CN109115510A - A kind of Time series analysis and its accidentally method for determining difference - Google Patents
A kind of Time series analysis and its accidentally method for determining difference Download PDFInfo
- Publication number
- CN109115510A CN109115510A CN201811163636.2A CN201811163636A CN109115510A CN 109115510 A CN109115510 A CN 109115510A CN 201811163636 A CN201811163636 A CN 201811163636A CN 109115510 A CN109115510 A CN 109115510A
- Authority
- CN
- China
- Prior art keywords
- frame
- force
- dynamometry
- calibrated
- connect
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/12—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring axial thrust in a rotary shaft, e.g. of propulsion plants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A kind of Time series analysis, including six square phase test bay and vector force loading device, six square phase test bay include moving frame, determine frame, dynamometry component and calibrated in situ device；Dynamometry component and calibrated in situ device be it is multiple, moving frame is connect by multiple dynamometry components and calibrated in situ device with frame is determined, and vector force loading device, which is fixed on, to be determined to connect on frame and with moving frame.Time series analysis of the invention realizes the measurement of six square phase vectorial force and the determination of error, structure are simple.
Description
Technical field
The present invention relates to thrust measurement technical field, especially a kind of Time series analysis and its accidentally method for determining difference.
Background technique
Engine test and measuring technology are the important components of Solid Rocket Propulsion Technology, and thrust vectoring bias is then started
An important parameter for needing to measure in machine test and test.It is eccentric to study motor power vector, needs to do largely repeatedly
Test, if to be all put into flight test be impossible for these tests.Main cause be flight test is at high cost, the period is long,
Information gain amount is small, it is adventurous, need to expend a large amount of manpower.This just needs to carry out engines ground test run test, hair
Motivation ground experiment refers on the ground according to specific condition and environmental requirement, carries out static test to system, obtains description
The performance indexes information of system, to solve the critical issue during motor power eccentric testing, however existing skill
In art, maturity there is no for the experimental facilities of the experimental facilities of engine vectorial force, especially engine six square phase vectorial force
Technology, meanwhile, six square phase vectored thrust measuring technique in the prior art, especially horizontal six square phase vectored thrust measures skill
Art does not consider the gravity of engine or good method there is no to consider that the gravity of engine influences, leads to measurement result
There are large errors.
In addition, the test of vector engine needs vectored thrust test bay, to guarantee vectored thrust test bay test data
Accuracy, need to carry out dependent correction work.The difference maximum compared to axial test bay of vector test cell calibration is vector
The simulation thrust applied when test cell calibration is space vector power, and the simulation thrust that when axial test cell calibration applies is single side
To thrust.Domestic existing vector platform collimation technique is limited only to individually calibrate single component, and this method is merely able to
The simulation thrust for applying single direction respectively along three directions, can not simulate space vector power.Apply single direction and simulates thrust
Obtained calibration result cannot directly illustrate the performance of vectored thrust measuring system, and be not able to satisfy that vectored thrust accurately measures wants
It asks.In order to obtain accurate thrust test result in vector engine test run, engine performance is correctly assessed, is needed to vector
Test bay applies space vector power to simulate the thrust of vector engine, to carry out thrust calibration to vector test bay, grasps
Interaction between force snesor, however, structure is complicated for the vector force loading device of the prior art, complicated structure causes to tire out
Count the increasing of error.
Summary of the invention
Technology of the invention solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of Time series analysis and its mistake
Method for determining difference.
The technical solution of the invention is as follows: a kind of Time series analysis, including six square phase test bay and vectorial force load
Device, six square phase test bay include moving frame, determine frame, dynamometry component and calibrated in situ device；Dynamometry component and calibrated in situ device
Be it is multiple, moving frame is connect by multiple dynamometry components and calibrated in situ device with frame is determined, and it is fixed that vector force loading device is fixed on
It is connect on frame and with moving frame.
Further, moving frame includes adapter frame, centre frame, stiffening plate and truss；Along the axial direction of testpieces, switching
Frame, truss and centre frame are fixedly connected sequentially, and stiffening plate is mounted on testpieces；Adapter frame includes before being fixedly connected sequentially
Plate, load pipe and back plate, back plate are connect with truss, and center is fixed on foreboard；Determining frame includes horizontal base portion, load portion and
Mounting portion；Horizontal base portion includes horizontal base, horizontal base plate, the first support base and the second support base；Horizontal base plate is fixed on
On horizontal base, the first support base and the second support base are fixed on horizontal base, and the first support base is 2, relative to level
The length direction of substrate is symmetrical arranged, and the second support base is 2, and the length direction relative to horizontal base plate is symmetrical arranged；Load
Portion includes load wall, heavy frame, force-bearing base mounting base and force-bearing base；Load wall is fixedly connected with horizontal base one end, force-bearing base
Mounting base one end is fixedly connected with horizontal base plate, and the other end is fixedly connected with force-bearing base, heavy frame one end and the fixed company of load wall
It connects, the other end is fixedly connected with force-bearing base；Mounting portion includes the first portal frame and the second portal frame, the first portal frame and first
Support seat is fixedly connected, and the second portal frame is fixedly connected with the second support base；Along the length direction of horizontal base, load wall, load
Frame, force-bearing base, the first portal frame and the second portal frame are arranged successively；Dynamometry component and calibrated in situ device are multiple；Switching
Center on frame is connect by a dynamometry component with force-bearing base；Pass through a calibrated in situ device and the first dragon at the top of back plate
The crossbeam of door frame connects, and back plate one side is connect by a dynamometry component with a column of the first portal frame, another side
It is connect by a calibrated in situ device with another column of the first portal frame；The bottom of back plate by dynamometry component with
Horizontal base plate connection, all calibrated in situ devices connecting with back plate and dynamometry component are on a vertical plane；The one of centre frame
Side connect by a dynamometry component with a column of the second portal frame, another side pass through a calibrated in situ device and
Another column of second portal frame connects, and the bottom of centre frame passes through 2 dynamometry components and 1 calibrated in situ device and level
Substrate connection, 2 dynamometry components for connecting centre frame bottom and horizontal base plate are located at connection centre frame bottom and horizontal base plate
The two sides of calibrated in situ device, all calibrated in situ devices connecting with centre frame and dynamometry component are on a vertical plane；Arrow
It measures one's own ability loading device, including mounting base, vectorial force loads cylinder, fixed pulley, vector force loading device load cell and wirerope；
Mounting base, which is fixed on, determines on frame, and vectorial force load cylinder and fixed pulley are fixed in mounting base, and wirerope one end is fixed in moving frame,
The other end is fixed on vectorial force load cylinder, and wirerope bypasses fixed pulley, and load cell is arranged on a steel cord.
