CN108827573A - The calibration method of micro-vibration interference source test verifying system - Google Patents
The calibration method of micro-vibration interference source test verifying system Download PDFInfo
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- CN108827573A CN108827573A CN201810348565.7A CN201810348565A CN108827573A CN 108827573 A CN108827573 A CN 108827573A CN 201810348565 A CN201810348565 A CN 201810348565A CN 108827573 A CN108827573 A CN 108827573A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
Abstract
The invention discloses a kind of calibration methods of high-precision micro-vibration interference source test verifying system, including the dynamic and static force measuring accuracy and torque measuring accuracy on three change in coordinate axis direction of calibration, it is realized by the cooperation of counterweight, pulley gear, high-precision force sensor etc..Scaling method of the invention, method is simple and reliable, using this method, it can be achieved that micro-vibration disturbs the calibration of the measuring accuracy of six component test system of source, six component perturbed force, has an objective appraisal to the accuracy of test.
Description
Technical field
The invention belongs to spacecraft dynamics experimental technique fields, and in particular to a kind of micro-vibration interference source test verifying system
The calibration system of system and the method calibrated using the calibration system that the micro-vibration interference source tests verifying system.
Background technique
Micro-vibration be spacecraft in orbit during, due to carrying equipment (such as momenttum wheel high-speed rotating component, solar wing
The walking members such as driving mechanism, infrared camera pendulum mirror etc. tilting members) normal work or space environment small excitation (as navigated
Its device disengaging ground shadow generate thermotropic micro-vibration) caused by spacecraft entirety and (or) the lesser reciprocating motion of local amplitude.?
The presence of rail micro-vibration environment can make the direction of satellite borne equipment and target that relative motion occur, and be to influence space telescope, high score
The key performances such as the high-precisions spacecraft image quality such as resolution remote sensing satellite, laser beam communications satellite and pointing accuracy it is important because
Element.
A large number of studies show that high-precision spacecraft is especially high-precision space telescopes such as " Hubble ", momenttum wheel is (anti-to make
With wheel) work when the disturbance that generates be the major disturbances source for influencing this kind of spacecraft image quality.Reaction wheel disturbs
Caused by the static unbalance due to caused by momenttum wheel non-uniform mass and unbalance dynamic.Static unbalance is the matter due to wheel
The heart deviates from the center of shaft and generates, and unbalance dynamic is since the non-uniform mass of wheel causes wheel product of inertia not
It is zero and generation.In order to analyze influence of the reaction wheel to satellite force environment, the output of reply single machine first disturb vibration power into
Row sufficiently identification, micro-vibration interference source test verifying system exactly carry out the output of momenttum wheel (reaction opinion) single machine and disturb vibration power test
Testing equipment force snesor is set on basic table top as shown in Figure 1, the testing equipment includes basic platform, on force snesor
Work top is arranged in portion, is interfered using six components that the test macro can be generated with moving components such as quantitative determination satellite momentum wheels
Power, although can measure, how to answer the accuracy of test perturbed force is always a problem, it is necessary to be to this using preceding
The accuracy of system carries out quantization calibration.
Summary of the invention
The object of the present invention is to provide a kind of calibration methods of high-precision micro-vibration interference source test verifying system, are suitable for
Satellite micro-vibration disturbs the detection calibration of six component of source.In the past, disturbing source test macro using micro-vibration can be dynamic with quantitative determination satellite
The six component perturbed forces that the moving components such as amount wheel generate, but the accuracy for how answering test perturbed force is always a problem.
Six component test systems can be demarcated using method of the invention, successfully solve and determine six component perturbed forces of dynamic
Measuring accuracy problem.
