Abstract: An electric vehicle control method for controlling a motor based on a torque command value in an electric vehicle includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; and a vehicle state control including a stop process of calculating a stopping basis torque target value so as to converge the torque command value to the disturbance torque estimation value in accordance with a decrease in the speed parameter, and a vibration damping process of calculating a stopping correction torque target value by performing filtering on the stopping basis torque target value.

Abstract: A control method for an electric vehicle in which a motor is used as a traveling drive source and deceleration is performed by a regenerative braking force of the motor, the electric vehicle including a towing unit configured to tow a separate object, the method including: acquiring an accelerator operation amount; acquiring a total mass of the electric vehicle; estimating a disturbance torque acting on the electric vehicle; acquiring an angular velocity of a rotary body; estimating a vehicle body speed of the electric vehicle; calculating a torque command value for the motor; measuring a load applied to the towing unit; correcting the total mass of the electric vehicle based on the measured load applied to the towing unit and the torque command value; controlling a torque generated in the motor based on the torque command value; and converging the torque command value to the disturbance torque.

Abstract: An electric vehicle control method for controlling a motor based on a torque command value in an electric vehicle includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; and a vehicle state control including a stop process of calculating a stopping basis torque target value so as to converge the torque command value to the disturbance torque estimation value in accordance with a decrease in the speed parameter, and a vibration damping process of calculating a stopping correction torque target value by performing filtering on the stopping basis torque target value.

Abstract: Provided is an electric vehicle control method. The electric vehicle control method includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; a stop process of calculating a stopping basis torque target value so as to converge a torque command value to the disturbance torque estimation value in accordance with a decrease of a speed parameter; and a vibration damping process of calculating a stopping correction torque target value by performing filterring on the stopping basis torque target value.

Abstract: Provided is an electric vehicle control method. The electric vehicle control method includes: a disturbance torque estimation process of calculating a disturbance torque estimation value including an influence of a road surface gradient; a speed parameter acquisition process of acquiring a speed parameter relating to a vehicle speed; a stop process of calculating a stopping basis torque target value so as to converge a torque command value to the disturbance torque estimation value in accordance with a decrease of a speed parameter; and a vibration damping process of calculating a stopping correction torque target value by performing filterring on the stopping basis torque target value.

Abstract: A continuous casting facility used for thin slab casting has a mold for casting molten steel, an immersion nozzle that supplies the molten steel into the mold, and an electromagnetic stirring device capable of providing a swirl flow at a molten steel surface in the mold, and a thickness DCu (mm) of a copper plate of a long side wall, a thickness T (mm) of a steel piece, a frequency f (Hz) of the electromagnetic stirring device, electric conductivity ? (S/m) of the molten steel, and electric conductivity ?Cu (S/m) of the copper plate of the long side wall are adjusted to satisfy the following formulae (1)-a and (1)-b: DCu<?(2/?Cu??)??(1)-a ?(1/2???)<T??(1)-b, where ?=2?f: angular velocity (rad/sec), and ?=4?×10?7: magnetic permeability in vacuum (N/A2).

Abstract: A control method for an electric vehicle according to the present embodiment is a control method for an electric vehicle in which an electric motor 4 is used as a traveling drive source and deceleration is performed by a regenerative braking force of the electric motor 4.

Abstract: The device for controlling a flow in a mold in thin-slab casting of steel has a thickness on the short side of the meniscus portion of 150 mm or less and a casting width of 2 m or less and includes a DC magnetic field generation unit and an immersion nozzle having a slit formed at the bottom so that the slit leads to the bottom of the discharge hole and opens outside, the discharge hole and the slit are present in the DC magnetic field zone, and the magnetic flux density B (T) in the DC magnetic field zone and the distance L (m) from the lower end of the immersion nozzle to the lower end of the core satisfy Formulae (1) and (2) described below: 0.35T?B?1.0T??Formula (1) L?0.

Abstract: A continuous casting facility used for thin slab casting has a mold for casting molten steel, an immersion nozzle that supplies the molten steel into the mold, and an electromagnetic stirring device capable of providing a swirl flow at a molten steel surface in the mold, and a thickness DCu (mm) of a copper plate of a long side wall, a thickness T (mm) of a steel piece, a frequency f (Hz) of the electromagnetic stirring device, electric conductivity ? (S/m) of the molten steel, and electric conductivity ?Cu (S/m) of the copper plate of the long side wall are adjusted to satisfy the following formulae (1)-a and (1)-b: DCu<?(2/?Cu??)??(1)-a ?(1/2???)<T??(1)-b, where ?=2?f: angular velocity (rad/sec), and ?=4?×10?7: magnetic permeability in vacuum (N/A2).

Abstract: The device for controlling a flow in a mold in thin-slab casting of steel has a thickness on the short side of the meniscus portion of 150 mm or less and a casting width of 2 m or less and includes a DC magnetic field generation unit and an immersion nozzle having a slit formed at the bottom so that the slit leads to the bottom of the discharge hole and opens outside, the discharge hole and the slit are present in the DC magnetic field zone, and the magnetic flux density B (T) in the DC magnetic field zone and the distance L (m) from the lower end of the immersion nozzle to the lower end of the core satisfy Formulae (1) and (2) described below: 0.35T?B?1.0T??Formula (1) L?0.

