EP1588281A2 - Systeme de controle du regime d'un moteur d'un aeronef - Google Patents
Systeme de controle du regime d'un moteur d'un aeronefInfo
- Publication number
- EP1588281A2 EP1588281A2 EP04705436A EP04705436A EP1588281A2 EP 1588281 A2 EP1588281 A2 EP 1588281A2 EP 04705436 A EP04705436 A EP 04705436A EP 04705436 A EP04705436 A EP 04705436A EP 1588281 A2 EP1588281 A2 EP 1588281A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- value
- information
- values
- sources
- valid
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
Definitions
- the present invention relates to a system for controlling the speed of at least one engine of an aircraft, in particular of a transport aircraft.
- each engine of a transport aircraft is associated with a control unit which comprises in particular: - a regulating means for acting on the engine speed, as a function of control orders received.
- This regulating means is capable of regulating the flow of fuel intended to supply the engine; and
- a calculation unit for example an electronic engine regulator of the EEC ("Electronic Engine Control") type, which determines the control orders for said regulation means.
- EEC Electronic Engine Control
- This calculation unit uses in particular information relating to the conditions in which the aircraft is operating, that is to say information relating to aerodynamic parameters such as static and total temperatures and / or static and total pressures, to determine these order orders. For security reasons, said calculation unit uses several different sources to obtain this information, namely generally:
- an engine sensor which is capable of measuring the value of the aerodynamic parameter considered on the engine
- - two aircraft sources for example of the ADIRU ("Air Data Inertial Reference Unit") type, which also have access to values of this aerodynamic parameter and which are individually linked by specific links, for example of the ARINC 429 type, to said calculation unit.
- the calculation unit must therefore select, from among the different values of the aerodynamic parameter it receives, the one it will use for its calculations. In some situations, poor selection is possible, which can have very damaging effects. Indeed, erroneous information which is not representative of the actual flight conditions of the aircraft results in an erroneous calculation of the engine speed so that the engine can then be made to operate in a mode not suitable for said flight conditions . It can then even go out, for example when the speed controlled is too low for the conditions encountered.
- the object of the present invention is to remedy these drawbacks. It relates to a control system, particularly reliable and at low cost, of the speed of at least one engine of an aircraft, making it possible to avoid an erroneous selection of the value of an aerodynamic parameter used.
- said control system of the type comprising:
- a first and a second source of information determining first and second values of at least one predetermined aerodynamic parameter of the aircraft
- At least one control unit of said engine comprising:. at least one regulation means for acting on the engine speed, as a function of received control orders; . at least one sensor which is capable of measuring a fourth value of said aerodynamic parameter, on said engine; and. a calculation unit which is connected to said first and second sources of information, to said regulating means and to said sensor, which receives said first, second and fourth values of said aerodynamic parameter, which takes these into account to select a value of said aerodynamic parameter as control value, and which uses the control value thus selected at the less to determine a control order which is transmitted to said regulating means, is remarkable in that:
- said system further comprises:
- an information transmission network to which said first, second and third sources of information and said computing unit are connected, enabling information transmission
- first, second and third sources of information respectively determine first, second and third accuracy information indicating the accuracy respectively of said first, second and third values of said aerodynamic parameter
- said calculation unit selects said control value using said first, second, third and fourth values of the aerodynamic parameter, as well as said first, second and third accuracy information.
- the calculation unit has not only a large number of values (first to fourth values) for making the selection and choosing the most precise and appropriate value for the aerodynamic parameter considered, but also valuable help provided by said accuracy information, which allow it to make the best possible selection of value, and above all to avoid any bad selection (unlike the aforementioned known solution), as we will see more detail below.
- the different sources of information are independent of each other, a possible error from one of said sources cannot affect the other sources.
- control system according to the invention is particularly reliable.
- the calculation unit gives priority to the first, second, third values of said sources of information relative to said fourth value of the sensor, it chooses said fourth value only in the event of a fault. agreement specified below between all values, and it uses said accuracy information at least to resolve any ambiguities.
- said calculation unit uses as command value:
- said calculation unit carries out a weighting when a change of selection of value for the control value (for example when it uses as control value first said third value of the third source d 'information, then said first value of the first information source) so as to avoid sudden jumps of the selected command value and used in subsequent processing.