Further, wirerope includes first segment and second segment, and first segment one end of wirerope is fixed on vectorial force load
On cylinder, the other end is connect with vector force loading device load cell one end, and second segment one end of wirerope is fixed in moving frame,
The other end is connect with the vector force loading device load cell other end, and the first segment of wirerope bypasses fixed pulley.
Further, dynamometry component include sequentially connected, the first connecting plate, the first Universal flexible part, load cell,
Second Universal flexible part and the second connecting plate.
Further, calibrated in situ device includes sequentially connected hydraulic loading device, force snesor and calibration hydraulic cylinder.
Further, flowing hole is provided in the first portal frame, the second portal frame and force-bearing base mounting base.
Further, the load cell for connecting the dynamometry component of the center and force-bearing base in adapter frame is pressure sensing
Device.
Further, after connecting the dynamometry component of the one side of centre frame and a column of the second portal frame and connecting
The load cell of the dynamometry component of one column of plate one side and the first portal frame is tension compression bidirectional load cell.
Further, 2 dynamometry components of centre frame bottom and horizontal base plate are connected and connect back plate bottom and level
The load cell of the dynamometry component of substrate is tension compression bidirectional load cell.
Using the mistake method for determining difference of above-mentioned Time series analysis, include the following steps:
S1), apply vectored thrust；
Mounting base is fixed on by predetermined position and is determined on frame, the side of vectorial force and pr-set vector thrust that wirerope is provided
To coincidence, axial displacement is generated by vectorial force load cylinder, is applied by the direction that fixed pulley is driven change active force to moving frame
Add vectorial force, and the force value of the vectorial force applied by the measurement of vector force loading device load cell, the vector that moving frame is subject to
Power is the vectored thrust simulated；
S2), six square phase model is constructed；
O-XYZ rectangular coordinate system is constructed, with the axis of testpieces and all calibrated in situ devices connecting with back plate and survey
Vertical plane where power component is coordinate origin O, and using the axis of testpieces as X-axis, Y-axis crosses origin O and X-axis intersects vertically simultaneously
It is parallel to the horizontal plane, Z axis crosses origin O and intersects vertically with X-axis and parallel with vertical plane；Regulation dynamometry component is " just " by pulling force,
Be pressurized is " negative "；
S3), according to six square phase model, the big of the vectored thrust of testpieces is calculated by equations of configuration of equilibrium of spatial force series
Small, eccentric angle and eccentricity；The equations of configuration of equilibrium of spatial force series are as follows:
In formula: F1And F2The dynamometry value of 2 dynamometry components of centre frame bottom and horizontal base plate is respectively connected, unit is
N；F3For the dynamometry value of the dynamometry component of a column of the one side and the second portal frame of connection centre frame, unit N；F4For
Connect the dynamometry value of the dynamometry component of back plate bottom and horizontal base plate, unit N；F5For connection back plate one side and first gantry
The dynamometry value of the dynamometry component of one column of frame, unit N；F6For the dynamometry of center and force-bearing base in connection adapter frame
The dynamometry value of component, unit N；
P is the size of vectored thrust, unit N；
Px、PyAnd PzRespectively for vectored thrust in the component of tri- coordinate directions of X, Y, Z, the unit of quantitative value is N；
Mx、My、MzRespectively for resultant moment in the component of tri- coordinate directions of X, Y, Z, the unit of quantitative value is Nm, is pressed
Right-hand rule determines " just " direction；
W is the gravity of testpieces, and unit N is given value；
LmFor testpieces center of gravity and the vertical plane where all calibrated in situ devices and dynamometry component being connect with back plate
Horizontal distance, unit m are given value；
L is that the vertical plane where all calibrated in situ devices and dynamometry component connecting with back plate connects with all with centre frame
The distance of vertical plane where the calibrated in situ device and dynamometry component that connect, unit m are given value；
R connects centre frame on the vertical plane where all calibrated in situ devices and dynamometry component connecting with centre frame
The half of the horizontal distance of 2 dynamometry components of bottom and horizontal base plate, unit m are given value；
ypAnd zpRespectively vectored thrust by the intersection point of vertical plane where testpieces center of gravity Y-axis and Z axis coordinate,
Numerical value unit is m；
ρ is the eccentricity of vectored thrust；
γ is the eccentric angle of vectored thrust；
S4), the error that vectored thrust determines testing stand is applied by the step S3 vectored thrust determined and step S1.
The advantages of the present invention over the prior art are that:
1, Time series analysis of the invention, realizes the measurement of six square phase vectorial force and the determination of error, structure are simple.
2, Time series analysis of the invention, wherein the moving frame of six square phase test bay passes through adapter frame back plate and testpieces
Rigid connection, centre frame supporting and fixing testpieces tail portion, adjustment wheel Adjustment Tests part installation site make it with moving frame coaxially with essence
Determine position, measuring device is connected by center with calibrated in situ device, and testpieces, device for measuring force and calibrated in situ dress are realized
The alignment of three is set, structure is simple, and the installation of measuring device and testpieces is simple and easy.
