Abstract: The present embodiment relates to a light emission device capable of removing zero-order light from output light of an S-iPM laser. The light emission device comprises an active layer and a phase modulation layer. The phase modulation layer includes a base layer and a plurality of modified refractive index regions. In a state in which a virtual square lattice is set on the phase modulation layer, a center of gravity of each modified refractive index region is separated from a corresponding lattice point, and a rotation angle around each lattice point that decides a position of the center of gravity of each modified refractive index region is set according to a phase distribution for forming an optical image. A lattice spacing and an emission wavelength satisfy a condition of M-point oscillation in a reciprocal lattice space of the phase modulation layer.

Abstract: A microcomputer stores an offset correction value for correcting an offset of a detected current along with a pulse shift for each of a detected current of a maximum phase to which power is supplied for the longest time among three phases and a detected current of a minimum phase to which power is supplied for the shortest time among the three phases, and corrects the detected current of each of the phases with use of the stored offset correction values for the detected current of the maximum phase and the detected current of the minimum phase.

Abstract: An applied voltage decision unit 510 performs in parallel, a process of determining three-phase AC commands V1u* to V1w* of a voltage applied to a motor by an inverter based on a position, of a rotor of a motor, detected by a position sensor with an output A, and a process of determining three-phase AC commands V2u* to V2w* of the voltage applied to the motor by the inverter based on a neutral point voltage VN of the motor. A PWM modulator 507 alternately outputs a PWM signal according to the three-phase AC commands V1u* to V1w* and a PWM signal according to the three-phase AC commands V2u* to V2w* to the inverter. A control device determines whether or not the position sensor with the output A has failed by comparing the position, of the rotor, detected by the position sensor with the output A with a position, of the rotor, estimated from a neutral point voltage VN of the motor.

Abstract: A microcomputer stores an offset correction value for correcting an offset of a detected current along with a pulse shift for each of a detected current of a maximum phase to which power is supplied for the longest time among three phases and a detected current of a minimum phase to which power is supplied for the shortest time among the three phases, and corrects the detected current of each of the phases with use of the stored offset correction values for the detected current of the maximum phase and the detected current of the minimum phase.

Abstract: Provides are a control device for a three-phase synchronous motor in which a position detection accuracy of a rotor can be improved when one three-phase synchronous motor is driven by a plurality of inverters, and an electric power steering device using the same. A control device for a three-phase synchronous motor includes: a three-phase synchronous motor including a first three-phase winding and a second three-phase winding; a first inverter connected to the first three-phase winding; a second inverter connected to the second three-phase winding; a first control device that controls the first inverter on the basis of a rotor position of the three-phase synchronous motor; and a second control device that controls the second inverter on the basis of the rotor position of the three-phase synchronous motor. The first control device estimates the rotor position on a basis of a neutral point potential of the first three-phase winding and a neutral point potential of the second three-phase winding.

Abstract: Provides are a control device for a three-phase synchronous motor in which a position detection accuracy of a rotor can be improved when one three-phase synchronous motor is driven by a plurality of inverters, and an electric power steering device using the same. A control device for a three-phase synchronous motor includes: a three-phase synchronous motor including a first three-phase winding and a second three-phase winding; a first inverter connected to the first three-phase winding; a second inverter connected to the second three-phase winding; a first control device that controls the first inverter on the basis of a rotor position of the three-phase synchronous motor; and a second control device that controls the second inverter on the basis of the rotor position of the three-phase synchronous motor. The first control device estimates the rotor position on a basis of a neutral point potential of the first three-phase winding and a neutral point potential of the second three-phase winding.

Abstract: An applied voltage decision unit 510 performs in parallel, a process of determining three-phase AC commands V1u* to V1w* of a voltage applied to a motor by an inverter based on a position, of a rotor of a motor, detected by a position sensor with an output A, and a process of determining three-phase AC commands V2u* to V2w* of the voltage applied to the motor by the inverter based on a neutral point voltage VN of the motor. A PWM modulator 507 alternately outputs a PWM signal according to the three-phase AC commands V1u* to V1w* and a PWM signal according to the three-phase AC commands V2u* to V2w* to the inverter. A control device determines whether or not the position sensor with the output A has failed by comparing the position, of the rotor, detected by the position sensor with the output A with a position, of the rotor, estimated from a neutral point voltage VN of the motor.

Abstract: Provided is a control apparatus for a power steering apparatus, and a power steering apparatus using it that can reduce electromagnetic noise with the aid of a spread spectrum, thereby realizing stabilized motor control.

Abstract: Provided is a control apparatus for a power steering apparatus, and a power steering apparatus using it that can reduce electromagnetic noise with the aid of a spread spectrum, thereby realizing stabilized motor control.

Abstract: Provided are a power steering device and a control device for a power steering device, which are capable of reducing power consumption. The power steering device includes a current detection number setting circuit configured to set the number of times of detection of a DC bus current value by a current detecting circuit to a first predetermined number over a first predetermined cycle of a PWM period when the steering-state signal indicative of a steering operation state is received, and to set the number of times of detection so that the number of times of detection becomes smaller than the first predetermined number over the first predetermined cycle of the PWM period when a steering-state signal indicative of a non-steered state is received.

