Abstract: A motor control device for controlling drive of an electric motor that controls a steering angle of a steering device, the motor device includes: a torque sensor and an electronic control unit. The torque sensor is configured to detect steering torque acting on a steering member. The electronic control unit is configured to: generate a steering angle command value based on the steering torque by using an equation of motion that is a reference model of the steering device; control driving of the electric motor so that an actual steering angle follows the steering angle command value; and limit a virtual reaction force that is a reaction force component of the equation of motion.

Abstract: A travel assistance device configured to execute travel assistance when a plurality of vehicles form a vehicle group and travel in a line. The travel assistance device includes: a first control unit configured to, if there is lane-change instruction for the vehicle group, cause an end-of-line vehicle to change lanes, such vehicle being the vehicle from among the plurality of vehicles forming the vehicle group that is positioned at the end of the line; and a second control unit configured to, following the lane change of the end-of-line vehicle, allow a lane change for at least one vehicle that is other than the end-of-line vehicle and that is one of the vehicles forming the vehicle group.

Abstract: A clutch device includes a clutch housing including a cylindrical portion and a bottom, a multiple disc clutch, a receiving member and a pressing member that moves in an axial direction with respect to the clutch housing to press the multiple disc clutch from the bottom side toward the receiving member. The pressing member includes an annular portion disposed radially inward or outward of the bottom and a plurality of protruding portions protruding in a radial direction from the annular portion, the annular portion being provided integrally with the protruding portions. The bottom of the clutch housing has a plurality of cutouts that accommodate the protruding portions. The protruding portions move in the axial direction within the cutouts to press the multiple disc clutch.

Abstract: A drive force transmission apparatus is mountable on a four-wheel drive vehicle switchable between a four-wheel drive mode that transmits a drive force of an engine to front wheels and rear wheels, and a two-wheel drive mode that transmits the drive force to only the front wheels. The drive force transmission apparatus allows adjustment of the drive force to the rear wheels, and includes a multi-plate clutch, a piston for axially pressing the multi-plate clutch, an actuator for axially moving the piston, and a control unit for controlling the actuator. Upon satisfaction of a predetermined condition that indicates a high probability of the vehicle needing to be switched from the two-wheel drive mode to the four-wheel drive mode, the control unit causes the actuator to displace the piston by a predetermined amount with respect to an initial position of the piston toward the multi-plate clutch.

Abstract: Method for monitoring the operation of a power steering system including a steering wheel, a servo motor and a monitoring module, characterized in that said method involves a step of determining at least one temporary limit value of a parameter, a step of estimating an additional value which an assistance functionality contributes to a setpoint value of the parameter, and a step of correcting the at least one temporary limit value by the additional value.

Abstract: A first microcomputer is configured to identify the cause (a content of the abnormality) of a communication abnormality based on a combination of whether communication through a first communication line is established, whether communication through a second communication line is established, and whether a second clock is normal. Specifically, the first microcomputer separately determines whether the communication abnormality between the first microcomputer and a second microcomputer is simply due to an abnormality in the first communication line and the second communication line, or due to stop of a function of the second microcomputer. The second microcomputer is configured to identify the cause of the communication abnormality based on a combination of whether the communication through the first communication line is established, whether the communication through the second communication line is established, and whether a first clock is normal.

Abstract: A platooning system includes a vehicle control system installed in each of vehicles that include a manually-driven head vehicle. The vehicle control system controls a host vehicle such that the host vehicle follows a lead vehicle through wireless communication between the host vehicle and the lead vehicle. The vehicle control system is installed in the host vehicle and the lead vehicle. The vehicle control system includes a sensor that detects a state of the host vehicle, an actuator that adjusts a behavior of the host vehicle, and a controller that controls the host vehicle. The controller of the head vehicle physically notifies a driver of the host vehicle of a state of a subsequent vehicle by operating the actuator of the host vehicle when a state signal including information that indicates the state of the subsequent vehicle is received through the wireless communication.

Abstract: A gear machining apparatus performs cutting work for a workpiece and generates a gear by performing a feed operation of a gear cutter relative to the workpiece along a direction of an axis of the workpiece while synchronously rotating the gear cutter and the workpiece in a state in which an axis of the gear cutter is inclined with respect to a line parallel to the axis of the workpiece. The gear machining apparatus continuously performs cutting work for a first tooth flank and cutting work for a second tooth flank during a single feed operation, and changes a correction angle between the cutting work for the first tooth flank and the cutting work for the second tooth flank.

Abstract: A cooling system includes an electric pump, a cooling target temperature sensor, a coolant temperature sensor, and an electronic control unit. The electric pump pumps a coolant to a circulation channel connected to an inlet and an outlet of a cooling channel in which heat is exchanged with a cooling target. The cooling target temperature sensor detects a cooling target temperature. The coolant temperature sensor is arranged upstream of the inlet in the circulation channel, and detects a coolant temperature. The electronic control unit controls driving of the electric pump so that a discharge flow rate of the electric pump matches a target flow rate, and sets the target flow rate using an equation based on a reference value obtained by dividing a difference between the cooling target temperature and a target cooling temperature of the cooling target by a difference between the cooling target temperature and the coolant temperature.

Abstract: A differential unit includes: a pinion gear shaft including a shaft portion and a gear portion; a ring gear meshing with the gear portion; a differential case that rotates with the ring gear; a differential gear mechanism accommodated in the differential case; a differential carrier having an accommodating space accommodating the differential case and the ring gear; and a pair of bearings supporting the pinion gear shaft such that the pinion gear shaft is rotatable with respect to the differential carrier. The differential carrier has an inner cylindrical portion, an outer cylindrical portion, and a connecting portion that are provided as a single member. The inner cylindrical portion has the pair of bearings fitted in the inner cylindrical portion. The outer cylindrical portion is provided radially outward of the inner cylindrical portion. The connecting portion connects the inner cylindrical portion and the outer cylindrical portion.

