EP3941825A1 - Procede de controle du freinage des roues d'un avion et controleur de freinage de roues associe - Google Patents
Procede de controle du freinage des roues d'un avion et controleur de freinage de roues associeInfo
- Publication number
- EP3941825A1 EP3941825A1 EP20726197.5A EP20726197A EP3941825A1 EP 3941825 A1 EP3941825 A1 EP 3941825A1 EP 20726197 A EP20726197 A EP 20726197A EP 3941825 A1 EP3941825 A1 EP 3941825A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deployment
- wheels
- controller
- aircraft
- thrust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
- B60T8/1703—Braking or traction control means specially adapted for particular types of vehicles for aircrafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface wheeled type, e.g. multi-wheeled bogies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/42—Arrangement or adaptation of brakes
- B64C25/426—Braking devices providing an automatic sequence of braking
Definitions
- the invention relates to the field of aircraft braking and relates more particularly to an improved method of aircraft braking.
- the braking system comprising the brakes of wheels 10
- the thrust reverser system comprising the thrust reversers 12.
- the wheel brakes 10 are controlled from a wheel braking controller 14 which receives a request for deceleration regulation 16 from the cockpit 18 and issues an order deceleration regulation 20 for the wheel brakes 10.
- the thrust reversers 12 are for their part controlled from a thrust reverser controller 22 which receives a request for deployment of the thrust reversers 24 from the cockpit 18 from where from the actions of the pilot 26 and issues an order to deploy the thrust reversers 28 for the thrust reversers 12.
- the wheel braking system included in the landing gear of the aircraft is able on its own to ensure the braking function of the aircraft. Indeed, the certification of the braking distances only applies to the wheel braking system which is the only system taken into account to determine whether an airplane can land on such or such a runway. However, in order to facilitate this certification, the thrust reverser system included in the aircraft's turbojets is very often seen as an option used to reduce wear on the brake system of aircraft. wheels and all the more so since these two systems are developed completely independently because each one affects very different aircraft subsystems (landing gear and turbojet engines).
- One of the main functions of the wheel braking system is to provide deceleration regulation (“autobrake” function) allowing the airplane to decelerate homogeneously (smoothly) and adapted to the runway and the terrain. output (“brake to vacate” function).
- FIG. 7 illustrates a conventional case of controlled landing, for example at a constant deceleration level with deployment of the thrust reversers during braking.
- the object of the present invention is to propose an alternative solution making it possible to ensure a more regular deceleration of the airplane.
- One aim is to offer more degrees of freedom in the design of the wheel braking system and in particular to relax the adjustment compromise of the aforementioned corrector.
- the request for deployment of the thrust reversers is received either directly by the wheel braking controller from an aircraft cockpit, or directly by the wheel braking controller and relayed to a reverser controller.
- thrust reverser actuating the deployment of the thrust reversers, or either directly by a thrust reverser controller which relays it to the wheel braking controller.
- a deceleration regulation order delivered by the brake controller from the wheels to the wheel brakes is kept substantially constant either by an adaptation of a deceleration setpoint in proportion to the disturbance created by the deployment of the thrust reversers or by an adaptation of a gain of a transfer function of the wheel braking regulation loop in proportion to the disturbance created by the deployment of the thrust reversers.
- the invention also relates to a wheel brake controller capable of actuating the wheel brakes of an aircraft as a function of a demand for deceleration regulation, characterized in that it is configured to actuate the brakes of the wheels of the aircraft. aircraft also according to a request for deployment of thrust reversers.
- this controller is further configured to receive from a thrust reverser controller information on the actual state of the thrust reversers.
- FIG. 1 shows a simplified architecture of the wheel braking and thrust reversal systems according to a first embodiment of the invention
- FIG. 2 shows a simplified architecture of the wheel braking and thrust reversal systems according to a second embodiment of the invention
- FIG. 3 shows a simplified architecture of the wheel braking and thrust reversal systems according to a third embodiment of the invention
- FIG. 4 details the structure of the wheel braking controller of the invention
- FIG. 5 illustrates the deceleration curve obtained with the wheel braking controller of FIG. 4,
- FIG. 6 shows wheel braking and thrust reversal systems according to a conventional simplified architecture of the prior art
- FIG. 7 Figure 7 illustrates the deceleration curve of the wheel braking system of Figure 6.
- FIGS. 1 to 3 Three embodiments of the invention illustrated successively in FIGS. 1 to 3 are envisaged to provide this information to the wheel braking controller.
- the deceleration profile is however not optimal because the wheel braking controller cannot control the moment when the thrust reversers will deploy and it therefore does not know their real state. He can only react in relation to the deployment request made by the pilot and estimate that the deployment is actually taking place. Consequently, there is a risk of taking into account the order of deployment of the inverters when they are not deployed, causing a transient very harmful to comfort and braking performance (with an effective deceleration lower than the one ordered). This risk can however be eliminated by providing for the receipt of information 30 from the thrust reverser controller on this real state of the reversers allowing it to verify that the reversers are properly deployed.