Present invention employs the following technical solutions：
High-precision micro-vibration interference source tests the calibration method of verifying system, includes the following steps：
1) dynamic and static force measuring accuracy, three axes direction demarcated on three change in coordinate axis direction are respectively defined as x,
Y, z
1.1) when being demarcated to z to power Fz, by the way of the release of prefabricated power, specially the counterweight of given weight is placed on
At basic table top upper surface centralized positioning pin, turn-on data acquisition system acquires table top power time-domain signal, then removes weight suddenly
Code continues to record table top power time-domain signal, reads the power time-domain signal peak value removed before and after counterweight, count further according to formula (1)
Calculate the measuring accuracy in the direction Fz：
Static force measurement accuracy=(m*g-F)/m*g ... ... ... ... ... ... (1)
Wherein, m ... counterbalance mass；The direction F ... z upper table surface power surveys resultant force, at this time F=Fz；
1.2) when demarcating to x to power Fx, static force, which is used, to be marked in x to giving prefabricated power and then discharge by the way of prefabricated power
Fixed, dynamic force is demarcated by the way of comparing with high-precision force sensor, and high-precision force sensor is specially fixed on work
Make at the center of table top lower surface, in the same plane with lower 4 force snesors of work top, and dynamometry axis direction be x to；It will
Pulley gear is fixed on the side surface upper part edge center position of basic platform, connects counterweight with rope, changes stress side by pulley
To being connected to high-precision force sensor；Height of pulley is adjusted, it is horizontal to make rope, and guarantees that rope and high-precision force sense
Device dynamometry overlapping of axles, the gravity of counterweight pass to high-precision force sensor by rope and pass to work top again, table top by
X to power and x suffered by high-precision force sensor to power it is consistent；
When carrying out static force test, turn-on data acquisition system acquires table top power time-domain signal, then discharges counterweight suddenly,
Continue to record table top power time-domain signal；The power time-domain signal peak value for reading counterweight release front and back, the direction Fx is calculated according to formula 1
Measuring accuracy, at this point, F=Fx；When carrying out dynamic force test, turn-on data acquisition system acquires power time-domain signal, then uses
It hangs one's head and taps counterweight bottom, so that it is generated vibration signal, at this point, table top force snesor can be collected with high-precision force sensor
Vibration signal reads its peak value, calculates measuring accuracy using formula (2)：
Dynamic force test precision=(F1-F2)/F1 ... ... ... ... ... (2)
F1 ... high-precision force sensor institute dynamometry peak value；The surveyed resultant force peak value of F2 ... table top；
1.3) when demarcating to y direction force, the calibration mode of Fy is identical as Fx calibration mode；
2) dynamic and locked rotor torque measuring accuracy around three reference axis are demarcated, three axes direction is respectively defined as x, y,
z
2.1) when to being demarcated around y-axis torque, to the torque of one known y-axis of work top, by with table top institute
The y-axis torque measured compares, and calculates y-axis torque measuring accuracy.It is specially l's by length by high-precision force sensor
Steel pole is fixed on work top upper surface center, and after installing, high-precision force sensor is higher by work top upper surface
L distance at the heart, dynamometry axis direction be x to.Pulley gear is fixed on to the side surface upper part edge center position of basic platform, uses rope
Counterweight is connected, Impact direction is changed by pulley, is connected to high-precision force sensor；Height of pulley is adjusted, keeps rope horizontal,
Guarantee rope and high-precision force sensor dynamometry overlapping of axles, the gravity of counterweight passes to high-precision force sensor by rope and leads to again
It crosses steel pole and passes to work top；Table top is Weight gravity by power size, and the arm of force is the torque around y-axis of l；
When carrying out locked rotor torque test, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force are sensed
Device power time-domain signal then discharges counterweight suddenly, continues scoring table moment of area time-domain signal and high-precision force sensor force time domain
Signal reads counterweight release front and back table top y-axis torque time-domain signal and high-precision force sensor force time-domain signal peak value, according to public affairs
Formula (3) calculates the measuring accuracy of My：
Locked rotor torque measurement accuracy=(m*g*l-M)/m*g*l ... ... ... ... ... (3)
M ... counterbalance mass；L ... steel pole length；M ... table top institute measuring moment；
When carrying out dynamic moment testing, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force are sensed
Device power time-domain signal then taps counterweight bottom with hanging one's head, and so that it is generated vibration signal, at this point, table top measures y-axis moment vibrations
