Methods and system for time of arrival control using time of arrival uncertainty
First Claim
1. A vehicle control system comprising:
- an input device configured to receive a required time of arrival at a waypoint;
a processor communicatively coupled to said input device, said processor programmed to;
determine a forward late time profile representing the latest time the vehicle could arrive at a point along the track while transiting at a minimum available speed;
determine a forward early time profile representing the earliest time the vehicle could arrive at a point along the track and still arrive at the waypoint while transiting at a maximum available speed;
determine at least one of an acceleration and a deceleration between the minimum available speed and the maximum available speed;
determine an estimated time uncertainty (ETU) associated with at least one of the forward late time profile, forward early time profile and a reference time profile; and
an output device communicatively coupled to the processor, said output device configured to transmit the determined uncertainty with a respective one of the at least one of the forward late time profile, forward early time profile and the reference time profile to at least one of another system for further processing and a display.
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Accused Products
Abstract
Methods and a system for vehicle control are provided. The system includes an input device configured to receive a required time of arrival at a waypoint and a processor communicatively coupled to the input device. The processor is programmed to determine a forward late time profile, determine a forward early time profile representing the earliest time the vehicle could arrive at a point along the track and still arrive at the waypoint while transiting at a maximum available speed, and determine an estimated time uncertainty (ETU) associated with at least one of the forward late time profile and the forward early time profile. The system also includes an output device communicatively coupled to the processor, the output device configured to transmit the determined uncertainty with a respective one of the at least one of the forward late time profile and the forward early time profile to a display.
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Citations
20 Claims
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1. A vehicle control system comprising:
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an input device configured to receive a required time of arrival at a waypoint; a processor communicatively coupled to said input device, said processor programmed to; determine a forward late time profile representing the latest time the vehicle could arrive at a point along the track while transiting at a minimum available speed; determine a forward early time profile representing the earliest time the vehicle could arrive at a point along the track and still arrive at the waypoint while transiting at a maximum available speed; determine at least one of an acceleration and a deceleration between the minimum available speed and the maximum available speed; determine an estimated time uncertainty (ETU) associated with at least one of the forward late time profile, forward early time profile and a reference time profile; and an output device communicatively coupled to the processor, said output device configured to transmit the determined uncertainty with a respective one of the at least one of the forward late time profile, forward early time profile and the reference time profile to at least one of another system for further processing and a display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14)
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8. A method of controlling a speed of a vehicle along a track, said method comprising:
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receiving a required time of arrival (RTA) at a predetermined waypoint; determining a forward late time profile representing the latest time the vehicle could arrive at a point along the track and still arrive at the predetermine waypoint at the RTA while transiting at a minimum available speed; determining a forward early time profile representing the earliest time the vehicle could arrive at a point along the track and still arrive at the predetermine waypoint at the RTA while transiting at a maximum available speed; determining at least one of an acceleration and a deceleration between the minimum available speed and the maximum available speed; determining an estimated time uncertainty (ETU) associated with at least one of the forward late time profile and the forward early time profile; and outputting the determined uncertainty with a respective one of the at least one of the forward late time profile and the forward early time profile.
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15. A method of controlling a speed of a vehicle, said method comprising:
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receiving a required time of arrival of the vehicle at a waypoint; determining a forward late time profile representing the latest time the vehicle could arrive at a point along the track and still arrive at the predetermined waypoint while transiting at a maximum available speed; determining a forward early time profile representing the earliest time the vehicle could arrive at a point along the track and still arrive at the predetermined waypoint while transiting at a minimum available speed; determining a backward early time profile using a maximum speed profile backward from the RTA time wherein the maximum speed profile is determined for the vehicle while transiting at a maximum available speed; determining a backward late time profile using a minimum speed profile backward from the RTA time, wherein the minimum speed profile is determined for the vehicle while transiting at a minimum available speed; determining at least one of an acceleration and a deceleration between the minimum available speed and the maximum available speed; determining an estimated time uncertainty (ETU) associated with at least one of the forward late time profile, the forward early time profile, the backward early time profile and the backward late time profile; and controlling a speed of the vehicle using at least one of the forward late time profile, the forward early time profile, the backward early time profile the backward late time profile, and a respective determined uncertainty. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification