Brake Function Based On Controlling According To Acceleration

• US 20070203633A1
• Filed: 04/15/2005
• Published: 08/30/2007
• Est. Priority Date: 04/15/2004
• Status: Active Grant

• Current Assignee: Oddvard Johnsen
• Original Assignee: Oddvard Johnsen
• Inventors: Johnsen, Oddvard
• Granted Patent: US 7,941,261 B2
• Time in Patent Office: Days
• US Class Current: 701/70
• CPC Class Codes: B60T 8/1703 for aircrafts
• CPC Class Codes: B64C 25/426 Braking devices providing an automatic sequence of braking

Abstract

A brake controller function to optimally brake a wheel of a vehicle in motion, such as an aircraft. The brake pressure control self regulates by means of applying brake pressure in accordance with vehicle acceleration information and the change in acceleration over time in the horizontal plane. Vehicle acceleration and information about its change enable a brake pressure control function to determine the brake pressure associated with maximum obtainable retardation for a vehicle at that given point in time. By continuously monitoring acceleration change and detecting retardation pinnacles, the culmination and turning points of retardation, with their associated brake pressure, maximum braking ability is assured at any given time. By applying acceleration data in real time as a controls reference in a brake logic control function to increase or reduce brake pressure, such a brake control function will assure a brake pressure perfectly fit with net of all the forces that a vehicle is subjected to. It will ensure optimal brake level with respect the vehicle tire/pavement surface interface.

Claims

1. A brake control system for a wheel of a vehicle in motion comprising:

(a) a registration unit for longitudinal acceleration;

(b) registration unit for brake pressure to wheel brake;

(c) a computation function which continuously compare changes in acceleration and transmits signals to a pressure regulator for brake pressure; and

(d) a pressure regulator designed to increase or reduce brake pressure to wheel brake.

4. System of claim 1 characterized by that the vehicle is an aircraft.

5. System of claim 1 characterized by being an automatic brake.

6. System of claim 1 characterized by being a manual/pedal brake.

2. A method of controlling the brake pressure controller for a wheel of a vehicle in motion which changes brake pressure in accordance to change in longitudinal acceleration over time characterized by:

(a) brake pressure to wheel brake is set off and increased evenly;

(b) longitudinal acceleration is compared from one time frame to the next;

(c) when the acceleration negative value in one time frame to the next increases, brake pressure is increased;

(d) when acceleration negative value in one time frame to the next decreases brake pressure is reduced;

then;

(e) functions “

b”

, “

c” and

“

d”

are reiterated continuously until vehicle has come to a stop.

3. The method of claim 2, characterized by that acceleration information used is computed as a vector equal the hypotenuse in a right-angled triangle where longitudinal and lateral acceleration are right-angle sides.

7. The method of claim 2 characterized by that the vehicle is an aircraft.

8. The method of claim 2 characterized by being an automatic brake.

9. The method of claim 2 characterized by being a manual/pedal brake.