Signal, high-precision force sensor can collect force vibration signal, read its peak value respectively, calculate measuring accuracy using formula (4)：
The measuring accuracy of dynamic force moment=(F1*l-M)/F1*l ... ... ... ... ... (4)
Wherein, F1 ... high-precision force sensor institute dynamometry peak value；L ... steel pole length；M.. the surveyed torque peak of table top；
2.2) when to demarcating around x-axis torque, the calibration mode of Mx is identical as My calibration mode；
2.3) when to being demarcated around z-axis torque, to the torque known to work top one around z-axis, by with table top
Measured compares around z-axis torque, calculates around z-axis torque measuring accuracy；Specific method is that positioning device is fixed to work
Make position of the table top y to side edge, high-precision force sensor is installed in positioning device；After installation, work top center is to calmly
The vertical range of the installation point of position device is b, and the dynamometry axis direction of high-precision force sensor and the x of table top are to identical；Pulley dress
It sets and is mounted on basic platform x to side surface upper part edge, and be first preset in high-precision force sensor dynamometry axis direction, connected with rope
Counterweight is connect, Impact direction is changed by pulley, is connected to high-precision force sensor, adjusts height of pulley, keeps rope horizontal, protects
Rope and high-precision force sensor dynamometry overlapping of axles are demonstrate,proved, the gravity of counterweight passes to high-precision force sensor by rope and passes through again
Positioning device passes to work top, and work top is counterweight weight by power size, and the arm of force is the torque around z-axis of b；It carries out
When locked rotor torque is tested, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force sensor force time domain are believed
Number, counterweight is then discharged suddenly, continues scoring table moment of area time-domain signal and high-precision force sensor force time-domain signal, reads weight
Code release front and back table top z-axis torque time-domain signal and high-precision force sensor force time-domain signal peak value, according to the formula (5) come
Calculate the measuring accuracy in the direction Mz；When carrying out dynamic moment testing, turn-on data acquisition system picking platform moment of area time-domain signal
With high-precision force sensor force time-domain signal, counterweight bottom then is tapped with hanging one's head, so that it is generated vibration signal, at this point, table top
Z-axis moment vibrations signal is measured, high-precision force sensor can collect force vibration signal, its peak value be read respectively, using described
Formula (6) calculates measuring accuracy.
Locked rotor torque measurement accuracy=(m*g*b-M)/m*g*b ... ... ... ... ... (5)
M ... counterbalance mass；Vertical range of b ... the work top center away from positioning device installation point；M ... table top institute dynamometry
Square；
The measuring accuracy of dynamic force moment=(F1*b-M)/F1*b ... ... ... ... ... (6)
Wherein, F1 ... high-precision force sensor institute dynamometry peak value；It hangs down away from positioning device installation point at b ... work top center
Straight distance；The surveyed torque peak of M ... table top；
Wherein, it when being demarcated to z to power Fz, can be compared by the value surveyed with high-precision force sensor to calculate table top
Measuring accuracy.
Wherein, high-precision force sensor is single shaft kistler9215 force snesor, and model can be replaced by other models.
Wherein, in such a way that Weight gravity discharges or loads, loading method can be by its other party for static force, torque calibration
Formula is replaced.
Wherein, dynamic force calibration is in such a way that Dynamic High-accuracy responds synchronism detection.
Wherein, the increased high-precision force sensor in dynamic force, torque caliberating device, can be with table top force snesor simultaneously
It measures.
Wherein, high-precision force sensor needs individually to be demarcated in face of calibrating table, it is determined as standard signal will then be surveyed
The dynamic response signal that dynamic response signal measured by test stand face is measured with high-precision force sensor compares, and it is dynamic to obtain it
The measuring accuracy of state power, torque.
Wherein, positioning device is fixed on work top side, acts on as when carrying out Mz calibration, positioning high-precision force is sensed
Device, and power free of losses suffered by high-precision force sensor is passed into work top.Positioning device requires higher rigid
Degree.
Satellite micro-vibration of the invention disturbs the scaling method of six component test system of source, and method is simple and reliable, utilizes the party
Method is, it can be achieved that micro-vibration disturbs the calibration of the measuring accuracy of six component test system of source, six component perturbed force, to the accuracy of test
There is an objective appraisal.
Detailed description of the invention
Fig. 1 a is that high-precision micro-vibration interference source in the prior art tests verifying system main view.
Fig. 1 b is that high-precision micro-vibration interference source in the prior art tests verifying system main view.