3, Time series analysis of the invention, wherein the moving frame global stiffness of six square phase test bay is larger, in order to guarantee to try
Frame dynamic property is tested, in design reasonable layout force-summing element, using structure the principle of equal strength, removes the part that do not stress of material
Etc. optimization designs, mitigate moving frame quality.
4, Time series analysis of the invention, wherein adjusting bracket is set in the stiffening plate of the moving frame of six square phase test bay,
It realizes that height is adjusted in connecting plate in a certain range, to guarantee connecting plate and testpieces reliable contacts, plays a supporting role.
5, Time series analysis of the invention, wherein the truss structure of the moving frame of six square phase test bay is by five horizontal branch
Stay tube and multiple groups diagonal bracing pipe composition to connect adapter frame and centre frame, while bearing to become caused by because of horizontal and lateral force
Shape guarantees the rigidity of moving frame.
6, Time series analysis of the invention, wherein six square phase test bay determines frame setting horizontal base, and it is entire fixed to improve
The load ability of frame, by horizontal base plate by improving the load ability of horizontal base plate on pressing plate fixed mounting horizontal base,
Meanwhile by adjusting the levelness of parallels adjustment horizontal base plate, the precision for entirely determining frame is improved.
7, Time series analysis of the invention, wherein the frame of determining of six square phase test bay passes through in the first portal frame, the second dragon
Flowing hole is set on door frame and force-bearing base mounting base, and uses symmetrical structure, reduction can influence of the surrounding flow field to dynamometry component.
8, Time series analysis of the invention, wherein the frame of determining of six square phase test bay passes through in the first portal frame, the second dragon
First gantry installation frame and the second gantry installation frame are set on door frame, cleverly realize the installation of testpieces simulator.
9, the method for determination of six components of foree vectored thrust of the invention, by constructing six square phase model, space force system balance side
Journey group calculates the size, eccentric angle and eccentricity of the vectored thrust of tested object, and labyrinth is simplified, for design six
Component test macro lays the foundation.
10, the method for determination of six components of foree vectored thrust of the invention is different from existing using horizontal determination of six components of foree method
The vertical determination of six components of foree method of technology, not only opens new design method, but also be conducive to six square phase for six square phase test macro
The design of test macro solves the problems, such as that existing vertical six square phase test macro occupied space is higher.
11, the method for determination of six components of foree vectored thrust of the invention, fully considers the gravity of engine, greatly improves measurement
Precision.
12, Time series analysis of the invention, wherein vector force loading device simulates the direction of vectorial force with geometric angle
Angle, adjustable angle, structure is simple, and the power applied using flexible stainless steel seizing wire does not substantially generate moving frame additional
Constraint.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of six square phase test bay in Time series analysis of the invention.
Fig. 2 is the structural schematic diagram of vector force loading device in Time series analysis of the invention.
Fig. 3 is the structural schematic diagram for determining frame of six square phase test bay in Time series analysis of the invention.
Fig. 4 is the structural schematic diagram of the moving frame of six square phase test bay in Time series analysis of the invention.
Fig. 5 is the structural schematic diagram of the adapter frame of the moving frame of six square phase test bay in Time series analysis of the invention.
Fig. 6 is the structural schematic diagram of the centre frame of the moving frame of six square phase test bay in Time series analysis of the invention.
Fig. 7 is the structural schematic diagram of the stiffening plate of the moving frame of six square phase test bay in Time series analysis of the invention.
Fig. 8 is the structural schematic diagram of the dynamometry component of six square phase test bay in Time series analysis of the invention.
Fig. 9 is the structural schematic diagram of the location supporting rack of six square phase test bay in Time series analysis of the invention.
Figure 10 is the mathematical model schematic diagram of the method for determination of six components of foree vectored thrust of the invention.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection ", " abutting " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
A kind of Time series analysis, including six square phase test bay and vector force loading device 500, the six square phase test run
Platform is used for the measurement of the vectorial force of testpieces 10 comprising moving frame 100 determines frame 200, dynamometry component 300 and calibrated in situ dress
Set 400, the dynamometry component 300 and calibrated in situ device 400 be it is multiple, the moving frame leads to 100 excessively the multiple dynamometry groups
Part 300 and calibrated in situ device 400 are determined frame 200 and are connect with described, and the vector force loading device 500, which is fixed on, described determines frame
It is connect on 200 and with the moving frame 100.
The moving frame 100, for bearing testpieces 10 and transmit its generation axial thrust, horizontal lateral thrust with it is vertical
The device of lateral force, length are about 3200mm, and circumferential size is about 900mm × 900mm, weight about 500kg；Specifically include switching
Frame 110, centre frame 120, stiffening plate 130 and truss 140；Along the axial direction of testpieces 10, the adapter frame 110, truss 140
It is fixedly connected sequentially with centre frame 120, the stiffening plate 130 is mounted on testpieces 10.The adapter frame 110 is joint test
The component of part 10 and measuring device comprising the foreboard 112 being fixedly connected sequentially, load pipe 113 and back plate 114, the back plate
114 connect with the truss 140.Center 111 is fixed on the foreboard 112；The foreboard 112 passes through pull rod 225 and institute
State the connection of force-bearing base 224；114 bottom of back plate is connect by 2 location supporting racks 370 with the horizontal base plate 212, described
2 location supporting racks 370 are located at the two sides of the dynamometry component 300 of the bottom and horizontal base plate 212 that connect the back plate 114.
It is described to determine frame 200, it is the reference platform of entire six square phase Test Rig, when work bears to pass by dynamometry component
The main thrust and lateral force come bears the proof force that calibration cylinder component generates when calibration, specifically includes horizontal base portion, hold
Power portion and mounting portion；The horizontal base portion includes horizontal base 211, horizontal base plate 212, the first support base 213 and second
Support seat 214；The horizontal base plate 212 is fixed on the horizontal base 211, first support base 213 and the second support base
214 are fixed on the horizontal base 211, and first support base 213 is 2, relative to the 212 length side of horizontal base plate
To being symmetrical arranged, second support base 214 is 2, is symmetrical arranged relative to 212 length direction of horizontal base plate.It is described
Load portion includes load wall 221, heavy frame 222, force-bearing base mounting base 223 and force-bearing base 224；The load wall 221 with it is described
211 one end of horizontal base is fixedly connected, and described 223 one end of force-bearing base mounting base is fixedly connected with horizontal base plate 212, the other end with
Force-bearing base 224 is fixedly connected, and described 222 one end of heavy frame is fixedly connected with load wall 221, and the other end and force-bearing base 224 are fixed
Connection；Force-bearing base 224 directly bears the axial thrust of testpieces generation, and this thrust is passed to load by heavy frame 222
Wall 221.The mounting portion includes the first portal frame 231 and the second portal frame 232, is subject to and the horizontal lateral force of bearing is calibrated
The component of device and vertical and lateral power calibrating installation, first portal frame 231 are fixedly connected with first support base 213,
Second portal frame 232 is fixedly connected with second support base 214.It is described to hold along 211 length direction of horizontal base
Power wall 221, heavy frame 222, force-bearing base 224, the first portal frame 231 and the second portal frame 232 are arranged successively.
The dynamometry component 300 and calibrated in situ device 400 are multiple；The moving frame 100 passes through multiple dynamometry components
300 and multiple calibrated in situ devices 400 determine frame 200 with described and connect；Wherein, the center 111 in the adapter frame 110 passes through
One dynamometry component 300 is connect with the force-bearing base 224；Pass through a calibrated in situ device 400 and institute at the top of the back plate 114
The crossbeam connection of the first portal frame 231 is stated, 114 one side of back plate passes through a dynamometry component 300 and described first gantry
One column of frame 231 connects, and another side is another by a calibrated in situ device 400 and first portal frame 231
A column connection；The bottom of the back plate 114 is connect by a dynamometry component 300 with the horizontal base plate 212, all and institute
The calibrated in situ device 400 and dynamometry component 300 for stating the connection of back plate 114 are on a vertical plane.The side of the centre frame 120
Face is connect by a dynamometry component 300 with a column of second portal frame 232, and another side passes through a school in situ
Standard apparatus 400 is connect with another column of second portal frame 232, and the bottom of the centre frame 120 passes through 2 dynamometry groups
Part 300 and 1 calibrated in situ device 400 is connect with the horizontal base plate 212, connection 120 bottom of centre frame and horizontal base plate 212
2 dynamometry components 300 be located at connection 120 bottom of centre frame and horizontal base plate 212 calibrated in situ device 400 two sides；Institute
There are the calibrated in situ device 400 connecting with centre frame 120 and dynamometry component 300 on a vertical plane.
Vector force loading device 500, including mounting base 510, vectorial force load cylinder 520, fixed pulley 530, load cell
540 and wirerope 550；The mounting base 510, which is fixed on, determines on frame 200, and the vectorial force load cylinder 520 and fixed pulley 530 are solid
It is scheduled in the mounting base 510, described 550 one end of wirerope is fixed in moving frame 100, and the other end is fixed on the vectorial force and adds
It carries on cylinder 520, the wirerope 550 bypasses the fixed pulley, and the vector force loading device load cell 340 is arranged in institute
It states on wirerope 350.
Preferably, the wirerope 350 includes first segment and second segment, and first segment one end of the wirerope 350 is fixed
On vectorial force load cylinder 320, the other end is connect with 340 one end of vector force loading device load cell, the steel wire
Second segment one end of rope 350 is fixed in the moving frame 100, and the other end and vector force loading device load cell 340 are another
The first segment of end connection, the wirerope 350 bypasses the fixed pulley.
Preferably, the vectorial force load cylinder 320 is oil cylinder or cylinder.
Preferably, the wirerope 350 is flexible stainless steel wirerope, material be 304 (elastic modulus E=
194GPa), tensile strength sigmabNot less than 520MPa.
Preferably, the dynamometry component 300 includes the sequentially connected 360, first connecting plate 340, the first Universal flexible part
320, load cell 310, the second Universal flexible part 330 and the second connecting plate 350.It is further preferred that connecting the switching
The load cell of the dynamometry component of center 111 and the force-bearing base 224 on frame 110 is pressure sensor；Described in connection
The one side of centre frame 120 and the dynamometry component of a column of second portal frame 232 and it connect 114 one side of back plate
Load cell with the dynamometry component of a column of first portal frame 231 is tension compression bidirectional load cell；Connection
120 bottom of centre frame and 2 dynamometry components of horizontal base plate 212 and it connect 114 bottom of back plate and horizontal base plate
The load cell of 212 dynamometry component is tension compression bidirectional load cell.
Preferably, the calibrated in situ device 400 includes sequentially connected hydraulic loading device 410,420 and of force snesor
Calibrate hydraulic cylinder 430, hydraulic loading device be to the device that is controlled of calibration hydraulic cylinder 430, by stepper motor, speed reducer,
The components such as assembly for plunger composition；Calibration oil cylinder is the power source of in-situ calibration system, is exerted a force by it to standard transducer.Pass through setting
Calibrated in situ device 400 realizes the calibrated in situ of bench run part, improves the precision of entire testing stand, avoids test of many times
Afterwards, trueness error caused by related experiment device is subjected to displacement.
