Abstract: A rotary compressor includes a cylindrical casing, an electric motor, and a compression mechanism. The cylindrical casing has first and second end plates ends in an axial direction. The electric motor is a variable-speed electric motor. The electric motor is disposed in the casing in which a first space is sandwiched between the electric motor and the first end plate. The compression mechanism is disposed in the casing in which a second space is sandwiched between the compression mechanism and the electric motor. The compression mechanism is coupled with the electric motor. The rotational compressor satisfies 0.8?(A+B)*D2/(Vcc*Nmax)?1.0. An axial length of the first space is A, an axial length of the second space is B, an inner diameter of the casing is D, a suction volume per rotation of the compression mechanism is Vcc, and a maximum rotational speed of the compression mechanism is Nmax.

Abstract: A core piece includes a first member in a column form and a second member in a plate form, the first member and the second member being configured by a green compact in which the first member and the second member are integrally formed, the green compact includes a plurality of soft magnetic particles having a flat shape, a first average aspect ratio of the soft magnetic particles is greater than or equal to 1.2 in a first cross section of the first member, a second average aspect ratio of the soft magnetic particles is greater than or equal to 1.2 in a second cross section of the second member, each of the first average aspect ratio and the second average aspect ratio is related to an average of lengths of soft magnetic particles in a direction of the stator core.

Abstract: A management device includes: a first communication unit that receives state data of an energy storage device; a second communication unit that receives identification data transmitted from a host device; an external terminal to which a switch is connected and which receives an input from the switch; a state detection unit that detects a state of the switch via the external terminal; and a processing unit that stores the identification data in a storage unit when the second communication unit receives the identification data and the state detection unit detects that the switch is in a specific state, in which the state data received by the first communication unit is transmitted to the host device or another device in association with the identification data stored in the storage unit.

Abstract: According to an aspect of the present invention, a vehicle control device, a vehicle control method, and a vehicle control system acquire a setting condition including at least one of information related to a driving environment of a driving road on which a vehicle travels and information related to a state of the vehicle; set, based on the setting condition, an interval between trajectory points representing a target trajectory along which the vehicle is caused to travel; and output a control command that causes the vehicle to travel along the target trajectory. This makes it possible to prevent the driving performance of a vehicle from decreasing even when the conditions surrounding the vehicle change.

Abstract: A high-frequency power supply apparatus includes the following elements. A first power supply outputs a first high-frequency voltage with a first fundamental frequency. A second power supply outputs a second high-frequency voltage with a second fundamental frequency lower than the first fundamental frequency. A second matching device is connected between the second power supply and the load. The second matching device generates a timing control signal with a frequency lower than the second fundamental frequency. The first power supply generates a modulation signal by applying a start phase and a frequency shift amount to a modulation fundamental wave signal whose frequency is equal to the second fundamental frequency. The start phase is applied to the modulation fundamental wave signal in accordance with an input timing of the timing control signal. The first power supply performs frequency modulation on the first high-frequency voltage by using the modulation signal.

Abstract: Provided is an axial gap-type rotary electric machine in which a first stator, a second stator, and a rotor are arranged in a direction of a rotary shaft of the rotor. The first stator includes a first coil and a first core. The second stator includes a second coil and a second core. The first core includes an annular first yoke, a plurality of first teeth, and a first mark indicating a reference position in a circumferential direction of the first yoke. The second core includes an annular second yoke, a plurality of second teeth, and a second mark indicating a reference position in a circumferential direction of the second yoke. When viewed in the direction of the rotary shaft, the first mark and the second mark are symmetrically positioned with respect to the rotary shaft.

Abstract: A core piece that is circularly arranged to construct a stator core of an axial gap type rotary electric machine includes: a first member in a column form extending in an axial direction of the stator core; a second member in a plate form disposed on a first end side of the axial direction in the first member; and a third member in a plate form disposed on a second end side of the axial direction in the first member, the first member has a peripheral surface connecting with the second member and the third member, the second member has a protruding portion projecting outwardly from the peripheral surface of the first member, the third member has a protruding portion projecting outwardly from the peripheral surface of the first member, and the first member, the second member, and the third member are configured by an integrally molded green compact.