Fig. 2 is the calibration schematic diagram of Fz in scaling method of the invention；Wherein, 1 is counterweight；
Fig. 3 a is the calibration main view of Fx and Fy in scaling method of the invention, and the calibration mode on two directions is identical；Its
In, 1 is counterweight；2 be pulley gear；3 be high-precision force sensor；
Fig. 3 b is the calibration top view of Fx and Fy in scaling method of the invention, and the calibration mode on two directions is identical；Its
In, 1 is counterweight；2 be pulley gear；3 be high-precision force sensor；
Fig. 4 a is the calibration main view of Mx and My in scaling method of the invention, and the calibration mode on two directions is identical；Its
In, 1 is counterweight；2 be pulley gear；3 be high-precision force sensor；4 be the steel pole of long l
Fig. 4 b is the calibration main view of Mx and My in scaling method of the invention, and the calibration mode on two directions is identical；Its
In, 1 is counterweight；2 be pulley gear；3 be high-precision force sensor；4 be the steel pole of long l
Fig. 5 a is the calibration main view of Mz in scaling method of the invention；Wherein, 1 is counterweight；2 be pulley gear；3 be height
Precision force snesor；5 be positioning device.
Fig. 5 b is the calibration top view of Mz in scaling method of the invention；Wherein, 1 is counterweight；2 be pulley gear；3 be height
Precision force snesor；5 be positioning device.
Specific embodiment
Introduced below is the specific embodiment as the content of present invention, below by specific embodiment to the present invention
Content work further illustrates.Certainly, description following detailed description is only the content of example different aspect of the invention, and
It should not be construed as limiting the invention range.
The calibration method of high-precision micro-vibration interference source test verifying system of the invention, including three reference axis sides of calibration
Torque in upward dynamic and static force measuring accuracy and three change in coordinate axis direction of calibration is demarcated, three reference axis difference
For X, Y, Z-direction.
(a) calibration of Fz
The calibration schematic diagram of Fz in scaling method is shown referring to Fig. 2, Fig. 2；As shown in Fig. 2, being demarcated carrying out z to power
When, at the 1 work platform for placing face upper surface centralized positioning pin of counterweight of given weight, turn-on data acquisition system acquires table top power
Time-domain signal then removes counterweight suddenly, continues to record table top power time-domain signal.Read the power time-domain signal removed before and after counterweight
Peak value calculates the measuring accuracy in the direction Fz further according to formula 1.
Static force measurement accuracy=(m*g-F)/m*g ... ... ... ... ... ... (1)
Wherein, m ... counterbalance mass；The direction F ... z upper table surface power surveys resultant force, at this time F=Fz；
(b) calibration of Fx, Fy
The calibration schematic diagram of Fx and Fy in scaling method of the invention, the calibration on two directions are shown referring to Fig. 3, Fig. 3
Mode is identical；As shown in figure 3, being carried out carrying out Fx to calibration time-division the following steps：
(1) high-precision force sensor 3 is fixed at the center of work top lower surface, is sensed with lower 4 power of work top
Device in the same plane, and dynamometry axis direction be x to.
(2) pulley gear 2 is fixed on to the side surface upper part edge center position of basic platform
(3) counterweight is connected with rope, Impact direction is changed by pulley, is connected to high-precision force sensor.Adjustment is slided
Wheel height, it is horizontal to make rope, and guarantee rope and high-precision force sensor dynamometry overlapping of axles, and the gravity of counterweight is passed by rope
Pass high-precision force sensor and pass to work top again, the x that table top is subject to power and high-precision force sensor suffered by x to
Power it is consistent
(4) when carrying out static force test, turn-on data acquisition system acquires table top power time-domain signal, then discharges weight suddenly
Code 1 continues to record table top power time-domain signal.The power time-domain signal peak value for reading counterweight release front and back, calculates Fx according to formula 1
The measuring accuracy in direction.It can also be compared by the value surveyed with high-precision force sensor to calculate the measuring accuracy of table top.
Static force measurement accuracy=(m*g-F)/m*g ... ... ... ... ... ... (1)
Wherein, m ... counterbalance mass；The direction F ... z upper table surface power surveys resultant force, at this time F=Fx；
(5) when carrying out dynamic force test, turn-on data acquisition system acquires power time-domain signal, then taps counterweight with hanging one's head
Bottom makes it generate vibration signal.At this point, table top force snesor and high-precision force sensor can collect vibration signal.It reads
Its peak value is taken, calculates measuring accuracy using formula 2.
Dynamic force test precision=(F1-F2)/F1 ... ... ... ... ... (2)
F1 ... high-precision force sensor institute dynamometry peak value；The surveyed resultant force peak value of F2 ... table top；
Wherein, the calibration mode of Fy is identical as Fx calibration mode.