- this architecture allows very simply, in a degraded mode in which the deployment request is not taken into account, a return to the conventional architecture where the braking of the wheels and the deployment of the thrust reversers are managed independently. 'from each other.
- the thrust reverser controller 22 relay the request for deployment of the thrust reversers 24 received directly from the cockpit 18 to the wheel brake controller 14.
- the deceleration profile is not optimal either because the wheel braking controller cannot control the moment when the thrust reversers are going to deploy and it therefore does not know their real state. It can only react in relation to the deployment request received from the thrust reverser controller and estimate that the deployment is actually taking place. Consequently, there is a risk of taking into account the order of deployment of the reversers when the latter are not deployed, causing a transient which is very detrimental to comfort and to braking performance. However, as previously, this risk can be eliminated by providing for the receipt of information 30 from the thrust reverser controller on this actual state of the reversers allowing it to verify that the reversers are indeed deployed.
- This architecture also allows very simply a return to the classic architecture where the braking of the wheels and the deployment of the thrust reversers are managed independently of one another by choosing in a degraded mode not to take into account the demand for deployment and the possible state of the inverters.
- the deceleration regulation request 16 and the request for deployment of the thrust reversers 24 are both addressed to the wheel braking controller 14 which can then choose to relay the request for deployment of the reversers. thrust to the thrust reverser controller 22 for example only when it is ready to take its effect into account. Once this request has been relayed to the thrust reverser controller 22, the latter can confirm proper reception to the wheel braking controller and send it information 30 on the actual state of the thrust reversers: reverser not deployed, in deployment , deployed.
- This master (for the brakes) slave (for the inverters) type operation makes it possible to optimize the deceleration of the aircraft as much as possible because the deceleration regulation algorithm can be perfectly adapted from the real state of the inverters. It is also possible to recreate (by an inverse model which returns by example the instantaneous or predicted deceleration delta with a certain advance to the wheel braking controller) the deceleration induced by the thrust reversers and integrate it directly into the deceleration regulation in order to be able to easily reject the disturbance due to the deployment thrust reversers. This can be done in the thrust reverser controller or in the wheel brake controller subject to sharing of model data necessary for regulation.
- FIG. 4 illustrates an exemplary embodiment of the wheel braking controller 14 which delivers the deceleration regulation order 20 for the wheel brakes 10 from the deceleration regulation request 16.
- This controller comprises a corrector 32 which acts. as is known on a regulation deviation between a setpoint 34 and a measured value of this deceleration 21.
- this setpoint is not a nominal deceleration setpoint 36 but a suitable deceleration setpoint delivered by an adaptation module of the setpoint 38 which receives the request for deployment of the thrust reversers 24 and possibly the information 30 on the actual state of these thrust reversers 12.
- This module 38 therefore makes it possible to switch from the nominal deceleration setpoint to the adapted deceleration setpoint .
- the wheel braking controller can thus directly modify its deceleration setpoint in line with the request for deployment of the thrust reversers so that the braking effect of the reversers and the wheel braking setpoint coincide with the value requested in the cockpit. from the plane.
- FIG. 5 presents the ideal case in which the adapted deceleration setpoint 34 decreases instantly from that we know at an instant Tl that the reversers move (request for deployment of the thrust reversers 24 received). Then this setpoint changes in a manner exactly opposite to the effect of deceleration produced by the thrust reversers (the hatched area 40 corresponds to the compensation for the aerodynamic effect of the reversers).
- the objective is obviously to have a constant deceleration corresponding to the requested value by the pilot.
- the deceleration setpoint returns to the constant value of the nominal setpoint 36 so as not to accelerate too much and have a minimum of oscillations during the transients.
- adaptation can have the same result as the aforementioned setpoint adaptation.
- an adaptation of the gain of the transfer function of the closed loop system is also possible.
