CN105444949A - Moment-of-inertia test bench based on torque sensor - Google Patents
Moment-of-inertia test bench based on torque sensor Download PDFInfo
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- CN105444949A CN105444949A CN201510777720.3A CN201510777720A CN105444949A CN 105444949 A CN105444949 A CN 105444949A CN 201510777720 A CN201510777720 A CN 201510777720A CN 105444949 A CN105444949 A CN 105444949A
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- 238000000034 method Methods 0.000 claims abstract description 6
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- 230000007704 transition Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000013480 data collection Methods 0.000 claims description 3
- GQWNECFJGBQMBO-UHFFFAOYSA-N Molindone hydrochloride Chemical compound Cl.O=C1C=2C(CC)=C(C)NC=2CCC1CN1CCOCC1 GQWNECFJGBQMBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 8
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- 230000001133 acceleration Effects 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 3
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- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012937 correction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
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- 239000011435 rock Substances 0.000 description 1
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Classifications
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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
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/10—Determining the moment of inertia
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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
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/02—Details of balancing machines or devices
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a moment-of-inertia test bench based on a torque sensor. A torque motor is adopted to drive a workbench to rotate, the numerical values of a torque sensor and an angular velocity sensor under no-load and loaded conditions of the workbench are collected, and the moment of inertia of a tested object is calculated based on the numerical values. The moment-of-inertia test bench comprises a workbench, a torsion bar transmission mechanism, a driving device and an electric control system. The workbench is used for installing and positioning a tested object, and a special clamping mechanism for design is installed on the workbench. The torsion bar transmission mechanism is used for transmitting torque, and can bear the instantaneous torque when the torque motor is started and ensure that the torque output is stable at the start of test. The torsion bar transmission mechanism employs a torque sensor and an angular velocity sensor, and is easy to disassemble. The torque sensor is connected with a transmission shaft, and has the characteristics of high measurement precision and quick disassembly and calibration. The moment-of-inertia value is calculated by measuring the data of the torque sensor and the angular velocity sensor in the rotation process of the workbench, and the measurement result is of high repeatability.
Description
Technical field
The present invention relates to a kind of moment of inertia test board, specifically, relate to a kind of moment of inertia test board based on torque sensor; Belong to rotation inerttia field.
Background technology
Moment of inertia has important impact as the consistance etc. of an important design parameter on the kinetic stability of equipment, operability, maneuverability and aggregate motion, along with combining closely of machinery and automatic technology and computer technology, and various survey sensor can realize more and more higher accuracy requirement, how more convenient, fast, the moment of inertia measuring object accurately becomes a problem in the urgent need to address.Patent of invention CN102692264A discloses a kind of test board for quality, centroid position and moment of inertia and method of testing.This test platform comprises detent mechanism, clamp system, worktable, elevating mechanism, Power Component, housing, control box, electric control gear composition.This test board uses scrambler second differential to obtain the angular acceleration of system, and it is low that second differential method calculates angular acceleration precision, not obvious for angular acceleration change performance.This test board uses motor direct-drive worktable to swing, and because starting torque during electric motor starting is comparatively large, output torque is unstable, larger on the impact of torque sensor measurement result.This test board be quality, barycenter with moment of inertia integrated test test stand because working table movement mode is different, design specialized mechanism makes quality center of mass measure to separate with rotation inerttia and carry out, operation inconvenience, during test board rotation inerttia, bindiny mechanism between torque sensor and worktable is complicated, there is friction interference, error is brought to rotation inerttia.
Patent of invention CN103542982A discloses a kind of large structure Measurement System of " Moment of Inertia.This system can measure the multi-direction moment of inertia of object, by driving testee to rock, measures its damped oscillation frequency to calculate moment of inertia.Need to assemble equipment rotating cylinder assembly because direction of measurement changes, operation inconvenience.When testee is unsymmetric structure, due to trip bolt asymmetric adjustment, there is error in rotation inerttia.
Summary of the invention
In order to avoid the deficiency that prior art exists, overcome the now existing deficiency that moment of inertia test board efficiency is low, measuring accuracy is low, multiplicity is low, the present invention proposes a kind of moment of inertia test board based on torque sensor.Test board adopts torque sensor and angular-rate sensor, and when rotating by gathering many group worktable, torque sensor and angular-rate sensor data calculate testee moment of inertia, and have precision high, automaticity is high, and Measuring Time is short, easy and simple to handle.
