CN103162599A - Exhaust pipe deflection angle calibration method - Google Patents
Exhaust pipe deflection angle calibration method Download PDFInfo
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- CN103162599A CN103162599A CN2011104239319A CN201110423931A CN103162599A CN 103162599 A CN103162599 A CN 103162599A CN 2011104239319 A CN2011104239319 A CN 2011104239319A CN 201110423931 A CN201110423931 A CN 201110423931A CN 103162599 A CN103162599 A CN 103162599A
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Abstract
Provided is an exhaust pipe deflection angle calibration method. When a measured pipe is fixed through a exhaust pipe angel calibration device, the exhaust pipe deflection angle calibration method is conducted in sequence according to the following requirements: (1) firstly, choosing positions of measurement points on the measured exhaust pipe; (2) adopting a measuring instrument to respectively conduct position measurement of space points before deflection aiming at the chosen measuring points; (3) adopting a measuring instrument to respectively conduct space trend track of the measured points in the deflection process, and finding a motion curve function relation; (4) adopting the measuring instrument to respectively conduct space position measurement of the measured points after deflection at a deflection angle of n degrees, and obtaining (x2, y2, z2) and (x2', y2', z2'); (5) utilizing a motion curve trail function equation of the measured points which are marked with targets to calculate and determine an average value of an actual motion trail length; (6) and solving an average value of the actually-measured motion trail chord length, fitting in with a theory model, and completing precise calibration of a novel exhaust deflection angle. The exhaust pipe deflection angle calibration method solves the technical bottleneck of regulating exhaust pipe vector deflection angle precise calibration and makes up for a technical gap.
Description
Technical field
The present invention relates to science, a kind of jet pipe deflection angle scaling method is provided especially.
Background technology
Fast development along with aero engine technology, China has marched toward advanced aero engine development ranks, bring thus the gordian technique in more advanced persons' engine manufacturing technology field to need to break through, novel jet pipe deflection angle scaling method and servicing unit thereof with Thrust Vectoring Technology are that certain development engine is badly in need of one of technical bottleneck that solves.Aeromotor did not have the vectored thrust technology in the past, and there is not deflection in its jet pipe, rarely had the deflection vector footmark to decide the technical information record.The aeromotor model classification that has at present the vectored thrust technology abroad is few, all can follow without clear and definite technical scheme in data at home and abroad.Flap is the dynamic chain type structure, actual deflection is partly the diffuser of adjustment sheet chain, the adjustment sheet chain is all moving in deflection, in the jet pipe debugging along with the motion cheek of adjustment sheet chain and cave diameter all changing, there is no fixedly measuring tool of benchmark, what moreover we need to measure is the axle center deflection angle, and jet pipe shaft core position incorporeity is hollow-core construction, even the rigidity measuring tool is arranged, to lose the axle center equally in the jet pipe yaw motion, cause measurement data inaccurate.So the method with design rigidity measuring tool or employing contact measurement jet pipe deflection angle does not have achievement in research temporarily.Correlation technique is blank project.
People expect to obtain the good jet pipe deflection angle scaling method of a kind of technique effect.
Summary of the invention
The purpose of this invention is to provide the good jet pipe deflection angle scaling method of a kind of technique effect.
