Abstract: A waterproof structure of an electronic unit includes a case that defines a housing portion housing a first terminal, and a connector that includes an insulating body attached to the case. The connector includes a second terminal that is supported by the insulating body and connects a conductor end portion of a cable to the first terminal. The insulating body includes a wall portion that partitions a part of the housing portion by covering an open portion of the case. The insulating body includes a cable lead-in portion that defines a cable lead-in hole for leading the cable into the case and is joined to the wall portion. A potting resin is filled in a space between the inner periphery of the cable lead-in hole and the outer periphery of the cable and the housing portion and cured.

Abstract: A reference setting tool for measuring a shape of a side face spline is used to measure the shape of driven teeth that are formed on an axial end face of a vehicle hub unit and that are meshed with drive teeth of a constant velocity joint. The reference setting tool includes: reference teeth that are formed so as to be aligned along a circular ring and so as to have the same shape as the drive teeth of the constant velocity joint; and a reference surface that has a predetermined correlation with the reference teeth, and that is used to set a reference position for measuring the shape of the driven teeth with the reference teeth in mesh with the driven teeth.

Abstract: A vehicle steering system includes: a steering mechanism that includes a steering member, a steering angle detecting unit and a direction detecting unit that detects a steering direction with reference to a neutral position of the steering member; a steered mechanism that includes a steered wheel and a turning actuator having a turning motor, and that is not mechanically coupled to the steering mechanism; and a control device that controls the turning motor and that, at the time of a failure of the steering angle detecting unit, controls the turning motor by determining a turning motor command value for controlling the turning motor on the basis of a detected signal from the direction detecting unit.

Abstract: An EPS includes a first rack and pinion mechanism that converts rotation of a pinion shaft due to a steering operation, to reciprocating motion of a rack shaft; and a steering force assist device that applies a motor torque of a motor as an assist force by using a second rack and pinion mechanism; and an ECU that controls an operation of the steering force assist device. Rack teeth of the rack shaft constituting the first rack and pinion mechanism are formed so that a steering gear ratio is changed depending on a steering angle. The ECU computes a motor neutral point by subtracting a conversion value from a motor angle detection value. The conversion value is computed based on a steering angle detection value by referring to a conversion map that is set taking into account the steering gear ratio corresponding to the steering angle.

Abstract: A rotary electric machine includes: a stator; a rotor; a control device that causes the stator to generate a rotating magnetic field; and a magnetic flux supply element supported by a rotary shaft so as to be rotatable relative to the rotary shaft, disposed radially inward of the rotor across a gap, and having auxiliary magnets. Each auxiliary magnet is formed such that opposite end portions thereof in the circumferential direction are radially opposed to holding magnets when the relative rotation angle of the magnetic flux supply element is a strengthening angle. The control device executes field weakening control or field strengthening control, thereby changing the relative rotation angle of the magnetic flux supply element.

Abstract: A rolling bearing device includes a rolling bearing, and a lubricant reservoir that is formed in an outer ring spacer. A lubricant containing base oil, a gelling agent and water is disposed so as to be contained in the lubricant reservoir. The lubricant has a uniform base oil concentration. The base oil concentration is 40% by weight to 50% by weight.

Abstract: There are provided an optical non-destructive inspection apparatus that can inspect a measurement object such as a wire bonding portion. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, a first infrared detector, a second infrared detector, an emitted-infrared selective guide unit, and a control unit. The control unit controls the heating laser beam source, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a ratio between a detected value from the first infrared detector and a detected value from the second infrared detector, determines a state of a measurement object based on the temperature rise characteristic, and changes at least one of wavelengths of infrared light beams guided to the first infrared detector and the second infrared detector based on a measured temperature during measurement.

Abstract: [Problems] To provide power transmission chain manufacturing method and apparatus which can prevent a pin against damage when, by increasing a pre-tension, a more proper residual compression stress is applied to a link. [Means for Solving Problems] The manufacturing apparatus comprises a pre-tension applying apparatus 31 which includes a first pre-tension applying pulley 32 and a second pre-tension applying pulley 33 around which an endless shaped chain 1 can be wound. The mutually opposed sheave surfaces 32a and 33a of the pre-tension applying pulleys 32 and 33 are respectively formed to have a concave shape which corresponds to the convex curved portion 14a of the end face of a pin 14.

Abstract: A return passage that connects two points of a rolling passage to allow each ball that rolls in the rolling passage to endlessly circulate is formed in a ball screw nut by attaching a circulation member to fitting holes. A protrusion is formed on an outer surface of the circulation member at a position offset from a raceway of the balls that circulate in the return passage. The circulation member is fixed to the ball screw nut when the protrusion contacts an inner periphery of an inner ring of a second bearing.

Abstract: A motor control unit controls a motor including a rotor and a stator facing the rotor. A current drive unit drives the motor at an axis current value of a rotating coordinate system that rotates in accordance with a control angle that is a rotational angle used in a control. An addition angle calculation unit calculates an addition angle to be added to the control angle. A control angle calculation unit obtains, at every predetermined calculation cycle, a present value of the control angle by adding the addition angle that is calculated by the addition angle calculation unit to an immediately preceding value of the control angle. An angular speed calculation unit calculates an angular speed of the rotor. An addition angle correction unit corrects the addition angle based on the angular speed calculated by the angular speed calculation unit. A filtering unit filters the angular speed calculated by the angular speed calculation unit.

