CN105569847A - Auxiliary power unit starting acceleration fuel oil flow control method - Google Patents
Auxiliary power unit starting acceleration fuel oil flow control method Download PDFInfo
- Publication number
- CN105569847A CN105569847A CN201510926015.5A CN201510926015A CN105569847A CN 105569847 A CN105569847 A CN 105569847A CN 201510926015 A CN201510926015 A CN 201510926015A CN 105569847 A CN105569847 A CN 105569847A
- Authority
- CN
- China
- Prior art keywords
- fuel flow
- apu
- acceleration
- value
- power unit
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/28—Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/50—Application for auxiliary power units (APU's)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/04—Purpose of the control system to control acceleration (u)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention provides an auxiliary power unit (APU) starting acceleration fuel oil flow control method, which is used for fuel oil flow control in an APU starting acceleration process. The method aims to solve the problems that the existing control method difficultly coordinates a conflict between starting speedability and overtemperature protection, has more control law parameters and is poor in environmental suitability. The method calculates an acceleration fuel oil flow expected value by unique step by step ratio control and two exhausting temperature limiting lines are arranged. When exhausting temperature exceeds an inhibit line (red line), a fuel oil flow is forcibly set to be 0, and protective parking is triggered; if the exhausting temperature only exceeds an alarm line (yellow line), negative correction is performed on the fuel oil flow expected value calculated by an acceleration curve according to an exceeded margin so as to reduce the fuel oil flow (parking is unnecessary). The method is high in environmental suitability, considers both starting speedability and safety and can obviously improve usability and dispatch rate of the APU.
Description
Technical field
The invention belongs to aviation power control field, relate to a kind of auxiliary power unit (APU) controlling method, be applicable to APU starting period and reach the fuel flow control during starting-steady-state speed switching point to rotating speed from successfully catching fire.
Background technique
Auxiliary power unit (APU) is a kind of small-sized gas turbine engine, is mainly used in as the starting of aircraft master motor and environmental control system provide bleed, and by Accessory Gear Box for aircraft generating system provides air horsepower.When aircraft is on ground, the air source truck of the alternative heaviness of APU and supply vehicle; Taking off in process, the power of master motor can all climb for accelerating, and takes off performance to improve; After aircraft landing, master motor can cut out in time, to save fuel oil and to reduce airport noise.Therefore, modern big-and-middle-sized aircraft is all equipped with APU.
A critical function during APU controls is that fuel flow controls; By controlling fuel flow, realize the control to APU rotating speed.APU rotating speed controls to be divided into following several stages: after controller receives starting order, first opening starter motor (as powered up to actuating motor), turning APU by starter belt; When reaching certain rotating speed, start fuel feeding igniting; Light a fire successfully, starter motor and gas mixture burn produce high temperature, high-pressure gas driving under, APU accelerates further; When rotating speed reaches certain thresholding, turn off starter motor, allow APU maintain running of supporting oneself, and continue oneself to accelerate to starting-steady-state speed switching point (as 95%); After this enter stable state and control the stage, APU can outwards provide bleed or air horsepower.
Wherein, enter steady-state process before starting accelerate fuel flow control be APU fuel oil control in an important step.Control as a kind of transient process, start and accelerate to control should ensure, within the time short as far as possible, APU is accelerated to desired speed, prevent from affecting because of excessive discharge temperature the working life of APU again, even cause APU body to damage.In addition, APU starting both may, on ground, also may, make system context complicated and changeable aloft.Therefore, the technical difficulty of control is very large.
Control the present invention is directed enter the accelerating process fuel oil before steady-state process to APU from lighting a fire successfully.Traditional acceleration fuel oil control method can be divided into following three kinds.A kind of is determine fuel flow expected value according to predetermined acceleration plan (i.e. acceleration curve); In order to prevent APU overtemperature, an overtemperature prote line being set again, triggering when delivery temperature exceedes this guard wire and stopping.Another kind method is the temperature stress can born according to APU, determines " desirable " exhaust temperature curve, by controlling fuel flow, makes delivery temperature along this curvilinear motion (also having overtemperature prote).These two kinds of methods stress respectively " accelerate plan " and in " temperature limiting " two targets one, and the former is simple speed closed loop, and latter is simple temperature closed loop.The third method is combined the two, namely calculates two fuel flow expected values according to acceleration curve and temperature curve respectively, then get smaller wherein.These methods are all difficult to the Security and the working life that had both ensured APU, give full play to again function and the performance of APU.In addition, conventional method mostly adopts proportional-integral-differential (PID) based on gain scheduling or proportional, integral (PI) control algorithm, need the parameter of adjusting more in algorithm, when parameter tuning is bad system Control platform and be just difficult to ensure to the adaptability of environment.