- the gains of the regulation loop are modified at the time of the events defined by the request for deployment of the thrust reversers and the state of these thrust reversers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1902924A FR3093993B1 (fr) | 2019-03-21 | 2019-03-21 | Procédé de contrôle du freinage des roues d’un avion et contrôleur de freinage de roues associé |
PCT/FR2020/050541 WO2020188206A1 (fr) | 2019-03-21 | 2020-03-13 | Procede de controle du freinage des roues d'un avion et controleur de freinage de roues associe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3941825A1 true EP3941825A1 (fr) | 2022-01-26 |
Family
ID=67742588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20726197.5A Pending EP3941825A1 (fr) | 2019-03-21 | 2020-03-13 | Procede de controle du freinage des roues d'un avion et controleur de freinage de roues associe |
Country Status (8)
Country | Link |
---|---|
US (1) | US11981312B2 (fr) |
EP (1) | EP3941825A1 (fr) |
JP (1) | JP2022525774A (fr) |
CN (1) | CN113544056A (fr) |
BR (1) | BR112021018327A2 (fr) |
CA (1) | CA3129015A1 (fr) |
FR (1) | FR3093993B1 (fr) |
WO (1) | WO2020188206A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112678154B (zh) * | 2021-01-11 | 2022-07-01 | 中南大学 | 一种具有干扰在线估计的飞机防滑刹车系统控制方法 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1546878A (fr) * | 1966-11-29 | 1968-11-22 | Saab Ab | Dispositif pour régler la portance d'un avion pendant l'approche et pour inverser la poussée des réacteurs pendant le roulage au sol |
CA2156510C (fr) * | 1993-03-06 | 2005-08-09 | Trevor Charles Wells | Systeme de commande selective et sequentielle de freins d'aeronefs |
US5539642A (en) * | 1993-05-21 | 1996-07-23 | The Boeing Company | Fuzzy logic autobrake system for aircraft |
US5505531A (en) * | 1995-05-12 | 1996-04-09 | The Boeing Company | Method to maintain brake stack closure during autobrake application |
US7720579B2 (en) * | 2006-12-20 | 2010-05-18 | The Boeing Company | Method, system, and computer program product for performance monitored aircraft rejected takeoff braking |
US8393689B2 (en) * | 2006-12-22 | 2013-03-12 | The Boeing Company | Autobraking interlock for an aircraft electric brake system |
FR2920196B1 (fr) * | 2007-08-20 | 2013-08-09 | Aircelle Sa | Inverseur de poussee avec systeme de freinage des actionneurs |
FR2930973B1 (fr) * | 2008-05-06 | 2010-04-23 | Airbus France | Procede et dispositif de mise en oeuvre des inverseurs de poussee d'un aeronef |
FR2941554B1 (fr) * | 2009-01-29 | 2011-04-01 | Airbus France | Procede et dispositif d'aide au pilotage d'un aeronef lors d'une phase d'atterrissage |
FR2943037B1 (fr) * | 2009-03-11 | 2012-09-21 | Airbus France | Systeme de commande d'aeronef a architecture modulaire integre. |
FR2978736B1 (fr) * | 2011-08-01 | 2013-09-27 | Airbus Operations Sas | Dispositif et procede de determination d'un etat de piste, aeronef comprenant un tel dispositif et systeme d'aide au pilotage exploitant cet etat de piste |
US9164505B1 (en) * | 2012-05-22 | 2015-10-20 | The Boeing Company | Automatic rejected takeoff system |
US9296488B2 (en) * | 2013-03-06 | 2016-03-29 | 3Rd Millennium Solutions, Inc. | Aircraft braking early warning system |
US9213334B2 (en) * | 2014-05-01 | 2015-12-15 | Goodrich Corporation | Runway traction estimation and reporting system |
DE102014210025A1 (de) * | 2014-05-26 | 2015-12-17 | Rolls-Royce Deutschland Ltd & Co Kg | Schubumkehrkaskadenelement einer Fluggasturbine |
FR3045563B1 (fr) * | 2015-12-18 | 2018-02-09 | Messier-Bugatti-Dowty | Procede et systeme de commande de freinage d’un aeronef equipe d’un systeme d’inversion de poussee |
US10815000B2 (en) * | 2016-05-31 | 2020-10-27 | Embraer S.A. | Short rejected takeoff system and method |
US9856035B1 (en) * | 2016-06-09 | 2018-01-02 | Goodrich Corporation | Systems and methods for dynamic light control |
US11037454B2 (en) * | 2016-11-03 | 2021-06-15 | The Boeing Company | Automatic braking system controller |
GB2563214A (en) * | 2017-06-05 | 2018-12-12 | Airbus Operations Ltd | Landing gear |
US20190054906A1 (en) * | 2017-08-18 | 2019-02-21 | Rockwell Collins, Inc. | Aircraft braking system and method using runway condition parameters |
US11186362B2 (en) * | 2018-12-17 | 2021-11-30 | The Boeing Company | Brake systems for aircraft and related methods |
-
2019
- 2019-03-21 FR FR1902924A patent/FR3093993B1/fr active Active
-
2020
- 2020-03-13 US US17/436,263 patent/US11981312B2/en active Active
- 2020-03-13 CN CN202080019250.3A patent/CN113544056A/zh active Pending
- 2020-03-13 WO PCT/FR2020/050541 patent/WO2020188206A1/fr active Application Filing
- 2020-03-13 CA CA3129015A patent/CA3129015A1/fr active Pending
- 2020-03-13 BR BR112021018327A patent/BR112021018327A2/pt unknown
- 2020-03-13 EP EP20726197.5A patent/EP3941825A1/fr active Pending
- 2020-03-13 JP JP2021556262A patent/JP2022525774A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US20220169216A1 (en) | 2022-06-02 |
FR3093993A1 (fr) | 2020-09-25 |
WO2020188206A1 (fr) | 2020-09-24 |
US11981312B2 (en) | 2024-05-14 |
BR112021018327A2 (pt) | 2021-11-23 |
JP2022525774A (ja) | 2022-05-19 |
CN113544056A (zh) | 2021-10-22 |
CA3129015A1 (fr) | 2020-09-24 |
FR3093993B1 (fr) | 2021-02-26 |
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