Abstract:
In a vehicular velocity controlling system and method, a vehicular velocity control is performed in such a manner that an inter-vehicle distance of a host vehicle to a preceding vehicle is substantially made equal to a target inter-vehicle distance during a presence of the preceding vehicle and in such a manner that the vehicular velocity is substantially made equal to a set vehicular velocity during an absence of the preceding vehicle, a frictional coefficient of a road surface on which the host vehicle is running or about to run is detected, an upper limit value for the vehicular velocity control is set in accordance with the detected road surface frictional coefficient, below the upper limit value of which the vehicular velocity control is enabled to be performed in such a manner that as the road surface frictional coefficient becomes lower, the upper limit value becomes lower.
Abstract:
A collision avoiding system is provided to enhance a collision avoiding effect by stabilizing a vehicle behavior during automatic braking. Steering controlling apparatus includes not only an ordinary electric power steering control unit but also an active steering reaction calculating unit for driving a motor of a steering system to compensate for the influence of disturbances, if the vehicle is shocked by an unusual bounce from an uneven road or the like. When obstacle detecting apparatus such as a laser-radar detects an obstacle which requires operation of automatic braking, a control parameter changing unit receives the automatic braking activating signal to make a change in the control parameters for an active steering reaction control. As a result, the steering control apparatus controls steering to suppress the influence of the disturbances more substantially during automatic control of the vehicle than otherwise, so that the turbulence of the vehicle can be prevented to retain a sufficient braking force, thereby enhancing the collision avoiding effect.
Abstract:
In a vehicular velocity controlling system and method, a vehicular velocity control is performed in such a manner that an inter-vehicle distance of a host vehicle to a preceding vehicle is substantially made equal to a target inter-vehicle distance during a presence of the preceding vehicle and in such a manner that the vehicular velocity is substantially made equal to a set vehicular velocity during an absence of the preceding vehicle, a frictional coefficient of a road surface on which the host vehicle is running or about to run is detected, an upper limit value for the vehicular velocity control is set in accordance with the detected road surface frictional coefficient, below the upper limit value of which the vehicular velocity control is enabled to be performed in such a manner that as the road surface frictional coefficient becomes lower, the upper limit value becomes lower.
Abstract:
A vehicle travel control apparatus includes a radar sensor, a vehicle speed controller, a hydraulic pump, a proportional solenoid valve and a brake controller. When the vehicle speed controller judges a braking situation based on information from the radar sensor, the brake controller actuates the hydraulic pump and the proportional solenoid valve based on a command from the vehicle speed controller, and controls a braking torque of wheels.
Abstract:
When a turning state of a subject vehicle is detected, the action timing of the contact avoidance support device is slower than when the turning state is not detected. When an action timing determining part 22 estimates that there is the possibility of the subject vehicle coming into contact with the vehicle in front and a turning state of the subject vehicle is detected based on the output from a transversal acceleration sensor S4, a changing rate of the steering angle sensor S5, and a yaw rate sensor S3, a compensation interval calculating part 23 calculates a compensation interval depending on the size of the detected turning state (the amount of the steering angle, the changing rate of the steering angle, and the transversal acceleration). The action timing of the brake actuator 12 is slowed by this compensation interval.
Abstract:
In an adaptive speed control system for a vehicle, a method and system for controlling vehicle deceleration are provided. The method includes determining a speed of the vehicle, and setting a maximum allowed vehicle deceleration based on the vehicle speed determined. The system includes a receiver capable of receiving an input signal indicative of a speed of the vehicle, and a controller capable of setting a maximum allowed vehicle deceleration based on the vehicle speed.
Abstract:
A braking control system includes an object detector, a host vehicle speed sensor, and a control unit configured to be electronically connected to at least the object detector and the host vehicle speed sensor for automatically controlling, depending on a host vehicle speed and a relative distance, a braking force needed for an automatic braking operation, containing preliminary braking control and supplementary braking control, without driver's braking action when a host vehicle is approaching a frontally positioned object. The control unit detects the presence or absence of a driver's intention for lane-changing. In the presence of the driver's intention for lane-changing, the preliminary braking control initiated prior to the driver's braking action is inhibited or the degree of limitation on the supplementary braking control, through which a value of a controlled quantity is brought closer to a target deceleration rate needed for collision-avoidance, is reduced.
Abstract:
A vehicle traveling control system is comprised of a following controller and a lane-keeping controller. The following controller controls an inter-vehicle distance between a host vehicle and a following object ahead of the host vehicle by controlling a vehicle speed on the basis of a detected inter-vehicle distance. The lane-keeping controller controls a steering control of the host vehicle so as to locate the host vehicle within a lane traveled by the host vehicle. A control condition of one of the following control and the steering control is changed according to the control condition of the other of the following control and the steering control.
Abstract:
An object of the present invention is to provide a vehicle control apparatus which makes it possible to share information by a plurality of devices and which can improve controllability. An OS switching means (OS-CH) switches a plurality of operating system (OS1, OS2). A shared object (CO) has a memory resource which can be referred to from the plurality of operating systems. The shared object (CO) shares at least road information, and the road information registered by the application of one of the operating systems can be referred to from the application of the other operating system.
Abstract:
The present invention describes a coordination device for nominal values for the brake and/or the engine. The arrangement is based on a system wherein various components contribute to controlling the longitudinal dynamics of a vehicle. According to the present invention, these components generate in parallel to each other intermediate nominal values for the brake and/or the engine. According to the intermediate nominal values prevailing, coordination devices generate engine or brake nominal values which are sent to the corresponding components.