Summary of the invention
Start and accelerate fuel flow controlling method for overcoming traditional APU and can not take into account " accelerating plan " and " delivery temperature restriction " two kinds of targets and control law parameter is many, environmental suitability is poor shortcoming well, the present invention proposes a kind of new APU and starts acceleration fuel flow controlling method, so that under guarantee APU Security and the prerequisite in working life, obtain best starting acceleration performance, improve the environmental suitability of system simultaneously.
Technological scheme of the present invention is as follows:
A kind of auxiliary power unit starts acceleration fuel flow controlling method, comprises following treatment step:
1.1) according to predetermined acceleration curve, the expected value of fuel flow is calculated;
1.2) according to the degree whether delivery temperature exceedes predetermined warning line and exceed, the correction value to fuel flow expected value is calculated;
1.3) according to expected value and the correction value of fuel flow, fuel flow bid value is calculated;
1.4) if delivery temperature does not exceed predetermined inhibit wire, then adopt the fuel flow bid value calculated, otherwise fuel flow bid value is set to by force 0 and triggering protective parking;
Described warning line and inhibit wire are determined primarily of the structural feature of controlled device and applying working condition, and wherein inhibit wire is higher than warning line.
Above step 1.1) when utilizing the plan of acceleration to calculate fuel flow expected value, adopt a kind of proportional control of " camping step by step " formula, namely fuel flow expected value equals a basic value and rotating speed deviation ratio controlled quentity controlled variable sum.
In the proportional control of above-mentioned " camping step by step " formula, APU just order catch fire APU accelerates slowly or on a cycle occurred to guard against correction because delivery temperature is super time, described basic value is reset, otherwise keeps former basic value constant.
Above-mentioned basic value carries out resetting the fuel flow expected value specifically making basic value equal the unmodified in a cycle.
In the proportional control of above-mentioned " camping step by step " formula, the calculating of rotating speed deviation ratio controlled quentity controlled variable specifically comprises the following steps:
5.1) by current APU rotating speed, inlet pressure and predetermined acceleration curve, reference acceleration is determined, the incremental speed namely expected;
5.2) by carrying out integration selectively to reference acceleration, computing reference rotating speed;
5.3) according to reference rotation velocity and APU actual speed, rotating speed deviation is calculated;
5.4) according to rotating speed deviation, proportional control amount is calculated.
Above step 5.2) in calculate the concrete logic of reference rotation velocity and be:
When APU just order catch fire or APU accelerates slowly or a upper cycle occurred to guard against correction because delivery temperature is super time, make reference rotation velocity equal APU actual speed; Otherwise, when the fuel flow expected value that a upper computation of Period goes out is no more than predetermined maximum acceleration fuel flow, was added to reference to acceleration in the reference rotation velocity in a upper cycle, and obtained the reference rotation velocity in this cycle, otherwise kept the reference rotation velocity in a upper cycle.
Above step 1.1) after calculating fuel flow expected value, also to carry out amplitude limiting processing, make it be between maximum acceleration fuel flow and minimum acceleration fuel flow.
Above step 1.2) in, the calculation procedure of fuel flow correction value comprises:
8.1) according to predetermined warning line, current APU rotating speed and environmental conditions, corresponding delivery temperature warning value is determined;
8.2) calculate the difference of actual exhaust air temperature and delivery temperature warning value, obtain the amplitude that delivery temperature surpasses warning;
8.3) utilize an anticipatory control link, warning amplitude is surpassed to delivery temperature and corrects;
8.4) proportional, integral computing is carried out to the amplitude that the delivery temperature after correcting surpasses warning;
8.5) comparative example-integral operation result carries out lower amplitude limit, is set to 0 by force when result is less than 0;
Described step 1.3) method that calculates fuel flow bid value according to the expected value of fuel flow and correction value deducts correction value by fuel flow expected value.
Above step 1.3) after calculating fuel flow bid value, also to recycle a minimum fuel flow and lower amplitude limit is carried out to it.