Abstract: A core used in an axial-gap rotating electric device includes an annular back yoke and a plurality of teeth protruding in an axial direction that is perpendicular to a first flat surface of the back yoke. The plurality of teeth are provided on the first flat surface at intervals in a circumferential direction. The back yoke and the teeth are constituted of an integrally-molded powder compact. A first curved section that connects a peripheral surface of each tooth and the first flat surface of the back yoke is provided at a corner between the tooth and the back yoke. The first curved section has a curvature radius ranging between 0.2 mm and 1.5 mm inclusive.

Abstract: A velocity deviation measuring device includes: a laser driver that causes a semiconductor laser to oscillate; a counting portion that counts run lengths of binary signals wherein interference waveforms included in the output of a photodiode that converts the output of the semiconductor laser into an electric signal have been binarized; and a calculating portion that calculates the deviation in the surface velocity of a web from the counting result by the counting portion. The counting portion binarizes the interference waveform synchronized to a sampling clock, measures the respective run lengths of the binary signal during a reference interval and a comparison interval, creates respective frequency distributions of the run lengths for the reference interval and the comparison interval, and calculates, respectively, for the reference interval and the comparison interval, the total numbers of run lengths that are at or above a threshold value Th, from the frequency distribution.

Abstract: A velocity deviation measuring device includes: a laser driver that causes a semiconductor laser to oscillate; a counting portion that counts run lengths of binary signals wherein interference waveforms included in the output of a photodiode that converts the output of the semiconductor laser into an electric signal have been binarized; and a calculating portion that calculates the deviation in the surface velocity of a web from the counting result by the counting portion. The counting portion binarizes the interference waveform synchronized to a sampling clock, measures the respective run lengths of the binary signal during a reference interval and a comparison interval, creates respective frequency distributions of the run lengths for the reference interval and the comparison interval, and calculates, respectively, for the reference interval and the comparison interval, the total numbers of run lengths that are at or above a threshold value Th, from the frequency distribution.

Abstract: A tension/speed measuring device comprises a laser driver for driving the oscillation of a semiconductor laser, and a counter for counting interference waveforms included in the output of a photodiode for converting the output of the semiconductor laser into an electrical signal. The counter measures the periods of interference waveforms during a measuring interval, where a frequency distribution for the periods of the interference waveforms during the measuring interval is generated from the measuring results, where a class value wherein the product of the class value and the frequency is a maximum is used as a representative value D0 at the periods of the interference waveform, to calculate a total Ns of the frequencies of the classes that are less than 0.5 times the representative value T0 and to calculate a total Nwn of the frequencies of the classes that are equal to or greater than (n+0.5) times the representative value T0 and less than (n+1.

Abstract: A physical quantity sensor includes a semiconductor laser for irradiating an object with a laser beam, and a laser driver for operating the semiconductor laser in such a way that a first oscillation period for which the oscillation wavelength increases and/or a second oscillation period for which the oscillation wavelength decreases is repetitively present. The sensor further includes a photodiode and a current-voltage conversion amplifying unit both for detecting an MHP containing an interference waveform formed by the self-coupling effect between the laser beam and the returning light beam from the object, a MHP extracting unit for measuring the period of the interference waveform contained in the output signal from the current-voltage conversion amplifying unit each time the interference waveform is inputted, and a computing unit for computing the displacement and/or the speed of the object from the measured individual period MHP extracting unit.

Abstract: A velocity measuring device emitting a laser beam at a web; a photodiode converting an optical output of the laser into an electric signal; a laser driver operating the laser to alternate a first emitting interval wherein the oscillating wavelength increases and a second emitting interval wherein the oscillating wavelength decreases; a current-voltage converting/amplifying portion converting the electric current from the photodiode into a voltage; a filter portion removing a carrier wave from the output of the current-voltage converting/amplifying portion; a signal extracting portion calculating a number of interference waveforms in the output of the filter portion; and a calculator calculating the velocity of the web based on the result of the extracting portion. The laser driver operates so the absolute values for the rates of change, in respect to time, of the oscillating wavelengths during the first emitting interval and during the second emitting interval are different.