- - Said calculation unit receives said fourth value on two different channels, and uses the two values thus received.
- the control system to control the engine speeds of an aircraft fitted with a plurality of engines, for example four engines, the control system according to the invention comprises, for each engine whose engine speed it controls, a unit specific control (as mentioned above) comprising a regulation means, a sensor and a calculation unit.
- each of said sources of information receives from all the control units the fourth values measured by the sensor of each of said control units and determines its accuracy information from these fourth values.
- each calculation unit uses directly or indirectly n + 3 values of the aerodynamic parameter considered (namely said first, second and third values of said sources of information, which are taken into account directly (as well as its fourth value), and the n fourth values of said n sensors, which are taken into account indirectly in calculating accuracy information), which increases the accuracy of the selection and increases security.
- each information source - calculates all the differences between, on the one hand, said fourth values and, on the other hand, its own value of said aerodynamic parameter;
- Figure 1 is the block diagram of a system according to the invention.
- FIG. 2 schematically illustrates the different stages of a selection mode implemented by a calculation unit of a system according to the invention.
- FIGS. 3 to 8 schematically show different calculation elements allowing the implementation of different stages of the selection mode illustrated in FIG. 2.
- FIG. 9 schematically shows a system according to the invention, applied to an aircraft provided with a plurality of engines.
- FIG. 10 schematically shows a source of information for a system according to the invention.
- the system 1 is intended to control the speed of at least one engine 2 of an aircraft, in particular of a transport aircraft.
- Said system 1 is of the type comprising:
- a first and a second usual information source 3 and 4 of the aircraft for example of the ADIRU ("Air Data Inertial Reference Unit") type, which are capable of determining first and second values of at least one parameter predetermined aerodynamics of said aircraft, such as for example the static temperature, the total temperature, the static pressure or the total pressure; and
- ADIRU Air Data Inertial Reference Unit
- This regulating means 6 is capable of regulating the flow of fuel intended to supply the engine 2; .
- at least one sensor 7 which is capable of measuring a fourth value of said aerodynamic parameter, on said engine 2;
- a computing unit 8 for example an electronic engine regulator of the EEC ("Electronic Engine Control") type, which determines the control orders for said regulating means 6 and which can be part of a digital electronic regulating system at full FADEC (Full Authority Digital Engine Control) engine authority.
- Said computing unit 8 is connected to said first and second sources of information 3 and 4, as specified below, as well as said control means 6 and said sensor 7, respectively via links 10 and 11.
- the calculation unit 8 receives said first, second and fourth values of said aerodynamic parameter, and takes these into account to select a value of said aerodynamic parameter as a control value. It uses the command value thus selected at least to determine a command command which is transmitted to said regulating means 6.
- said control system 1 further comprises:
- FIG. 1 generally and schematically by links L1, L2, L3 and L4. Said network 12 allows information to be transmitted between said sources of information 3, 4, 9 and said computing unit 8.
- these elements 3, 4, 8, 9 can communicate with each other without the need to connect them directly to each other by specific individual connections (of the ARINC 429 type for example), which makes it possible to reduce the cost and the system dimensions 1.
- specific individual connections of the ARINC 429 type for example
- said first, second and third sources of information 3, 4 and 9 respectively determine first, second and third accuracy information indicating the accuracy respectively of said first, second and third values of said aerodynamic parameter, as specified below;
- the calculation unit 8 selects said control value using said first, second, third and fourth values of the aerodynamic parameter, as well as said first, second and third accuracy information.
- said calculation unit 8 gives priority to the values of said information sources 3, 4, 9 with respect to said fourth value of sensor 7. It chooses said fourth value only in the event of a failure to agree between all the values received, and it uses the said accuracy information at least to remove any ambiguities, as specified below.
- the calculation unit 8 not only has a large number of values (first to fourth values) for making the selection and choosing the most precise and most appropriate value for the aerodynamic parameter considered, but also has d '' precious help provided by said accuracy information, help which enables it to make the best possible selection of value, and above all to avoid any (wrong) selection of an inappropriate value (caused for example by a malfunction of a sensor).
- the calculation unit 8 implements a particular selection mode (or law), for selecting the command value from the various values received, mentioned above.
- said calculation unit 8 implements the selection law, the block diagram of which is shown in steps E1 to E7 in FIG. 2.