The present invention compared with prior art, has following technique effect:
Traditional auxiliary power unit starts acceleration fuel flow controlling method, or based on acceleration curve, or based on exhaust temperature curve, or utilize " getting little logic " the two to be combined simply, be difficult to obtain desirable control effects.In addition; conventional method generally adopts Traditional PID or PI to regulate; gain parameter is natively more; and in order to adapt to speed dynamic wide ranges and can start under various environmental conditions; usually gain scheduling (namely under different situations by different gain parameters) is also adopted; further increase the complexity of control law and the difficulty of parameter tuning, be easy to cause because parameter tuning is bad the environmental suitability of system poor.
The present invention, by " accelerating plan " and " delivery temperature restriction " combination, divides elementary object into accelerometer, as long as delivery temperature does not transfinite, just strictly follows the tracks of acceleration curve.For delivery temperature, arrange two restraining lines, only when exceeding inhibit wire (red line), just triggering protective stops, and only reduces fuel flow by negative sense correction, and need not stop when surmounting warning line (yellow line).Its advantage has taken into account the rapidity and Security of starting, and can ensure best starting acceleration performance, can ensure again Security and the working life of APU, substantially increase the usability of APU and send rate.Simultaneously, the present invention is by a kind of proportional control (i.e. an additional proportion adjustment of the basic value that can reset) of formula of camping step by step, very wide for script dynamic range starting accelerating process (corresponding APU speed range is approximately from 10% to 95%) is converted into " little deviation " control procedure doing minor adjustments near " basic value " one by one, thus make control more easily, the environmental suitability of system is stronger.
Accompanying drawing explanation
Fig. 1 is that traditional APU based on acceleration curve starts acceleration fuel flow controlling method schematic diagram;
Fig. 2 is that traditional APU based on exhaust temperature curve starts acceleration fuel flow controlling method schematic diagram;
Fig. 3 traditional will speed up APU that curve and exhaust temperature curve combine and starts with getting little logic and accelerate fuel flow controlling method schematic diagram;
Fig. 4 is that APU of the present invention starts acceleration fuel flow controlling method schematic diagram.
Embodiment
APU of the present invention starts acceleration fuel flow controlling method, mainly contains following characteristics:
1 according to the user demand of APU and design objective, determines an acceleration curve meeting APU and to require starting time limit; Again according to structural feature and the applying working condition of APU, determine two delivery temperature restraining lines, one is warning line (yellow line), and one is inhibit wire (red line), and wherein red line position is higher than yellow line.
2 is basic controlling target with acceleration curve, calculates fuel flow expected value.Delivery temperature restraining line is as constraint conditio, as long as delivery temperature does not surmount arbitrary restraining line, just the direct fuel flow expected value calculated using acceleration curve is as fuel flow bid value.If delivery temperature exceedes red line, then fuel flow bid value is set to by force 0 and triggering protective parking.If delivery temperature only exceedes yellow line, then need not stop, but calculate a correction value according to the degree exceeded, with this, " negative sense " be carried out to fuel flow expected value and revise, to reduce fuel flow.
3 according to acceleration curve calculate fuel flow time, adopt a kind of proportional control of formula of camping step by step, its fuel flow expected value is made up of " proportional control amount " two-part of " basic value " and a rotating speed deviation.Proportional control take basic value as basic point (or biased), implements to regulate among a small circle.Basic value immobilizes usually, can be reset under given conditions.
4 determine that the logic of fuel flow " basic value " is: when " APU just orders and catches fire (and namely; start mode changes; be with separately to change into be jointly with by starter motor and APU by starter motor turn) " or " APU accelerates slowly (namely; have to start and hang sign) " or " a upper cycle occurred to guard against correction (namely; have the starting sign of overheating) because delivery temperature surpasses " time, fuel flow basic value is carried out " replacement ", otherwise keeps old value.
The method of 5 " replacement " fuel flow basic value is: make its fuel flow expected value equaling the unmodified in a cycle (that is, old fuel flow expected value being freezed, the basic value as new).
" the proportional control amount " of 6 rotating speed deviations, calculates as follows:
6.1) according to current APU rotating speed, inlet pressure and predetermined acceleration curve, reference acceleration is determined;
6.2) reference acceleration is carried out " selectively integration ", obtain reference rotation velocity;
6.3) according to reference rotation velocity and APU actual speed, rotating speed deviation is calculated;
6.4) according to rotating speed deviation, proportional control amount is calculated.