Abstract: An electric power steering system includes a motor control device that controls driving of a motor based on an assist command value, the motor applying assist torque to a steering mechanism. The motor control device computes a first assist component based on steering torque and a vehicle speed. The motor control device computes a second assist component based on the steering torque and the first assist component. The motor control device computes the assist command value by adding the second assist component to the first assist component. The motor control device includes a road information compensation portion that adjusts the second assist component contained in the assist command value. A basic assist component computation portion computes the first assist component in accordance with a degree of adjustment of the second assist component.

Abstract: A motor controller controls a motor including a rotor and a stator opposed to the rotor. The motor controller includes an electric current driving unit which drives the motor with an axis electric current value defined in a rotating coordinate system defined with respect to a control angle that is a rotation angle for control, a control angle computing unit which computes a current value of the control angle by adding an addition angle to a previous value of the control angle in each predetermined computing cycle, and an addition angle computing unit which computes the addition angle according to a torque to be generated by the motor or a response of the motor to the axis electric current value.

Abstract: It is an object of the present invention to provide a controller for a steering apparatus having easy operation of an adjustment of a tilting angle. The steering apparatus comprises a tilting mechanism adjusting a tilting angle of a steering wheel, and an electrical motor driving the tilting mechanism. The controller for the steering apparatus 1 detects the tilting angle based on a rotational angle of the screw shaft. The controller defines the predetermined supplying current according to the detected amount of the tilting angle as the supplying current to the electrical motor.

Abstract: A bearing includes an inner ring, an outer ring, and a plurality of rolling elements. In the bearing, each of an inner ring raceway surface and an outer ring raceway surface has a contact area that comes into contact with the rolling elements, and a non-contact area that is formed adjacent to an outer side of an end portion of the contact area and does not come into contact with the rolling elements. A lubricant retaining portion having a recessed portion and a large number of non-uniform projections and depressions is formed at the non-contact area of at least one of the inner ring raceway surface and the outer ring raceway surface.

Abstract: In a material handling vehicle such as an electric forklift, a depression amount of an accelerator pedal that provides an instruction on a control amount of a drive motor for driving a drive wheel is detected. When the depression amount of the accelerator pedal is equal to or larger than a predetermined value and a forward-backward switching signal that indicates that a shift lever is operated is received, a drive current for a steered system motor is set to a value smaller than a normal drive current within a predetermined time period that starts upon reception of the forward-backward switching signal.

Abstract: A prong type resin cage includes: an annular portion; and multiple cage bars. Each cage bar has a roller guide face formed in each opposed face thereof, the opposed face being opposed to an outer peripheral face of a corresponding one of rollers. The roller guide face is used for roller guide by the outer peripheral face at a rotational speed equal to or lower than a prescribed rotational speed. A cage outer face including an outer peripheral face of the annular portion and radially outer faces of the cage bars has outer ring guide faces of which diameter is increased radially outward by a centrifugal force to decrease a radial clearance between the outer ring guide faces and an inner peripheral face of the outer ring, so that outer ring guide by the inner peripheral face is carried out, at a rotational speed higher than the prescribed rotational speed.

Abstract: A motor control device includes a drive circuit that supplies drive electric power in three phases to a motor, according to turning on or off of FETs; a microcomputer that generates control signals for turning on or off the FETs. The microcomputer detects a current-carrying failure in a U phase when all of (i) a condition that an absolute value of a U phase current value is less than a current determination value, (ii) a condition that a duty value corresponding to the U phase voltage command value is equal to or greater than a first duty determination value, or equal to or less than a second duty determination value; and (iii) a condition that the U phase voltage command value is deviated from the V phase and W phase voltage command values are satisfied.

Abstract: In a vehicle steering system configured to reduce the burden placed on an operator when steered wheels are returned to a neutral position, a knob for operating a steering wheel is turnably attached to the steering wheel. A switch is attached to the knob. A steered system ECU includes a target steered angle setting unit. The target steered angle setting unit changes a target steered angle to a steered angle corresponding to a position closer to the neutral position of the steered wheels when the switch is turned on in a state where the turning amount of the steering wheel from a turning angle of the steering wheel corresponding to the neutral position of the steered wheels is within a prescribed range.

Abstract: A prong type cage is incorporated in a double row roller bearing and holds the rollers arranged in one of the two rows. The prong type cage has an annular portion; and multiple cage bars. Pockets in which the rollers are held are defined at positions on a side of the one side face of the annular portion and between the cage bars adjacent to each other in the circumferential direction. Recesses are formed in a face of the annular portion, the face being opposed to end faces of the rollers disposed in the pockets. The recesses are opened toward the end faces of the rollers to retain grease between the recesses and the end faces of the rollers. The recesses are opened at an inner peripheral face of the annular portion to introduce the grease that is present on the inner peripheral face of the annular portion into the recesses.

Abstract: An electric motor controller for controlling an electric motor that includes a rotor and a stator that faces the rotor. The electric motor controller includes a current drive unit; an addition angle calculation unit; a control angle calculation unit; a torque detection unit; a changing unit and a suspending unit.