- the calculation unit 8 first checks in step E1 if the fourth value received from the sensor 7 is available and valid. If this is not the case (yes: Y; no: N), it implements step E2, to check whether said first, second and third values of said first, second and third sources of information 3, 4 and 9 are valid and agree.
- step E1 if the fourth value received from the sensor 7 is available and valid. If this is not the case (yes: Y; no: N), it implements step E2, to check whether said first, second and third values of said first, second and third sources of information 3, 4 and 9 are valid and agree.
- This step E2 can be implemented using the calculation element C2 shown diagrammatically in FIG. 3.
- This calculation element C2 comprises:
- a first AND logic gate 14 whose inputs 14.1, 14.2 and 14.3 receive the validity information from said sources 3, 4 and 9;
- step E3 can be implemented using the calculation element C3 shown in FIG. 4.
- This calculation element C3 comprises:
- the calculation element C3 is implemented for all the pairs of possible sources, comprising two of said three sources 3, 4 and 9;
- step E4 the calculation unit 8 implements step E4, to check whether one of said first, second and third values is valid and if the corresponding accuracy information is worth 1 or not.
- This step E4 can be implemented using the calculation element C4 shown in FIG. 5.
- This calculation element C4 includes an AND logic gate 19, of which the inputs 19.1 and 19.2 are informed, for the source considered , respectively if the corresponding (first, second or third) value is valid and if its accuracy information is 1 or not, and the result of which is available at output 1 9.3.
- the solution S3 of the selection concerns the selection of this value which is valid, as a command value, and, if the result is negative (N), the solution S4 concerns the selection of a predetermined value (which is therefore selected by default).
- step E5 the calculation unit 8 implements step E5, to check whether one of said first, second and third values of the sources these 3, 4 and 9 is valid and is in agreement with another of the latter, as well as with said fourth value.
- This step E5 can be implemented using the calculation element C5 shown in FIG. 6.
- This calculation element C5 has an AND logic gate 20 for output 20.3, and whose inputs 20.1 and 20.2 are connected respectively at doors OR logic 21 and 22.
- the OR logic gate 21 is connected to a computing unit 23 by its inputs 21.1 and 21.2.
- This calculation unit 23 includes:
- a first AND logic gate 24 whose inputs 24.1 and 24.2 respectively receive the information if the value of the source] (3, 4 or 9) considered is in agreement with a first indication or value VA of said fourth value of sensor 7, and if this source] (3, 4 or 9) is valid.
- the fourth value measured by the sensor 7 is in fact transmitted on two different channels A and B according to two indications or values VA and VB; and.
- OR logic gate 22 is connected by its inputs 22.1 and 22.2 respectively:
- the solution S5 of the selection relates to the selection of the value (of said source ⁇ ) which is in agreement, as control value.
- step E ⁇ to check whether two of said first, second and third values are valid and in agreement (sub-step E6A) and if the product of the two corresponding accuracy information is equal to 1 (sub-step E6B).
- This step E6 can be implemented using the calculation element C6 shown in FIG. 7.
- This calculation element C6 comprises:
- the solution S6 of the selection concerns the selection of the lower value of the two sources i and
- the calculation unit 8 implements the step E7, to check whether one of said first, second and third value is valid and if it is in agreement with said fourth value (sub-step E7A) and if its accuracy information is equal to 1 (sub-step E7B).
- This step E7 can be implemented using the calculation element C7 shown in FIG. 8.
- This calculation element C7 includes an AND logic gate 30, an input 30.1 of which is connected to the calculation 23 via gate 21 (similar to that of FIG. 6), whose input 30.2 is informed whether the accuracy information of the source considered is worth 1 or not, and whose result is available at output 30.3 .
- said calculating unit 8 carries out a weighting during a change of selection of value for the command value and, moreover, it can be disconnected as regards the selection of the command value. This is particularly useful on the ground to avoid false detections.
- the control system 1 is particularly well suited for simultaneously controlling the speeds of all the engines 2A, 2B, 2C, 2D of a multi-engine aircraft, as shown in FIG. 9.
- said system of control 1 comprises, in addition to the three sources of information 3, 4 and 9 and the information transmission network 12, a control unit 5A, 5B, 5C, 5D for each of said motors 2A, 2B, 2C, 2D, said control units 5A, 5B, 5C, 5D being similar to control unit 5 in FIG. 1 (the same elements having the same references, accompanied in FIG. 9 by one of the letters A, B, C or D to differentiate between them, depending on the engine 2A, 2B, 2C or 2D with which they are associated).
