System and apparatus for controlling speed in excess speed enforcement section
AssigneeHyundai Motor Company
InventorsDae Youn Um, Jee Young Kim, Young M. Han
Life of this patent
Estimating the term…
Abstract
An apparatus and method for controlling a speed in an excess speed enforcement section are provided. The method includes determining one of a target speed, a lower limit speed, and a speed limit as a final target speed using a relationship between a target speed, a lower limit speed, and a speed limit. A required acceleration is calculated based on the final target speed and the vehicle speed and the vehicle speed is adjusted using the required acceleration.
Claims15
An apparatus for controlling a speed in an excess speed enforcement section, the apparatus comprising:
- a memory configured to store program instructions;
- and
- a processor configured to execute the program instructions, the program instructions when executed configured to:
- collect a vehicle speed, excess speed enforcement section information, a speed limit of the excess speed enforcement section, and an average driving speed in the excess speed enforcement section;
- calculate a target speed based on the speed limit and the average driving speed;
- calculate a lower limit speed based on the speed limit
- determine one of the target speed, the lower limit speed, and the speed limit as the final target speed using a relationship between the target speed vt, the lower limit speed vm, and the speed limit vl;
- calculate a required acceleration based on the final target speed and the vehicle speed;
- and
- adjust the vehicle speed using the required acceleration,
- wherein the target speed of the vehicle is calculated using the following Equation 1
- vt=vl+(vl−vd)×α Equation 1
- wherein α represents a first constant, vl is the speed limit, vd is the average driving speed, and vt is the target speed.
A method for controlling a speed in an excess speed enforcement section, the method comprising:
- collecting, by a controller, a vehicle speed, excess speed enforcement section information, a speed limit of the excess speed enforcement section, and an average driving speed in the excess speed enforcement section;
- calculating, by the controller, a target speed based on the speed limit and the average driving speed;
- calculating, by the controller, a lower limit speed based on the speed limit;
- determining, by the controller, one of the target speed, the lower limit speed, and the speed limit as the final target speed using a relationship between the target speed, the lower limit speed, and the speed limit;
- calculating, by the controller, a required acceleration based on the final target speed and the vehicle speed;
- and
- adjusting, by the controller, the vehicle speed using the required acceleration,
- wherein the target speed of the vehicle is calculated using the following Equation 1
- vt=vl+(vl−vd)×α Equation 1
- wherein α represents a first constant, vl is the speed limit, vd is the average driving speed, and vt is the target speed.
A non-transitory computer readable medium containing program instructions executed by a controller, the computer readable medium comprising:
- program instructions that collect a vehicle speed, excess speed enforcement section information, a speed limit of the excess speed enforcement section, and an average driving speed in the excess speed enforcement section;
- program instructions that calculate a target speed based on the speed limit and the average driving speed;
- program instructions that calculate a lower limit speed based on the speed limit;
- program instructions that determine one of the target speed, the lower limit speed, and the speed limit as the final target speed using a relationship between the target speed, the lower limit speed, and the speed limit;
- program instructions that calculate a required acceleration based on the final target speed and the vehicle speed;
- and
- program instructions that adjust the vehicle speed using the required acceleration,
- wherein the target speed of the vehicle is calculated using the following Equation 1
- vt=vl+(vl−vd)×α Equation 1
- wherein α represents a first constant, vl is the speed limit, vd is the average driving speed, and vt is the target speed.
Dependencies are inferred from the claim text.