The technical solution adopted for the present invention to solve the technical problems is: comprise worktable, torsion bar gear train, drive unit, electric-control system; Described worktable is rectangular configuration, is fixed with lateral fiducial bar and longitudinal datum strip above worktable, and between lateral fiducial bar and longitudinal datum strip, angle is 90 degree, and transition disc is positioned at work table rotation center;
Described torsion bar gear train comprises angular-rate sensor, thrust ball bearing lid, thrust ball bearing, thrust ball bearing seat, torsion bar sleeve, register pin, torsion bar, outer sleeve, deep groove ball bearing, insulated cylinder, isolation annulus, torque sensor, shaft coupling, thrust ball bearing lid one end is connected with transition disc, angular-rate sensor is positioned at thrust ball bearing and covers, thrust ball bearing lid and torsion bar sleeve connection, thrust ball bearing seat is fixed in frame, thrust ball bearing is arranged in thrust ball bearing seat, torsion bar sleeve is connected with thrust ball bearing internal diameter, torsion bar is positioned at torsion bar sleeve, and be connected by register pin with torsion bar sleeve, torsion bar sleeve is positioned at outer sleeve, a pair deep groove ball bearing is had between torsion bar sleeve and outer sleeve, insulated cylinder is had between deep groove ball bearing, isolation annulus is had between deep groove ball bearing and frame top board, outer sleeve is fixed on frame inside ceiling panel, torque sensor is connected by shaft coupling with torsion bar and transmission shaft respectively,
Described drive unit comprises torque motor, bearing seat, bearing cap, electromagnetic brake, electromagnetic clutch, transmission shaft, angular contact ball bearing, support deckle board, drive unit is positioned at frame, torque motor is fixed in the motor cabinet below electromagnetic clutch, torque motor output shaft is connected with electromagnetic clutch, electromagnetic brake is positioned at and supports below deckle board, electromagnetic clutch is connected with electromagnetic brake, electromagnetic brake is fixed on to support on deckle board and is connected with transmission shaft, support deckle board and torque sensor mount pad are connected, pair of horns contact ball bearing is arranged on transmission shaft by bearing seat and bearing cap,
Described electric-control system comprises signal acquiring system and control system, and signal acquiring system is to torque sensor and angular-rate sensor real-time data collection information; Control system performs an action for controlling test board, to the process of sensor image data, and calculates moment of inertia numerical value by industrial computer.
Torsion bar, transition disc, electromagnetic clutch and torque motor are coaxially installed.
Beneficial effect
A kind of moment of inertia test board based on torque sensor that the present invention proposes, torque motor is adopted to drive worktable to rotate, gathered by unloaded to worktable and torque sensor and angular-rate sensor when loading numerical value, calculate testee moment of inertia.Moment of inertia test board is made up of worktable, torsion bar gear train, drive unit, electric-control system; Worktable is used for installation and the location of testee, and according to the size of testee, design specialized clamping mechanism is installed on worktable.Torsion bar gear train is used for driving torque, can bear instantaneous torque when torque motor starts simultaneously, moment of torsion stable output when ensureing that test starts.Torsion bar gear train is equipped with angular-rate sensor, measures drive line angle speed.Torque sensor is connected with transmission shaft, have measuring accuracy high, dismantle and demarcate feature easily.Drive unit adopts torque motor to drive, and ensures that motor output torque is stablized.Drive unit, built with electromagnetic clutch, shields to test macro.
The present invention is based on the moment of inertia test board of torque sensor, for measuring object rotation inertia; Its measurement range is wide, and worktable is provided with datum strip, can according to the size design fixture of testee, and it is convenient to split.Test board automaticity is higher, and measuring principle is simple, and easy and simple to handle, by torque sensor and angular-rate sensor numerical value in surveying work platform turning course, carry out calculating moment of inertia numerical value, measurement result multiplicity is high.Adopt torque sensor and angular-rate sensor, convenient disassembly; Working table structure is simple, and assembling, fractionation fast, are convenient to the maintenance of test board.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, a kind of moment of inertia test board based on torque sensor of the present invention is described in further detail.
Fig. 1 is moment of inertia testing bench structure schematic diagram of the present invention.
Fig. 2 is worktable schematic diagram of the present invention.
Fig. 3 is Working table structure schematic diagram of the present invention.
Fig. 4 is torsion bar gear train schematic diagram of the present invention.