Abstract: A signal evaluating device includes a binarizing device binarizing an input signal, a run length measuring device measuring a run length of a sign when there is a change in the sign that is the result of binarization of the input signal during an evaluating interval, using an output of the binarizing device as input, and an evaluating device calculating, from a measurement results of the run length measuring device, a distribution wherein a noise frequency distribution included in the input signal during the evaluating interval is assumed to be a geometric distribution, and evaluating whether or not the input signal is valid from a proportion of a total frequency of noise, obtained from the calculated distribution, and a total frequency that is the number of run lengths in the evaluating interval.

Abstract: A counter counts the run lengths of a binarized signal. A counting result correcting portion generates frequency distributions for run lengths for first run lengths, which are from a rising edge to a falling edge of the signal, and second run lengths, which are for a falling edge to a rising edge of the signal, calculates a total number of first run lengths of lengths that are no less than 0 times and less than 1 times a representative value for the first run lengths, calculates a total number of second run lengths of lengths that are no less than 0 times and less than 1 times a representative value for the second run lengths, calculates a total number of first run lengths, calculates a total number of second run lengths, and corrects the counting results.

Abstract: A physical quantity sensor includes: a semiconductor laser which emits laser light to a measurement target; an oscillation wavelength modulating device that operates the semiconductor laser such that at least one of a first oscillation period and a second oscillation period alternately exists; a detector that detects an electrical signal including interference waveforms, the interference waveforms being caused by a self-coupling effect of the laser light and return light from the measurement target; a signal extracting device that measures each cycle of the interference waveforms whenever the interference waveform is input; a cycle correcting device that compares each cycle of the interference waveforms with a reference cycle to correct the cycles of the interference waveforms; and a calculating device that calculates at least one of displacement and velocity of the measurement target based on each of the cycles of the interference waveforms corrected by the cycle correcting device.

Abstract: The counting device includes: a signal counter that counts the number of half cycles of input signals during given counting periods; a signal half cycle measurement unit that measures the half cycles; a frequency distribution generator that generates a frequency distribution of the half cycles; a representative value calculator configured to calculate a representative value of a distribution of the half cycles; a correction value calculator configured to calculate a total number Ns and a total number Nwn so as to correct the number of the half cycles, wherein Ns represents the total of the number of the half cycles that are less than 0.5 times the represent value, and Nwn represents the total of the number of the half cycles that are equal to or greater than 2n and less than (2n+2) times the representative value.

Abstract: The velocity calculating device includes a semiconductor laser for emitting a laser beam at a web that is the subject to be measured; a photodiode for converting into an electric signal the optical power of the semiconductor laser; a lens for focusing and emitting the beam from the semiconductor laser and for focusing the return light from the web and injecting it into the semiconductor laser; a laser driver for driving the semiconductor laser; a current-voltage converting/amplifying portion for converting the output current from the photodiode into a voltage and then amplifying; a filter portion for removing the carrier wave from the output voltage of the current-voltage converting/amplifying portion; a signal extracting portion for counting the number of interference waveforms included in the output voltage of the filter portion; and a calculating portion for calculating the velocity of the web based on the counting result of the signal extracting portion.

Abstract: A physical quantity sensor includes a semiconductor laser for irradiating an object with a laser beam, and a laser driver for operating the semiconductor laser in such a way that a first oscillation period for which the oscillation wavelength increases and/or a second oscillation period for which the oscillation wavelength decreases is repetitively present. The sensor further includes a photodiode and a current-voltage conversion amplifying unit both for detecting an MHP containing an interference waveform formed by the self-coupling effect between the laser beam and the returning light beam from the object, a MHP extracting unit for measuring the period of the interference waveform contained in the output signal from the current-voltage conversion amplifying unit each time the interference waveform is inputted, and a computing unit for computing the displacement and/or the speed of the object from the measured individual period MHP extracting unit.

Abstract: The counting device includes: a signal counter that counts the number of half cycles of input signals during given counting periods; a signal half cycle measurement unit that measures the half cycles; a frequency distribution generator that generates a frequency distribution of the half cycles; a representative value calculator configured to calculate a representative value of a distribution of the half cycles; a correction value calculator configured to calculate a total number Ns and a total number Nwn so as to correct the number of the half cycles, wherein Ns represents the total of the number of the half cycles that are less than 0.5 times the represent value, and Nwn represents the total of the number of the half cycles that are equal to or greater than 2n and less than (2n+2) times the representative value.