A kind of jet pipe deflection angle of the present invention scaling method is characterized in that: after tested jet pipe is fixing with jet pipe deflection angle caliberating device, carry out in the requsst listed below successively:
1. at first in selected measurement point position (being the target fixed position) on tested jet pipe: the jet pipe diffuser all can the basis of free deflection in the circumferential 360 ° of scopes in position angle on, Theoretical Design deflection angle scope is between 0 ° ~ 20 °, we arbitrarily selected n in the circumferential h group deflection angle of crossing under symmetrical 180 degree any two points position angles, axle center of jet pipe diffuser, amount to n * h angle; And the selected measurement point (measured point, that is monumented point) of mark: the target ball is sticked at the measured point as target; Described h group deflection angle is all again between 0 °-20 °; The span of n, h is 2-20;
2. the position measurement of (deflection angle is zero degree) spatial point before adopting three-dimensional laser tracking measurement instrument to carry out deflection respectively for selected measurement point: carry out spatial point and measure, 0 ° of instruction of the given deflection angle of jet pipe tilt controller, deflection angle obtains point (x when being zero degree
1, y
1, z
l) and (x
1', y
1', z
l');
3. adopt three-dimensional laser tracking measurement instrument to carry out respectively in deflection the measurement point space and move towards to follow the tracks of, and find out its curve movement funtcional relationship;
By the given any deflection angle instruction respectively of jet pipe deflection control device, the movement locus of the target of measurement point sign when following the tracks of jet pipe deflection; Conclusion learns that this movement locus is to move on spherical surface body, deflected trajectory is followed the spherical function equation:
f(x, y, z)=(dx
2+dy
2+dz
2)
1/2 (1)
(1) x in formula, y, z are the pose variablees of measurement point data in coordinate system;
4. adopt three-dimensional laser tracking measurement instrument to carry out respectively measurement point spatial position measuring after deflection, deflection angle is n when spending, and obtains point (x
2, y
2, z
2) and (x
2', y
2', z
2'), referring to Fig. 2, Fig. 3;
5. utilize mark the movement locus functional equation of measurement point of target calculate, obtain the long mean value of actual motion track; Measurement point actual motion course length is:
X in above two formulas, y, z, x ', y ', z ' they are the pose variable of measured data in coordinate system, find the solution the mean motion track long (being approximately mean chord) of measurement point with this:
6. find the solution actual measurement movement locus chord length mean value and with the theoretical model match, namely complete the accurate calibration of novel jet pipe deflection angle:
（5）
Wherein f (x, y, z) is eyeball mean motion course length (being approximately mean chord); L is novel jet pipe deflector height; (f (x, y, z)/L) is the actual measurement angle value to 2arcsin; α
ReasonIt is given point of theory value; α
minIt is value range, i.e. a tolerance value; Exceed α
minRange section is the numerical value that needs correction.
Jet pipe deflection angle scaling method of the present invention, the preferred requirement is:
The measuring instrument that uses in described jet pipe deflection angle scaling method is three-dimensional laser tracking measurement instrument specifically.
Be used for the jet pipe deflection angle caliberating device of auxiliary fixing tested jet pipe in described jet pipe deflection angle scaling method; Specifically be fixed on casing 1, it is constructed as follows: the pressurized strut 2 of A9 ring, turn to control loop 3, pull bar 4, Divergent flap 5, the pressurized strut 6 of A8 ring, convergence adjustment sheet cam 7, convergence adjustment sheet 8, convergence regulating ring 9; Wherein: the pressurized strut 2 of A9 ring, turn to control loop 3, pull bar 4, Divergent flap 5 four to be connected in series component units one, unit one along the circumferential direction all be furnished with 3 and overlap;
A8 ring pressurized strut 6 and convergence regulating ring 9 are connected in series component units two, unit two along the circumferential direction all be furnished with 3 and overlap;
Each convergence regulating ring 9 and convergence adjustment sheet cam 7, convergence adjustment sheet 8 orders corresponding with it are connected in series, convergence adjustment sheet cam 7, convergence adjustment sheet 8 component units three;
The part of the pressurized strut 2 of A9 ring, the pressurized strut 6 of A8 ring, convergence adjustment sheet cam 7 all is fixed on casing 1.
Further preferred requirement: unit one, unit two all along the circumferential direction are evenly arranged and respectively have 3 to overlap.
Jet pipe deflection angle caliberating device fills effective to gripping of tested jet pipe, be convenient to carry out the action of Three-Dimensional Dynamic spatial deflection, helps to carry out the accurate and Quick Measurement of jet pipe deflection angle.