Abstract: A transverse gradient current Ic which is larger than a basic assist current Ib is outputted, as a current command value, to motor driving section when direction correspondence judgment section 11 judges that rotation directions of first and second rotation angle signals ?1 and ?2 correspond with each other, when an advancing phase judgment section 12 judges that a phase of the second rotation angle signal is advanced, and when a phase variation judgment section 14 judges that a phase advance state of the second rotation angle signal ?2 continues.

Abstract: Provided are a power steering device and a control device for a power steering device, which are capable of reducing power consumption. The power steering device includes a current detection number setting circuit configured to set the number of times of detection of a DC bus current value by a current detecting circuit to a first predetermined number over a first predetermined cycle of a PWM period when the steering-state signal indicative of a steering operation state is received, and to set the number of times of detection so that the number of times of detection becomes smaller than the first predetermined number over the first predetermined cycle of the PWM period when a steering-state signal indicative of a non-steered state is received.

Abstract: A transverse gradient current Ic which is larger than a basic assist current Ib is outputted, as a current command value, to motor driving section when direction correspondence judgment section 11 judges that rotation directions of first and second rotation angle signals ?1 and ?2 correspond with each other, when an advancing phase judgment section 12 judges that a phase of the second rotation angle signal is advanced, and when a phase variation judgment section 14 judges that a phase advance state of the second rotation angle signal ?2 continues.

Abstract: The present invention relates to a joint structure for joining an end of an outer conductor of a coaxial cable in which the outer conductor including a plurality of outer core wires is coaxially and integrally formed with and around an inner conductor via an insulation inner coat with a terminal, a joint end is formed by bending the plurality of outer core wires in a direction crossing a longitudinal direction of the cable, and a joint portion is formed by joining the joint end with a conductor connection portion of the terminal disposed in a direction crossing an axial direction of the cable.

Abstract: Electric power steering system has steering mechanism; input and output shaft side rotation angle sensors detecting rotation angles of input and output shafts; operation circuit calculating command current for an electric motor; rotation direction judging circuit judging whether rotation directions of the input and output shafts are identical; advanced-phase judging circuit judging which phase of input and output shaft side rotation angle signals (S1, S2) is advanced; normal/reverse input judging circuit judging that (i) when both rotation directions are identical and S1 is advanced, input is normal input and (ii) when both rotation directions are identical and S2 is advanced, input is reverse input; and command current correcting circuit. The command current correcting circuit corrects the command current so that when the normal input is judged, torque in the same direction as input shaft rotation direction generated by the electric motor is greater than a case of reverse input judgment.

Abstract: The present invention is intended to provide an enhanced conductor module capable of reducing a joint area between conductors, and a method for preparing the same. The conductor module has a pair of flattened circuits each of which comprises a rectangular shaped conductors, a pair of sheeted coverings disposed on both sides of the conductor, and at least one hole having a diameter smaller than a width of the conductor, and formed in the coverings so as to expose one surface of the conductor to outside the flattened circuit. The conductor of one flattened circuit is joined to the conductor of the other flattened circuit via the hole by application of electromagnetic welding.

Abstract: The present invention is intended to provide an enhanced conductor module capable of reducing a joint area between conductors, and a method for preparing the same. The conductor module has a pair of flattened circuits each of which comprises a rectangular shaped conductors, a pair of sheeted coverings disposed on both sides of the conductor, and at least one hole having a diameter smaller than a width of the conductor, and formed in the coverings so as to expose one surface of the conductor to outside the flattened circuit. The conductor of one flattened circuit is joined to the conductor of the other flattened circuit via the hole by application of electromagnetic welding.

Abstract: In a power steering system, the steering state of wheels is detected based on the steering speed to judge as to whether the steering state is in turning of the steering wheel or holding of steering speed is the steering wheels. At the time of the steering operation state, the control is executed so that a difference between a torque command value to an electric motor and the actual torque thereof will become smaller. Also, at the time of the holding operation state, the control is executed so that a difference between the revolution speed of the electric motor and a revolution-speed command value thereto will become smaller.

Abstract: There is provided a power steering system including an electric motor for generating a steering force in response to an command value, and a controller for generating the command value to the electric motor. Here, the controller generates the command value in correspondence with steering state of wheels, thereby controlling torque or rotation number of the electric motor.

Abstract: A door weather strip capable of surely closing a gap between a door of a motor vehicle and a door opening portion of a vehicle body while exhibiting excellent sealing properties with good appearance. The door weather strip includes a base portion for attachment to an outer periphery of the door, and a seal portion which is integrally formed with the base portion for contacting the door opening portion. The seal portion includes a main seal and a sub-seal which is provided on an outer side of the main seal. The sub-seal has a protrusion which protrudes from the base portion towards the door opening portion, and a tubular part having a generally triangular cross-section. One corner of the tubular part is integrally joined to the protrusion such that one wall which faces the one corner is located between the door and the door opening portion.