Abstract: A steering control device includes a target steering corresponding value computing unit configured to compute a target steering corresponding value. The target steering corresponding value computing unit is configured to execute low sensitivity determination processing for determining whether or not a low sensitivity condition for reducing an amount of change in the steered angle with respect to an amount of change in an amount of operation of an operating lever is satisfied, normal computation processing for computing the target steering corresponding value based on the amount of operation when the low sensitivity condition is not satisfied, and low sensitivity computation processing for computing, based on the amount of operation, the target steering corresponding value having a smaller absolute value than the target steering corresponding value computed by the normal computation processing, when the low sensitivity condition is satisfied.

Abstract: A composite valve sub assembly includes a tubular sleeve inserted into a single attachment hole of a body; an electromagnetic valve body housed in the sleeve; a solenoid actuator configured to move the electromagnetic valve body in the sleeve; a plug fixed at an end portion of the sleeve and disposed between the sleeve and a bottom surface of the attachment hole; and a check valve body disposed on the opposite side of the electromagnetic valve body from the plug. The plug has an internal flow path including a first opening connected to a first flow path of the body and opened and closed by the electromagnetic valve body, and a second opening connected to a second flow path of the body and opened and closed by the check valve body.

Abstract: In a steering control device configured to control a steering system where a steering torque required for steering a steering wheel is changed using a motor torque, a processing circuit includes a first calculation situation where a calculational hysteresis component for adding a first hysteresis characteristic to a torque component is calculated and a second calculation situation where the calculational hysteresis component for adding a second hysteresis characteristic to the torque component is calculated. In the second calculation situation after change from the first calculation situation, the processing circuit calculates a value corresponding to an origin in the second hysteresis characteristic at a time when the calculational hysteresis component enabling a value of the calculational hysteresis component at a timing of the change from the first calculation situation to be maintained is calculated, and calculates the calculational hysteresis component using the calculated value as the origin.

Abstract: A control device for an in-vehicle unit installed in a vehicle having a warning light includes a control circuit and a storage circuit. The control circuit executes an abnormality detection process, a detection result write-in process, and a lighting request output process. The storage circuit retains contents of the history information even when the in-vehicle unit is powered on or powered off. The control circuit is configured to retrieve the contents of the history information from the storage circuit when the in-vehicle unit is powered on. When the detection history is written in the retrieved contents, the control circuit outputs the lighting request even when an abnormality of the in-vehicle unit cannot be detected by the abnormality detection process.

Abstract: A control device of a motor unit includes an external connector, a first board, a second board, and a circuit component. The external connector has a base portion, and a positioning pin that projects from the base portion toward a motor. The first board has a first through hole, and the second board has a second through hole provided at a position corresponding to the first through hole. The common positioning pin is inserted into the first through hole and the second through hole.

Abstract: A jackknife suppression device is configured to execute an acquisition process, a prediction process, a determination process, and a treatment process. The acquisition process is a process of acquiring a hitch angle variable and a steered angle variable. The prediction process is a process of calculating a predicted value of the hitch angle using the hitch angle variable and the steered angle variable as inputs. The determination process is a process of determining whether there is a high risk that a jackknife occurs using the predicted value and the steered angle variable as inputs. The treatment process is a process of operating predetermined hardware in order to suppress occurrence of the jackknife when it is determined that the risk is high.

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 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 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 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: 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 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: 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, and that executes a reaction force setting process, a phase compensation process, and a reaction force application process. The reaction force setting process is a process of setting the steering reaction force using the phase compensation process. The reaction force application process is a process of operating the reaction force motor so as to produce a reaction force as set by the reaction force setting process. The phase compensation process is a process of performing phase compensation of the steering reaction force in a different manner when a travel mode of a vehicle is different.

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: 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 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: 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: 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: 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.