METHOD AND SYSTEM FOR DETERMINING THE VELOCITY OF AN AUTOMOBILE
First Claim
Patent Images
1. A method for determining a velocity of a vehicle comprising:
- calculating an initial estimation of the velocity of the vehicle based on rates of rotation of a plurality of wheels on the vehicles; and
modifying the initial estimation based on an acceleration of the vehicle to generate a modified estimation of the velocity of the vehicle if any of the wheels on the vehicle are in a brake control situation.
12 Assignments
0 Petitions
Accused Products
Abstract
A method and system, according to one embodiment of the present invention, provide a means to accurately determine the velocity of a vehicle. An initial estimation of the velocity of the vehicle is calculated based on rates of rotation of a plurality of wheels on the vehicles. If any of the wheels on the vehicle are in a brake control, or traction control, situation, the initial estimation is modified based on an acceleration of the vehicle to generate a modified estimation of the velocity of the vehicle.
22 Citations
15 Claims
-
1. A method for determining a velocity of a vehicle comprising:
-
calculating an initial estimation of the velocity of the vehicle based on rates of rotation of a plurality of wheels on the vehicles; and modifying the initial estimation based on an acceleration of the vehicle to generate a modified estimation of the velocity of the vehicle if any of the wheels on the vehicle are in a brake control situation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for determining a velocity of an automobile comprising:
-
detecting a rate of rotation for each of a plurality of wheels on the automobile with a plurality of wheels speed sensors on the automobile; calculating an initial estimation of the velocity of the automobile based on the detected rates of rotation for the plurality of wheels; calculating a rotational acceleration for each wheel on the automobile; detecting an acceleration of the automobile with an accelerometer on the automobile; comparing the rotational acceleration for each wheel on the automobile with the acceleration of the automobile detected by the accelerometer; and modifying the initial estimation of the velocity of the automobile based on said comparison of the rotational acceleration for each wheel with the acceleration detected by the accelerometer to generate a modified estimation of the velocity of the automobile if any of the wheels on the automobile are experiencing at least one of anti-lock braking (ABS) and traction control system (TCS) activity.
-
-
9. An automobile comprising:
-
a frame; a plurality of wheels coupled to the frame; at least one wheel speed sensor coupled to the frame to detect a rate of rotation for each of the plurality of wheels; an accelerometer coupled to the frame to detect an acceleration of the vehicle; and a processor coupled to the frame and in operable communication with the at least one wheel speed sensor and the accelerometer, the processor being configured to; calculate an initial estimation of the velocity of the vehicle based on the rates of rotation of the plurality of wheels detected by the at least one wheel speed sensor; and modify the initial estimation based on the acceleration of the vehicle detected by the accelerometer to generate a modified estimation of the velocity of the vehicle if any of the wheels on the vehicle are in a brake control situation. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
Specification