The at first selected measurement point of the present invention is placed and the fixed laser target, adopt three-dimensional laser tracking measurement instrument to carry out the space tracking measurement to target, follow the tracks of target in the angle debugging of jet pipe deflection vector, go out the actual occurrence value of jet pipe deflection angle with jet pipe vector angle change curve function calculation, carry out best-fit with theoretical model in the same coordinate system, namely in realizing the jet pipe debug process in the Measurement accuracy of deflection vector angle, complete jet pipe actual vector deflection angle and theoretical value accurate calibration, to satisfy the debugging technique conditional request.Solve debugging jet pipe deflection vector angle accurate calibration technical bottleneck, filled up the blank of technique; Now by the through engineering approaches application verification, reach technical requirement fully.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
Fig. 1 is jet pipe deflection angle caliberating device structure diagram;
The novel jet pipe monumented point of Fig. 2 measuring position schematic top plan view;
During 48 ° at the position angle, 228 ° of Fig. 3, three-dimensional laser tracking measurement instrument carries out tracking measurement, its angle of deflection three-dimensional trend schematic diagram to novel jet pipe subscript will point target deflected trajectory.
Embodiment
Embodiment 1
With reference to accompanying drawing 1-3, describe novel jet pipe diffuser deflection angle scaling method in detail.
1. selected measurement point position is the target fixed position, referring to Fig. 2.
The jet pipe diffuser can rotate freely in the scope of 360 °, position angle, Theoretical Design deflection angle scope between 0 ° ~ 20 °, we be selected under 0 °, 180 °, 48 °, 228 °, 96 °, 276 °, 144 °, 324 °, eight position angles 5 °, 10 °, 15 °, 20 ° of four groups of deflection angles totally 32 angles carry out the accurate calibration of jet pipe drift angle.
2. before adopting three-dimensional laser tracking measurement instrument to carry out deflection respectively, (deflection angle is zero degree) spatial point is measured; Referring to Fig. 2, Fig. 3.
Be chosen in fixedly target of jet pipe diffuser 48 ° and 228 °, circumferential position angle monumented point, the row space point measurement of going forward side by side, by 0 ° of instruction of the given deflection angle of novel jet pipe tilt controller, deflection angle obtains point (x when being zero degree
1, y
1, z
l) and (x
1', y
1', z
l').
3. adopt three-dimensional laser tracking measurement instrument to carry out respectively in deflection landmark space and move towards to follow the tracks of, find out its curve movement funtcional relationship.Referring to Fig. 2, Fig. 3.
By respectively 5 °, 10 °, 15 °, the 20 ° instructions of given deflection angle of jet pipe tilt controller, when following the tracks of jet pipe deflection, the movement locus of monumented point target is to move on spherical surface body, shows that deflected trajectory follows the spherical function equation.Referring to Fig. 3.
f(x, y, z)=(dx
2+dy
2+dz
2)
1/2 (1)
Wherein: x, y, z are the pose variable of measured data in coordinate system.
4. at jet pipe diffuser 48 ° and 228 °, circumferential position angle monumented point, after 5 °, 10 °, 15 °, 20 ° of given deflection angle instructions, adopt three-dimensional laser tracking measurement instrument to carry out deflection rear space point measurement to the monumented point target, obtain point (x
2, y
2, z
2) and (x
2', y
2', z
2').Referring to Fig. 2, Fig. 3;
5. utilize target motion lopcus function equation to calculate, obtain the long mean value of monumented point actual motion track, referring to Fig. 3;
Target point actual motion course length formula:
Wherein: x, y, z, x ', y ', z ' they are the pose variable of measured data in coordinate system, find the solution eyeball mean motion course length with this.
The mean motion track is long:
Get the eyeball movement locus by (2) long:
The long formula of mean motion track:
Get eyeball mean motion course length by (3)
6. find the solution mean value and the theoretical model best-fit of actual measurement movement locus chord length, namely complete the accurate calibration of jet pipe deflection angle:
F (x, y, z) eyeball mean motion course length wherein, L is jet pipe deflector height;
(f (x, y, z)/L) is the actual measurement angle value to 2arcsin; α
ReasonIt is given point of theory value; α
minIt is value range, i.e. a tolerance value.Exceed α
minRange section is the numerical value that needs correction.
