Back to results
US 10,293,820 B2Granted
Vehicle speed control system and method
AssigneeJaguar Land Rover Limited
InventorsAndrew Fairgrieve, James Kelly, Simon Gilling, Daniel Woolliscroft
Life of this patent
Estimating the term…
Abstract
A vehicle control system having a plurality of speed control systems, each operable to cause the vehicle to operate in accordance with a respective target speed. The system is operable wherein one of the plurality of speed control systems may be selected to control vehicle speed at a given moment in time, wherein when responsibility for speed control is transferred from a first one of the plurality of speed control systems to a second one of the speed control systems, the second one of the speed control systems is operable to set a value of target speed thereof to a value corresponding to that of the target speed of the first.
Claims20
A vehicle control system comprising a vehicle control unit and a plurality of automatic speed control systems each operable to cause the vehicle to operate in accordance with a respective target speed,
- wherein the vehicle control unit is configured to select a first one of the plurality of automatic speed control systems in response to a user request from a user input interface,
- wherein when the vehicle control unit receives a request from the user input interface to transfer responsibility for speed control from the currently-selected first one of the plurality of automatic speed control systems to a second one of the automatic speed control systems, the vehicle control system is configured to:
- receive an electrical signal indicative of a current value of vehicle speed from a vehicle speed sensor;
- determine whether the current value of vehicle speed is within an allowable range for operation of the second one of the automatic speed control systems;
- and
- when it is determined that the current value of vehicle speed is within the allowable range, select the second one of the automatic speed control systems and set a value of target speed of the second one of the automatic speed control systems, and
- wherein the vehicle control unit is configured to set the value of the target speed of the second one of the automatic speed control systems by:
- determining if an instant value of the target speed of the first one of the automatic speed control systems is within an allowable range for a target speed of the second one of the automatic speed control systems;
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is within the allowable range, setting the target speed of the second one of the automatic speed control systems to the target speed of the first one of the automatic speed control systems;
- and
- when it is determined that the instant target speed of the first one of the automatic speed control systems is outside the allowable range, setting the target speed of the second one of the automatic speed control systems to the closest allowable value within the allowable range to the instant value of the target speed of the first one of the automatic speed control systems.
8 more elements
A method of controlling a vehicle comprising:
- selecting, by a vehicle control unit, a first one of a plurality of automatic speed control systems in response to a user request received from a user input interface;
- receiving, by the vehicle control unit and from the user input interface, a request to transfer responsibility for speed control of the vehicle from the currently-selected first one of the plurality of automatic speed control systems to a second one of the plurality of automatic speed control systems;
- receiving, from a vehicle speed sensor, an electrical signal indicative of a current value of vehicle speed;
- determining whether the current value of vehicle speed is within an allowable range for operation of the second one of the automatic speed control systems;
- and
- when it is determined that the current value of vehicle speed is within the allowable range, selecting the second one of the automatic speed control systems and setting a value of target speed of the second one of the automatic speed control systems by:
- determining if an instant value of the target speed of the first one of the automatic speed control systems is within an allowable range for a target speed of the second one of the automatic speed control systems;
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is within the allowable range, setting the target speed of the second one of the automatic speed control systems to the target speed of the first one of the automatic speed control systems;
- and
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is outside the allowable range, setting the target speed of the second one of the automatic speed control systems to the closest allowable value within the allowable range to the instant value of the target speed of the first one of the automatic speed control systems.
7 more elements
A vehicle control system comprising a vehicle control unit and plurality of automatic speed control systems each operable to cause the vehicle to operate in accordance with a respective target speed,
- wherein the vehicle control unit is configured to select a first one of the plurality of automatic speed control systems in response to a user request received from a user input interface;
- wherein when the vehicle control unit receives a request from the user input interface to transfer responsibility for speed control from the first one of the automatic speed control systems to a second one of the automatic speed control systems, the vehicle control unit is configured to select the second one of the automatic speed control systems and set a value of target speed of the second one of the automatic speed control systems, and the second one of the automatic speed control systems assumes responsibility for controlling vehicle speed from the first one of the automatic speed control systems,
- and further wherein the vehicle control unit is configured to set the target speed of the second one of the automatic speed control systems by:
- determining if an instant value of the target speed of the first one of the automatic speed control systems is within an allowable range for a target speed of the second one of the automatic speed control systems;
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is within the allowable range, setting the target speed of the second one of the automatic speed control systems to the target speed of the first one of the automatic speed control systems;
- and
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is outside the allowable range, setting the target speed of the second one of the automatic speed control systems to the closest allowable value within the allowable range to the instant value of the target speed of the first one of the automatic speed control systems.
4 more elements
A method of controlling a vehicle comprising:
- selecting, by a vehicle control unit, a first one of a plurality of automatic speed control systems in response to a user request received from a user input interface;
- controlling a speed of a vehicle by means of the first one of a plurality of automatic speed control systems;
- and
- transferring, by the vehicle control unit, responsibility from the first one of the automatic speed control systems to a second one of the automatic speed control systems,
- the method comprising setting a value of target speed of the second one of the automatic speed control systems when responsibility for speed control is transferred from the first one of the automatic speed control systems to the second one of the automatic speed control systems by:
- determining if an instant value of the target speed of the first one of the automatic speed control systems is within an allowable range for a target speed of the second one of the automatic speed control systems;
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is within the allowable range, setting the target speed of the second one of the automatic speed control systems to the target speed of the first one of the automatic speed control systems;
- and
- when it is determined that the instant value of the target speed of the first one of the automatic speed control systems is outside the allowable range, setting the target speed of the second one of the automatic speed control systems to the closest allowable value within the allowable range to the instant value of the target speed of the first one of the automatic speed control systems.
6 more elements
Dependencies are inferred from the claim text.