7 by the method for " selectivity integration " computing reference rotating speed are: if (APU just orders and catches fire) or (APU accelerates slowly) or (a upper cycle occurred because the super warning of delivery temperature is revised), (object makes rotating speed deviation be 0 then to make reference rotation velocity equal APU actual speed, thus the proportional control amount in this cycle is 0, because basic value is reset), otherwise, the fuel flow expected value gone out when a upper computation of Period is no more than by current APU rotating speed, inlet pressure and inlet temperature determine " maximum fuel flow (also can claim maximum acceleration fuel flow) " time, in the reference rotation velocity being added to a upper cycle with reference to acceleration (namely performing integration operation), obtain the reference rotation velocity in this cycle, otherwise, the reference rotation velocity in a upper cycle was kept (namely to suspend integration, delay accelerating process).
8 utilize " maximum (acceleration) fuel flow " and " minimum acceleration fuel flow (being determined by current APU rotating speed, inlet pressure and inlet temperature) ", upper and lower amplitude limit is carried out, to prevent rich extinction or fuel-lean blowout to the fuel flow expected value calculated by " fuel flow basic value " and " rotating speed deviation ratio controlled quentity controlled variable ".
9 is as follows according to the method for delivery temperature calculating fuel flow correction value:
9.1) by current APU rotating speed, inlet pressure and inlet temperature, corresponding delivery temperature warning value (yellow line) is determined.
9.2) according to actual exhaust air temperature and delivery temperature warning value, the amplitude that delivery temperature surpasses warning is calculated.
9.3) utilize an anticipatory control link to surpass warning amplitude to delivery temperature to correct, the hysteresis effect that in regulating with the proportional, integral compensated below, integration brings.
9.4) warning amplitude is surpassed to the delivery temperature through overcorrect, carry out proportional, integral computing.
9.5) comparative example-integral operation result carries out lower amplitude limit: be set to 0 by force when result is less than 0, namely only when delivery temperature exceedes warning line really just needs do " correction ".
10 due to overtemperature be modified to negative sense (subtractive) revise, therefore for preventing fuel flow too small and causing stopping working, need carry out lower amplitude limit again to revised fuel flow, lower limit is wherein " the minimum fuel flow " determined by inlet pressure and fuel oil temperature.
Below by a concrete example, the present invention is described in further detail (can with reference to accompanying drawing).
First, according to the structural feature of APU, design objective and test data, following basic function is determined:
F
1(N, P2) – accelerates plan (i.e. acceleration curve);
F
2(N, P2, T2) – delivery temperature warning line (i.e. yellow line);
F
3(N, P2, T2) – delivery temperature inhibit wire (i.e. red line), in the present embodiment, f
3() is taken as f
2()+85 DEG C;
F
4(N, P2, T2) – maximum acceleration fuel flow line (also can claim maximum fuel flow line);
F
5(N, P2, T2) – minimum acceleration fuel flow line;
F
6(the minimum fuel flow line of P2, T_FUEL) –.
Wherein, N is APU rotating speed, and P2 is APU inlet pressure, and T2 is inlet temperature, and T_FUEL is fuel oil temperature.Each function is stored in the nonvolatile memory of computer for controlling with the form of data sheet, is calculated by interpolation method of tabling look-up when needed.
Then, calculate starting according to following steps and accelerate fuel flow bid value (sampling period of each physical quantity and the control cycle of fuel flow, be all set as 20ms):
Step 1, according to following logic, determines the basic value WF_BASE of fuel flow expected value:
(if APU just orders and catches fire) or (APU accelerates slowly) or (a upper cycle occurred because the super warning of delivery temperature is revised), then WF_BASE gets the fuel flow expected value WF_N ' (see step 8) of the unmodified in a cycle, otherwise keeps old basic value constant.
Wherein, " APU just orders and catches fire " refers to: to light a fire successfully within 25ms; " APU accelerates slowly " refers to: current acceleration is less than reference acceleration NDOT
rEF(see step 2) occurs within 80ms to 100ms; " a upper cycle occurred because the super warning of delivery temperature is revised " refers to: the fuel flow correction value WF_EGT ' (see step 13) that a upper computation of Period goes out is greater than 0.
Step 2, according to acceleration plan, determines reference acceleration NDOT
rEF=f
1(N, P2).
Step 3 couple NDOT
rEFcarry out integration (adding up), obtain reference rotation velocity N
rEF.