- Each of said sources of information 3, 4, 9 transmits to its network 12, its (first, second or third) value of the aerodynamic parameter predetermined by a link 37, and its accuracy information by a link 31.
- each control unit 5A, 5B, 5C and 5D receives:
- each of said control units 5A, 5B, 5C and 5D transmits the corresponding fourth value, via a link 34, to the network 12. These fourth values are then transmitted to the different sources 3, 4, 9 via links 35A, 35B, 35C and 35.D.
- each of said sources 3, 4, 9, one of which is shown in FIG. 10 can determine its accuracy information from the fourth values measured on the different motors 2A, 2B, 2C and 2D and starting from its own value received by a link 36.
- each source of information 3, 4, 9 to determine its accuracy information, each source of information 3, 4, 9:
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0300904 | 2003-01-28 | ||
FR0300904A FR2850356B1 (fr) | 2003-01-28 | 2003-01-28 | Systeme de controle du regime d'au moins un moteur d'un aeronef |
PCT/FR2004/000176 WO2004078586A2 (fr) | 2003-01-28 | 2004-01-27 | Systeme de controle du regime d’un moteur d’un aeronef |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1588281A2 true EP1588281A2 (fr) | 2005-10-26 |
Family
ID=32669261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04705436A Ceased EP1588281A2 (fr) | 2003-01-28 | 2004-01-27 | Systeme de controle du regime d'un moteur d'un aeronef |
Country Status (5)
Country | Link |
---|---|
US (1) | US7188008B2 (fr) |
EP (1) | EP1588281A2 (fr) |
CA (1) | CA2488310C (fr) |
FR (1) | FR2850356B1 (fr) |
WO (1) | WO2004078586A2 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2859787B1 (fr) * | 2003-09-16 | 2006-01-20 | Thales Sa | Dispositif et procede de determination de la temperature totale pour aeronef |
FR2916290A1 (fr) * | 2007-05-18 | 2008-11-21 | Airbus France Sas | Systeme de selection d'une donnee representative d'un parametre de l'air, procede et programme d'ordinateur associes |
GB0816637D0 (en) * | 2008-09-12 | 2008-10-22 | Rolls Royce Plc | Blade Pitch Control |
GB0816636D0 (en) * | 2008-09-12 | 2008-10-22 | Rolls Royce Plc | Controlling rotor overspeed |
FR2941314B1 (fr) * | 2009-01-20 | 2011-03-04 | Airbus France | Procede de commande dun aeronef mettant en oeuvre un systeme de vote. |
FR2941553B1 (fr) * | 2009-01-28 | 2011-06-03 | Airbus France | Systeme de traitement de donnees representatives d'un parametre de l'air et aeronef comprenant un tel systeme |
FR2941552B1 (fr) * | 2009-01-28 | 2011-02-18 | Airbus France | Systeme de selection d'une donnee representative d'un parametre de l'air, systeme de commande de moteur, aeronef comprenant de tels systemes et procede associe |
FR2941551B1 (fr) * | 2009-01-28 | 2011-06-03 | Airbus France | Circuit electronique de determination d'une donnee representative d'un parametre de l'air et systeme comprenant un tel circuit |
WO2014158238A1 (fr) | 2013-03-14 | 2014-10-02 | Rolls-Royce Corporation | Procédé et système de commande de propulsion intégrée intelligente |
US11199867B2 (en) | 2018-12-07 | 2021-12-14 | Textron Innovations, Inc. | Throttle system |
US11542883B2 (en) | 2018-12-07 | 2023-01-03 | Textron Innovations, Inc. | Throttle system |
Citations (1)
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US5001638A (en) * | 1989-04-18 | 1991-03-19 | The Boeing Company | Integrated aircraft air data system |
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US4208591A (en) * | 1973-06-20 | 1980-06-17 | Westinghouse Electric Corp. | Gas turbine power plant control apparatus including a turbine load control system |
