Abstract: A tractor vehicle operation control device includes a yaw rate sensor, which detects the actual yaw rate, and a controller, which executes damping control for increasing braking power on the vehicle wheels based on the actual yaw rate and damping periodic yaw motion of the tractor vehicle originating in a trailer. The controller, based on the actual yaw rate, calculates a yaw indicator representing the degree of yaw motion, and sets the front wheels braking power to be greater and sets the rear wheels braking power to be less as the yaw indicator increases. For example, the controller calculates a peak value of the actual yaw rate and determines the actual yaw rate peak value to be the yaw rate. The controller also may calculate yaw angular acceleration based on the actual yaw rate and determine a yaw indicator based on the peak value of the yaw angular acceleration.

Abstract: A tractor vehicle operation control device includes a yaw rate sensor, which detects the actual yaw rate, and a controller, which executes damping control for increasing braking power on the vehicle wheels based on the actual yaw rate and damping periodic yaw motion of the tractor vehicle originating in a trailer. The controller, based on the actual yaw rate, calculates a yaw indicator representing the degree of yaw motion, and sets the front wheels braking power to be greater and sets the rear wheels braking power to be less as the yaw indicator increases. For example, the controller calculates a peak value of the actual yaw rate and determines the actual yaw rate peak value to be the yaw rate. The controller also may calculate yaw angular acceleration based on the actual yaw rate and determine a yaw indicator based on the peak value of the yaw angular acceleration.

Abstract: A first stabilizer (SBr) is disposed on an axle for driving wheels, a second stabilizer (SBf) is disposed on a different axle from the axle for driving wheels, a stabilizer control unit (RT, FT) is provided for adjusting torsional rigidity of the first stabilizer and second stabilizer, a turning state amount obtaining unit is provided for obtaining a turning state amount of the vehicle, and an accelerating operation amount obtaining unit is provided for obtaining an accelerating operation amount operated by a vehicle driver. Based on these obtained results, the torsional rigidity of at least one of the first stabilizer and second stabilizer is adjusted by the stabilizer control unit, when the turning state amount of the vehicle is equal to or more than a predetermined turning state amount, and the accelerating operation amount is equal to or more than a predetermined accelerating operation amount.

Abstract: A motion control system is applied to a vehicle, which has front wheel side suspensions with an anti-dive geometry and rear wheel side suspensions with an anti-lift geometry. When abrupt steering operation is started from a straight-ahead driving state of the vehicle in a non-operating period of a brake pedal of the vehicle, a controller controls a hydraulic unit such that a brake force is applied to a radially outer one of front left and right wheels, which is located on an outer side in a radial direction of an arc of turn of the vehicle upon starting the steering operation, and also to a radially inner one of rear left and right wheels, which is located on an inner side in the radial direction of the arc of the turn for a predetermined short time period.

Abstract: A motion control device for a vehicle includes a controlling means for maintaining a traveling stability of the vehicle by controlling a braking force of a wheel of the vehicle, a friction coefficient obtaining means for obtaining a friction coefficient of a road surface on which the vehicle travels, a lateral force reference value calculating means for calculating a lateral force reference value acting on the wheel on the basis of the friction coefficient of the road surface and a lateral force actual value obtaining means for obtaining a lateral force actual value acting on the wheel, wherein the controlling means controls the braking force on the basis of a comparison result between the lateral force reference value and the lateral force actual value.

Abstract: A motion control system is applied to a vehicle, which has front wheel side suspensions with an anti-dive geometry and rear wheel side suspensions with an anti-lift geometry. A degree of an anti-lift effect of the anti-lift geometry is larger than a degree of an anti-dive effect of the anti-dive geometry. Normally, a controller controls a hydraulic unit such that a brake force distribution between front wheels and rear wheels during a braking-period is adjusted to a basic distribution. In contrast, in a state where abrupt application of brakes is started, the controller controls the hydraulic unit such that the brake force distribution is adjusted to a first distribution, at which a brake force respectively applied to the rear wheels is larger than that of the basic distribution only for a predetermined short time period upon starting of the application of the brakes.

Abstract: A braking force application control is performed when a change in a driver's posture takes place while a brake pedal is turned on when a vehicle is stopped. As a consequence, in a case in which the driver's posture changes such as when the driver turns to a rear seat side to get something without intending to release depression of the brake pedal, creep of the vehicle that the driver does not intend to happen can be inhibited. Furthermore, the vehicle stop retention is only performed when a travelling direction is a forward direction or a seatbelt is worn. As a result, performance of the vehicle stop retention can be inhibited when it is considered that the driver intentionally desires to let the vehicle creep.

Abstract: A motion control system is applied to a vehicle, which has front wheel side suspensions with an anti-dive geometry and rear wheel side suspensions with an anti-lift geometry. When abrupt steering operation is started from a straight-ahead driving state of the vehicle in a non-operating period of a brake pedal of the vehicle, a controller controls a hydraulic unit such that a brake force is applied to a radially outer one of front left and right wheels, which is located on an outer side in a radial direction of an arc of turn of the vehicle upon starting the steering operation, and also to a radially inner one of rear left and right wheels, which is located on an inner side in the radial direction of the arc of the turn for a predetermined short time period.