Step 4, according to following logic, determines final reference rotation velocity N
rEF':
If (APU just orders and catches fire) or (APU accelerates slowly) or (a upper cycle occurred because the super warning of delivery temperature is revised), then make N
rEF' equal current APU rotating speed N, otherwise the fuel flow expected value WF_N (see step 7) gone out when a upper computation of Period is less than or equal to " maximum fuel flow (also can claim maximum acceleration fuel flow) " WF_MAX=f
4n is got time (N, P2, T2)
rEF, otherwise, kept the old N in a upper cycle
rEF'.
Step 5 is according to formula ERR_N=N
rEF'-N, calculates rotating speed deviation.
Step 6, according to formula WF_N_P=Kp1*ERR_N, calculates the proportional control amount of rotating speed deviation; Wherein proportional gain factor Kp1=2.0.
Step 7, according to formula WF_N=WF_BASE+WF_N_P, calculates (being determined by acceleration curve) fuel flow expected value.
WF_N is limited in maximum fuel flow WF_MAX (see step 4) and " minimum acceleration fuel flow " WF_N_MIN=f by step 8
5between (N, P2, T2), obtain the fuel flow expected value WF_N ' after amplitude limit.
Step 9, according to current APU rotating speed N, inlet pressure P2 and inlet temperature T2, determines corresponding " delivery temperature warning value (yellow line) " EGT_YELLOW=f
2(N, P2, T2).
Step 10, according to formula ERR_EGT=EGT-EGT_YELLOW, calculates the amplitude that delivery temperature surpasses warning.
Step 11 carries out anticipatory control to ERR_EGT according to the following formula, obtains ERR_EGT ':
ERR_EGT′(n)＝a*ERR_EGT′(n-1)+b*ERR_EGT(n)-c*ERR_EGT(n-1)
Wherein, n represents current control period, and n-1 represents a control cycle; Corrector parameter a=0.9, b=10, c=9.9.
Step 12 proportion of utilization-integration (PI) regulates algorithm, calculates the fuel flow correction value surpassing warning for delivery temperature
Wherein, proportional gain factor Kp2=0.24, integration gain factor Ki=0.012.
Step 13 couple WF_EGT carries out lower amplitude limit, and be set to 0 by force when being less than 0, result is designated as WF_EGT '.
Step 14, according to formula WF=WF_N '-WF_EGT ', obtains revised fuel flow expected value.
Step 15 utilizes " minimum fuel flow " WF_MIN=f
6(P2, T_FUEL) carries out lower amplitude limit to WF, obtains WF '.
Step 16 determines final fuel flow bid value WF_CMD: if the continuous 3s of delivery temperature EGT all exceedes " inhibit wire (red line) " EGT_RED=f
3(N, P2, T2), be then set to by force 0 by WF_CMD and triggering protective stops, otherwise, make WF_CMD get WF '.
Relevant parameters value in above embodiment, can according to the concrete feature of controlled device (APU body) and (or) user demand, modify or adjust.
Claims (9)
1. auxiliary power unit starts acceleration fuel flow controlling method, comprises following treatment step:
1.1) according to predetermined acceleration curve, the expected value of fuel flow is calculated;
1.2) according to the degree whether delivery temperature exceedes predetermined warning line and exceed, the correction value to fuel flow expected value is calculated;
1.3) according to expected value and the correction value of fuel flow, fuel flow bid value is calculated;
1.4) if delivery temperature does not exceed predetermined inhibit wire, then adopt the fuel flow bid value calculated, otherwise fuel flow bid value is set to by force 0 and triggering protective parking;
Described warning line and inhibit wire are determined primarily of the structural feature of controlled device and applying working condition, and wherein inhibit wire is higher than warning line.
2. auxiliary power unit according to claim 1 starts acceleration fuel flow controlling method, it is characterized in that: described step 1.1) when utilizing the plan of acceleration to calculate fuel flow expected value, adopt a kind of proportional control of " camping step by step " formula, namely fuel flow expected value equals a basic value and rotating speed deviation ratio controlled quentity controlled variable sum.
3. auxiliary power unit according to claim 2 starts acceleration fuel flow controlling method, it is characterized in that: in the proportional control of described " camping step by step " formula, APU just order catch fire APU accelerates slowly or on a cycle occurred to guard against correction because delivery temperature is super time, described basic value is reset, otherwise keeps former basic value constant.
4. auxiliary power unit according to claim 3 starts acceleration fuel flow controlling method, it is characterized in that: described basic value carries out resetting the fuel flow expected value specifically making basic value equal the unmodified in a cycle.
