Method and apparatus for maintaining a preset velocity of a vehicle
AssigneeRobert Bosch GmbH
InventorsHans-Reimer Speck, Christian Weber, Thomas Huber
Life of this patent
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Abstract
An adjusting element for maintaining the specified velocity is actuated in such a way that the acceleration of the vehicle is adjusted to predefined values dependent on the velocity.
Claims10
Method for maintaining a velocity of a vehicle at a specified velocity, said vehicle comprising a drive system supplying power for moving the vehicle, said method comprising:
- providing an operating element usable by a driver to actuate an adjusting element, which influences the power of the drive system of the vehicle;
- actuating the adjusting element under operating conditions so as to maintain the specified velocity independently of the driver;
- actuating the adjusting element so as to control acceleration of the vehicle to match a specified acceleration value which is derived as a function of the vehicle velocity;
- and
- wherein the adjusting element is automatically actuated to control acceleration for a first acceleration beginning at a first velocity, and for a second acceleration with a smaller absolute value than the first acceleration beginning at a second velocity, the absolute value of the difference between the first velocity and the specified velocity being greater than the absolute value of the difference between the second velocity and the specified velocity.
Apparatus for maintaining a velocity of a vehicle at a specified velocity, said vehicle having a drive system delivery power for moving the vehicle, said apparatus comprising:
- an adjusting element which influences the power of the drive system of the vehicle;
- an operating element actuating said adjusting element responsive to operation of the operating element by a driver;
- an automatic acceleration controller actuating the adjusting element so as to control acceleration of the vehicle to match a specified acceleration value and to maintain the specified velocity, said specified acceleration value being predetermined as a function of the vehicle velocity;
- and p1 the automatic acceleration controller actuating the adjusting element for a first acceleration beginning at a first velocity, and for a second acceleration with a smaller absolute value than the first acceleration beginning at a second velocity, the absolute value of the difference between the first velocity and the specified velocity being greater than the absolute value of the difference between the second velocity and the specified velocity.
Method for maintaining a vehicle at a desired velocity, said vehicle comprising a drive system which generates horsepower and an adjusting element which influences the horsepower of the drive system, said adjusting element, under operating conditions, being actuated so as to maintain the desired velocity independently of the driver, said method comprising:
- specifying a desired vehicle velocity,
- determining an actual vehicle velocity,
- determining a desired acceleration value as a function of said actual vehicle velocity,
- determining an actual vehicle acceleration as a function of said actual vehicle velocity, and
- actuating the adjusting element so that the actual vehicle acceleration matches the desired vehicle acceleration, the actuation of said adjusting element beginning when said actual vehicle acceleration is greater than or equal to said desired acceleration.
Dependencies are inferred from the claim text.