Fig. 5 is drive unit schematic diagram of the present invention.
In figure:
1. worktable 2. angular-rate sensor 3. frame 4. torque sensor 5. torque motor 6. lateral fiducial bar 7. longitudinal datum strip 8. transition disc 9. thrust ball bearing lid 10. thrust ball bearing 11. thrust ball bearing seat 12. torsion bar sleeve 13. register pin 14. torsion bar 15. insulated cylinder 16. outer sleeve 17. deep groove ball bearing 18. is isolated annulus 19. shaft coupling 20. and is supported deckle board 21. bearing seat 22. bearing cap 23. electromagnetic brake 24. electromagnetic clutch 25. transmission shaft 26. angular contact ball bearing
Specific embodiments
The present embodiment is a kind of moment of inertia test board based on torque sensor.
Consult Fig. 1 ~ Fig. 5, the present embodiment, based on the moment of inertia test board of torque sensor, is made up of worktable, torsion bar gear train, drive unit, electric-control system; Worktable 1 is rectangular configuration, and worktable 1 upper surface is installed with lateral fiducial bar 6 and longitudinal datum strip 7, and between lateral fiducial bar 6 and longitudinal datum strip 7, angle is 90 degree, and transition disc 8 is arranged on worktable 1 centre of gyration position.According to testee size design unit clamp during test object, be placed on lateral fiducial bar 6 and longitudinal datum strip 7 place on worktable 1, carry out the location of worktable 1 and fixture.
Torsion bar gear train comprises angular-rate sensor 2, thrust ball bearing lid 9, thrust ball bearing 10, thrust ball bearing seat 11, torsion bar sleeve 12, register pin 13, torsion bar 14, outer sleeve 16, deep groove ball bearing 17, insulated cylinder 15, isolation annulus 18, torque sensor 4, shaft coupling 19, thrust ball bearing lid 9 one end is connected with transition disc 8, angular-rate sensor 2 is arranged on thrust ball bearing lid 9, angular-rate sensor 2 direction of measurement axle and torsion bar 14 dead in line, ensure angular-rate sensor 2 measuring accuracy.Thrust ball bearing lid 9 is connected with torsion bar sleeve 12, and thrust ball bearing seat 11 is fixedly mounted in frame 3, and thrust ball bearing 10 is arranged in thrust ball bearing seat 11, for carrying worktable 1 vertical direction load.Torsion bar sleeve 12 is connected with thrust ball bearing 10 internal diameter, torsion bar is arranged in torsion bar sleeve 12, and be fixedly connected with by register pin 13 with torsion bar sleeve 12, torsion bar sleeve 12 is arranged in outer sleeve 16, a pair deep groove ball bearing 17 is had between torsion bar sleeve 12 and outer sleeve 16, have insulated cylinder 15 between two deep groove ball bearings 17, have between deep groove ball bearing 17 and frame 3 top board and isolate annulus 18, outer sleeve 16 is fixedly mounted on frame 3 inside ceiling panel.Two sounding rods are stretched out at torque sensor 4 two ends, and torque sensor 4 one end is connected by shaft coupling 19 with transmission shaft 25, and torque sensor 4 other end is connected by shaft coupling 19 with torsion bar 14, ensure that torque sensor 4 is measured axis and overlapped with torsion bar 14 axis.
Torsion bar 14 cross section is circular, and there is pin-and-hole its one end, and adopt register pin 13 to connect, the other end adopts spline joint.Can be twisted when torsion bar 14 applies moment of torsion around torsion bar axis distortion, and when applying moment of torsion increase, torsion bar 14 rotates around axis.Torsion bar 14 torsional deflection carrying peak torque between torque motor 5 starting torque and moment of torsion nominal torque, for overcoming moment of torsion mutation problems when torque motor 5 starts.
Drive unit comprises torque motor 5, bearing seat 21, bearing cap 22, electromagnetic brake 23, electromagnetic clutch 24, transmission shaft 25, angular contact ball bearing 26, support deckle board 20, drive unit is positioned at frame, torque motor 5 is fixed in the motor cabinet below electromagnetic clutch 24, torque motor 5 output shaft is connected with electromagnetic clutch 24, electromagnetic brake 23 is arranged on and supports below deckle board 20, electromagnetic clutch 24 is connected with electromagnetic brake 23, electromagnetic brake 23 is fixed on to support on deckle board 20 and is connected with transmission shaft 25, when torque motor 5 turns round, damping is produced to transmission shaft 25.Support deckle board 20 to be fixedly connected with torque sensor 4 mount pad, pair of horns contact ball bearing 26 is arranged on transmission shaft 25 by bearing seat 21 and bearing cap 22.Torsion bar 14, transition disc 8, electromagnetic clutch 24 are coaxially installed with torque motor 5.Torque motor 5 exports with constant-torque, ensures that in worktable 1 rotation process, output torque is stablized.