5. auxiliary power unit according to claim 2 starts acceleration fuel flow controlling method, it is characterized in that: in the proportional control of described " camping step by step " formula, the calculating of rotating speed deviation ratio controlled quentity controlled variable comprises the following steps:
5.1) by current APU rotating speed, inlet pressure and predetermined acceleration curve, reference acceleration is determined, the incremental speed namely expected;
5.2) by carrying out integration selectively to reference acceleration, computing reference rotating speed;
5.3) according to reference rotation velocity and APU actual speed, rotating speed deviation is calculated;
5.4) according to rotating speed deviation, proportional control amount is calculated.
6. auxiliary power unit according to claim 5 starts and accelerates fuel flow controlling method, it is characterized in that: described step 5.2) in calculate reference rotation velocity concrete logic be:
When APU just order catch fire or APU accelerates slowly or a upper cycle occurred to guard against correction because delivery temperature is super time, make reference rotation velocity equal APU actual speed; Otherwise, when the fuel flow expected value that a upper computation of Period goes out is no more than predetermined maximum acceleration fuel flow, was added to reference to acceleration in the reference rotation velocity in a upper cycle, and obtained the reference rotation velocity in this cycle, otherwise kept the reference rotation velocity in a upper cycle.
7. auxiliary power unit according to claim 1 starts acceleration fuel flow controlling method, it is characterized in that: described step 1.1) after calculating fuel flow expected value, also to carry out amplitude limiting processing, make it be between maximum acceleration fuel flow and minimum acceleration fuel flow.
8. auxiliary power unit according to claim 1 starts acceleration fuel flow controlling method, it is characterized in that:
Described step 1.2) in, the calculation procedure of fuel flow correction value comprises:
8.1) according to predetermined warning line, current APU rotating speed and environmental conditions, corresponding delivery temperature warning value is determined;
8.2) calculate the difference of actual exhaust air temperature and delivery temperature warning value, obtain the amplitude that delivery temperature surpasses warning;
8.3) utilize an anticipatory control link, warning amplitude is surpassed to delivery temperature and corrects;
8.4) proportional, integral computing is carried out to the amplitude that the delivery temperature after correcting surpasses warning;
8.5) comparative example-integral operation result carries out lower amplitude limit, is set to 0 by force when result is less than 0;
Described step 1.3) method that calculates fuel flow bid value according to the expected value of fuel flow and correction value deducts correction value by fuel flow expected value.
9. auxiliary power unit according to claim 1 starts acceleration fuel flow controlling method, it is characterized in that: described step 1.3) after calculating fuel flow bid value, also to recycle a minimum fuel flow and lower amplitude limit is carried out to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926015.5A CN105569847B (en) | 2015-12-11 | 2015-12-11 | Auxiliary power unit, which is started, accelerates fuel flow control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926015.5A CN105569847B (en) | 2015-12-11 | 2015-12-11 | Auxiliary power unit, which is started, accelerates fuel flow control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105569847A true CN105569847A (en) | 2016-05-11 |
| CN105569847B CN105569847B (en) | 2017-10-24 |
Family
ID=55880380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510926015.5A Active CN105569847B (en) | 2015-12-11 | 2015-12-11 | Auxiliary power unit, which is started, accelerates fuel flow control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105569847B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223143A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of accessory power system electronic controller exhaust valve assemblies control method |
| CN108561232A (en) * | 2017-12-07 | 2018-09-21 | 中国航空工业集团公司西安航空计算技术研究所 | The igniting fuel flow control method of auxiliary power unit point circle fuel feeding |
| CN109441645A (en) * | 2018-12-11 | 2019-03-08 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of fuel flow control method starting auxiliary power unit APU |
| CN110748421A (en) * | 2019-11-12 | 2020-02-04 | 中国航发南方工业有限公司 | Over-rotation protection method and device |
| CN110939519A (en) * | 2019-11-20 | 2020-03-31 | 中国人民解放军海军工程大学 | Current anti-integral saturation PI control method for starter of micro gas turbine |
