Abstract:
If a condition for finishing speed limit control is satisfied, a gradient of a slope of the road is estimated based on a steady component of the longitudinal acceleration of the vehicle, and a correction factor is computed based on the slope gradient of the road, while a target acceleration of the vehicle is computed based on the vehicle speed. Then, a target vehicle speed is computed by adding the target vehicle speed of the last cycle to the product of the correction factor, target acceleration and the cycle time of the control, and the braking or driving force of each wheel is controlled so that the vehicle speed becomes equal to the target vehicle speed. In this manner, a passenger of the vehicle is prevented from feeling uncomfortable about the speed increase after the completion of the vehicle speed limit control.
Abstract:
A vehicle travel control device has a engine that controls an engine based on a driving target controlled variable; a brake that controls a brake device based on a braking target controlled variable; and a automatic travel control that calculates the driving target controlled variable and/or braking target controlled variable so that a vehicle speed of a vehicle becomes a target vehicle speed, and outputs the driving target controlled variable to the engine and the braking target controlled variable to the brake, the vehicle travel control device being configured such that, upon detection of an acceleration operation during the vehicle travel control, the automatic travel control calculates a target vehicle speed for vehicle travel control by the brake device, so that the target vehicle speed becomes higher than a current vehicle speed of the vehicle.
Abstract:
A running control apparatus for a vehicle includes a required driving output deciding unit that decides a required driving force of a driving system of the vehicle on the basis of an integrated value of a difference between a target vehicle speed and an actual vehicle speed, a driving control unit that controls the actuation of the driving system on the basis of the required driving force, and a determination unit that determines whether or not the required driving force is unrealizable in the control of the driving system due to the intervention of additional control. The required driving output deciding unit imposes a limit on an increase or a decrease in the required driving force when the determination unit determines that the required driving force is unrealizable in the control of the driving system.
Abstract:
A vehicle travel control device has a engine that controls an engine based on a driving target controlled variable; a brake that controls a brake device based on a braking target controlled variable; and a automatic travel control that calculates the driving target controlled variable and/or braking target controlled variable so that a vehicle speed of a vehicle becomes a target vehicle speed, and outputs the driving target controlled variable to the engine and the braking target controlled variable to the brake, the vehicle travel control device being configured such that, upon detection of an acceleration operation during the vehicle travel control, the automatic travel control calculates a target vehicle speed for vehicle travel control by the brake device, so that the target vehicle speed becomes higher than a current vehicle speed of the vehicle.
Abstract:
If a condition for finishing speed limit control is satisfied, a gradient of a slope of the road is estimated based on a steady component of the longitudinal acceleration of the vehicle, and a correction factor is computed based on the slope gradient of the road, while a target acceleration of the vehicle is computed based on the vehicle speed. Then, a target vehicle speed is computed by adding the target vehicle speed of the last cycle to the product of the correction factor, target acceleration and the cycle time of the control, and the braking or driving force of each wheel is controlled so that the vehicle speed becomes equal to the target vehicle speed. In this manner, a passenger of the vehicle is prevented from feeling uncomfortable about the speed increase after the completion of the vehicle speed limit control.
Abstract:
A road slope determining apparatus for a vehicle includes a slope measuring device that measures a slope of a road on which the vehicle is traveling; a distance measuring device that measures a distance traveled by the vehicle; and a determining apparatus that determines, based on the measured slope and the measured distance traveled, whether the vehicle is traveling on a gradient in which the slope is continuous or on a rough road in which the slope is discontinuous. This road slope determining apparatus is able to appropriately determine whether the road has a slope when the vehicle is traveling at slow speeds such as when running off-road, for example.
Abstract:
A vehicle device control device includes an automatic drive control device for executing an automatic drive control by controlling at least a driving torque generating device, which applies a driving torque on a vehicle, so that a vehicle speed reaches a preset target vehicle speed, and a shift position determination portion for determining a shift position of a gear lever of the vehicle, wherein in a case where the shift position determination portion determines that the gear lever is set at a neutral position on the basis of a determination result of the shift position determination portion while the automatic drive control is executed, the automatic drive control device controls the driving torque generating device so that the driving torque applied to the vehicle becomes zero while continuously executing the automatic drive control.
Abstract:
A vehicle control apparatus controlling a driving force or a braking force to be applied to a vehicle and conducting a vehicle control based on wheel speeds includes a detecting means detecting the wheel speed of each wheel provided at the vehicle, a storing means storing a predetermined valid wheel speed for each wheel, a determining means determining whether a difference between the detected wheel speed and a maximum wheel speed of the wheel speeds lies in a predetermined range, and an updating means updating the valid wheel speed based on the detected wheel speed of the wheel, when the detected wheel speed is lower than the predetermined valid wheel speed which is currently stored, in case that a result determined by the determining means is positive.
Abstract:
A vehicle control device for controlling the driving force and the braking force that is applied to a vehicle to approach a target wheel speed includes a plurality of determination parts that determine the wheel speed at a corresponding wheel; and a calculation part that calculates a valid wheel speed threshold for each wheel based on determined wheel speeds. The vehicle control device also includes a decision part that decides whether wheel speed is valid depending on whether the valid wheel speed threshold calculated for each wheel is below a specific speed threshold value, which is below the target wheel speed, and an estimation part that estimates the vehicle speed using the wheel speeds that are determined as being valid.
Abstract:
An electronic control device reduces, after a time at which constant speed traveling control is terminated (specific control termination time) not by an accelerating operation or braking operation but by, for example, an operation of a control switch, the vehicle driving force to a force corresponding to the amount of accelerating operation at the specific control termination time. Also, the electronic control device changes the vehicle braking force to a force corresponding to the amount of braking operation at the specific control termination time by controlling the braking hydraulic pressures with a hydraulic pressure circuit so that the value of a vehicle propulsive force, which takes a positive value when acting in the same direction as the driving force (and takes a negative value when acting in the opposite direction of the driving force) and which has a magnitude equal to a value resulting from subtracting the magnitude of the braking force from the magnitude of the driving force, is equal to or smaller than the value of the vehicle propulsive force at the specific control termination time.