Abstract: A lithium ion secondary battery that can operate in a high-temperature environment of 85° C. The lithium ion secondary battery includes a positive electrode active material that can store and release lithium ions Li|, a positive electrode binder that binds the positive electrode active material, a negative electrode active material that can store and release lithium ions Li+, a negative electrode binder that binds the negative electrode active material, and an electrolytic solution containing an organic solvent and an imide-based lithium salt. The negative electrode active material is previously doped with lithium ions. The positive electrode binder has a Hansen solubility parameter-based relative energy difference (RED) value of more than 1 with respect to the electrolytic solution.

Abstract: A steering control device includes: an absolute steering angle detecting unit configured to detect an absolute steering angle; and a current command value calculating unit configured to calculate a current command value corresponding to a target value of the motor torque output from the motor. The current command value calculating unit is configured to perform partial release control for decreasing a correction value of the current command value due to execution of the end contact relaxation control when a vehicle is tried to be turned at the time of execution of the end contact relaxation control. The current command value calculating unit is configured to stop the partial release control when the current command value which is calculated at the time of execution of the partial release control is a value which is not affected by decreasing the correction value based on execution of the partial release control.

Abstract: A turning apparatus includes tie rods, a wheel turning shaft, two motors, two ball screws, a transmission mechanism, and two controllers. The wheel turning shaft turns steered wheels of a vehicle. A first controller that is any one of the two controllers computes a current command value and allocates the current command value to the motors at a ratio that varies with a position of the wheel turning shaft in an axial direction. The two controllers each supply any one of the motors, which is an object to be controlled by a corresponding one of the controllers, with a current according to a corresponding of individual current command values.

Abstract: A control apparatus for a steering system includes control circuitry configured to perform an angle control process for controlling, to an angle command value, a convertible angle that is convertible into a rotational angle of the electric motor, a predetermined component calculation process for calculating a predetermined component containing at least one of two components that are a viscosity component and a friction component of the steering system, while using a value of a variable regarding a control quantity of the electric motor as an input, and a relationship change process for changing a relationship of an output from a control unit for the steering system to an input to the control unit, based on the predetermined component calculated through the predetermined component calculation process.

Abstract: A control system for a motor includes: a first processing circuit configured to operate a first drive circuit; a second processing circuit configured to operate a second drive circuit; and a command circuit configured to output a signal relating to a command value for a steered angle of a steered wheel to the first processing circuit and the second processing circuit. The command circuit is configured to execute a detection process, a first notification process, and a second notification process. The first processing circuit is configured to execute a first correction process based on a first result signal to control the steered angle to the command value. The second processing circuit is configured to execute a second correction process based on a second result signal to control the steered angle to the command value.

Abstract: The vehicle steering system includes a rack shaft and a conversion mechanism that converts rotation of a rotating shaft of the motor into reciprocating motion of the rack shaft. The conversion mechanism includes a drive pulley that rotates with the rotating shaft, a driven pulley rotatable about an axis of the rack shaft and a toothed belt extending around the drive pulley and the driven pulley, and converts rotation of the rotating shaft into reciprocating motion of the rack shaft when rotation of the drive pulley is transmitted to the driven pulley via the toothed belt. The vehicle steering system further includes a determination circuit that determines tooth skipping that is a change in meshing position between the drive pulley and the toothed belt, and a calculation circuit that calculates an integrated value obtained by integrating a prescribed value indicating that tooth skipping is determined by the determination circuit.

Abstract: A steering system includes a steering operation shaft, a lower shaft, an upper shaft, and an intermediate. The intermediate shaft includes a tubular member including a hollow portion; and a shaft member. An oil groove that retains lubricating oil is provided in a predetermined range in an axial direction of the intermediate shaft on at least one of an outer peripheral surface of the shaft member at a part housed in the hollow portion and an inner peripheral surface of the hollow portion of the tubular member. A sectional area of the oil groove in an upper shaft-side part of the predetermined range is larger than a sectional area of the oil groove in a lower shaft-side part of the predetermined range, the upper shaft-side part being located on a side of the upper shaft, and the lower shaft-side part being located on a side of the lower shaft.

Abstract: A driving force transmission control device includes a driving force transmission device configured to press a friction clutch by an actuator and a controller configured to control the driving force transmission device. The controller calculates a torque command value indicating a driving force to be transmitted from a rotating member on an input side to a rotating member on an output side based on information of a vehicle. The controller sets an electric current command value according to a magnitude and an amount of time change of the torque command value. The electric current command value is a target value of an electric current. The controller performs electric current feedback control such that an electric current corresponding to the calculated electric current command value is supplied to the actuator.

Abstract: A rotation angle detection device includes a correction-object driven gear that is a driven gear meshing with a main driving gear, a first sensor that is configured to generate an electrical signal based on rotation of the correction-object driven gear, and an electronic control unit that computes a driven-side rotation angle based on the electrical signal. The electronic control unit is configured to store a correction angle used to correct the driven-side rotation angle when computing the driven-side rotation angle. The correction angle is a predetermined deviation in a predetermined angle domain obtained as an average value in which deviations of the number equal to the integer and corresponding to a same relative rotation angle is averaged, so as to be deviation in an angle domain of 0 to 360 degrees.

Abstract: There are provided systems for providing a walking environment and supporting walking, and a method for providing a walking environment including: a location information collection step that collects a location information of a walking support equipment; an environmental information collection step that collects an environmental information used upon providing the walking environment while going out; and a process execution step that executes a process of providing the walking environment to an user of the walking support equipment, based on the environmental information collected in the environmental information collection step and the location information collected in the location information collection step.