32 eyeball deflection angle calibration values of table 1 (unit: degree)
Facts have proved, the described method of the present embodiment is terse, and is scientific and reasonable, and in practical application, measuring accuracy is high, and cost is low, and efficient is high.
It is emphasized that: above-mentioned illustrative example is limited, but is not equal to whole ranges of application of including this invention, and any innovation and creation that do not exceed in connotation of the present invention all fall within the scope of protection of the present invention.
A kind of jet pipe deflection angle scaling method: after tested jet pipe is fixing with jet pipe deflection angle caliberating device, carry out in the requsst listed below successively:
1. at first in selected measurement point position (being the target fixed position) on tested jet pipe: the jet pipe diffuser all can the basis of free deflection in the circumferential 360 ° of scopes in position angle on, Theoretical Design deflection angle scope is between 0 ° ~ 20 °, we arbitrarily selected n in the circumferential h group deflection angle of crossing under symmetrical 180 degree any two points position angles, axle center of jet pipe diffuser, amount to n * h angle; And the selected measurement point (measured point, that is monumented point) of mark: the target ball is sticked at the measured point as target; Described h group deflection angle is all again between 0 °-20 °; The span of n, h is 2-20;
2. the position measurement of (deflection angle is zero degree) spatial point before adopting three-dimensional laser tracking measurement instrument to carry out deflection respectively for selected measurement point: carry out spatial point and measure, 0 ° of instruction of the given deflection angle of jet pipe tilt controller, deflection angle obtains point (x when being zero degree
1, y
1, z
l) and (x
1', y
1', z
l');
3. adopt three-dimensional laser tracking measurement instrument to carry out respectively in deflection the measurement point space and move towards to follow the tracks of, and find out its curve movement funtcional relationship;
By the given any deflection angle instruction respectively of jet pipe deflection control device, the movement locus of the target of measurement point sign when following the tracks of jet pipe deflection; Conclusion learns that this movement locus is to move on spherical surface body, deflected trajectory is followed the spherical function equation:
f(x, y, z)=(dx
2+dy
2+dz
2)
1/2 (1)
(1) x in formula, y, z are the pose variablees of measurement point data in coordinate system;
4. adopt three-dimensional laser tracking measurement instrument to carry out respectively measurement point spatial position measuring after deflection, deflection angle is n when spending, and obtains point (x
2, y
2, z
2) and (x
2', y
2', z
2'), referring to Fig. 2, Fig. 3;
5. utilize mark the movement locus functional equation of measurement point of target calculate, obtain the long mean value of actual motion track; Measurement point actual motion course length is:
X in above two formulas, y, z, x ', y ', z ' they are the pose variable of measured data in coordinate system, find the solution the mean motion track long (being approximately mean chord) of measurement point with this:
6. find the solution actual measurement movement locus chord length mean value and with the theoretical model match, namely complete the accurate calibration of novel jet pipe deflection angle:
Wherein f (x, y, z) is eyeball mean motion course length (being approximately mean chord); L is novel jet pipe deflector height; (f (x, y, z)/L) is the actual measurement angle value to 2arcsin; α
ReasonIt is given point of theory value; α
minIt is value range, i.e. a tolerance value; Exceed α
minRange section is the numerical value that needs correction.
Be used for the jet pipe deflection angle caliberating device of auxiliary fixing tested jet pipe in described jet pipe deflection angle scaling method; Specifically be fixed on casing 1, it is constructed as follows: the pressurized strut 2 of A9 ring, turn to control loop 3, pull bar 4, Divergent flap 5, the pressurized strut 6 of A8 ring, convergence adjustment sheet cam 7, convergence adjustment sheet 8, convergence regulating ring 9; Wherein: the pressurized strut 2 of A9 ring, turn to control loop 3, pull bar 4, Divergent flap 5 four to be connected in series component units one, unit one along the circumferential direction all be furnished with 3 and overlap;
A8 ring pressurized strut 6 and convergence regulating ring 9 are connected in series component units two, unit two along the circumferential direction all be furnished with 3 and overlap;
Each convergence regulating ring 9 and convergence adjustment sheet cam 7, convergence adjustment sheet 8 orders corresponding with it are connected in series, convergence adjustment sheet cam 7, convergence adjustment sheet 8 component units three;
The part of the pressurized strut 2 of A9 ring, the pressurized strut 6 of A8 ring, convergence adjustment sheet cam 7 all is fixed on casing 1.