Abstract: A motion control system is applied to a vehicle, which has front wheel side suspensions with an anti-dive geometry and rear wheel side suspensions with an anti-lift geometry. A degree of an anti-lift effect of the anti-lift geometry is larger than a degree of an anti-dive effect of the anti-dive geometry. Normally, a controller controls a hydraulic unit such that a brake force distribution between front wheels and rear wheels during a braking-period is adjusted to a basic distribution. In contrast, in a state where abrupt application of brakes is started, the controller controls the hydraulic unit such that the brake force distribution is adjusted to a first distribution, at which a brake force respectively applied to the rear wheels is larger than that of the basic distribution only for a predetermined short time period upon starting of the application of the brakes.

Abstract: A vehicle control device includes a turning state changing mechanism for changing a turning state of a vehicle on the basis of a turning state changing command, and a curve-driving assessment portion for inputting therein a curve characteristic information including a shape of a curve existing in a traveling direction of the vehicle and a line-of-sight information relating to a line-of-sight of a driver and for outputting the turning state changing command to the turning state changing mechanism on the basis of the curve characteristic information and the line-of-sight information.

Abstract: A motion control device for a vehicle includes a controlling means for maintaining a traveling stability of the vehicle by controlling a braking force of a wheel of the vehicle, a friction coefficient obtaining means for obtaining a friction coefficient of a road surface on which the vehicle travels, a lateral force reference value calculating means for calculating a lateral force reference value acting on the wheel on the basis of the friction coefficient of the road surface and a lateral force actual value obtaining means for obtaining a lateral force actual value acting on the wheel, wherein the controlling means controls the braking force on the basis of a comparison result between the lateral force reference value and the lateral force actual value.

Abstract: A brake apparatus is provided for braking a vehicle wheel, and includes a brake member rotated integrally with the wheel, a friction member mounted on the vehicle to be in contact with the brake member, a rotation member rotated integrally with the wheel, an electric motor, and a differential shift device. A motion converter is provided for converting a rotating motion of the motor into a thrust motion of the friction member to be pressed onto the brake member. For example, one of three components of the differential shift device is movable in response to rotation of the rotation member, another one is movable in response to rotation of the electric motor, and the rest is movable in response to operation of the motion converter.

Abstract: A motor driven brake apparatus is provided for braking a wheel mounted on a knuckle, and includes a brake member rotated integrally with the wheel, a friction member mounted on the knuckle to be capable of being in contact with the brake member, and an electric motor for driving the friction member toward the brake member to be in contact therewith. The motor is adapted to press the friction member onto the brake member to restrain the wheel from rotating. And, a motion converter is accommodated in an opening portion of the knuckle for converting rotating force of the motor into pressing force applied by the friction member onto the brake member. The motion converter is connected to the motor at a side thereof facing the vehicle body, and the motor is mounted on the knuckle.

Abstract: A braking force application control is performed when a change in a driver's posture takes place while a brake pedal is turned on when a vehicle is stopped. As a consequence, in a case in which the driver's posture changes such as when the driver turns to a rear seat side to get something without intending to release depression of the brake pedal, creep of the vehicle that the driver does not intend to happen can be inhibited. Furthermore, the vehicle stop retention is only performed when a travelling direction is a forward direction or a seatbelt is worn. As a result, performance of the vehicle stop retention can be inhibited when it is considered that the driver intentionally desires to let the vehicle creep.

Abstract: A braking force reduction control that reduces the braking force applied to the vehicle wheels is performed when braking of the vehicle is detected. More specifically, the braking force reduction control is started when a speed change of the deceleration of the vehicle has a reducing tendency, namely, when the speed change is equal to or less than a predetermined threshold value.

Abstract: A motor driven brake apparatus is provided for braking a wheel mounted on a knuckle, and includes a brake member rotated integrally with the wheel, a friction member mounted on the knuckle to be capable of being in contact with the brake member, and an electric motor for driving the friction member toward the brake member to be in contact therewith. The motor is adapted to press the friction member onto the brake member to restrain the wheel from rotating. And, a motion converter is accommodated in an opening portion of the knuckle for converting rotating force of the motor into pressing force applied by the friction member onto the brake member. The motion converter is connected to the motor at a side thereof facing the vehicle body, and the motor is mounted on the knuckle.

Abstract: A brake apparatus is provided for braking a vehicle wheel, and includes a brake member rotated integrally with the wheel, a friction member mounted on the vehicle to be in contact with the brake member, a rotation member rotated integrally with the wheel, an electric motor, and a differential shift device. A motion converter is provided for converting a rotating motion of the motor into a thrust motion of the friction member to be pressed onto the brake member. For example, one of three components of the differential shift device is movable in response to rotation of the rotation member, another one is movable in response to rotation of the electric motor, and the rest is movable in response to operation of the motion converter.