Abstract: A raceway of a roller bearing includes a first raceway whose raceway surface is under a relatively high compressive residual stress, and a second raceway whose raceway surface is under a compressive residual stress lower than the compressive residual stress applied to the raceway surface of the first raceway. The raceway surface of the second raceway has a Vickers hardness of 700 HV or more but less than 800 HV. The raceway surface of the first raceway includes a portion that is harder than the raceway surface of the second raceway and that is to be in contact with at least one of axial ends of a rolling contact surface of a roller. A rib includes a rib surface having a Vickers hardness of 450 HV or more but less than 550 HV.

Abstract: A constant velocity joint includes: an outer joint member having a raceway groove; an inner joint member having a leg shaft; a roller that is able to roll on the raceway groove; and a needle bearing that supports an inner periphery of the roller such that the inner periphery of the roller is able to rotate with respect to the leg shaft. The leg shaft includes: a roll portion that supports the needle bearing; a contact portion that is able to contact an end face of the needle bearing, the end face facing a first side in the direction of a central axis of the needle bearing; and a recess portion formed between the roll portion and the contact portion, in a position where the recess portion is recessed from a space in which the needle bearing is disposed.

Abstract: A one-way clutch includes multiple sprags located between an outer ring member and an inner ring member, a cage that holds the sprags such that the sprags are circumferentially spaced from each other, and a spring disposed along the cage and in contact with the sprags. The cage includes a tubular body and an annular flange. The body has multiple pockets that hold the sprags. The flange extends from an axial end of the body toward the outer ring member. A clearance is formed between the outer ring member and the flange along their entire circumference.

Abstract: A motor controller includes a motor drive circuit, a noise cancellation circuit, and a control unit. The motor drive circuit supplies electric power to an electric motor. The noise cancellation circuit includes an RLC circuit, a switch element, and a pull-down resistor. One end of the RLC circuit is electrically connected to a positive terminal of a power supply via the switch element, and the other end of the RLC circuit is electrically connected to a frame ground. A connection point between the RLC circuit and the switch element is electrically connected to a negative terminal of the power supply via the pull-down resistor. The control unit turns ON the switch element for a predetermined time at falling timings of phase voltages output from the motor drive circuit.

Abstract: A steering mechanism including a steering rack mounted with the ability to slide in a steering box connected to a steering tie rod which includes a rod connecting a first articulation member to a second articulation member intended to be connected to a steering knuckle, the mechanism also including an elastic sealing sleeve which delimits a fluidtight protective enclosure around the end of the rack, the rod of the steering tie rod being subdivided into an upstream rod portion, bearing the first articulation member, and a downstream rod portion distinct from the upstream rod portion and bearing the second articulation member, the upstream rod portion connected to the downstream rod portion by a joint includes an elastic damping member designed to damp relative movements of the downstream rod portion with respect to the upstream rod portion, and the joint being situated inside the protective enclosure delimited by the fluidtight sleeve.

Abstract: A wheel bearing apparatus includes an outer ring, an inner shaft member, rolling elements, a cage, and a sealing device. The sealing device includes an annular slinger and a sealing member. The slinger has a first inclined surface provided on a radially outer side and on a side facing the sealing member such that a diameter of the first inclined surface increases toward a first side in an axial direction. The sealing member has a second inclined surface provided on the radially outer side and on a side facing the slinger such that a diameter of the second inclined surface increases toward a second side in the axial direction. The second inclined surface intersects with a virtual extension surface extending radially outwardly along the first inclined surface, and the second inclined surface is continuous with an inner peripheral surface of the radially outer portion.

Abstract: Provided is a steering controller configured to suppress deterioration of the operability of a steering wheel for steering steered wheels even when a driving voltage for a steering system has been decreased. When a clutch is in a disengaged state and steered wheels are steered by a steered-operation actuator while a reaction force is applied to steering wheel by a reaction-force actuator, if a driving voltage for the steered-operation actuator is decreased, a CPU opens relays and stops generation of torque by the steered-operation actuator. Meanwhile, a CPU engages the clutch and steers the steered wheels through cooperation between a steering torque input into the steering wheel and an assist torque generated by a reaction-force motor.

Abstract: A frequency detector includes an oscillation related information output portion to which moving body position related information and a correction parameter are input, and which outputs a frequency adjustment parameter and estimated moving body position related information; a frequency estimating portion to which the frequency adjustment parameter is input, and which outputs an estimated frequency; and an adjusting portion to which the moving body position related information, the estimated moving body position related information, and the estimated frequency are input, and which outputs the correction parameter.

Abstract: A pump included in an oil supply unit includes a piezoelectric body that is repeatedly deformed when a pulsed drive voltage is applied from a drive unit. The pump discharges lubricant as the volume of a storage unit that stores fluid to be supplied decreases with deformation of the piezoelectric body. An abnormal discharge detection device that detects an abnormal fluid discharge operation of the pump includes: a measurement unit that measures a terminal voltage of the piezoelectric body; and a control unit functioning as a determination unit that determines if the discharge operation is being performed normally or not based on whether or not the measured terminal voltage has changed with time during application of a pulse of the drive voltage.