(c) Mx, My scaling method
The calibration schematic diagram of Mx and My in scaling method of the invention, the calibration on two directions are shown referring to Fig. 4, Fig. 4
Mode is identical.As shown in figure 4, being carried out carrying out My calibration time-division the following steps.
(1) high-precision force sensor 3 is fixed on work top upper surface center by the steel pole 4 that length is l, pacified
After installing, high-precision force sensor 3 is higher by l distance at the center of work top upper surface, dynamometry axis direction be x to.
(2) pulley gear 2 is fixed on to the side surface upper part edge center position of basic platform.
(3) counterweight 1 is connected with rope, Impact direction is changed by pulley, is connected to high-precision force sensor 3.Adjustment
Height of pulley keeps rope horizontal, guarantees rope and high-precision force sensor dynamometry overlapping of axles, and the gravity of counterweight 1 is passed by rope
It passs high-precision force sensor 3 and work top is passed to by steel pole 4 again.Table top is Weight gravity, arm of force l by power size
The torque around y-axis.
(4) when carrying out locked rotor torque test, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force
Sensor force time-domain signal then discharges counterweight 1 suddenly, continues scoring table moment of area time-domain signal and high-precision force sensor force
Time-domain signal.Read counterweight release front and back table top y-axis torque time-domain signal and high-precision force sensor force time-domain signal peak value, root
The measuring accuracy in the direction My is calculated according to formula 3.
Locked rotor torque measurement accuracy=(m*g*l-M)/m*g*l ... ... ... ... ... (3)
M ... counterbalance mass；L ... steel pole length；M ... table top institute measuring moment；
(5) when carrying out dynamic moment testing, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force
3 power time-domain signal of sensor then taps 1 bottom of counterweight with hanging one's head, it is made to generate vibration signal.At this point, table top measures y-axis power
Square vibration signal, high-precision force sensor 3 can collect force vibration signal, read its peak value respectively, calculated and tested using formula 4
Precision.
The measuring accuracy of dynamic force moment=(F1*l-M)/F1*l ... ... ... ... ... (4)
Wherein, F1 ... high-precision force sensor institute dynamometry peak value；L ... steel pole length；The surveyed torque peak of M ... table top；
Wherein, the calibration mode of Mx is identical as My calibration mode.
(d) Mz scaling method
It is the calibration schematic diagram of Mz in scaling method of the invention referring to Fig. 5, Fig. 5；As shown in figure 5, carrying out Mz calibration
Time-division the following steps carry out.
(1) positioning device 5 is fixed to position of the work top y to side edge.
(2) high-precision force sensor 3 is installed in positioning device 5, after installation, the peace at work top center to positioning device
The vertical range decorateeed is b, and the dynamometry axis direction of high-precision force sensor and the x of table top are to identical
(3) pulley gear is mounted on basic platform x to side surface upper part edge, and is first preset at high-precision force sensor dynamometry
In axis direction.Counterweight is connected with rope, Impact direction is changed by pulley, is connected to high-precision force sensor.Adjust pulley
Highly, make rope horizontal, guarantee rope and high-precision force sensor dynamometry overlapping of axles, the gravity of counterweight passes to height by rope
Precision force snesor passes through positioning device again and passes to work top, and work top is counterweight weight, arm of force b by power size
The torque around z-axis.
(4) when carrying out locked rotor torque test, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force
Sensor force time-domain signal then discharges counterweight suddenly, continues scoring table moment of area time-domain signal and high-precision force sensor force
Time-domain signal.Read counterweight release front and back table top z-axis torque time-domain signal and high-precision force sensor force time-domain signal peak value, root
The measuring accuracy in the direction Mz is calculated according to formula 5.
Locked rotor torque measurement accuracy=(m*g*b-M)/m*g*b ... ... ... ... ... (5)
M ... counterbalance mass；Vertical range of b ... the work top center away from positioning device installation point；M ... table top institute dynamometry
Square；
(5) when carrying out dynamic moment testing, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force
Sensor force time-domain signal then taps counterweight bottom with hanging one's head, it is made to generate vibration signal.At this point, table top measures z-axis torque
Vibration signal, high-precision force sensor can collect force vibration signal, read its peak value respectively, calculate test essence using formula 6
Degree.