Preferably, it is provided with the first gantry installation frame 234 on each column of first portal frame 231, described second
The second gantry installation frame 235 is provided on each column of portal frame 232, to realize the installation of testpieces simulator, into one
Step is preferred, and the testpieces 10 is gas-turbine unit simulation test piece, the gas-turbine unit simulation test piece
Including testpieces simulation input cylinder 11, the testpieces simulation input cylinder 11 is 4, is separately mounted to 2 first gantry installations
On frame 234 and the second gantry installation frame 235, the testpieces simulation input cylinder 11 is intake simulation cylinder, simulated engine
Air inlet.
Preferably, first portal frame 231 is provided with flowing hole in second portal frame 232 and force-bearing base mounting base 223
233, to reduce influence of the surrounding flow field to dynamometry component.
Preferably, load pipe 113 is 4, relative to the axial direction of testpieces, is symmetrical arranged in the same plane, with
Using structure the principle of equal strength reasonable layout stress.
Preferably, the centre frame 120 is the component for supporting and fixing testpieces tail portion comprising upper cover 121, lower body
123 take turns 122 with adjustment；The upper cover 121 is fixedly connected with lower body 123, and adjustment wheel 122 has 4,4 adjustment take turns 122 relative to
The axial direction of testpieces 10, is symmetrical arranged in the same plane, and 2 adjustment wheels 122 pass through 121,2 adjustment wheels 122 of upper cover
Across lower body 123, by setting adjustment wheel, the installation site and moving frame for realizing testpieces 10 are coaxially to be accurately positioned.
Preferably, the stiffening plate 130 is the component for bearing tens of tons of internal force of testpieces itself generation comprising
Plate 131 and adjusting bracket 132, the adjusting bracket 132 are fixed on the plate 131, and the stiffening plate 130 is 2, on
It is symmetrically connect with testpieces 10 down, the adjusting bracket 132 includes testpieces connecting plate 1321, elevation and subsidence regulating device 1323 and tune
Save rack fixing seat 1322；1323 both ends of elevation and subsidence regulating device are separately connected testpieces connecting plate 1321 and adjusting bracket is solid
Reservation 1322, the elevation and subsidence regulating device 1323 can be the forms such as hydraulic cylinder, cylinder, worm and gear, the testpieces connection
Plate 1321 is connect with testpieces 10, and the adjusting bracket fixing seat 1322 is fixedly connected with plate 131, by the way that lift adjustment is arranged
Device 1323 realizes testpieces connecting plate 1321 and height is adjusted in a certain range, to guarantee connecting plate 1321 and test
10 reliable contacts of part, play a supporting role.The truss 140 is made of five horizontally-supported pipes and multiple groups diagonal bracing pipe, to
Adapter frame 110 and centre frame 120 are connected, while bearing to deform caused by because of horizontal and lateral force, guarantees the rigidity of moving frame.
Preferably, be provided with along 211 length direction of horizontal base, the horizontal base 211 2 it is disposed in parallel
The distance between 215,2 T-slots 215 of T-slot are greater than the width of horizontal base plate 212, are provided in the T-slot 215 multiple
Pressing plate 216 and adjustment parallels 217, the horizontal base plate 212 are fixed on the horizontal base 211 simultaneously by multiple pressing plates 216
Levelness is adjusted by multiple adjustment parallels 217.
First portal frame 231 is higher than the second portal frame 232.
Preferably, it is provided with bracket connecting hole on plate 131, for being attached simultaneously guarantee test part 10 with testpieces 10
Concentricity.
Preferably, the adjusting bracket 132 is 2, and the axial direction along testpieces 10 is arranged, to further increase test
The concentricity of part 10.
Using the mistake method for determining difference of above-mentioned Time series analysis, include the following steps:
S1), apply vectored thrust；
Mounting base is fixed on by predetermined position and is determined on frame, the side of vectorial force and pr-set vector thrust that wirerope is provided
To coincidence, axial displacement is generated by vectorial force load cylinder, is applied by the direction that fixed pulley is driven change active force to moving frame
Add vectorial force, and the force value of the vectorial force applied by the measurement of vector force loading device load cell, the vector that moving frame is subject to
Power is the vectored thrust simulated；
S2), six square phase model is constructed；
O-XYZ rectangular coordinate system is constructed, with the axis of testpieces and all calibrated in situ devices connecting with back plate and survey
Vertical plane where power component is coordinate origin O, and using the axis of testpieces as X-axis, Y-axis crosses origin O and X-axis intersects vertically simultaneously
It is parallel to the horizontal plane, Z axis crosses origin O and intersects vertically with X-axis and parallel with vertical plane；Regulation dynamometry component is " just " by pulling force,
Be pressurized is " negative "；
S3), according to six square phase model, the big of the vectored thrust of testpieces is calculated by equations of configuration of equilibrium of spatial force series
Small, eccentric angle and eccentricity；The equations of configuration of equilibrium of spatial force series are as follows:
In formula: F1And F2The dynamometry value of 2 dynamometry components of centre frame bottom and horizontal base plate is respectively connected, unit is
N；F3For the dynamometry value of the dynamometry component of a column of the one side and the second portal frame of connection centre frame, unit N；F4For
Connect the dynamometry value of the dynamometry component of back plate bottom and horizontal base plate, unit N；F5For connection back plate one side and first gantry
The dynamometry value of the dynamometry component of one column of frame, unit N；F6For the dynamometry of center and force-bearing base in connection adapter frame
The dynamometry value of component, unit N；
P is the size of vectored thrust, unit N；
Px、PyAnd PzRespectively for vectored thrust in the component of tri- coordinate directions of X, Y, Z, the unit of quantitative value is N；
Mx、My、MzRespectively for resultant moment in the component of tri- coordinate directions of X, Y, Z, the unit of quantitative value is Nm, is pressed
Right-hand rule determines " just " direction；
W is the gravity of testpieces, and unit N is given value；
LmFor testpieces center of gravity and the vertical plane where all calibrated in situ devices and dynamometry component being connect with back plate
Horizontal distance, unit m are given value；
L is that the vertical plane where all calibrated in situ devices and dynamometry component connecting with back plate connects with all with centre frame
The distance of vertical plane where the calibrated in situ device and dynamometry component that connect, unit m are given value；
R connects centre frame on the vertical plane where all calibrated in situ devices and dynamometry component connecting with centre frame
The half of the horizontal distance of 2 dynamometry components of bottom and horizontal base plate, unit m are given value；
ypAnd zpRespectively vectored thrust by the intersection point of vertical plane where testpieces center of gravity Y-axis and Z axis coordinate,
Numerical value unit is m；
ρ is the eccentricity of vectored thrust；
γ is the eccentric angle of vectored thrust；
S4), the error that vectored thrust determines testing stand is applied by the step S3 vectored thrust determined and step S1.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of Time series analysis, which is characterized in that including six square phase test bay and vector force loading device, six square phase test run
Platform includes moving frame, determines frame, dynamometry component and calibrated in situ device；Dynamometry component and calibrated in situ device be it is multiple, moving frame is logical
It crosses multiple dynamometry components and calibrated in situ device is connect with frame is determined, vector force loading device, which is fixed on, to be determined on frame and connect with moving frame
It connects.
