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US 10,300,897 B2Granted
Brake load balance and runway centering techniques
AssigneeGoodrich Corporation
InventorsMarc Georgin, Efrem E. Ayichew
Life of this patent
Estimating the term…
Abstract
A method for controlling brakes may comprise receiving, by a controller, a yaw rate from an inertial sensor, calculating, by the controller, a force correction, calculating, by the controller, a pressure correction, and adjusting, by the controller, a pressure command for a brake control device.
Claims14
A brake control system, comprising:
- an inertial sensor coupled to an aircraft configured to measure a yaw acceleration of the aircraft;
- a brake control unit (BCU) configured to receive the yaw acceleration from the inertial sensor, and control a brake control device based on the yaw acceleration,
- wherein the BCU is configured to calculate a brake pressure correction using the yaw acceleration and equation
- Δ
-
-
- P
-
-
- _
-
-
- j
- =
- ±
- Δ
-
-
- F
- d
-
-
- _
-
-
- x
- *
- R
- rolling
- x
- -
- I
- wh
-
-
- _
-
-
- x
- *
- ω
- .
- m
-
-
- a
-
-
- x
- /
- m
-
-
- i
-
-
- n
- A
- ·
- k
- ·
- n
- ·
- R
- b
- ·
- μ
- cc
- wherein ΔP_j is a brake pressure correction, ΔFd_x is a brake force correction, Rrollingx is a rolling radius of a wheel, Iwh_x is a rotational moment of inertia of the wheel, {dot over (ω)}max/min is one of the maximum allowable deceleration of the wheel and a minimum allowable deceleration of the wheel, A is a piston area, k is a number of friction disks, n is a number of brake stacks, Rb is a brake force torque arm, and μcc is a friction coefficient of the friction disks.
66 more elements
A method for controlling brakes, comprising:
- receiving, by a brake control unit (BCU), a yaw acceleration from an inertial sensor;
- and
- adjusting, by the BCU, a brake command for a brake control device based upon the yaw acceleration;
- and
- calculating, by the BCU, a brake force correction based upon the yaw acceleration,
- wherein the yaw acceleration is a yaw acceleration of an aircraft, and
- the brake force correction is calculated using at least one of equation
- Δ
-
-
- F
- d
-
-
- _
-
-
- x
- =
- I
- L
- *
- β
- ¨
- 1
- L
- LG
- and equation
- Δ
-
-
- F
- d
-
-
- _
-
-
- x
- =
- I
- L
- *
- β
- ¨
- 1
- L
- LG
- *
- 1
- 2
- ,
- where {umlaut over (β)}l is the yaw acceleration, IL is a moment of inertia of an aircraft, LLG is a distance between a landing gear and an aircraft center of gravity, and ΔFd_x is the brake force correction.
50 more elements
A method for controlling brakes, comprising:
- receiving, by a brake control unit (BCU), a yaw acceleration from an inertial sensor;
- and
- adjusting, by the BCU, a brake command for a brake control device based upon the yaw acceleration;
- and
- calculating, by the BCU, a brake force correction based upon the yaw acceleration,
- wherein the yaw acceleration is a yaw acceleration of an aircraft, and
- the brake force correction is calculated using at least one of equation
- Δ
-
-
- F
- d_x
- =
- I
- L
- *
- β
- ¨
- 1
- L
- LG
- and equation
- Δ
-
-
- F
- d_x
- =
- -
- I
- L
- *
- β
- ¨
- 1
- L
- LG
- *
- 1
- 2
- ,
- where {umlaut over (β)}l is the yaw acceleration, IL is a moment of inertia of an aircraft, LLG is a distance between a landing gear and an aircraft center of gravity, and ΔFd_x is the brake force correction.
39 more elements
Dependencies are inferred from the claim text.