Jet pipe deflection angle caliberating device fills effective to gripping of tested jet pipe, be convenient to carry out the action of Three-Dimensional Dynamic spatial deflection, helps to carry out the accurate and Quick Measurement of jet pipe deflection angle.
The at first selected measurement point of the present embodiment is placed and the fixed laser target, adopt three-dimensional laser tracking measurement instrument to carry out the space tracking measurement to target, follow the tracks of target in the angle debugging of jet pipe deflection vector, go out the actual occurrence value of jet pipe deflection angle with jet pipe vector angle change curve function calculation, carry out best-fit with theoretical model in the same coordinate system, namely in realizing the jet pipe debug process in the Measurement accuracy of deflection vector angle, complete jet pipe actual vector deflection angle and theoretical value accurate calibration, to satisfy the debugging technique conditional request.Solve debugging jet pipe deflection vector angle accurate calibration technical bottleneck, filled up the blank of technique; Now by the through engineering approaches application verification, reach technical requirement fully.
Claims (3)
1. jet pipe deflection angle scaling method is characterized in that: after tested jet pipe is fixing with jet pipe deflection angle caliberating device, carry out in the requsst listed below successively:
1. at first in selected measurement point position on tested jet pipe: selected n in the circumferential h group deflection angle of crossing under symmetrical 180 degree any two points position angles, axle center of jet pipe diffuser, amount to n * h angle; And the selected measurement point of mark: the target ball is sticked at the measured point as target; Described h group deflection angle is all again between 0 °-20 °; The span of n, h is 2-20;
2. adopt measuring instrument to carry out respectively the position measurement of deflection front space point for selected measurement point: carry out spatial point and measure, 0 ° of instruction of the given deflection angle of jet pipe tilt controller, deflection angle obtains point (x when being zero degree
1, y
1, z
l) and (x
1', y
1', z
l');
3. adopt measuring instrument to carry out respectively in deflection the measurement point space and move towards to follow the tracks of, and find out its curve movement funtcional relationship;
By the given any deflection angle instruction respectively of jet pipe deflection control device, the movement locus of the target of measurement point sign when following the tracks of jet pipe deflection; Conclusion learns that this movement locus is to move on spherical surface body, deflected trajectory is followed the spherical function equation:
f(x, y, z)=(dx
2+dy
2+dz
2)
1/2 (1)
(1) x in formula, y, z are the pose variablees of measurement point data in coordinate system;
4. adopt measuring instrument to carry out respectively measurement point spatial position measuring after deflection, deflection angle is n when spending, and obtains point (x
2, y
2, z
2) and (x
2', y
2', z
2');
5. utilize mark the movement locus functional equation of measurement point of target calculate, obtain the long mean value of actual motion track; Measurement point actual motion course length is:
X in above two formulas, y, z, x ', y ', z ' they are the pose variable of measured data in coordinate system, and be long with this mean motion track of finding the solution measurement point:
6. find the solution actual measurement movement locus chord length mean value and with the theoretical model match, namely complete the accurate calibration of novel jet pipe deflection angle:
Wherein f (x, y, z) is eyeball mean motion course length; L is novel jet pipe deflector height; (f (x, y, z)/L) is the actual measurement angle value to 2arcsin; α
ReasonIt is given point of theory value; α
minIt is value range, i.e. a tolerance value; Exceed α
minRange section is the numerical value that needs correction.
2. according to the described jet pipe deflection angle of claim 1 scaling method, it is characterized in that: the measuring instrument that uses in described jet pipe deflection angle scaling method is three-dimensional laser tracking measurement instrument specifically.