US4639863A (en) * | 1985-06-04 | 1987-01-27 | Plus Development Corporation | Modular unitary disk file subsystem |
US4742473A (en) * | 1985-07-16 | 1988-05-03 | Shugar Joel K | Finite element modeling system |
DE3610937A1 (de) * | 1986-04-02 | 1987-10-08 | Bosch Gmbh Robert | Vorrichtung zur daempfung von bewegungsablaeufen |
DE3625375A1 (de) * | 1986-07-26 | 1988-02-04 | Porsche Ag | Kuehlluftklappen- und geblaesesteuerung fuer kraftfahrzeuge |
FR2617120B1 (fr) * | 1987-06-24 | 1989-12-08 | Aerospatiale | Systeme pour la commande d'un aeronef en roulis et en lacet |
US4928638A (en) * | 1989-09-12 | 1990-05-29 | Overbeck Wayne W | Variable intake manifold |
US5206810A (en) * | 1991-02-07 | 1993-04-27 | General Electric Company | Redundant actuator control |
US5313905A (en) * | 1991-05-09 | 1994-05-24 | Calderon Albert A | Twin wing sailing yacht |
US5317937A (en) * | 1991-09-14 | 1994-06-07 | Honda Giken Kogyo Kabushiki Kaisha | Control system for vehicle automatic transmission |
JP3149628B2 (ja) * | 1993-06-11 | 2001-03-26 | 三菱自動車工業株式会社 | 車両用自動変速機 |
US5592195A (en) * | 1994-11-21 | 1997-01-07 | International Business Machines Corporation | Information displaying device |
JP3802965B2 (ja) * | 1997-03-21 | 2006-08-02 | ヴイ.ウリヤノフ セルゲイ | 非線形の物理的な制御対象の最適制御のための自己組織化方法及び装置 |
JPH10270535A (ja) * | 1997-03-25 | 1998-10-09 | Nikon Corp | 移動ステージ装置、及び該ステージ装置を用いた回路デバイス製造方法 |
US6208497B1 (en) * | 1997-06-26 | 2001-03-27 | Venture Scientifics, Llc | System and method for servo control of nonlinear electromagnetic actuators |
US6600240B2 (en) * | 1997-08-08 | 2003-07-29 | General Electric Company | Variable speed wind turbine generator |
US6137187A (en) * | 1997-08-08 | 2000-10-24 | Zond Energy Systems, Inc. | Variable speed wind turbine generator |
US6206299B1 (en) * | 1998-04-17 | 2001-03-27 | Commercial Vehicle Systems, Inc. | Traction enhancing deployment system |
JP3539217B2 (ja) * | 1998-06-25 | 2004-07-07 | 日産自動車株式会社 | 制駆動力制御装置 |
US6231011B1 (en) * | 1998-11-02 | 2001-05-15 | University Of Houston System | Satellite angular momentum control system using magnet-superconductor flywheels |
US6952060B2 (en) * | 2001-05-07 | 2005-10-04 | Trustees Of Tufts College | Electromagnetic linear generator and shock absorber |
US6792758B2 (en) * | 2002-11-07 | 2004-09-21 | Siemens Westinghouse Power Corporation | Variable exhaust struts shields |
US6745727B1 (en) * | 2003-06-16 | 2004-06-08 | International Engine Intellectual Property Company, Llc | Engine- and vehicle- speed-based engine cooling fan control |
-
2003
- 2003-01-28 FR FR0300904A patent/FR2850356B1/fr not_active Expired - Fee Related
-
2004
- 2004-01-27 EP EP04705436A patent/EP1588281A2/fr not_active Ceased
- 2004-01-27 CA CA2488310A patent/CA2488310C/fr not_active Expired - Fee Related
- 2004-01-27 WO PCT/FR2004/000176 patent/WO2004078586A2/fr active Application Filing
- 2004-01-27 US US10/516,539 patent/US7188008B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5001638A (en) * | 1989-04-18 | 1991-03-19 | The Boeing Company | Integrated aircraft air data system |
Also Published As
Publication number | Publication date |
---|---|
FR2850356A1 (fr) | 2004-07-30 |
US20050174073A1 (en) | 2005-08-11 |
WO2004078586A3 (fr) | 2004-10-28 |
CA2488310A1 (fr) | 2004-09-16 |
US7188008B2 (en) | 2007-03-06 |
FR2850356B1 (fr) | 2005-03-18 |
WO2004078586A2 (fr) | 2004-09-16 |
CA2488310C (fr) | 2012-04-10 |
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