Vehicle travel control apparatus

• US 20060149453A1
• Filed: 03/07/2006
• Published: 07/06/2006
• Est. Priority Date: 06/20/2000
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Endo, Yoshinori, Nishino, Kimio, Minowa, Toshimichi, Takezaki, Jiro, Yoshikawa, Tokuji, Kuragaki, Satoru
• Granted Patent: US 7,206,685 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60K 31/0008 including means for detecting potential obstacles in vehicle path
• CPC Class Codes: B60K 31/0058 responsive to externally generated signalling
• CPC Class Codes: B60K 31/0066 responsive to vehicle path curvature
• CPC Class Codes: B60K 31/04 and means for comparing one electrical quantity, e.g. voltage, pulse, waveform, flux, or the like, with another quantity of a like kind, which comparison means is involved in the development of an electrical signal which is fed into the controlling means
• CPC Class Codes: B60K 31/107 the memory being digital
• CPC Class Codes: B60T 2201/02 Active or adaptive cruise control system; Distance control
• CPC Class Codes: B60W 2520/14 Yaw
• CPC Class Codes: B60W 2520/28 Wheel speed
• CPC Class Codes: B60W 2552/05 Type of road, e.g. motorways, local streets, paved or unpaved roads
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: F02B 2075/125 Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
• CPC Class Codes: F02B 23/101 the injector being placed on or close to the cylinder centre axis, e.g. with mixture formation using spray guided concepts
• CPC Class Codes: F16H 2059/666 Determining road conditions by using vehicle location or position, e.g. from global navigation systems [GPS]
• CPC Class Codes: F16H 2061/022 Calculation or estimation of optimal gear ratio, e.g. best ratio for economy drive or performance according driver preference, or to optimise exhaust emissions
• CPC Class Codes: F16H 61/0213 characterised by the method for generating shift signals
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G06F 2009/45583 Memory management, e.g. access or allocation
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system

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.

Claims

1. A braking apparatus, comprising:

at least one hydraulic pump;

a brake controller; and

a speed controlling controller;

wherein said speed controlling controller having a function specifying a self-position of a vehicle, and a function specifying a curvature radius of a road where the vehicle is positioned; and

making a brake instruction based on the self-position of the vehicle and the curvature radius of the road, in which the brake instruction is output to said brake controller; and

said brake controller controlling said hydraulic pump based on the brake instruction.

2. A braking apparatus according to claim 1, further comprising:

a braking mechanism generating a braking effort in the vehicle;

a master cylinder generating a braking liquid pressure by an operation of a braking pedal by a driver; and

a pressure selecting valve selecting one of the braking liquid pressure from said master cylinder and a braking liquid pressure from said hydraulic pump, and transmitting it to said braking mechanism.

3. A braking apparatus according to claim 1, further comprising:

a hydraulic unit for an anti-lock braking system (ABS);

wherein said brake controller controls said hydraulic pump and said hydraulic unit for the ABS.

4. A braking apparatus according to claim 3, further comprising:

a range sensor;

wherein said brake controller controls said hydraulic pump and said hydraulic unit for the ABS based on an information of said range sensor.