Abstract: A connector (1) forms an internal space (13) for accommodating a circuit board (12) and a case (11). The connector (1) includes first terminals (2), a first core (5), second terminals, a second core, a housing (8) and a ventilation path (14). The first core (5) holds the first terminals (2) while exposing both ends. The second core faces and overlaps the first core (5). The second core holds the second terminals while exposing both ends. The housing (8) covers at least parts of the first and second cores. The ventilation path (14) allows the internal space (13) to communicate with outside air. At least a part of the ventilation path (14) is constituted by a groove portion (512) in at least one of overlapping surfaces of the first and second cores (5) overlapping each other. The groove portion (512) has a bent shape in the overlapping surface.

Abstract: A continuous casting apparatus for a multilayered slab includes a ladle having a molten steel supply nozzle; a tundish having a first retention portion that receives supply of the molten steel from the ladle through the molten steel supply nozzle and has a first immersion nozzle and a second retention portion that is adjacent to the first retention portion with a flow path interposed therebetween and has a second immersion nozzle; an addition mechanism that adds a predetermined element to the molten steel in the second retention portion; and a casting mold that receives supply of the molten steel from the tundish.

Abstract: A connector (1) is mounted on a case (12) including an internal space (120) accommodating an electronic board (11). The connector (1) includes first terminals (3), a first core (4), second terminals (5), a second core (6), a housing (7) and a ventilation passage (8). The ventilation passage (8) allows the internal space (120) of the case (12) to communicate with outside air. At least a part of the ventilation passage (8) is constituted by a groove (40) formed in at least one of mutually overlapping surfaces (411, 611) of the first core (4) and the second core (6). An outer vent (81) of the ventilation passage (8) is formed at a position closer to the case (12) than the receptacle (71) in a Z direction.

Abstract: It is aimed to provide a circuit board connector and a circuit board connector manufacturing method capable of enabling molding by a small-size molding apparatus by performing insert molding in three stages. A circuit board connector (1) includes a case resin portion 2, a connector resin portion 3 having a base (31) and a tower (32) and connector terminals (6A, 6B and 6C). The connector resin portion (3) includes core resin portions (4A, 4B and 4C) for covering intermediate parts (63) of the connector terminals (6A, 6B and 6C) and an outer resin portion (5) for covering the core resin portions (4A, 4B and 4C). A resin material constituting the case resin portion (2) is joined to a resin material constituting the outer resin portion (5) by resin molding.

Abstract: It is aimed to provide a circuit board connector and a circuit board connector manufacturing method capable of enabling molding by a small-size molding apparatus by performing insert molding in three stages. A circuit board connector (1) includes a case resin portion 2, a connector resin portion 3 having a base (31) and a tower (32) and connector terminals (6A, 6B and 6C). The connector resin portion (3) includes core resin portions (4A, 4B and 4C) for covering intermediate parts (63) of the connector terminals (6A, 6B and 6C) and an outer resin portion (5) for covering the core resin portions (4A, 4B and 4C). A resin material constituting the case resin portion (2) is joined to a resin material constituting the outer resin portion (5) by resin molding.

Abstract: A connector (1) forms an internal space (13) for accommodating a circuit board (12) and a case (11). The connector (1) includes first terminals (2), a first core (5), second terminals, a second core, a housing (8) and a ventilation path (14). The first core (5) holds the first terminals (2) while exposing both ends. The second core faces and overlaps the first core (5). The second core holds the second terminals while exposing both ends. The housing (8) covers at least parts of the first and second cores. The ventilation path (14) allows the internal space (13) to communicate with outside air. At least a part of the ventilation path (14) is constituted by a groove portion (512) in at least one of overlapping surfaces of the first and second cores (5) overlapping each other. The groove portion (512) has a bent shape in the overlapping surface.

Abstract: A connector (1) is mounted on a case (12) including an internal space (120) accommodating an electronic board (11). The connector (1) includes first terminals (3), a first core (4), second terminals (5), a second core (6), a housing (7) and a ventilation passage (8). The ventilation passage (8) allows the internal space (120) of the case (12) to communicate with outside air. At least a part of the ventilation passage (8) is constituted by a groove (40) formed in at least one of mutually overlapping surfaces (411, 611) of the first core (4) and the second core (6). An outer vent (81) of the ventilation passage (8) is formed at a position closer to the case (12) than the receptacle (71) in a Z direction.

Abstract: A continuous casting apparatus for a multilayered slab includes a ladle having a molten steel supply nozzle; a tundish having a first retention portion that receives supply of the molten steel from the ladle through the molten steel supply nozzle and has a first immersion nozzle and a second retention portion that is adjacent to the first retention portion with a flow path interposed therebetween and has a second immersion nozzle; an addition mechanism that adds a predetermined element to the molten steel in the second retention portion; and a casting mold that receives supply of the molten steel from the tundish.