Abstract: A rolling-sliding member that is high in hardness and continues to have a passivation film reliably even after being subjected to a process that does not require any processing for removal of scale etc., as well as a rolling bearing using the same and a method for manufacturing the rolling-sliding member.

Abstract: A vehicle steering device includes a steering wheel, an input shaft, an output shaft coupled to the input shaft via a torsion bar, an electric motor, a torque detector that detects a torsion bar torque applied to the torsion bar, a rotational angle detector that detects a rotational angle of the electric motor, and a microcomputer. The microcomputer is configured to estimate a driver torque applied to the steering wheel using at least (i) the torsion bar torque detected by the torque detector, (ii) the rotational angle of the electric motor detected by the rotational angle detector, and (iii) a physical model that is constructed with a torsion bar viscosity and a torsion bar rigidity, and determine whether the steering wheel is operated in a hands-on state or a hands-off state based on the estimated driver torque.

Abstract: A power steering system includes: a main power source; an auxiliary power source connected to the main power source via a power source switch; a charge circuit connected to the main power source via the power source switch and configured to charge the auxiliary power source on the basis of the main power source; a switching circuit that switches a power supply mode; and a unit that turns off the power source switch after the auxiliary power source is charged by the charge circuit until the voltage of the auxiliary power source becomes equal to or more than a predetermined voltage in the case where the voltage of the auxiliary power source is less than the predetermined voltage when a key switch for a vehicle is turned off.

Abstract: A cage for a radial roller bearing includes an inner cage member made of a continuous annular steel material and having a plurality of through holes, in which a plurality of rollers is housed in a corresponding one of the through holes, and an outer cage member made from resin and having a plurality of retaining holes, in which the plurality of rollers is retained such that the rollers are rollable, provided in correspondence with the through holes. The outer cage member is fixed to an outer side of the inner cage member by an axial projection-recess fitting structure.

Abstract: A sealing rubber composition includes acrylic rubber, artificial graphite, and coupling agent.

Abstract: A thermoacoustic device includes a loop pipe, a first stack that is disposed in the loop pipe and that generates a sound wave in the loop pipe by way of a temperature gradient, a second stack that is disposed in the loop pipe and that generates a temperature gradient, a first high temperature side heat exchanger that is disposed at one end of the first stack and that makes the temperature of the one end of the first stack be higher than the other end, and a first low temperature side heat exchanger that is disposed at the other end of the first stack and that makes the temperature of the other end of the first stack be lower than the one end.

Abstract: A production apparatus for producing an electricity storage material is provided. The electricity storage material includes at least a thickener and an active material. The production apparatus includes a solution production device and a mixture-kneading device. The solution production device produces a surfactant-containing solution of the thickener. The mixture-kneading device kneads the solution together with a powder of the active material.

Abstract: A steering control device which can suppress a degradation in the steering feel caused when a steering wheel is moved back from a steering limit is provided. A steering control device controls a steer-by-wire steering system that includes a steering-side motor that generates a steering reaction force to be applied to a steering wheel to control operation of the steering-side motor. The steering control device includes an angular speed control circuit that performs feedback control on the steering-side motor in the case where a steering angle of the steering wheel reaches a virtual rack end and the steering wheel is steered back toward the steering neutral. The feedback control is performed such that a steering speed computed on the basis of the steering angle coincides with a target steering speed that is the target value for the steering speed and that is set in accordance with the steering angle.

Abstract: Provided is a steering control device that controls a steer-by-wire steering system for a vehicle and that is capable of reducing erroneous detection of a grip state and improving the robustness in controlling a steering reaction force. The control device includes a road surface axial force calculation circuit that calculates a road surface axial force, based on road surface information. The control device includes a second estimated axial force calculation circuit that calculates a lateral force applied to a rack shaft, based on a yaw rate and a lateral acceleration. The control device includes a grip factor calculation circuit that calculates a grip factor, based on the road surface axial force and the lateral force. The control device varies the steering reaction force in accordance with the grip factor.

Abstract: A control device controls a reaction force motor that generates a steering reaction force to be applied to a steering mechanism of a vehicle, based on a steering reaction force command value calculated according to a steering state. An axial force distribution calculation circuit of the control device calculates a mixed axial force by summing values obtained by multiplying an ideal axial force and estimated axial forces by individually set distribution rates. The axial force distribution calculation circuit calculates a final axial force to be reflected in the steering reaction force command value, by summing values obtained by multiplying the ideal axial force and the mixed axial force by individually set distribution rates. The axial force distribution calculation circuit sets the distribution rates of the ideal axial force and the mixed axial force, based on a distribution command generated by the host control device when intervening in steering control.

Abstract: A steering control device with reduced power consumption is provided. In the case where an IG signal is turned on, a CPU disengages a clutch, and operates torque of a steered-side motor in order to control the steered angle of steered wheels to a target steered angle that matches an operation on the steering wheel through feedback control. The CPU decreases a current that flows through the steered-side motor with respect to a request by feedback control in the case where the logical product of a statement that a vehicle speed is equal to or less than a prescribed speed, a statement that the absolute value of steering torque which is input torque input to the steering wheel is equal to or less than a prescribed value, and a statement that the absolute value of a steering speed is equal to or less than a predetermined speed.