The measuring accuracy of dynamic force moment=(F1*b-M)/F1*b ... ... ... ... ... (6)
Wherein, F1 ... high-precision force sensor institute dynamometry peak value；It hangs down away from positioning device installation point at b ... work top center
Straight distance；The surveyed torque peak of M ... table top；
Although the detailed description and description of the specific embodiments of the present invention are given above, it should be noted that
We according to the present invention can conceive to carry out above embodiment various equivalent changes and modification, and generated function is made
It, should all be within protection scope of the present invention when with the spirit still covered without departing from specification and attached drawing.
Claims (8)
1. high-precision micro-vibration interference source tests the calibration method of verifying system, include the following steps：
1) dynamic and static force measuring accuracy, three axes direction demarcated on three change in coordinate axis direction are respectively defined as x, y, z
1.1) when demarcating to z to power Fz, by the way of the release of prefabricated power, the counterweight of given weight is specially placed on basis
At table top upper surface centralized positioning pin, turn-on data acquisition system acquires table top power time-domain signal, then removes counterweight suddenly, after
Continuous record table top power time-domain signal, reads the power time-domain signal peak value removed before and after counterweight, calculates the side Fz further according to formula (1)
To measuring accuracy：
Static force measurement accuracy=(m*g-F)/m*g ... ... ... ... ... ... (1)
Wherein, m ... counterbalance mass；The direction F ... z upper table surface power surveys resultant force, at this time F=Fz；
1.2) when demarcating to x to power Fx, static force, which is used, is demarcated in x to giving prefabricated power and then discharge by the way of prefabricated power,
Dynamic force is demarcated by the way of comparing with high-precision force sensor, and high-precision force sensor is specially fixed on workbench
At the center of face lower surface, in the same plane with lower 4 force snesors of work top, and dynamometry axis direction is x to by pulley
Device is fixed on the side surface upper part edge center position of basic platform, connects counterweight with rope, changes Impact direction by pulley, then
It is connected to high-precision force sensor；Height of pulley is adjusted, it is horizontal to make rope, and guarantee rope and high-precision force sensor dynamometry
Overlapping of axles, the gravity of counterweight pass to high-precision force sensor by rope and pass to work top again, the x that table top is subject to
Power and x suffered by high-precision force sensor to power it is consistent；
When carrying out static force test, turn-on data acquisition system acquires table top power time-domain signal, then discharges counterweight suddenly, continues
Record table top power time-domain signal；The power time-domain signal peak value for reading counterweight release front and back, calculates the direction Fx according to formula (1)
Measuring accuracy, at this point, F=Fx；When carrying out dynamic force test, turn-on data acquisition system acquires power time-domain signal, then with vertical
Head percussion counterweight bottom, makes it generate vibration signal, at this point, table top force snesor and high-precision force sensor can collect vibration
Dynamic signal, reads its peak value, calculates measuring accuracy using formula (2)：
Dynamic force test precision=(F1-F2)/F1 ... ... ... ... ... (2)
Wherein F1 ... high-precision force sensor institute dynamometry peak value；The surveyed resultant force peak value of F2 ... table top；
1.3) when demarcating to y direction force, the calibration mode of Fy is identical as Fx calibration mode；
2) dynamic and locked rotor torque measuring accuracy around three reference axis are demarcated, three axes direction is respectively defined as x, y, z
2.1) when to being demarcated around y-axis torque, to the torque of one known y-axis of work top, by with measured by table top
Y-axis torque compare, calculate y-axis torque measuring accuracy, the steel pole for being specially l by length by high-precision force sensor
It is fixed on work top upper surface center, after installing, high-precision force sensor is higher by l at the center of work top upper surface
Distance, dynamometry axis direction are x to pulley gear to be fixed on to the side surface upper part edge center position of basic platform, is connected with rope
Counterweight changes Impact direction by pulley, is connected to high-precision force sensor；Height of pulley is adjusted, keeps rope horizontal, guarantees
Rope and high-precision force sensor dynamometry overlapping of axles, the gravity of counterweight pass to high-precision force sensor by rope and pass through steel again
Bar passes to work top,.Table top is Weight gravity by power size, and the arm of force is l around y-axis torque；
When carrying out locked rotor torque test, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force sensor force
Time-domain signal then discharges counterweight suddenly, continues scoring table moment of area time-domain signal and high-precision force sensor force time-domain signal,
