Apparatus and system for controlling automatic stopping of vehicle

• US 8,660,767 B2
• Filed: 08/08/2008
• Issued: 02/25/2014
• Est. Priority Date: 08/10/2007
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Nakai, Yasuhiro, Fukuda, Shotaro, Niwa, Satoshi, Kumabe, Hajime, Mori, Yukio, Kodama, Hiroyuki, Yokoyama, Takahisa
• Primary Examiner(s): To, Tuan C.
• Application Number:
  US12/188,610
• Publication Number:
  US 20090043474A1
• Time in Patent Office: 2,027 Days
• Field of Search: 701/70, 701/93, 477/92, 180/170, 180/282
• US Class Current: 701/70
• CPC Class Codes: B60W 10/00 Conjoint control of vehicle sub-units of different type or different function for propulsion of purely electrically-propelled vehicles with power supplied within the vehicle B60L50/00 - B60L58/00
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 10/184 with wheel brakes
• CPC Class Codes: B60W 2050/0008 Feedback, closed loop systems or details of feedback error signal
• CPC Class Codes: B60W 2050/0012 Feedforward or open loop systems
• CPC Class Codes: B60W 2050/0031 Mathematical model of the vehicle
• CPC Class Codes: B60W 2050/0042 Transfer function lag; delays
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: B60W 2710/1005 Transmission ratio engaged
• CPC Class Codes: B60W 2710/182 Brake pressure, e.g. of fluid or between pad and disc
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 2720/103 Speed profile
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/09 Taking automatic action to avoid collision, e.g. braking and steering
• CPC Class Codes: B60W 30/143 Speed control B60W30/16 takes precedence
• CPC Class Codes: B60W 30/17 with provision for special action when the preceding vehicle comes to a halt, e.g. stop and go
• CPC Class Codes: B60W 30/181 Preparing for stopping
• CPC Class Codes: B60W 30/18109 Braking
• CPC Class Codes: G01S 13/931 : of land vehicles
• CPC Class Codes: Y02T 10/40 : Engine management systems

Abstract

A control apparatus is provided to control the stopping of a vehicle. The control apparatus comprises a speed detector that detects a speed of a vehicle, speed acquiring means, target setting means, and control means. The speed acquiring means acquires an actual speed of the vehicle from detected results of the speed detector. The target setting means sets a target acceleration of the vehicle depending on the actual speed when the vehicle is stopped automatically. The control means controls an actual acceleration of the vehicle at the target acceleration.

Claims

1. A control apparatus for controlling stopping of a vehicle, comprising:

a speed detector that detects a speed of a vehicle; and

a control unit that controls an automatic stop of the vehicle,

wherein the control unit comprises

automatic stop means for stopping the vehicle automatically when a predetermined operating condition of the vehicle is met;

speed acquiring means for acquiring an actual speed of the vehicle from detected results of the speed detector;

target setting means for setting a target acceleration of the vehicle depending on the actual speed when the vehicle is stopped automatically by the automatic stop means; and

control means for controlling an actual acceleration of the vehicle at the target acceleration,

wherein the target setting means has a vehicle model to which different target acceleration so patterns depending on different travels speeds of the vehicle are given and from which travel speeds and accelerations are outputted depending on the inputted target acceleration patterns, and

the target acceleration is adapted based on both the travel speeds and the accelerations outputted from the vehicle model.

2. A control apparatus for controlling stopping of a vehicle, comprising:

a speed detector that detects a speed of a vehicle; and

a controller that controls an automatic stop of the vehicle and that is cooperatively operable with the speed detector, wherein the controller is configured to;

cause the vehicle to stop automatically when a predetermined operating condition of the vehicle is met;

acquire an actual speed of the vehicle from detected results of the speed detector;

set a target acceleration of the vehicle depending on the actual speed when the vehicle is caused to be stopped automatically, the target acceleration being set so that an absolute value of the target acceleration decreases as the actual speed of the vehicle indicated by the speed detector decreases;

detect an acceleration of a vehicle;

acquire an actual acceleration of the vehicle from the detected acceleration;

determine, based on the actual acceleration and the actual speed, whether or not control of the actual acceleration is to be started, a determination is to start control of the actual acceleration of the vehicle to the target acceleration when an absolute value of the actual speed is made smaller as an absolute value of the actual acceleration becomes smaller; and

control the actual acceleration of the vehicle to the target acceleration instead of to a requested acceleration, when the determination is to start control of the actual acceleration of the vehicle.