Abstract: Each control circuit of a control device for a vehicle drives a motor in one of driving modes that are switched according to an operation state of the control circuit of a system other than an own system. The driving modes include an own-system shutdown mode in which the power supply to a winding set of the own system is stopped when the operation state of the control circuit of a system other than the own system is abnormal. Even when the operation state of the control circuit of a system other than the own system is abnormal, each control circuit does not shift the driving mode to the own-system shutdown mode when an own operation state is a specific operation state in which safety problems are deemed unlikely.

Abstract: A steering control device includes a processor that controls, as a target, a steering system including a reaction force motor that applies a steering reaction force to a steering shaft and a turning motor that turns a turning wheel in a state where power transmission from the steering shaft is cut off. The processor executes a reaction force setting process, a reaction force application process, and an interlocking process. The reaction force setting process is a process of setting the steering reaction force, and the reaction force application process is a process of operating the reaction force motor. A reaction force adjustment process is a process of adjusting the steering reaction force, and a phase compensation process is a process of performing phase compensation of the steering reaction force separately from the reaction force adjustment process.

Abstract: A processor is configured to execute reaction force setting processing, reaction force application processing, axial force gradient calculation processing, and interlock processing. The reaction force setting processing is processing of setting steering reaction force using phase compensation processing. The reaction force application processing is processing of operating a reaction force motor with reaction force set by the reaction force setting processing as input. The axial force gradient calculation processing is processing for calculating an axial force gradient as a variable indicating the ratio of the change in resisting force against rotation of the steering shaft to the change in rotation angle of the steering shaft. The interlocking processing is processing of changing one of both the value of a phase compensation regulation variable as a variable for regulating a manner of the phase compensation and the axial force gradient according to the other.

Abstract: A gear includes a resin sleeve having a disc shape, and a resin toothing that covers an outer peripheral portion of the sleeve and includes a plurality of gear teeth arranged at equal intervals in a circumferential direction. The sleeve includes a plurality of protrusions arranged on an outer peripheral surface at equal intervals in the circumferential direction, and a plurality of ribs arranged at equal intervals in the circumferential direction at positions on a radially inner side of the protrusions. A first installation location count L of the protrusions in the circumferential direction and a second installation location count M of the ribs in the circumferential direction are equal to each other and are integral multiples of a third installation location count N of the gear teeth in the circumferential direction.

Abstract: A steering control device includes a control circuit that controls driving of a reaction force motor that generates steering reaction force that is given to a steering wheel, dynamic power transmission being not performed between the steering wheel and a turning wheel of a vehicle. The control circuit requests a vehicle control device to stop operation of a powertrain in a case where a vehicle electric power source has been turned on and where exchange of information has been performed with the vehicle control device so as not to follow a preset pattern. The vehicle control device controls traveling of the vehicle. The powertrain includes a traveling drive source of the vehicle.

Abstract: A vehicle control device includes a command unit that generates a command value for an actuator and causes a vehicle to travel by outputting the command value to a control unit, a state quantity acquiring unit that acquires at least two values of a vehicle state quantity among a vehicle state quantity ideal value, a vehicle state quantity detection value, and a vehicle state quantity operation value, an event storage unit that stores multiple events that can occur when the vehicle on-board device is not functioning normally, an event acquiring unit that compares at least two values of the vehicle state quantity and acquires an event corresponding to a result of the comparison, and an anomaly determining unit that determines whether there is an anomaly in the vehicle on-board device by using a Bayesian network that includes, as a node, an occurrence probability of the event.

Abstract: This steering control device is provided with a microcomputer. The microcomputer includes: a basic assist component calculation unit for calculating a basic assist component; an angle command value calculation unit for calculating an angle command value; an angle feedback control unit that calculates an assist command value via angle feedback control in which a pinion angle is made to follow the angle command value; and a control signal generation unit that generates a motor control signal on the basis of the assist command value. The basic assist component calculation unit includes: a torque command value calculation unit for calculating a torque command value that is a target value for steering torque to be input by a driver; and a torque feedback control unit that calculates the basic assist component via torque feedback control in which the steering torque is made to follow the torque command value.

Abstract: A steering device includes a turning shaft, a turning motor, and a control device that controls the turning motor such that an angle capable of being converted into a turning angle of a turning wheel follows a target angle that is calculated depending on a steering state of a steering wheel. The control device executes a correction process of correcting the target angle. The control device corrects the target angle such that the degree of an increase in the target angle is slower as the target angle approaches a limit value of an angle region, when the target angle increases toward the limit value of the angle region in either of a vehicle stop state or an extremely low speed state.

Abstract: A motor control device controls a motor of a mechanical device. The motor control device includes a command value calculation unit that calculates a command value for controlling the motor, and a disturbance observer unit for estimating a disturbance applied to the mechanical device, based on the command value and rotation information of the motor, and to correct the command value based on the disturbance that is estimated. The disturbance observer unit has parameters that are adjusted to compensate for effects of the disturbance having a specific frequency that is an object of suppression. The parameters are adjusted such that a disturbance, applied to the mechanical device after effects of the disturbance are compensated for, has frequency characteristics corresponding to antiresonance characteristics of the mechanical device.