| CN111693180A (en) * | 2020-05-27 | 2020-09-22 | 中国航空工业集团公司西安航空计算技术研究所 | Exhaust temperature over-temperature fault detection method for auxiliary power system |
| CN113404596A (en) * | 2021-06-15 | 2021-09-17 | 西安交通大学 | Fusion control method for aircraft engine acceleration control plan |
| EP4114738A4 (en) * | 2020-03-05 | 2024-04-10 | Yaborã Indústria Aeronáutica S.A. | Systems and methods for defining apu steady state speed according to the aircraft operational conditions |
-
2015
- 2015-12-11 CN CN201510926015.5A patent/CN105569847B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223143A (en) * | 2016-12-14 | 2018-06-29 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of accessory power system electronic controller exhaust valve assemblies control method |
| CN108561232A (en) * | 2017-12-07 | 2018-09-21 | 中国航空工业集团公司西安航空计算技术研究所 | The igniting fuel flow control method of auxiliary power unit point circle fuel feeding |
| CN108561232B (en) * | 2017-12-07 | 2020-06-09 | 中国航空工业集团公司西安航空计算技术研究所 | Ignition fuel flow control method for sub-circle oil supply of auxiliary power device |
| CN109441645A (en) * | 2018-12-11 | 2019-03-08 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of fuel flow control method starting auxiliary power unit APU |
| CN110748421A (en) * | 2019-11-12 | 2020-02-04 | 中国航发南方工业有限公司 | Over-rotation protection method and device |
| CN110748421B (en) * | 2019-11-12 | 2021-04-13 | 中国航发南方工业有限公司 | Over-rotation protection method and device |
| CN110939519A (en) * | 2019-11-20 | 2020-03-31 | 中国人民解放军海军工程大学 | Current anti-integral saturation PI control method for starter of micro gas turbine |
| CN110939519B (en) * | 2019-11-20 | 2021-05-14 | 中国人民解放军海军工程大学 | Current anti-integral saturation PI control method for starter of micro gas turbine |
| EP4114738A4 (en) * | 2020-03-05 | 2024-04-10 | Yaborã Indústria Aeronáutica S.A. | Systems and methods for defining apu steady state speed according to the aircraft operational conditions |
| CN111693180A (en) * | 2020-05-27 | 2020-09-22 | 中国航空工业集团公司西安航空计算技术研究所 | Exhaust temperature over-temperature fault detection method for auxiliary power system |
| CN113404596A (en) * | 2021-06-15 | 2021-09-17 | 西安交通大学 | Fusion control method for aircraft engine acceleration control plan |
| CN113404596B (en) * | 2021-06-15 | 2022-05-06 | 西安交通大学 | Fusion control method for aircraft engine acceleration control plan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105569847B (en) | 2017-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105569847A (en) | Auxiliary power unit starting acceleration fuel oil flow control method | |
| US10773816B2 (en) | Single lever turboprop control systems and methods utilizing torque-based and power-based scheduling | |
| CN104884769B (en) | Method and system for starting an aircraft turboengine | |
| US10221778B2 (en) | Engine control device | |
| US6688283B2 (en) | Engine start strategy | |
| US10315653B2 (en) | Vehicle running control apparatus | |
| BR112013021642A2 (en) | method of operating a vehicle equipped with a pneumatic reinforcement system | |
| US10526981B2 (en) | Engine control device | |
| CN105378251A (en) | Method for adapting an injection quantity | |
| US20140174403A1 (en) | Fuel supplier | |
| US20070129856A1 (en) | Control apparatus and control method for aircraft | |
| US20200018227A1 (en) | Method for controlling a turbocharging system | |
| US20060272611A1 (en) | System and process for controlling the fuel injection of a diesel engine of a motor vehicle | |
| CN104859655B (en) | A kind of vehicle sliding fuel-economizing progress control method and vehicle control system | |
| SE537313C2 (en) | Method and system for controlling an internal combustion engine through control of combustion in an internal combustion chamber during the current combustion cycle | |
| CN105229288A (en) | For manipulating the method for camshaft | |
| JP2005171893A (en) | Supercharging pressure control device | |
| JP6395167B1 (en) | Control device for internal combustion engine | |
| KR20150134343A (en) | Method for preparing an acceleration process of an internal combustion engine | |
| JP2004052768A (en) | Control method and device for vehicle drive unit | |
| US11486316B2 (en) | Method and system for adjusting a variable geometry mechanism | |
| JP5436608B2 (en) | General-purpose engine speed control device and method | |
| CN103392059A (en) | Turbomachine comprising a privileged injection device and corresponding injection method | |
| JP2006307676A (en) | Fuel control device and operating method of diesel engine for power generation | |
| JP6983529B2 (en) | Ship control devices, ships, ship control methods and programs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |