CN1131418C - Dynamic small-thrust automatic measuring device - Google Patents
Dynamic small-thrust automatic measuring device Download PDFInfo
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- CN1131418C CN1131418C CN 99121886 CN99121886A CN1131418C CN 1131418 C CN1131418 C CN 1131418C CN 99121886 CN99121886 CN 99121886 CN 99121886 A CN99121886 A CN 99121886A CN 1131418 C CN1131418 C CN 1131418C
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- balance
- cutter
- thrust
- measured object
- indifferent equilibrium
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The invention discloses a dynamic low-thrust automatic measuring device. The device comprises a thrust display system, a random balance system and a fixing part, wherein the random balance system consists of a balance beam, a balance gyro assembly, a balance middle knife, a measured object fixing frame, a torquer, a speed sensor and a displacement sensor, wherein the balance gyro assembly is arranged on the balance beam. The invention provides a random balance system structure, which can eliminate the influence of the dead weight of a measured object and the introduction of an air path and a circuit on the thrust measurement, realize the real-time accurate measurement of dynamic small thrust, and has the advantages of simple structure and the like.
Description
The present invention relates to the equipment of a kind of measurement, relate in particular to a kind of automatic measurer with low dynamic push than the low thrust of weight body generation.
In research and production, usually need the very unsettled low thrust that produces than the weight body is measured, at present, the equipment of this class measurement adopts flexible overhung construction usually both at home and abroad, with the measured object flexible article, as: steel band, suspentions such as suspension wire, and gas circuit, circuit directly links to each other with measured object, its automatic measure portion is not clearly eliminated the object deadweight and is introduced gas circuit, circuit is to the error of the influence and the formation of thrust, defective the PID principle that adopts as Russia just exists, measuring accuracy is low, is about 2%, can not satisfy the research and production mission requirements well.
The purpose of this invention is to provide that a kind of measuring accuracy is higher, range broad, automatic measurer with low dynamic push simple in structure.
The object of the present invention is achieved like this:
It comprises the thrust display system, the indifferent equilibrium system, fixed part, measure and demarcate part and original position calibrated section, wherein the indifferent equilibrium system is by balance beam and the balance top assembly that is installed on the balance beam, cutter in the balance, measured object, measured object fixed mount and torquer, speed pickup, displacement transducer is formed, fixed part is by affixed successively frame plate I, frame plate II and adjustable support leg are formed, torquer, speed pickup, an end of cutter edge bearing is fixed in respectively on the frame plate I in displacement transducer and the balance, speed pickup, the other end of displacement transducer and torquer is connected the thrust display system by a sampling resistor.
By adjusting balance top assembly the barycenter of indifferent equilibrium of the present invention system is adjusted in the balance on the cutter blade, made it become the indifferent equilibrium state.Be balance beam in any one angle, can indifferent equilibrium.When the present invention is transferred to the indifferent equilibrium state, demarcate with original position calibration after, just can carry out the automatic measurement of thrust.If measured object has circuit during the introducing of gas circuit, can be in the balance of indifferent equilibrium system on the height of the extended line direction of cutter blade, affixed one group of knife on balance beam, this group knife connects the electrode of measured object, the edge bearing corresponding with it is installed on the fixed part, and this edge bearing connects external electrode.The vertical of cutter blade is provided with corrugated tube in the balance of indifferent equilibrium system, this corrugated tube upper end is connected with fixed part and communicates with extraneous source of the gas, its lower end links to each other with the measured object gas circuit, it is identical to the way of the influence of thrust with the elimination deadweight to the influence of the restoring force of indifferent equilibrium system generation to eliminate its corrugated tube, all is to adopt adjustment balance top assembly to eliminate.
Because technique scheme adopts the structural principle of balance,electromagnetic, the indifferent equilibrium system is set, the measured object deadweight is separated with the thrust of its generation, eliminated the influence of measured object deadweight effectively, also solved the circuit of introducing because of measured object, gas circuit is to the influence of the additive error of thrust measurement generation, and adopt the standard test weight m of measurement demarcation part and the original position calibrating weight mo of original position calibrated section that the present invention is calibrated, therefore, compared with prior art, the present invention has improved the measuring accuracy of dynamic low thrust, the range broad, 10～100mN measuring accuracy is that 0.5%, 100～1000mN measuring accuracy is 0.05%, has realized accurately measuring in real time of dynamic low thrust, in addition, it also has advantages of simple structure and simple.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is a fundamental diagram of the present invention.
Referring to accompanying drawing 1, the present invention includes the thrust display system, the indifferent equilibrium system, fixed part, measure and demarcate part 10 and original position calibrated section 8, wherein the indifferent equilibrium system is by balance beam 1 and the balance top assembly 14 that is installed on the balance beam 1, cutter 13 in the balance, measured object 9, measured object fixed mount 6 and torquer 11, speed pickup 3, displacement transducer 2 is formed, fixed part is by frame plate I4, frame plate II5 and adjustable support leg 7 are formed, frame plate I4, be connected between the frame plate II5, adjustable support leg 7 is fixed on the frame plate II5, torquer 11, speed pickup 3, an end of cutter edge bearing 12 is fixed in respectively on the frame plate I4 in displacement transducer 2 and the balance, speed pickup 3, the other end of displacement transducer 2 and torquer 11 is connected the thrust display system by a sampling resistor.According to technique scheme, measured object 9 is connected with balance beam 1 by measured object fixed mount 6, guarantees during installation that the thrust direction of measured object 9 generations is parallel with balance beam 1, so that accurately reflect the power value of thrust F; Guarantee the minimum perpendicular distance L between cutter 13 blades in the pulley tangent line of original position calibrated section 8 and the balance and measure the barycenter of demarcating part 10 and balance in minimum horizontal distance L between cutter 13 blades
1Strict equating,, the effect of the pulley by original position calibrated section 8 applies an analog force m in the direction of thrust F
oG, in order to pick-up unit accurately and reliably whether, standard test weight m can demarcate the present invention.
Referring to accompanying drawing 1, accompanying drawing 2, because measured object 9 generally all has the introducing of circuit, the additive error that this part is brought can not be ignored, adopt following method can eliminate this additional error: the height of the extended line direction of cutter 13 blades in the balance of indifferent equilibrium system, one group of fixed installation is used to connect one group of knife 15 of the electrode that measured object 9 introduces on balance beam, corresponding with it edge bearing 18 that is used to connect external electrode 19 adopts flat edge bearings and is installed in fixed part, constitute the electrode of one group of mutually insulated, measured object 9 is introduced several wires and is just disposed several corresponding with it knife 15 thereupon.
If have the introducing of gas circuit during measured object 9 (such as electrical rocket) work, this additive error influence is very big, adopting following method can eliminate this influences than mistake: the vertical of cutter 13 blades is provided with corrugated tube 16 in the balance of indifferent equilibrium system, these corrugated tube 16 upper ends are connected with fixed part and communicate with extraneous source of the gas 17, its lower end links to each other with measured object 9, the restoring force that 16 pairs of indifferent equilibrium systems of corrugated tube produce is eliminated by the height of adjustment top assembly 14.
Referring to accompanying drawing 3, working routine of the present invention and principle of work are such: at first, by adjusting balance top assembly 14 barycenter of indifferent equilibrium system is transferred in the balance on cutter 13 blades, make it become the indifferent equilibrium state, be that balance beam 1 is in any one angle, can balance, after being transferred to the indifferent equilibrium state, just can demarcate with original position and calibrate, carried out the measurement of thrust, thrust F has a moment M to cutter in the balance 13, makes balance beam 1 produce a tiny inclination angle thereupon, the one signal U of displacement transducer 2 outputs at this moment
1, speed pickup 3 is also exported a signal U simultaneously
2, the output signal of the two is amplified through behind the sampling resistor through amplifier, gives torquer 11 current signal I, and at this moment, current signal I does not comprise the rate signal that speed pickup 3 produces, and during balance, the damping current that rate signal produces is zero.Under the effect of this current signal I, torquer produces an electromagnetism restoring force F
1, F
1Cutter in the balance 13 is produced an electromagnetism countermoment M
1, M
1Reverse with M, make balance beam 1 balance.Voltage on the sampling resistor shows in the thrust display system by demarcating, and reaches the purpose that accurately measures thrust F.The thrust display system adopts computer data acquiring, processing.The present invention clearly proposes the indifferent equilibrium system architecture on theory and practice, eliminate measured object deadweight and gas circuit thereof, circuit effectively and introduce influence to thrust measurement, reaches the higher purpose of measuring accuracy.
Claims (5)
1. automatic measurer with low dynamic push, it comprises the thrust display system, it is characterized in that: it also comprises the indifferent equilibrium system, fixed part, measure and demarcate part (10) and original position calibrated section (8), described indifferent equilibrium system is by balance beam (1) and be installed in balance top assembly (14) on the balance beam (1), cutter in the balance (13), measured object (9), measured object fixed mount (6) and torquer (11), speed pickup (3), displacement transducer (2) is formed, described fixed part is by affixed successively frame plate I (4), frame plate II (5) and adjustable support leg (7) are formed, torquer (11), speed pickup (3), an end of cutter edge bearing (12) is fixed in respectively on the frame plate I (4) in displacement transducer (2) and the balance, speed pickup (3), the other end of displacement transducer (2) and torquer (11) is connected the thrust display system by a sampling resistor.
2. automatic measurer with low dynamic push according to claim 1, it is characterized in that: the height of cutter (13) blade extended line direction in the balance of indifferent equilibrium system, go up fixedly connected one group of knife (15) at balance beam (1), the edge bearing corresponding with it (18) adopts flat edge bearing and is installed on the fixed part.
3. automatic measurer with low dynamic push according to claim 1, it is characterized in that: the vertical of cutter (13) blade is provided with corrugated tube (16) in the balance of indifferent equilibrium system, this corrugated tube (16) upper end is connected with fixed part and communicates with extraneous source of the gas, and its lower end links to each other with measured object (9).
4. automatic measurer with low dynamic push according to claim 1 is characterized in that: the minimum horizontal distance L in the barycenter of minimum perpendicular distance L in the pulley tangent line of described original position calibrated section (8) and the balance of indifferent equilibrium system between cutter (13) blade and described measurement demarcation part (10) and the balance of indifferent equilibrium system between cutter (13) blade
1Equate.
5. automatic measurer with low dynamic push according to claim 1 is characterized in that: described thrust display system employing numerical table demonstration or computer data acquiring, processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99121886 CN1131418C (en) | 1999-10-22 | 1999-10-22 | Dynamic small-thrust automatic measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99121886 CN1131418C (en) | 1999-10-22 | 1999-10-22 | Dynamic small-thrust automatic measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1255627A CN1255627A (en) | 2000-06-07 |
| CN1131418C true CN1131418C (en) | 2003-12-17 |
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ID=5282172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99121886 Expired - Lifetime CN1131418C (en) | 1999-10-22 | 1999-10-22 | Dynamic small-thrust automatic measuring device |
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| Country | Link |
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| CN (1) | CN1131418C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063231B (en) * | 2013-01-08 | 2015-08-19 | 中国船舶重工集团公司第七0四研究所 | For the anti-dither beam of small torque calibration device |
| CN103335769B (en) * | 2013-07-03 | 2016-04-13 | 中国科学院力学研究所 | A kind of electric propulsion device low force measurement mechanism |
| CN105181221A (en) * | 2015-09-24 | 2015-12-23 | 北京精密机电控制设备研究所 | Cold air nozzle thrust calibration device and installation method thereof |
| CN106840591B (en) * | 2016-12-29 | 2019-04-30 | 中国航天空气动力技术研究院 | A kind of experimental rig directly measuring jet flow thrust |
| CN108168839B (en) * | 2018-01-05 | 2020-09-22 | 中国海洋大学 | Experimental device for research interior solitary wave is to influence of minor diameter upright pile |
| CN110307925B (en) * | 2019-06-26 | 2020-11-17 | 北京航空航天大学 | Micro-thrust frame precision measuring device and measuring method |
-
1999
- 1999-10-22 CN CN 99121886 patent/CN1131418C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1255627A (en) | 2000-06-07 |
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| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: China Great Wall Industrial Corp. Assignor: No.1 Measuring and Testing Research Inst., China Astronautic Industrial Gen. Cor Contract fulfillment period: 2008.12.10 to 2018.12.9 Contract record no.: 2009110000266 Denomination of invention: Automatic measurer with low dynamic push Granted publication date: 20031217 License type: Exclusive license Record date: 2009.11.4 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.10 TO 2018.12.9; CHANGE OF CONTRACT Name of requester: CHINA GREAT WALL INDUSTRY HEAD CO.,LTD. Effective date: 20091104 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20031217 |