Electric-control system comprises signal acquiring system and control system, and signal acquiring system is to torque sensor and angular-rate sensor real-time data collection information; Control system performs an action for controlling test board, to the process of sensor image data; According to rotation inerttia principle, the ratio of torque sensor numerical value and angular velocity differential is moment of inertia, calculates moment of inertia numerical value by industrial computer.
The course of work:
Step one. standard body demarcates no load test; Torque motor 5 starts, drive transmission shaft 25 to rotate by electromagnetic clutch 24, transmission shaft 25 is connected with torsion bar gear train, and torsion bar gear train is connected with worktable 1, thus drive worktable 1 to rotate, record many groups torque sensor 4 and angular-rate sensor 2 data.
Step 2. standard body is demarcated and is loaded test; Standard body is placed on worktable 1, standard body both sides are adjacent to lateral fiducial bar 6 and longitudinal datum strip 7 on worktable 1; Torque motor 5 starts, and drives worktable 1 to rotate with constant-torque, record many groups torque sensor 4 and angular-rate sensor 2 data.Standard body moment of inertia is known, and with testee moment of inertia numerical approximation.
Step 3. standard body calibrated and calculated; Moment of inertia is defined as J=M/ β, and J is the moment of inertia of Objects around A rotating shaft, and β is angular acceleration, and wherein angular acceleration β can have angular velocity differential to obtain; Known standard body moment of inertia J
mark, system moment of inertia J when sensing data calculating standard body is unloaded time unloaded by demarcation
0, when being loaded by demarcation, sensing data calculates system moment of inertia J when standard body loads
1, standard body moment of inertia J
mapping=J
1-J
0, solve calibration coefficient K=J
mark/ J
mapping.
Step 4. testee no load test; According to testee size design special clamping mechanism, clamping mechanism is positioned on worktable 1, is adjacent to lateral fiducial bar 6 and longitudinal datum strip 7; Torque motor 5 starts, and drives worktable 1 to rotate with constant-torque, now record many groups torque sensor 4 and angular-rate sensor 2 data.
Step 5. testee loads test; Loaded in the clamping mechanism be positioned on worktable 1 by testee, torque motor 5 starts, and drives worktable 1 to rotate with constant-torque, now record many groups torque sensor 4 and angular-rate sensor 2 data.
Step 6. testee moment of inertia calculates; Time unloaded by testee sensing data calculate testee unloaded time system moment of inertia J
0, when being loaded by testee, sensing data calculates system moment of inertia J when testee loads
1, calculate object rotation inertia J=J
1-J
0; Testee moment of inertia J is obtained through calibration coefficient correction
revise=KgJ.
Claims (2)
1. based on a moment of inertia test board for torque sensor, it is characterized in that: comprise worktable, torsion bar gear train, drive unit, electric-control system; Described worktable is rectangular configuration, is fixed with lateral fiducial bar and longitudinal datum strip above worktable, and between lateral fiducial bar and longitudinal datum strip, angle is 90 degree, and transition disc is positioned at work table rotation center;
Described torsion bar gear train comprises angular-rate sensor, thrust ball bearing lid, thrust ball bearing, thrust ball bearing seat, torsion bar sleeve, register pin, torsion bar, outer sleeve, deep groove ball bearing, insulated cylinder, isolation annulus, torque sensor, shaft coupling, thrust ball bearing lid one end is connected with transition disc, angular-rate sensor is positioned at thrust ball bearing and covers, thrust ball bearing lid and torsion bar sleeve connection, thrust ball bearing seat is fixed in frame, thrust ball bearing is arranged in thrust ball bearing seat, torsion bar sleeve is connected with thrust ball bearing internal diameter, torsion bar is positioned at torsion bar sleeve, and be connected by register pin with torsion bar sleeve, torsion bar sleeve is positioned at outer sleeve, a pair deep groove ball bearing is had between torsion bar sleeve and outer sleeve, insulated cylinder is had between deep groove ball bearing, isolation annulus is had between deep groove ball bearing and frame top board, outer sleeve is fixed on frame inside ceiling panel, torque sensor is connected by shaft coupling with torsion bar and transmission shaft respectively,
Described drive unit comprises torque motor, bearing seat, bearing cap, electromagnetic brake, electromagnetic clutch, transmission shaft, angular contact ball bearing, support deckle board, drive unit is positioned at frame, torque motor is fixed in the motor cabinet below electromagnetic clutch, torque motor output shaft is connected with electromagnetic clutch, electromagnetic brake is positioned at and supports below deckle board, electromagnetic clutch is connected with electromagnetic brake, electromagnetic brake is fixed on to support on deckle board and is connected with transmission shaft, support deckle board and torque sensor mount pad are connected, pair of horns contact ball bearing is arranged on transmission shaft by bearing seat and bearing cap,
Described electric-control system comprises signal acquiring system and control system, and signal acquiring system is to torque sensor and angular-rate sensor real-time data collection information; Control system performs an action for controlling test board, to the process of sensor image data, and calculates moment of inertia numerical value by industrial computer.
