摘要:
In vehicular velocity controlling method and apparatus for an automotive vehicle, an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle is detected, a target vehicular velocity is calculated to make a detected value of the inter-vehicle distance substantially equal to a target inter-vehicle distance, a vehicular velocity of the vehicle is detected, the vehicular velocity of the vehicle is adjustably controlled to make a detected value of the vehicular velocity substantially equal to the target vehicular velocity, a target braking pressure for a vehicular brake system is calculated in accordance with a target deceleration variable calculated on the basis of the target vehicular velocity and the detected value of the vehicular velocity; and a limitation on a rate of increase in the target braking pressure is placed when the target braking pressure is in excess of a predetermined braking pressure threshold value.
摘要:
When a vehicle-to-vehicle time gap is changed from a first level to a second level with a selector switch, a controller determines a desired time gap so that the desired time gap varies from the first level to the second level at such a gradual rate as to prevent an abrupt change in the vehicle speed. The controller further determines a desired vehicle spacing from the controlled vehicle to a preceding vehicle in accordance with the desired time gap and a sensed vehicle speed, and controls the driving force and braking force of the controlled vehicle so as to bring the actual vehicle spacing closer to the desired vehicle spacing.
摘要:
A preceding-vehicle follow-up control system is arranged to calculate a target vehicle speed based on a vehicle-to-vehicle distance and a controlled-vehicle speed, to calculate a target acceleration based on the target vehicle speed and to control driving force and braking force of the controlled vehicle based on the target acceleration. During this control period, the target acceleration is limited by an acceleration limit and a deceleration limit which are varied according the controlled-vehicle speed, respectively. This arrangement enables a follow-up vehicle speed control to be preferably executed without applying a strange feeling to a driver.
摘要:
A preceding-vehicle follow-up control system is arranged to calculate a target vehicle speed employed for bringing a detected vehicle-to-vehicle distance closer to a target vehicle-to-distance, to control the controlled-vehicle speed to bring a controlled-vehicle speed closer to the target vehicle speed, to decelerate the controlled-vehicle speed to a set vehicle speed at a rate of a preset deceleration when the controlled-vehicle speed is greater than a control continuation decision value greater than an upper limit of the set vehicle speed and when the accelerating operation is terminated. This arrangement provides a smooth drive feeing to a driver even after an acceleration of the controlled vehicle is executed during a follow-up control and is terminated.
摘要:
In vehicular velocity controlling method and apparatus for an automotive vehicle, an inter-vehicle distance from the vehicle to a preceding vehicle which is running ahead of the vehicle is detected, a relative velocity of the vehicle to the preceding vehicle is detected, a vehicular velocity of the vehicle is detected, a target value of the vehicular velocity to make a detected value of the inter-vehicle distance substantially equal to a target value of the inter-vehicle distance is calculated on the basis of the detected value of the inter-vehicle distance and a detected value of the vehicular velocity, the vehicular velocity is controlled to make the detected value of the vehicular velocity substantially equal to the target value of the vehicular velocity, a magnitude of a turning (for example, a lateral acceleration) of the vehicle is detected, a correction coefficient of the magnitude of the turning of the vehicle is calculated in accordance with the detected value of the vehicular velocity, and the target value of the vehicular velocity is corrected on the basis of the turning magnitude correction coefficient by which the detected value of the turning magnitude is corrected.
摘要:
In a vehicular velocity controlling apparatus for an automotive vehicle, a vehicular velocity detector is provided to detect a vehicular velocity of the vehicle, a vehicular velocity controlling section is provided that controls a vehicular driving force of the vehicle to make a detected value of the vehicular velocity substantially equal to a set vehicular velocity previously set, a plurality of switches are provided which includes a first switch (SET/COAST switch) and a second switch (RESUME/ACCELERATE switch), each switch being enabled to be interlocked with a predetermined operation of at least one switching member at a position such as to match with a general vehicular occupant's sense of vehicular manipulation, and a set vehicular velocity modifying section is provided that modifies the set vehicular velocity in such a manner that the detected value of the vehicular velocity is set to the set vehicular velocity when at least one of the following conditions is established, when a time duration of the predetermined operation of the first switch is equal to or longer than a first predetermined time duration and the detected value of the vehicular velocity is lower than the set vehicular velocity and when the time duration of the predetermined operation of the second switch is equal to or longer than a second predetermined time duration and the detected value of the vehicular velocity is higher than the set vehicular velocity.
摘要:
A headway maintenance assist system is provided with a correction section in which a drive force/accelerator actuation relationship between an accelerator actuation amount and a target drive force is changed to a drive force/accelerator relationship that is different than an ordinary drive force/accelerator relationship so that the driver more readily notices the accelerator reaction force when the accelerator reaction force is applied to the accelerator to alert the driver under prescribed conditions.
摘要:
A vehicle headway maintenance assist system is provided that provides a haptic notification to an accelerator to alert the driver under prescribed conditions. The vehicle headway maintenance assist system includes a preceding vehicle detection section, a reaction force generating section, and a control section. The preceding vehicle detection section is configured to detect a headway distance between a host vehicle and a preceding vehicle. The reaction force generating section is configured to generate a reaction force based on the headway distance detected by the preceding vehicle detection section. The control section is configured to control a relationship between a driving force and an accelerator actuation amount by a driver to increase the accelerator actuation amount at a time before the reaction force generating section generates the reaction force.
摘要:
A vehicle headway maintenance assist system is configured to perform a haptic notification control of an accelerator to prompt the driver to release the accelerator when the accelerator is being operated and to perform a deceleration control of the vehicle based on headway distance when the accelerator is being operated as long as the headway distance from a preceding vehicle is less than a prescribed headway distance threshold.
摘要:
In automatic velocity controlling apparatus and method for an automotive vehicle, an inter-vehicle distance detector is provided for detecting an inter-vehicle distance from the vehicle to another vehicle which is running at the detected inter-vehicle distance with respect to the vehicle. A vehicular running controller is provided for effecting a vehicular running control such that the vehicle follows up the other vehicle maintaining the inter-vehicle distance to the other vehicle at a predetermined inter-vehicle distance. An inter-vehicle distance determinator is provided for determining whether the inter-vehicle distance detector transfers from a first state in which the inter-vehicle distance to the other vehicle is detected to a second state in which the inter-vehicle distance to the other vehicle is undetected. A deceleration controlled state determinator is provided for determining whether the vehicle is in a deceleration controlled state when the inter-vehicle distance determinator determines that the vehicle has transferred from the first state to the second state. A deceleration keep command generator is provided for generating and outputting a vehicular deceleration keep command to the vehicular running controller to maintain a vehicular deceleration at a value which is immediately before the inter-vehicle distance determinator determines that the inter-vehicle distance detector has transferred from the first state to the second state when the deceleration controlled state determinator determines that the vehicle is in the deceleration controlled state.