GAP-BASED SPEED CONTROL FOR AUTOMATED DRIVING SYSTEM

• US 20160288788A1
• Filed: 03/31/2015
• Published: 10/06/2016
• Est. Priority Date: 03/31/2015
• Status: Abandoned Application

• Current Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Nagasaka, Naoki, Okumura, Bunyo
• Application Number:
  US14/674,774
• Publication Number:
  US 20160288788A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B62D 15/025 Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation B62D1/28 takes precedence
• CPC Class Codes: G05D 1/0223 involving speed control of the vehicle vehicle fittings for automatically controlling, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator B60K31/00

Abstract

An automated driving system and methods are disclosed. The automated driving system includes a perception system associated with an autonomous vehicle. Sensors in communication with the perception system can detect an object of interest. Based on information specific to the environment surrounding the autonomous vehicle, the automated driving system can determine a vehicle path proximate to the object of interest. Based on properties of the object of interest, the automated driving system can determine a preferred gap between the vehicle path and the object of interest. The automated driving system can also determine an actual gap between the vehicle path and the object of interest. Based on the difference between the preferred gap and the actual gap, the automated driving system can determine a speed profile for the autonomous vehicle along the vehicle path and control the autonomous vehicle to follow the vehicle path according to the speed profile.

Claims

1. An automated driving system, comprising:

a perception system associated with an autonomous vehicle; and

a computing device in communication with the perception system, comprising;

one or more processors for controlling operations of the computing device; and

a memory for storing data and program instructions used by the one or more processors, wherein the one or more processors are configured to execute instructions stored in the memory to;

detect, using the perception system, an object of interest;

determine, based on information specific to an environment surrounding the autonomous vehicle, a vehicle path proximate to the object of interest;

determine, based on properties of the object of interest, a preferred gap between the vehicle path and the object of interest;

determine an actual gap between the vehicle path and the object of interest;

determine, based on a difference between the preferred gap and the actual gap, a speed profile for the autonomous vehicle along the vehicle path; and

send a command, to one or more vehicle systems, to control the autonomous vehicle to follow the vehicle path using the speed profile.

2. The automated driving system of claim 1, wherein the information specific to the environment surrounding the autonomous vehicle includes road geometry and traffic location and traffic rules.

3. The automated driving system of claim 1, wherein properties of the object of interest include type and size and relative speed in relation to the autonomous vehicle.

4. The automated driving system of claim 3, wherein the object of interest type is one of an obstacle and a pedestrian and a vehicle category.

5. The automated driving system of claim 1, wherein determining the preferred gap is further based on the information specific to the environment surrounding the autonomous vehicle.

6. The automated driving system of claim 1, wherein determining the preferred gap is further based on properties of the autonomous vehicle including autonomous vehicle speed and level of autonomous operation.

7. The automated driving system of claim 6, wherein determining the speed profile is further based on the properties of the object of interest and the properties of the autonomous vehicle.

8. The automated driving system of claim 1, wherein the speed profile includes a reduced speed for the autonomous vehicle proximate to the object of interest when the actual gap is smaller than the preferred gap.

9. A computer-implemented method of automated driving, comprising:

detecting, using a perception system associated with an autonomous vehicle, an object of interest;

determining, based on information specific to an environment surrounding the autonomous vehicle, a vehicle path proximate to the object of interest;

determining, based on properties of the object of interest, a preferred gap between the vehicle path and the object of interest;

determining an actual gap between the vehicle path and the object of interest;

determining, based on a difference between the preferred gap and the actual gap, a speed profile for the autonomous vehicle along the vehicle path; and

sending a command, to one or more vehicle systems, to control the autonomous vehicle to follow the vehicle path according to the speed profile.

10. The method of claim 9, wherein the information specific to the environment surrounding the autonomous vehicle includes road geometry and traffic location and traffic rules.

11. The method of claim 9, wherein properties of the object of interest include type and size and relative speed in relation to the autonomous vehicle and wherein the object of interest type is one of an obstacle and a pedestrian and a vehicle category.

12. The method of claim 9, wherein determining the preferred gap is further based on at least one of the information specific to the environment surrounding the autonomous vehicle and properties of the autonomous vehicle including autonomous vehicle speed and level of autonomous operation.

13. The method of claim 12, wherein determining the speed profile is further based on the properties of the object of interest and the properties of the autonomous vehicle.

14. The method of claim 9, wherein the speed profile includes a reduced speed for the autonomous vehicle proximate to the object of interest when the actual gap is smaller than the preferred gap.

15. A computing device, comprising:

one or more processors for controlling operations of the computing device; and

a memory for storing data and program instructions used by the one or more processors, wherein the one or more processors are configured to execute instructions stored in the memory to;

detect, using a perception system associated with an autonomous vehicle, an object of interest;

determine, based on information specific to an environment surrounding the autonomous vehicle, a vehicle path proximate to the object of interest;

determine, based on properties of the object of interest, a preferred gap between the vehicle path and the object of interest;

determine an actual gap between the vehicle path and the object of interest;

determine, based on a difference between the preferred gap and the actual gap, a speed profile for the autonomous vehicle along the vehicle path; and

send a command, to one or more vehicle systems, to control the autonomous vehicle to follow the vehicle path using the speed profile.

16. The computing device of claim 15, wherein the information specific to the environment surrounding the autonomous vehicle includes road geometry and traffic location and traffic rules.

17. The computing device of claim 15, wherein properties of the object of interest include type and size and relative speed in relation to the autonomous vehicle and wherein the object of interest type is one of an obstacle and a pedestrian and a vehicle category.

18. The computing device of claim 15, wherein determining the preferred gap is further based on at least one of the information specific to the environment surrounding the autonomous vehicle and properties of the autonomous vehicle including autonomous vehicle speed and level of autonomous operation.

19. The computing device of claim 18, wherein determining the speed profile is further based on the properties of the object of interest and the properties of the autonomous vehicle.

20. The computing device of claim 15, wherein the speed profile includes a reduced speed for the autonomous vehicle proximate to the object of interest when the actual gap is smaller than the preferred gap.