Counterweight release front and back table top y-axis torque time-domain signal and high-precision force sensor force time-domain signal peak value are read, according to formula (3)
To calculate the measuring accuracy of My：
Locked rotor torque measurement accuracy=(m*g*l-M)/m*g*l ... ... ... ... ... (3)
M ... counterbalance mass；L ... steel pole length；M ... table top institute measuring moment；
When carrying out dynamic moment testing, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force sensor force
Time-domain signal then taps counterweight bottom with hanging one's head, it is made to generate vibration signal, at this point, table top measures y-axis moment vibrations letter
Number, high-precision force sensor can collect force vibration signal, read its peak value respectively, calculate measuring accuracy using formula (4)：
The measuring accuracy of dynamic force moment=(F1*l-M)/F1*l ... ... ... ... ... (4)
Wherein, F1 ... high-precision force sensor institute dynamometry peak value；L ... steel pole length；M ... table top institute measuring moment peak value；
2.2) when to demarcating around x-axis torque, the calibration mode of Mx is identical as My calibration mode；
2.3) when to being demarcated around z-axis torque, to the torque known to work top one around z-axis, by being surveyed with table top
What is obtained compares around z-axis torque, calculates around z-axis torque measuring accuracy, and specific method is that positioning device is fixed to workbench
Face y is installed in positioning device to the position of side edge, high-precision force sensor；After installation, work top center is filled to positioning
The vertical range for the installation point set is b, and the dynamometry axis direction of high-precision force sensor and the x of table top are to identical, pulley gear peace
It mounted in basic platform x to side surface upper part edge, and is first preset in high-precision force sensor dynamometry axis direction, connects weight with rope
Code changes Impact direction by pulley, is connected to high-precision force sensor, adjusts height of pulley, keeps rope horizontal, guarantees rope
Rope and high-precision force sensor dynamometry overlapping of axles, the gravity of counterweight pass to high-precision force sensor by rope and pass through positioning again
Device passes to work top, and work top is counterweight weight by power size, and the arm of force is the torque around z-axis of b；It carries out static
When torque is tested, turn-on data acquisition system picking platform moment of area time-domain signal and high-precision force sensor force time-domain signal, and
Release counterweight, continuation scoring table moment of area time-domain signal and high-precision force sensor force time-domain signal, reading counterweight are released suddenly afterwards
Front and back table top z-axis torque time-domain signal and high-precision force sensor force time-domain signal peak value are put, is calculated according to the formula (5)
The measuring accuracy in the direction Mz；When carrying out dynamic moment testing, turn-on data acquisition system picking platform moment of area time-domain signal and height
Precision force snesor power time-domain signal, then taps counterweight bottom with hanging one's head, and so that it is generated vibration signal, at this point, table top measures
Moment vibrations signal, high-precision force sensor can collect force vibration signal, read its peak value respectively, utilize the formula (6)
Calculate measuring accuracy；
Locked rotor torque measurement accuracy=(m*g*b-M)/m*g*b ... ... ... ... ... (5)
M ... ... counterbalance mass；Vertical range of b ... the work top center away from positioning device installation point；M ... table top institute dynamometry
Square；
The measuring accuracy of dynamic force moment=(F1*b-M)/F1*b ... ... ... ... ... (6)
Wherein, F1... high-precision force sensor institute dynamometry peak value；B ... work top center is vertical away from positioning device installation point
Distance；M.. the surveyed torque peak of table top.
2. the method for claim 1, wherein demarcate to z to power Fz, pass through the value surveyed with high-precision force sensor
It compares to calculate the measuring accuracy of table top.
3. the method for claim 1, wherein high-precision force sensor is single shaft kistler9215 force snesor.
4. the method for claim 1, wherein static force, torque calibration are in such a way that Weight gravity discharges or loads.
5. the method for claim 1, wherein dynamic force calibration is in such a way that Dynamic High-accuracy responds synchronism detection.
6. the method for claim 1, wherein increased high-precision force sensor in dynamic force, torque caliberating device,
It can be measured simultaneously with table top force snesor.
7. the method for claim 1, wherein high-precision force sensor needs individually to be demarcated in face of calibrating table,
It is set to standard signal, the dynamic response for then measuring dynamic response signal measured by testing stand and high-precision force sensor
Signal compares, and obtains the measuring accuracy of its dynamic force, torque.
8. as described in claim 1, wherein positioning device is fixed on work top side, acts on to determine when carrying out Mz calibration
Position high-precision force sensor, and power free of losses suffered by high-precision force sensor is passed into work top.
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