Abstract: A motor control device includes: a manual steering command value generation unit that generates a manual steering command value; an integrated angle command value calculation unit that calculates an integrated angle command value by adding the manual steering command value to an automatic steering command value provided in a driver assist mode; and a control unit that performs angle control on an electric motor for steering angle control based on the integrated angle command value. The manual steering command value generation unit generates the manual steering command value based on an equation of motion including road reaction force characteristic coefficients. The motor control device further includes a road reaction force characteristic changing unit that changes a value of at least one of the road reaction force characteristic coefficients included in the equation of motion, based on vehicle environment information that is information on an environment in which a vehicle travels.

Abstract: A management system for an experimental animal is provided. This management system includes an information identifying unit configured to identify experimental information on the experimental animal to be transported to an experiment site, and a stress value calculating unit configured to calculate a stress value indicating stress to be suffered by the experimental animal during transportation based on the experimental information. The experimental information includes at least a part of a transportation distance for the transportation of the experimental animal, a transportation period for the transportation of the experimental animal, the number of the experimental animals to be transported at a time, an age of the experimental animal, and information on pretreatment given to the experimental animal prior to the transportation.

Abstract: A vehicle steering system has a power transmission path cut off between a steering unit that is steered by a steering wheel of a vehicle and a turning unit that operates to turn a turning wheel of the vehicle. A steering control device for the vehicle steering system includes a processor that controls operation of the turning unit. The processor executes a target turning angle calculation process of, based on a steering angle representing a rotation position of the steering wheel, calculating a target turning angle that is a target of a turning angle representing a turning position of the turning wheel and is a control amount for operating the turning unit.

Abstract: A grease composition includes a base oil, a thickener, and an extreme pressure additive. The base oil contains trimellitate ester and poly-a-olefin. A proportion of the trimellitate ester to a total amount of the trimellitate ester and the poly-a-olefin is 10.0 mass % or more and 60.0 mass % or less. The thickener contains lithium 12-hydroxystearate and lithium stearate. A proportion of the lithium 12-hydroxystearate to a total amount of the lithium 12-hydroxystearate and the lithium stearate is 5.0 mass % or more and 95.0 mass % or less. The extreme pressure additive contains molybdenum dialkyl dithiocarbamate. A proportion of the molybdenum dialkyl dithiocarbamate to a total amount of the trimellitate ester, the poly-a-olefin, the lithium 12-hydroxystearate, the lithium stearate, and the molybdenum dialkyl dithiocarbamate is 0.6 mass % or more and 16.0 mass % or less.

Abstract: A steering control device includes: a target steering corresponding value calculation unit that calculates a target steering corresponding value so that the ratio of the amount of change in steered angle to the amount of change in amount of operation of an operating member becomes greater than 1; a control signal generation unit that generates a control signal; and a mode switch unit that switches a control mode. The mode switch unit performs: an operation determination process of determining whether an operation condition for detecting a valid operation performed on the operating member by a driver is satisfied during an autonomous driving control mode; and a mode switching process of switching the control mode to a manual driving control mode when the operation condition is satisfied. The operation determination process includes a process of determining an unintended operation by the driver to be invalid.

Abstract: Method for compensating for a friction between at least two parts, the method being based on a friction model (M), a speed (v) between at least one part and at least one other part of the at least two parts, the speed being measured, or estimated from a measurement, the speed (v) being input data of the model (M), the model (M) being based on an internal state (z) of friction, a time derivative (?) of the internal state (z) being a function of said internal state and of the speed (v) and of a first gain (?), the method comprising a step of saturation of the speed v at the input of the friction model, so that an absolute value |v| of the speed (v) remains lower than a saturation value, the saturation value being a function of the speed, of the first gain and of a second gain.

Abstract: A steer-by-wire steering system includes a controller configured to execute a steering control process and a determining process of determining a converted operation amount by converting an actual wheel steering amount to an operation amount of an operation member based on an inverse of a steering gear ratio. In the determining process, when the steering gear ratio abruptly changes, the controller converts a gap of the converted operation amount generated at a time point of occurrence of the abrupt change to a gap of the wheel steering amount to grasp a converted steering amount offset value. While gradually decreasing the converted steering amount offset value, the controller thereafter re-converts the converted steering amount offset value to the gap of the converted operation amount based on the inverse of the steering gear ratio to determine a converted operation amount correction value and corrects the converted operation amount based on the value.

Abstract: A steering control device is configured to execute a torque control process, a feedback amount calculation process, and an automatic control calculation process. The torque control process is a process of controlling torque of the motor according to a value of a required torque variable. The required torque variable is a variable that indicates a target value for the torque of the motor. The feedback amount calculation process is a process of calculating a value of the required torque variable in order to control steering torque to target steering torque through feedback control.

Abstract: A steering device that holds a steering member in such a manner that the steering member is movable between an advanced position where a driver can steer the steering member and a retracted position located closer to the front of a vehicle. The steering device includes: a fixed member attached to a vehicle body; a movable member to which a steering shaft holding the steering member is rotatably attached; and an upper guide mechanism and a lower guide mechanism that linearly guide the movable member with respect to the fixed member. An end on the advancing side of the upper guide mechanism is located further toward the advancing side than an end on the advancing side of the lower guide mechanism in an advancing and retracting direction of the movable member.

Abstract: A steering system has a support tube that supports a steering shaft, and a housing that has a cylindrical portion housing a speed reducer. A bearing support member is fitted to an inner circumferential face of the cylindrical portion. A bearing is disposed between an outer circumferential face of the steering shaft and an inner circumferential face of the bearing support member. The bearing support member has an inner circumferential wall that fits to an outer circumferential face of the bearing, an outer circumferential wall that fits to the inner circumferential face of the cylindrical portion, and a coupling wall that couples the inner circumferential wall and the outer circumferential wall in a radial direction. The inner circumferential wall extends from the coupling wall in a same direction as a mounting direction, and the outer circumferential wall extends in an opposite direction from the mounting direction.

Abstract: A target motor torque command value setting unit includes a basic torque command value setting unit that sets a basic torque command value, a correction unit that corrects a basic target torque set by a basic target torque setting unit using resonance control torque, and a motor torque command value computation unit that computes a motor torque command value based on the basic target torque following correction by the correction unit. The resonance control torque is a sum of a first torque obtained by multiplying a differential value of steering torque by a predetermined first gain, and a second torque obtained by multiplying the steering torque by a predetermined second gain.

Abstract: A ball screw having a threaded stem including a ball groove formed in an outer surface thereof, a ball nut including a central bore formed by an inner surface thereof, the inner surface defining a ball groove, a first recess extending inwardly from an end face of the ball nut and into the ball groove of the inner surface, and a stop pin disposed in the first recess so that a first end of the stop pin extends inwardly into the ball groove of the inner surface of the ball nut, wherein the stop pin is formed by a coiled strip of metal.

Abstract: A hollow profile-manufacturing extrusion die includes a mandrel that molds an inner peripheral surface of a hollow part, and bridges for supporting the mandrel. The mandrel is disposed so as to correspond to a die hole that molds an outer peripheral surface of the hollow profile. The bridges are disposed at positions corresponding to between the hollow part and side surfaces in the hollow profile, and are not present at positions corresponding to between the hollow part and a lower surface.

Abstract: A method for fine-tuning a variable-gear steering column according to a speed of the vehicle, the method includes: a step of characterizing a desired handling of the vehicle for a speed V1 and of characterizing a desired stability for a speed V2; a step of determining a value G1 of the gear ratio allowing obtaining the desired handling at the speed V1, and a value G2 of the gear ratio allowing obtaining the desired stability at the speed V2, a step of calculating a parameter p1 and a parameter p2 according to the speed V1, the speed V2, the value G1 and the value G2 so that the relationship between the gear ratio and the speed of the vehicle is defined by the equation G=p2+p1/V, when the speed is included between a first threshold and a second threshold.

Abstract: A steering control device includes a control unit. The control unit is configured to execute a control angle calculation process, an angle feedback process, and a standard value adjustment process. The control angle calculation process is a process of calculating a control angle as an absolute angle relative to a standard value, and the angle feedback process is a process of performing feedback control on the control angle, and the standard value adjustment process is a process of adjusting the stored standard value. The standard value adjustment process includes a process of, when, in a straight-ahead state, the control angle deviates from a value showing the straight-ahead state, adjusting the standard value such that the deviation of the control angle from the value showing the straight-ahead state decreases.

Abstract: A steering control device includes a base axial force calculator, a limiting axial force calculator, and a final axial force calculator. The limiting axial force calculator includes a steering angle holder, a reference angle calculator, a final difference calculator, and an axial force calculator. The steering angle holder is configured to hold a steering angle at the time of limiting a turning operation of the turning wheels when the turning operation is limited. The reference angle calculator is configured to calculate a reference angle. The final difference calculator is configured to calculate a final difference which is a final difference between the reference angle and the current steering angle. The axial force calculator is configured to calculate a limiting axial force based on a value of the final difference.

Abstract: A power supply device includes a driving control device and an auxiliary control device, the vehicle including a main power source, an auxiliary power source, and a supply path, the supply path being a path configured to be opened and closed according to a state of a start switch of the vehicle. The driving control device is a device that controls a state of equipment installed in the vehicle and the auxiliary control device is a device that controls a state of the auxiliary power source. The driving control device is configured to execute a storage process, a permission signal transmission process, and an initial value process, and the auxiliary control device is configured to execute a permission signal reception process and a stop process.

Abstract: A method for determining a parameter representative of a set torque for a motor including: a regulation step determining a command variable as a function of a DC current threshold and a measured DC current; a determination step determining an upper limit and a lower limit of the parameter representative of the set torque as a function of the command variable; an evaluation step determining the parameter representative of the set torque as a function of the upper limit and the lower limit of the parameter representative of the set torque, and of a parameter representative of the desired torque.

Abstract: The steering control device includes a software processing device. The software processing device is configured to execute assist amount setting processing, axial force setting processing, and reaction force application processing. In the assist amount setting processing, an assist amount is set while an output value of first damping processing that outputs a first damping correction amount having a correlation with a steering angular velocity is used. In the axial force setting processing, the axial force is set while an output value of second damping processing that outputs a second damping correction amount having a positive correlation with the steering angular velocity is used. In the reaction force application processing, a value obtained by subtracting the axial force from the assist amount is an input and a reaction force motor is operated.

Abstract: A control device for a vehicle includes a plurality of control circuits configured to control a control object by starting in response to powering-on of a vehicle and to perform power latch control for continuing to be supplied with electric power in a predetermined period in response to powering-off of the vehicle. Each of the control circuits is configured to perform starting after all of the control circuits have recognized the powering-on of the vehicle in a case where the vehicle is powered on while the power latch control is being performed after the vehicle has been powered off.