VEHICLE CONTROL APPARATUS

• US 20160114800A1
• Filed: 03/14/2014
• Published: 04/28/2016
• Est. Priority Date: 05/31/2013
• Status: Abandoned Application

• Current Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Inventors: SHIMIZU, Ryosuke
• Application Number:
  US14/894,141
• Publication Number:
  US 20160114800A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60W 2552/30 Road curve radius
• CPC Class Codes: B60W 2554/00 Input parameters relating to objects
• CPC Class Codes: B60W 2554/4029 Pedestrians
• CPC Class Codes: B60W 2554/80 Spatial relation or speed relative to objects
• CPC Class Codes: B60W 2720/103 Speed profile
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/0956 the prediction being responsive to traffic or environmental parameters
• CPC Class Codes: B60W 30/14 Adaptive cruise control
• 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 30/18027 Drive off, accelerating from standstill
• CPC Class Codes: B60W 30/18145 Cornering
• CPC Class Codes: B60W 30/18154 Approaching an intersection
• CPC Class Codes: B60W 30/18159 Traversing an intersection
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

When own vehicle starts and accelerates involving course-change, the own vehicle is started with appropriate timing, and changes a course safely and swiftly. The vehicle control apparatus (1) includes externality recognizing means (2) that recognizes a moving body (C1, P1) and a road shape around the own vehicle (100), and that calculates a position, a moving direction and moving speed of the moving body, estimating means (6) for specifying an intersection position (Xc1 and Xp1) between an expected course (r) of the own vehicle and an expected course (Rc1, Rp1) of the moving body, acceleration pattern producing means (7) for producing a plurality of acceleration patterns (f(t), F(t), f(t+Ts), F(t+Ts)), acceleration pattern selecting/setting means (8) for selecting and setting one of the plurality of acceleration patterns in which the own vehicle and the moving body do not pass the intersection position at the same time, and vehicle driving means (9) for starting and accelerating the own vehicle based on the selected and set acceleration pattern.

Claims

1. A vehicle control apparatus for controlling start and acceleration involving course-change of own vehicle, comprising:

an externality recognizing means that recognizes a moving body and a road shape around the own vehicle, and that calculates a position, a moving direction and moving speed of the moving body,

estimating means that specifies an intersection position between an expected course of the own vehicle and an expected course of the moving body by estimating a course of the own vehicle based on the road shape, and by estimating a course of the moving body based on the position and the moving direction of the moving body, and

vehicle driving means that starts and accelerates the own vehicle based on an acceleration pattern as an acceleration waveform when the own vehicle starts.

2. The vehicle control apparatus according to claim 1, further comprising:

acceleration pattern producing means that produces a plurality of acceleration patterns as acceleration waveforms when the own vehicle starts,

acceleration pattern selecting/setting means that selects and sets one of the plurality of acceleration patterns in which the own vehicle and the moving body do not pass the intersection position at the same time based on the expected course of the own vehicle and the expected course and the moving speed of the moving body, and

vehicle driving means that starts and accelerates the own vehicle based on the selected and set acceleration pattern.

3. The vehicle control apparatus according to claim 2, wherein when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means calculates arrival time required until the moving body arrives at the intersection position, and passing time required until the moving body passes the intersection position based on the expected course and the moving speed of the moving body.

4. The vehicle control apparatus according to claim 3, wherein when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means calculates arrival time required until the own vehicle arrives at the intersection position, and passing time required until the own vehicle passes the intersection position based on the expected course of the own vehicle and one acceleration pattern selected from the plurality of acceleration patterns.

5. The vehicle control apparatus according to claim 4, wherein when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means selects and sets the one acceleration pattern when the arrival time of the own vehicle is equal to or greater than the passing time of the moving body, or when the arrival time of the moving body is equal to or greater than the passing time of the own vehicle.

6. The vehicle control apparatus according to claim 4, wherein when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means calculates delay time which is a difference between the passing time of the moving body and the arrival time of the own vehicle when the arrival time of the own vehicle is faster than the passing time of the moving body and when the arrival time of the moving body is faster than the passing time of the own vehicle, and the acceleration pattern selecting/setting means selects and sets the acceleration pattern which is delayed by the delay time.

7. The vehicle control apparatus according to claim 4, wherein when the plurality of acceleration patterns are produced, the acceleration pattern selecting/setting means produces a strong acceleration pattern having acceleration greater than that of the one acceleration pattern, and when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means calculates shortened arrival time required until the own vehicle arrives at the intersection position and shortened passing time required until the own vehicle passes the intersection position based on the expected course of the own vehicle and the strong acceleration pattern.

8. The vehicle control apparatus according to claim 5, wherein when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means selects and sets the strong acceleration pattern when the arrival time of the own vehicle is faster than the passing time of the moving body and the arrival time of the moving body is faster than the passing time of the own vehicle, and when the shortened arrival time of the own vehicle is equal to or greater than the passing time of the moving body or the arrival time of the moving body is equal to or greater than the shortened passing time of the own vehicle.

9. The vehicle control apparatus according to claim 8, wherein when the acceleration pattern is selected and set, the acceleration pattern selecting/setting means calculates delay time which is a difference between the passing time of the moving body and the shortened arrival time of the own vehicle, and selects and sets a strong acceleration pattern which is obtained by delaying the former strong acceleration pattern by the delay time when the shortened arrival time of the own vehicle is faster than the passing time of the moving body and the arrival time of the moving body is faster than the shortened passing time of the own vehicle.

10. The vehicle control apparatus according to claim 1, further comprising permitting means that permits operation by a driver of the own vehicle, and for permitting control to start and accelerate the own vehicle based on the permitting operation.

11. The vehicle control apparatus according to claim 1, further comprising stop-determining means that detects speed of the own vehicle and carrying out stop-determination of the own vehicle, and for permitting control to start and accelerate the own vehicle based on the stop-determination.

12. The vehicle control apparatus according to claim 1, wherein the externality recognizing means calculates a position of the moving body based on an image of a stereo camera provided in the own vehicle, and calculates the moving direction and the moving speed of the moving body based on time-variation of the position of the moving body.

13. The vehicle control apparatus according to claim 12, wherein the externality recognizing means recognizes the road shape based on an image of the stereo camera.