2. Time series analysis according to claim 1, it is characterised in that: moving frame includes adapter frame, centre frame, stiffening plate
And truss；Along the axial direction of testpieces, adapter frame, truss and centre frame are fixedly connected sequentially, and stiffening plate is mounted on testpieces
On；Adapter frame includes the foreboard being fixedly connected sequentially, and load pipe and back plate, back plate are connect with truss, and center is fixed on foreboard
Set；
Determining frame includes horizontal base portion, load portion and mounting portion；Horizontal base portion includes horizontal base, horizontal base plate, and first
Support seat and the second support base；Horizontal base plate is fixed on horizontal base, and the first support base and the second support base are fixed on horizontal base
On seat, the first support base is 2, and the length direction relative to horizontal base plate is symmetrical arranged, and the second support base is 2, relative to
The length direction of horizontal base plate is symmetrical arranged；Load portion includes load wall, heavy frame, force-bearing base mounting base and force-bearing base；Load
Wall is fixedly connected with horizontal base one end, and force-bearing base mounting base one end is fixedly connected with horizontal base plate, and the other end and force-bearing base are solid
Fixed connection, heavy frame one end are fixedly connected with load wall, and the other end is fixedly connected with force-bearing base；Mounting portion includes the first portal frame
With the second portal frame, the first portal frame is fixedly connected with the first support base, and the second portal frame is fixedly connected with the second support base；Edge
The length direction of horizontal base, load wall, heavy frame, force-bearing base, the first portal frame and the second portal frame are arranged successively；
Dynamometry component and calibrated in situ device are multiple；Center in adapter frame is connected by a dynamometry component and force-bearing base
It connects；It is connect by a calibrated in situ device with the crossbeam of the first portal frame at the top of back plate, back plate one side passes through a dynamometry
Component is connect with a column of the first portal frame, and another side is another by calibrated in situ device and the first portal frame
A column connection；The bottom of back plate is connect by a dynamometry component with horizontal base plate, all calibrated in situ connecting with back plate
Device and dynamometry component are on a vertical plane；
The one side of centre frame is connect by a dynamometry component with a column of the second portal frame, and another side passes through one
Calibrated in situ device is connect with another column of the second portal frame, and the bottom of centre frame passes through 2 dynamometry components and 1 original position
Calibrating installation is connect with horizontal base plate, and 2 dynamometry components for connecting centre frame bottom and horizontal base plate are located at connection centre frame bottom
The two sides of the calibrated in situ device of portion and horizontal base plate, all calibrated in situ devices connecting with centre frame and dynamometry component are one
On a vertical plane；
Vector force loading device, including mounting base, vectorial force load cylinder, fixed pulley, vector force loading device load cell and
Wirerope；Mounting base, which is fixed on, determines on frame, and vectorial force load cylinder and fixed pulley are fixed in mounting base, and wirerope one end is fixed on
In moving frame, the other end is fixed on vectorial force load cylinder, and wirerope bypasses fixed pulley, and load cell is arranged on a steel cord.
3. Time series analysis according to claim 2, it is characterised in that: wirerope includes first segment and second segment, steel
First segment one end of cord is fixed on vectorial force load cylinder, and the other end and vector force loading device load cell one end connect
It connecing, second segment one end of wirerope is fixed in moving frame, and the other end is connect with the vector force loading device load cell other end,
The first segment of wirerope bypasses fixed pulley.
4. Time series analysis according to claim 2, it is characterised in that: dynamometry component include it is sequentially connected, first
Connecting plate, the first Universal flexible part, load cell, the second Universal flexible part and the second connecting plate.
5. Time series analysis according to claim 2, it is characterised in that: calibrated in situ device includes sequentially connected liquid
Press loading device, force snesor and calibration hydraulic cylinder.
6. Time series analysis according to claim 2, it is characterised in that: the first portal frame, the second portal frame and load
Flowing hole is provided in seat mounting base.
7. Time series analysis according to claim 4, it is characterised in that: center and force-bearing base in connection adapter frame
Dynamometry component load cell be pressure sensor.
8. Time series analysis according to claim 4, it is characterised in that: connect one side and second gantry of centre frame
The survey of the dynamometry component of one column of the dynamometry component and connection back plate one side and the first portal frame of one column of frame
Force snesor is tension compression bidirectional load cell.