3. according to the described jet pipe deflection angle of claim 2 scaling method, it is characterized in that: the jet pipe deflection angle caliberating device that is used for auxiliary fixing tested jet pipe in described jet pipe deflection angle scaling method; Specifically be fixed on casing (1), it is constructed as follows: the pressurized strut (2) of A9 ring, turn to control loop (3), pull bar (4), Divergent flap (5), the pressurized strut (6) of A8 ring, convergence adjustment sheet cam (7), convergence adjustment sheet (8), convergence regulating ring (9); Wherein: the pressurized strut (2) of A9 ring, turn to control loop (3), pull bar (4), Divergent flap (5) four to be connected in series component units one, unit one along the circumferential direction all be furnished with 3 and overlap;
The pressurized strut (6) of A8 ring and convergence regulating ring (9) are connected in series component units two, unit two along the circumferential direction all be furnished with 3 and overlap;
Each convergence regulating ring (9) and convergence adjustment sheet cam (7), convergence adjustment sheet (8) order corresponding with it are connected in series, convergence adjustment sheet cam (7), convergence adjustment sheet (8) component units three;
Divergent flap (5) and convergence adjustment sheet (8) connect one to one;
The part of the pressurized strut (2) of A9 ring, the pressurized strut (6) of A8 ring, convergence adjustment sheet cam (7) all is fixed on casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110423931.9A CN103162599B (en) | 2011-12-18 | A kind of exhaust pipe deflection angle calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110423931.9A CN103162599B (en) | 2011-12-18 | A kind of exhaust pipe deflection angle calibration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103162599A true CN103162599A (en) | 2013-06-19 |
| CN103162599B CN103162599B (en) | 2016-12-14 |
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| CN105067276A (en) * | 2015-07-31 | 2015-11-18 | 中国人民解放军信息工程大学 | Engine thrust line measurement method |
| CN105508080A (en) * | 2016-03-02 | 2016-04-20 | 清华大学 | Three-dimensional printing based three-bearing swivel duct nozzle structure |
| CN111859749A (en) * | 2020-07-15 | 2020-10-30 | 西安交通大学 | Method for determining jet flow injection angle based on N-S equation |
| CN113108676A (en) * | 2021-04-13 | 2021-07-13 | 哈尔滨电机厂有限责任公司 | Nozzle included angle measuring device of pelton turbine |
| CN115077921A (en) * | 2022-07-21 | 2022-09-20 | 中国航发四川燃气涡轮研究院 | Binary vector nozzle engine outfield test calibration and ground simulation system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067276A (en) * | 2015-07-31 | 2015-11-18 | 中国人民解放军信息工程大学 | Engine thrust line measurement method |
| CN105067276B (en) * | 2015-07-31 | 2017-06-06 | 中国人民解放军信息工程大学 | A kind of motor power line measuring method |
| CN105508080A (en) * | 2016-03-02 | 2016-04-20 | 清华大学 | Three-dimensional printing based three-bearing swivel duct nozzle structure |
| CN105508080B (en) * | 2016-03-02 | 2017-07-07 | 清华大学 | A kind of three bearing thrust vector spray structure types based on 3 D-printing |
| CN111859749A (en) * | 2020-07-15 | 2020-10-30 | 西安交通大学 | Method for determining jet flow injection angle based on N-S equation |
| CN111859749B (en) * | 2020-07-15 | 2023-05-26 | 西安交通大学 | N-S equation-based jet injection angle determination method |
| CN113108676A (en) * | 2021-04-13 | 2021-07-13 | 哈尔滨电机厂有限责任公司 | Nozzle included angle measuring device of pelton turbine |
| CN113108676B (en) * | 2021-04-13 | 2023-03-10 | 哈尔滨电机厂有限责任公司 | Water bucket type water turbine nozzle included angle measuring device |
| CN115077921A (en) * | 2022-07-21 | 2022-09-20 | 中国航发四川燃气涡轮研究院 | Binary vector nozzle engine outfield test calibration and ground simulation system |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |