a second frequency band from 5.0 to 6.0 GHz to pass therethrough; a switch selecting and connecting a first or second port to the antenna; a third filter connected between the first port and a third terminal and allowing a signal in a third frequency band between the first and second frequency bands to pass therethrough; and a fourth filter connected between the second port and a fourth terminal and allowing a signal in a fourth frequency band that is between the first and second frequency bands and partially overlaps or is continuous with the third frequency band to pass therethrough.

Abstract: A communication device performs information communication through a communication line based on communication data specified by a CAN protocol. A communication necessity determination unit determines whether or not the information communication through the communication line is necessary based on external information obtained from an external device. When the information communication is necessary and a communication error is detected, a communication control unit stops the information communication during a fixed period and restarts the information communication after the fixed period elapses. When the information communication is unnecessary, the communication control unit stops transmitting communication data until a predetermined transmission restarting condition is satisfied.

Abstract: An electric motor controller includes a first coordinate conversion unit that converts a three-phase current into a current in a ?c-?c rotating coordinate system, a first calculation unit that obtains a first term, a second calculation unit that obtains a voltage command value in the ?c-?c rotating coordinate system as a sum of the first term and a second term, a second coordinate conversion unit that coordinate-converts the voltage command value into a voltage command value of a voltage to be applied to a rotary electric motor in another coordinate system.

Abstract: The object of the present invention is to effectively prevent the rust generation on a flange portion and to prevent the deformation of the flange portion due to the filling pressure of a molding material in the manufacture of a sealing device whereby a seal main body comprising a rubber-like elastic material and having a portion that covers both surfaces of the flange portion of a metal reinforcing ring is integrally formed on the reinforcing ring by means of a metal mold. To this end, the flange portion of the reinforcing ring is formed in advance with a shape which is distributed unevenly in the direction opposite the direction in which the flange portion is deformed from its original shape by the filling pressure of the molding material.

Abstract: A semiconductor device has a body layer disposed in a semiconductor substrate, cell regions arranged around a surface layer part of the body layer, and trenches arranged in a grid pattern for separating the cell regions from each other. A gate insulating film covers inner walls of the first trenches and an inner wall of the second trench, and a gate electrode is filled in the first trenches and the second trench covered by the gate insulating film. A cell circumferential region is disposed to surround an outer side of the second trench. An interlayer insulating film is disposed on the cell regions, the first trenches, and the second trench. A gate contact hole is disposed in the interlayer insulating film at an intersection of the first trenches arranged in the grid pattern. A gate wiring is connected to the gate electrode via the gate contact hole.

Abstract: A difference command generator generates a difference command equivalent to a time integral of three-phase voltage applied to an inductive load in a predetermined cycle in a complex plane. A vector command generator generates vector commands that are respectively time integrals of voltage vectors and compose the difference command. A switching signal generator generates switching signals for controlling three pairs of switches in an inverter on the basis of the vector commands. A phase-current computing unit obtains an estimated value for the three-phase current on the basis of a current flowing DC buses and the vector commands. At least two of the vector commands that are time integrals of different ones of the non-zero voltage vectors have magnitudes greater than or equal to a predetermined value corresponding to a minimum required amount of time to maintain switching patterns in order for the phase-current computing unit to detect the current.

Abstract: A primary magnetic flux command value is changed in accordance with a torque of a rotary electric motor to control a current phase of an armature current with respect to a q axis that advances by ?/2 with respect to a d axis in phase with a field flux to be a desired phase in accordance with the torque.

Abstract: Provided are a battery protection IC and a battery device, which are capable of ensuring safety even when a charger is connected in a reverse direction. The battery protection IC includes a first switch element provided between an overcurrent detection terminal and a VDD terminal so that, when the charger is connected with reverse polarity, the first switch element interrupts a current path between the overcurrent detection terminal and the VDD terminal. The battery protection IC further includes a second switch element provided between a charge control terminal and the VDD terminal so that, when the charger is connected with reverse polarity, the second switch element interrupts a current path between the charge control terminal and the VDD terminal.

Abstract: An electric motor controller includes a first coordinate conversion unit that converts a three-phase current into a current in a ?c-?c rotating coordinate system, a first calculation unit that obtains a first term, a second calculation unit that obtains a voltage command value in the ?c-?c rotating coordinate system as a sum of the first term and a second term, a second coordinate conversion unit that coordinate-converts the voltage command value into a voltage command value of a voltage to be applied to a rotary electric motor in another coordinate system.

Abstract: A carrier generating unit applies a carrier that monotonically decreases to a switching control unit during either one of a first period that is a period immediately following a period in which a voltage command value is a value not more than a minimum value of the carrier, the voltage command value taking a first predetermined value larger than the minimum value of the carrier in the first period, and a second period that is a period immediately preceding a period in which the voltage command value is not less than a maximum value of the carrier, the voltage command value taking a second predetermined value smaller than the maximum value in the second period.