9. Time series analysis according to claim 4, it is characterised in that: connect the 2 of centre frame bottom and horizontal base plate
The load cell of the dynamometry component of a dynamometry component and connection back plate bottom and horizontal base plate is tension compression bidirectional force-measuring sensing
Device.
10. a kind of mistake method for determining difference using the described in any item Time series analysis of claim 2-9, feature exist
In including the following steps:
S1), apply vectored thrust；
Mounting base is fixed on by predetermined position and is determined on frame, the direction weight of the vectorial force that wirerope is provided and pr-set vector thrust
It closes, axial displacement is generated by vectorial force load cylinder, is applied by the direction that fixed pulley is driven change active force to moving frame and is sweared
The force value for the vectorial force measured one's own ability, and applied by the measurement of vector force loading device load cell, the vectorial force that moving frame is subject to is i.e.
For the vectored thrust of simulation；
S2), six square phase model is constructed；
O-XYZ rectangular coordinate system is constructed, with the axis of testpieces and all calibrated in situ devices connecting with back plate and dynamometry group
Vertical plane where part is coordinate origin O, and using the axis of testpieces as X-axis, Y-axis crosses origin O and X-axis intersects vertically and and water
Plane is parallel, and Z axis crosses origin O and intersects vertically with X-axis and parallel with vertical plane；Regulation dynamometry component is " just " by pulling force, is pressurized
For " negative "；
S3), according to six square phase model, the size, partially of the vectored thrust of testpieces is calculated by equations of configuration of equilibrium of spatial force series
Heart angle and eccentricity；The equations of configuration of equilibrium of spatial force series are as follows:
In formula: F1And F2Respectively connect the dynamometry value of 2 dynamometry components of centre frame bottom and horizontal base plate, unit N；F3
For the dynamometry value of the dynamometry component of a column of the one side and the second portal frame of connection centre frame, unit N；F4For connection
The dynamometry value of the dynamometry component of back plate bottom and horizontal base plate, unit N；F5For connection back plate one side and first portal frame
The dynamometry value of the dynamometry component of one column, unit N；F6For the dynamometry component of center and force-bearing base in connection adapter frame
Dynamometry value, unit N；
P is the size of vectored thrust, unit N；
Px、PyAnd PzRespectively for vectored thrust in the component of tri- coordinate directions of X, Y, Z, the unit of quantitative value is N；
Mx、My、MzRespectively resultant moment is in the component of tri- coordinate directions of X, Y, Z, and the unit of quantitative value is Nm, by the right hand
Corkscrew rule determines " just " direction；
W is the gravity of testpieces, and unit N is given value；
LmFor testpieces center of gravity and the vertical plane where all calibrated in situ devices and dynamometry component being connect with back plate it is horizontal away from
From unit m is given value；
L is that the vertical plane where all calibrated in situ devices and dynamometry component connecting with back plate is connect with all with centre frame
The distance of vertical plane where calibrated in situ device and dynamometry component, unit m are given value；
R connects centre frame bottom on the vertical plane where all calibrated in situ devices and dynamometry component connecting with centre frame
With the half of the horizontal distance of 2 dynamometry components of horizontal base plate, unit m is given value；
ypAnd zpRespectively coordinate of the vectored thrust by the intersection point of vertical plane where testpieces center of gravity in Y-axis and Z axis, numerical value
Unit is m；
ρ is the eccentricity of vectored thrust；
γ is the eccentric angle of vectored thrust；
S4), the error that vectored thrust determines testing stand is applied by the step S3 vectored thrust determined and step S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163636.2A CN109115510B (en) | 2018-10-01 | 2018-10-01 | Six-component force test bed and error determination method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811163636.2A CN109115510B (en) | 2018-10-01 | 2018-10-01 | Six-component force test bed and error determination method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109115510A true CN109115510A (en) | 2019-01-01 |
| CN109115510B CN109115510B (en) | 2023-08-08 |
Family
ID=64857280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811163636.2A Active CN109115510B (en) | 2018-10-01 | 2018-10-01 | Six-component force test bed and error determination method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109115510B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623920A (en) * | 2020-06-22 | 2020-09-04 | 西安航天动力试验技术研究所 | Lateral force calibration tool and calibration method for rocket engine three-dimensional force measurement device |
| CN113029415A (en) * | 2021-01-26 | 2021-06-25 | 北京灵动飞天动力科技有限公司 | Non-interference multi-component solid rocket engine thrust measurement system and installation measurement method |
| CN114509271A (en) * | 2021-12-31 | 2022-05-17 | 北京航天益森风洞工程技术有限公司 | Engine thrust measuring rack and thrust measuring method |
| CN114636559A (en) * | 2022-04-06 | 2022-06-17 | 北京航空航天大学 | Radial thrust acquisition mechanism, thrust vector measurement device and method |
| CN114777977A (en) * | 2022-04-11 | 2022-07-22 | 蓝箭航天空间科技股份有限公司 | Counterforce measurement system and method for pipeline interface connected by rocket connector |
| CN114858334A (en) * | 2022-04-06 | 2022-08-05 | 北京航空航天大学 | Rocket engine thrust vector measuring device and thrust vector measuring method |