2. the moment of inertia test board based on torque sensor according to claim 1, is characterized in that: torsion bar, transition disc, electromagnetic clutch and torque motor are coaxially installed.
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CN201510777720.3A CN105444949B (en) | 2015-11-13 | 2015-11-13 | A kind of rotary inertia testboard based on torque sensor |
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CN201510777720.3A CN105444949B (en) | 2015-11-13 | 2015-11-13 | A kind of rotary inertia testboard based on torque sensor |
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CN105444949B CN105444949B (en) | 2018-03-30 |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106500912A (en) * | 2016-10-17 | 2017-03-15 | 广州汽车集团股份有限公司 | Rotation inerttia device |
CN108731877A (en) * | 2017-04-21 | 2018-11-02 | 北京航天计量测试技术研究所 | A kind of high precision measuring device of large-scale heavy duty rotary inertia |
CN109406138A (en) * | 2018-12-18 | 2019-03-01 | 合肥森曼智能科技有限公司 | A kind of survey starting torque and determine torque measuring angle of revolution mechanism |
CN110595684A (en) * | 2019-10-21 | 2019-12-20 | 吉林大学 | Torque calibration device for linear motor loading |
CN111060252A (en) * | 2019-12-30 | 2020-04-24 | 綦江齿轮传动有限公司 | Rotational inertia test method |
CN112197961A (en) * | 2020-09-22 | 2021-01-08 | 施启明 | Testing device for testing anti-torque performance of elevator main shaft through inertial impact |
CN112697345A (en) * | 2020-12-04 | 2021-04-23 | 哈尔滨工业大学 | Method and device for measuring rigid body inertia tensor |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106500912A (en) * | 2016-10-17 | 2017-03-15 | 广州汽车集团股份有限公司 | Rotation inerttia device |
CN106500912B (en) * | 2016-10-17 | 2019-05-24 | 广州汽车集团股份有限公司 | Rotational inertia measuring device |
CN108731877A (en) * | 2017-04-21 | 2018-11-02 | 北京航天计量测试技术研究所 | A kind of high precision measuring device of large-scale heavy duty rotary inertia |
CN109406138A (en) * | 2018-12-18 | 2019-03-01 | 合肥森曼智能科技有限公司 | A kind of survey starting torque and determine torque measuring angle of revolution mechanism |
CN109406138B (en) * | 2018-12-18 | 2021-06-29 | 合肥森曼智能科技有限公司 | Mechanism for measuring starting torque and determining torque and rotation angle |
CN110595684A (en) * | 2019-10-21 | 2019-12-20 | 吉林大学 | Torque calibration device for linear motor loading |
CN111060252A (en) * | 2019-12-30 | 2020-04-24 | 綦江齿轮传动有限公司 | Rotational inertia test method |
CN112197961A (en) * | 2020-09-22 | 2021-01-08 | 施启明 | Testing device for testing anti-torque performance of elevator main shaft through inertial impact |
CN112697345A (en) * | 2020-12-04 | 2021-04-23 | 哈尔滨工业大学 | Method and device for measuring rigid body inertia tensor |
CN112697345B (en) * | 2020-12-04 | 2023-04-07 | 哈尔滨工业大学 | Method and device for measuring rigid body inertia tensor |
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