Resume speed adaptation for automatic vehicle acceleration at a rate derived from a measured acceleration rate
First Claim
1. A method of changing a speed of a vehicle from an initial speed value to a final speed value, comprising:
- determining a measured acceleration rate of the vehicle while a vehicle speed is below an intermediate speed value and prior to receiving a resume command from an operator to automatically accelerate the vehicle from the intermediate speed value to the final speed value, wherein the intermediate speed value is greater than the initial speed value and less than the final speed value;
calculating a derived acceleration rate from the measured acceleration rate;
receiving the resume command from an operator when the vehicle speed is equal to or greater than the intermediate speed value, wherein the resume command is indicative of an instruction to commence automatically accelerating the vehicle from the intermediate speed value to the final speed value; and
automatically accelerating the vehicle from the intermediate speed value to the final speed value at an acceleration rate based on the derived acceleration rate.
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Accused Products
Abstract
A method and system of accelerating a vehicle from an intermediate speed to a target speed under control of a cruise control or driving speed control unit are disclosed. An acceleration rate of a vehicle is measured while a vehicle speed is below an intermediate speed at which the driving speed control unit is enabled. The intermediate speed is greater than the initial speed and less than the target speed. A derived acceleration rate is calculated using the measured acceleration rate. When the driving speed control unit is enabled, the vehicle is accelerated from the intermediate speed to the final speed at an acceleration rate about equal to the derived acceleration rate. The derived acceleration rate may be the acceleration rate of the vehicle at the intermediate speed, the average acceleration rate between the initial and intermediate speeds, or the average acceleration rate within a threshold of the intermediate speed.
32 Citations
20 Claims
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1. A method of changing a speed of a vehicle from an initial speed value to a final speed value, comprising:
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determining a measured acceleration rate of the vehicle while a vehicle speed is below an intermediate speed value and prior to receiving a resume command from an operator to automatically accelerate the vehicle from the intermediate speed value to the final speed value, wherein the intermediate speed value is greater than the initial speed value and less than the final speed value; calculating a derived acceleration rate from the measured acceleration rate; receiving the resume command from an operator when the vehicle speed is equal to or greater than the intermediate speed value, wherein the resume command is indicative of an instruction to commence automatically accelerating the vehicle from the intermediate speed value to the final speed value; and automatically accelerating the vehicle from the intermediate speed value to the final speed value at an acceleration rate based on the derived acceleration rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cruise control system for a vehicle, comprising:
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a throttle; a vehicle speed sensor; an enable input operative to receive a resume command; and a controller, in communication with the throttle, the vehicle speed sensor and the enable input, operative to; determine a measured acceleration rate of the vehicle while a vehicle speed is below an intermediate speed value and prior to receiving the resume command from an operator to automatically accelerate the vehicle from the intermediate speed value to a final speed value, wherein the intermediate speed value is greater than an initial speed value and less than the final speed value; receive the resume command from an operator to maintain the speed of the vehicle at the final speed value, wherein the resume command is received when the vehicle speed is equal to or greater than the intermediate speed value and wherein the resume command is indicative of an instruction to commence automatically accelerating the vehicle from the intermediate speed value to the final speed value; calculate a derived acceleration rate from the measured acceleration rate; determine that a speed of the vehicle is equal to or greater than the intermediate speed value; and automatically transmit an acceleration signal to the throttle to accelerate the vehicle from the intermediate speed value to the final speed value at an acceleration rate based on the derived acceleration rate. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A vehicle, comprising:
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a prime mover; a transmission operative to couple power from the prime mover to a transmission output at a plurality of different gear ratios; a throttle, operative to control a rotational speed of the prime mover; a vehicle speed sensor; an enable input operative to receive a resume command; and a controller, in communication with the throttle, the vehicle speed sensor and the enable input, operative to; select a gear ratio of the transmission; determine a measured acceleration rate of the vehicle while a vehicle speed is below an intermediate speed value and prior to receiving the resume command from an operator to automatically accelerate the vehicle from the intermediate speed value to a final speed value, wherein the intermediate speed value is greater than an initial speed value and less than the final speed value; receive the resume command from an operator to maintain the speed of the vehicle at the final speed value, wherein the resume command is received when the vehicle speed is equal to or greater than the intermediate speed value and wherein the resume command is indicative of an instruction to commence automatically accelerating the vehicle from the intermediate speed value to the final speed value; calculate a derived acceleration rate from the measured acceleration rate; determine that a speed of the vehicle is equal to or greater than the intermediate speed value; and transmit an acceleration signal to the throttle to accelerate the vehicle from the intermediate speed value to the final speed value at an acceleration rate based on the derived acceleration rate. - View Dependent Claims (19, 20)
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Specification