Abstract: A turning system applied to a vehicle steering system, includes a turning unit, one or more processors, and a memory. The vehicle steering system has a structure in which a power transmission path between the turning unit and the steering unit steered by a driver is cut off. The one or more processors are configured to execute a mode setting process of setting a control mode in which the turning unit is operated to a setting mode or a normal control mode. The setting mode is a mode that is settable in an in-factory step before the turning unit is shipped to market. The normal control mode is a mode that is settable after the in-factory step is gone through. The mode setting process includes exclusively setting the setting mode or the normal control mode.

Abstract: There is provided a grease composition for improving the chemical stability of the grease composition and increasing the fatigue life of a member in which the grease composition is used. The problems can be solved by a grease composition including a poly-?-olefin; a urea-based thickener; molybdenum dithiophosphate; and barium sulfonate, wherein a difference between an SP value of the urea-based thickener and an SP value of the poly-?-olefin is 3.5 or less.

Abstract: There is provided a rotary table device including: a rotary table; a center shaft erected toward the rotary table; a housing including an inner peripheral surface having a circular cross section over a predetermined range along a rotation axis; a center sleeve including an outer peripheral surface having a circular cross section corresponding to the inner peripheral surface, and the outer peripheral surface being concentric with the inner peripheral surface; a plurality of recesses formed in at least one of the inner circumferential surface and the outer circumferential surface; a plurality of O-rings disposed to be sandwiched between the inner peripheral surface and the outer peripheral surface; an in-housing fluid flow path formed inside the housing; and a plurality of in-sleeve fluid flow paths formed inside the center sleeve.

Abstract: A motor control device includes: an assist torque instruction value generation unit that generates an assist torque instruction value using steering torque; a manual steering instruction value generation unit that generates a manual steering instruction value using the steering torque and the assist torque instruction value; an integrated angle instruction value computation unit that computes an integrated angle instruction value by adding the manual steering instruction value to an automatic steering instruction value for driving assist; and a switching unit that switches between a first control mode, in which the electric motor is controlled based on the assist torque instruction value or the manual steering instruction value, and a second control mode, in which the electric motor is controlled based on the integrated angle instruction value, according to the steering torque when in a driving assist mode.

Abstract: A steering control method includes detecting a current state of a vehicle, setting a target state of the vehicle, setting a basic steering command value based on a difference between the current state and the target state, calculating a first steering command value and a second steering command value by distributing the basic steering command value between the first steering command value and the second steering command value in a prescribed ratio, driving a first steering motor of a steering mechanism based on the first steering command value, and driving a second steering motor of the steering mechanism based on the second steering command value.

Abstract: A steering computer for a vehicle includes: at least one printed circuit positioned inside a computer casing, the computer casing including on an external surface at least one joining contact, at least one connection box provided with at least one connector, the at least one connector being connected to at least one joining contact, characterized in that the at least one connection box is fixed to the computer casing by means of at least one fixing element, said at least one fixing element being at least partially embedded in a resin.

Abstract: A method for estimating the absolute angular position of a steering wheel equipping a power-steering device, referred to as “relative steering wheel position”, of the shaft of a power-steering motor is assessed, a first estimation (Angle1) of the absolute angular position of the steering wheel is assessed from at least one first model using the speed difference between the left and right rear wheels, a first dynamic offset equal to the difference between the first estimation (Angle1) of the absolute angular position of the steering wheel and the relative steering wheel position is estimated, and the absolute angular position of the steering wheel is calculated by adding to the relative steering wheel position a total compensation offset determined from the first dynamic offset, also when restarting the vehicle, a switching-off offset corresponds to the value of the total compensation offset at the time when the vehicle was previously switched off.

Abstract: Information is provided by a voice taking users into account. An information providing system provides information using a voice. A position direction acquisition unit acquires position information indicating a position of a user, and sight direction information indicating a sight direction that is a direction that a face of the user faces. A storage unit stores, in advance, object position information indicating respective positions of a plurality of objects that may be viewed by the user, and explanation information for explaining each of the objects. An estimation unit estimates the object being viewed by the user based on the position information and the sight direction information of the user, and the object position information. An information output unit outputs the explanation information of the estimated object using the voice.

Abstract: A control device calculates a voltage command value for an inverter by executing feedback control that causes a current value of a three-phase motor to follow a current command value for the motor. The control device includes a compensation calculator that calculates, using a rotation angle of the motor, a correction voltage added to the voltage command value to compensate for torque ripple of the motor. The correction voltage is a sine wave that is in antiphase with the torque ripple, and is obtained by adding together a real part, a cosine wave component, and an imaginary part, a sine wave component that have the same frequency. The compensation calculator is configured to calculate amplitudes of the cosine wave component and the sine wave component from the current command value and a rotation speed of the motor.

Abstract: A method for checking compliance of a mechanical part of a vehicle, including an image capture step for producing a study image of the mechanical part, and a step of analyzing the study image by an analysis unit, the analysis step including a results phase transmitting a results signal indicating whether the mechanical part is compliant or non-compliant.

Abstract: A method for controlling an assist motor of a power steering system, power steering system including the assist motor configured to apply a motor torque on a rack, and at least one steering computer, method being designed to servo-control a position of the rack to a position setpoint, method including: a maneuvering step in which the assist motor exerts a motor torque on the rack according to a motor torque setpoint; wherein the method also includes: servo-control step in which the steering computer determines a speed setpoint of the rack according to the position setpoint and to the position of the rack; limitation step in which the steering computer issues a limited speed setpoint which is lower than or equal to a maximum speed threshold; control step in which the steering computer determines the motor torque setpoint according to the limited speed setpoint and to a speed of the rack.