| CN114923617A (en) * | 2022-07-21 | 2022-08-19 | 中国航发四川燃气涡轮研究院 | Engine lift force measuring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2250446C2 (en) * | 2003-06-11 | 2005-04-20 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" (ОАО "НПО "Сатурн") | Bench for testing turbojet engine |
| US20120079868A1 (en) * | 2010-10-05 | 2012-04-05 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Calibration method for multi-component force measuring spindle unit used in tire testing machine |
| CN103759885A (en) * | 2013-12-26 | 2014-04-30 | 长春轨道客车股份有限公司 | Force measurement wheel set calibration test stand |
| CN104502110A (en) * | 2015-01-23 | 2015-04-08 | 太原重工股份有限公司 | Variable-pitch motor loading device |
| CN105486441A (en) * | 2015-12-31 | 2016-04-13 | 西安航天动力试验技术研究所 | Attitude-control engine vector thrust measurement and calibration integrated device and measurement method |
| CN107238457A (en) * | 2017-06-28 | 2017-10-10 | 北京航空航天大学 | A kind of low thrust measurement apparatus |
| CN108225778A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of space vector power analog loading device |
-
2018
- 2018-10-01 CN CN201811163636.2A patent/CN109115510B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2250446C2 (en) * | 2003-06-11 | 2005-04-20 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" (ОАО "НПО "Сатурн") | Bench for testing turbojet engine |
| US20120079868A1 (en) * | 2010-10-05 | 2012-04-05 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Calibration method for multi-component force measuring spindle unit used in tire testing machine |
| CN103759885A (en) * | 2013-12-26 | 2014-04-30 | 长春轨道客车股份有限公司 | Force measurement wheel set calibration test stand |
| CN104502110A (en) * | 2015-01-23 | 2015-04-08 | 太原重工股份有限公司 | Variable-pitch motor loading device |
| CN105486441A (en) * | 2015-12-31 | 2016-04-13 | 西安航天动力试验技术研究所 | Attitude-control engine vector thrust measurement and calibration integrated device and measurement method |
| CN107238457A (en) * | 2017-06-28 | 2017-10-10 | 北京航空航天大学 | A kind of low thrust measurement apparatus |
| CN108225778A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of space vector power analog loading device |
Non-Patent Citations (2)
| Title |
|---|
| 刘子虚等: "轻型固体火箭发动机试车台校准技术研究", 计测技术, vol. 37, no. 1 * |
| 王宣银等: "基于Stewart机构的六维力/力矩传感器", 机械工程学报, vol. 44, no. 12 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623920A (en) * | 2020-06-22 | 2020-09-04 | 西安航天动力试验技术研究所 | Lateral force calibration tool and calibration method for rocket engine three-dimensional force measurement device |
| CN113029415A (en) * | 2021-01-26 | 2021-06-25 | 北京灵动飞天动力科技有限公司 | Non-interference multi-component solid rocket engine thrust measurement system and installation measurement method |
| CN114509271A (en) * | 2021-12-31 | 2022-05-17 | 北京航天益森风洞工程技术有限公司 | Engine thrust measuring rack and thrust measuring method |
| CN114636559A (en) * | 2022-04-06 | 2022-06-17 | 北京航空航天大学 | Radial thrust acquisition mechanism, thrust vector measurement device and method |
| CN114858334A (en) * | 2022-04-06 | 2022-08-05 | 北京航空航天大学 | Rocket engine thrust vector measuring device and thrust vector measuring method |
| CN114636559B (en) * | 2022-04-06 | 2024-01-19 | 北京航空航天大学 | Radial thrust collection mechanism, thrust vector measurement device and method |
| CN114777977A (en) * | 2022-04-11 | 2022-07-22 | 蓝箭航天空间科技股份有限公司 | Counterforce measurement system and method for pipeline interface connected by rocket connector |
| CN114777977B (en) * | 2022-04-11 | 2023-09-22 | 浙江蓝箭航天空间科技有限公司 | Counterforce measuring system and method for pipeline interface connected with rocket connector |
| CN114923617A (en) * | 2022-07-21 | 2022-08-19 | 中国航发四川燃气涡轮研究院 | Engine lift force measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109115510B (en) | 2023-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109141905A (en) | A kind of six square phase test bay and its method for measuring vectored thrust | |
| CN109115510A (en) | A kind of Time series analysis and its accidentally method for determining difference | |
| CN111169653B (en) | Hinge point force testing device of nose landing gear and load calibration method | |
| CN103389183B (en) | Spacecraft quality characteristic comprehensive test board based on spherical air bearing | |
| CN107575437B (en) | Performance test experiment table for aviation hydraulic pump and hydraulic pipeline | |
| CN103616157B (en) | The quiet calibration system of wind-tunnel balance body axle system and method | |
| JP6161378B2 (en) | System and method for ground vibration test and weight and balance measurement | |
| CN107202660A (en) | 4 25N attitude control engine thermal vacuum environment stable state thrust calibration measurement apparatus | |
| CN101451897B (en) | Electromagnetic type small force value standard apparatus | |
| CN109084982B (en) | High-thrust rocket engine three-dimensional force measuring device and measuring method | |
| CN109115513A (en) | A kind of determination method of six square phase test bay moving frame intrinsic frequency | |
| CN101865750A (en) | Portable calibrating device for pull pressure sensor | |
| JP2008180559A (en) | Weight testing apparatus | |
| CN108168774A (en) | A kind of space vector force calibration method | |
| CN209027798U (en) | A kind of six square phase test bay | |
| CN201255659Y (en) | Balance detection cart for servo system | |
| CN112525481A (en) | Six-component high-precision micro rolling torque measuring device and measuring method | |
| CN109115512A (en) | The construction method of six square phase model and the method and test bay for measuring vectored thrust | |
| CN108225778A (en) | A kind of space vector power analog loading device | |
| CN208780465U (en) | A kind of Time series analysis | |
| CN209280321U (en) | A kind of six square phase test bay | |
| RU2287796C1 (en) | Device for measurement of aerodynamic force vector's components and of moment | |
| CN208780461U (en) | A kind of vector force loading device | |
| CN208780460U (en) | A kind of six square phase test bay moving frame | |
| CN216791646U (en) | Test bed engine thrust measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |