CN102445601A - Dynamic contact resistance testing device of conducting ring - Google Patents
Dynamic contact resistance testing device of conducting ring Download PDFInfo
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- CN102445601A CN102445601A CN2011102849226A CN201110284922A CN102445601A CN 102445601 A CN102445601 A CN 102445601A CN 2011102849226 A CN2011102849226 A CN 2011102849226A CN 201110284922 A CN201110284922 A CN 201110284922A CN 102445601 A CN102445601 A CN 102445601A
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- contact resistance
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- dynamic contact
- conducting ring
- electric bridge
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Abstract
The invention relates to a dynamic contact resistance testing device of a conducting ring, and the dynamic contact resistance testing device is mainly and technically characterized by comprising a voltage stabilization constant current source, bridges formed by precision resistors, adjustable resistors used for fine adjusting the bridges, and a multi-pen recorder, wherein the voltage stabilization constant current source is connected with input ends of the bridges to supply power to the whole testing device; voltage output ends of the bridges are connected with the multi-pen recorder which is used for recording output voltages of the bridges; the adjustable resistors are respectively connected in series onto a bridge arm of the bridges; one end of the power output device is connected onto one end of the voltage stabilization constant current source; and the other end of the power output device is connected with the inner parts of the bridges to form a testing loop. The dynamic contact resistance testing device has a reasonable design, multiple ways of bridges and the multi-pen recorder are adopted by the dynamic contact resistance testing device to dynamically test contact resistance in the power output device, human factors in the testing process are reduced, a function of continuous and automatic testing is performed, the working efficiency and the testing precision are improved, and the dynamic contact resistance testing device can be widely used in the field of the testing of the dynamic contact resistance of the conducting ring.
Description
Technical field
The invention belongs to the conducting ring field, especially a kind of conducting ring dynamic contact resistance proving installation.
Background technology
Conducting ring has obtained using widely in Aeronautics and Astronautics, navigation and exact instrument.Conducting ring can be realized two signals transmission between relatively rotating parts, also we can say, any have in relative rotation the transmission conducting ring all capable of using of the electric signal between the parts accomplish.The main performance index of power transmitting device has contact resistance and moment of friction; Dynamic testing method for contact resistance mainly adopts digital milliohmmeter to carry out the manual testing at present; The problem of its existence is: 1, measuring accuracy is low, can only be applicable to the power transmitting device that accuracy requirement is not high; 2, can not carry out continuous dynamic test, its efficient is lower.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of efficient, accurately and can carry out the conducting ring dynamic contact resistance proving installation of continuous dynamic test.
The present invention solves its technical matters and takes following technical scheme to realize:
A kind of conducting ring dynamic contact resistance proving installation; The electric bridge that comprises the pressure-stabilizing constant flow source, constitutes by precision resistance, adjustable resistance and the multi-pen recorder that is used to finely tune electric bridge; The input end that the pressure-stabilizing constant flow source is connected on electric bridge is the whole testing device power supply; The voltage output end of electric bridge connects the output voltage that multi-pen recorder is used for recording bridge; Adjustable resistance is connected on the brachium pontis of electric bridge, and an end of power transmitting device is connected an end in pressure-stabilizing constant flow source, and the other end of power transmitting device is connected to and constitutes a test loop in the electric bridge.
And; Described electric bridge, adjustable resistance are N; Adjustable resistance is connected on respectively on the brachium pontis on N the electric bridge, and power transmitting device comprises N contact resistance, and an end of N contact resistance is connected on the end in pressure-stabilizing constant flow source; The other end of N contact resistance is connected in the gang socket, and this gang socket is connected respectively to through N toggle switch and constitutes N test loop in N the electric bridge.
And described N is greater than 1.
Advantage of the present invention and good effect are:
The present invention is reasonable in design; It adopts multichannel electric bridge and multi-pen recorder that the contact resistance in the power transmitting device is carried out dynamic test; Reduced the human factor in the test process; Have continuous, autorun, improved work efficiency and measuring accuracy, can be widely used in the field tests of conducting ring dynamic contact resistance.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is that circuit of the present invention connects synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is done further detailed description:
A kind of conducting ring dynamic contact resistance proving installation is tested realization according to electrical bridge principle.Test philosophy of the present invention is as shown in Figure 1, and test circuit is by the measuring resistance R of similar resistance
1-1, R
1-2R
N-1, R
N-2Constitute N stable electric bridge, the voltage V that exports at this moment according to electrical bridge principle
1, V
2V
NBe zero, with each road contact resistance R of power transmitting device (conducting ring)
1R
nAfter introducing each electric bridge respectively, the balance of each electric bridge is destroyed, the voltage V of each electric bridge output
1, V
2V
NAll can carry out sample record, at last the magnitude of voltage of record can be extrapolated the value of each contact resistance R in the power transmitting device through the bridge balance theory through multi-pen recorder.With first electric bridge is example:
During bridge balance:
This moment voltage V
1=0
When inserting the resistance R 1 of conducting ring, voltage V
1No longer be 0, output voltage V 1 and the R of this moment
1Relation following:
So can release the value of conducting ring resistance R 1.The resistance R of the conducting ring in other electric bridges
NBy that analogy.
According to above-mentioned test philosophy, be that the present invention will be described for example to test 20 conducting ring contact electric resistances below.As shown in Figure 2, the gang socket that comprise electric bridge that 3V pressure-stabilizing constant flow source, ten be made up of precision resistance 3, ten toggle switches 1, is connected with ten toggle switches 2, ten are used to finely tune the adjustable resistance 5 of electric bridge, a multi-pen recorder 4.The input end that 3V pressure-stabilizing constant flow source is connected to ten electric bridges is the whole testing device power supply; The voltage output end of ten electric bridges connects the output voltage that multi-pen recorder can write down ten electric bridges respectively; Ten adjustable resistances are connected on respectively on the brachium pontis of ten electric bridges; One of conducting ring terminates at an end in 3V pressure-stabilizing constant flow source; The other end of conducting ring is connected with gang socket, and promptly an end of ten contact resistances in the conducting ring connects an end in 3V pressure-stabilizing constant flow source, on the other end of ten contact resistances and the different jacks that are connected respectively to socket; This gang socket is connected respectively in ten electric bridges through ten groups of toggle switches, thereby the contact resistance in the power transmitting device is connected in the different bridge circuits.
The present invention is when testing the contact resistance of conducting ring, and the lead-in wire with 20 brushes docks in twos earlier: 1-2, and 3-4 ... 17-18,19-20, the lead-in wire of slip ring forms ten pairs of loops, conducting ring is installed in the duty of imitation conducting ring on the rotating mechanism.Ten groups of conducting ring slip rings lead-in wire is linked into respectively on the arm in ten electric bridges of proving installation; Ten electric bridges of feasible balance originally are owing to the resistance that inserts conducting ring has become uneven; Corresponding electric bridge just produces voltage output; Output voltage is directly write down and reflects by multi-pen recorder, can extrapolate the value of each contact resistance R in the power transmitting device through the bridge balance theory, thereby reaches the purpose of test dynamic resistance.At the beginning of the test beginning, the adjustment adjustable resistance can be adjusted the position of recording pointer on printer paper of registering instrument.
It is emphasized that; Embodiment of the present invention is illustrative; Rather than it is determinate; Therefore the present invention is not limited to the embodiment described in the embodiment, and every other embodiments that drawn by those skilled in the art's technical scheme according to the present invention belong to the scope that the present invention protects equally.
Claims (3)
1. conducting ring dynamic contact resistance proving installation; It is characterized in that: the electric bridge that comprises the pressure-stabilizing constant flow source, constitutes by precision resistance, adjustable resistance and the multi-pen recorder that is used to finely tune electric bridge; The input end that the pressure-stabilizing constant flow source is connected on electric bridge is the whole testing device power supply; The voltage output end of electric bridge connects the output voltage that multi-pen recorder is used for recording bridge; Adjustable resistance is connected on the brachium pontis of electric bridge, and an end of power transmitting device is connected an end in pressure-stabilizing constant flow source, and the other end of power transmitting device is connected to and constitutes a test loop in the electric bridge.
2. conducting ring dynamic contact resistance proving installation according to claim 1; It is characterized in that: described electric bridge, adjustable resistance are N; Adjustable resistance is connected on respectively on the brachium pontis on N the electric bridge, and power transmitting device comprises N contact resistance, and an end of N contact resistance is connected on the end in pressure-stabilizing constant flow source; The other end of N contact resistance is connected in the gang socket, and this gang socket is connected respectively to through N toggle switch and constitutes N test loop in N the electric bridge.
3. conducting ring dynamic contact resistance proving installation according to claim 2, it is characterized in that: described N is greater than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102849226A CN102445601A (en) | 2011-09-23 | 2011-09-23 | Dynamic contact resistance testing device of conducting ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102849226A CN102445601A (en) | 2011-09-23 | 2011-09-23 | Dynamic contact resistance testing device of conducting ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102445601A true CN102445601A (en) | 2012-05-09 |
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|---|---|---|---|
| CN2011102849226A Pending CN102445601A (en) | 2011-09-23 | 2011-09-23 | Dynamic contact resistance testing device of conducting ring |
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| CN (1) | CN102445601A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692565A (en) * | 2012-06-14 | 2012-09-26 | 哈尔滨工业大学 | Method for detecting quality of conductive sliding ring |
| CN103604993A (en) * | 2013-09-12 | 2014-02-26 | 陕西航天导航设备有限公司 | Measuring device and measuring method for dynamic contact resistors of conductive devices |
| CN104360162A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Live line measurement device for contact resistance of high voltage loop |
| CN104865472A (en) * | 2015-06-01 | 2015-08-26 | 杭州全盛机电科技有限公司 | Aerogenerator slip ring detection system and detection method thereof |
| CN108196126A (en) * | 2017-12-29 | 2018-06-22 | 北京华航无线电测量研究所 | A kind of spacecraft slip ring resistance states monitoring device and method |
| CN108387782A (en) * | 2018-02-01 | 2018-08-10 | 华南理工大学 | The electric bridge experimental measurement method of ground wire and preformed armor rods contact port contact resistance |
| CN109655668A (en) * | 2018-12-24 | 2019-04-19 | 陕西航天时代导航设备有限公司 | Electric installation dynamic contact resistance test method |
| CN110411628A (en) * | 2019-07-01 | 2019-11-05 | 东南大学 | A kind of sliding ring type wheel force snesor dynamic transmission error correcting system and its bearing calibration |
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| CN87200832U (en) * | 1987-01-22 | 1987-11-04 | 王伟华 | Intelligence-exploiting machine for children |
| CN1760642A (en) * | 2005-10-28 | 2006-04-19 | 中国船舶重工集团公司第七一一研究所 | Temperature-pressure sensor |
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| CN87200832U (en) * | 1987-01-22 | 1987-11-04 | 王伟华 | Intelligence-exploiting machine for children |
| CN1760642A (en) * | 2005-10-28 | 2006-04-19 | 中国船舶重工集团公司第七一一研究所 | Temperature-pressure sensor |
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| 倪新蕾: "非平衡电桥的输出特性研究", 《大学物理》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692565A (en) * | 2012-06-14 | 2012-09-26 | 哈尔滨工业大学 | Method for detecting quality of conductive sliding ring |
| CN103604993A (en) * | 2013-09-12 | 2014-02-26 | 陕西航天导航设备有限公司 | Measuring device and measuring method for dynamic contact resistors of conductive devices |
| CN104360162A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Live line measurement device for contact resistance of high voltage loop |
| CN104865472A (en) * | 2015-06-01 | 2015-08-26 | 杭州全盛机电科技有限公司 | Aerogenerator slip ring detection system and detection method thereof |
| CN104865472B (en) * | 2015-06-01 | 2018-01-12 | 杭州全盛机电科技有限公司 | Wind-power slip ring detecting system and its detection method |
| CN108196126A (en) * | 2017-12-29 | 2018-06-22 | 北京华航无线电测量研究所 | A kind of spacecraft slip ring resistance states monitoring device and method |
| CN108196126B (en) * | 2017-12-29 | 2020-03-27 | 北京华航无线电测量研究所 | Spacecraft slip ring resistance state monitoring device and method |
| CN108387782A (en) * | 2018-02-01 | 2018-08-10 | 华南理工大学 | The electric bridge experimental measurement method of ground wire and preformed armor rods contact port contact resistance |
| CN108387782B (en) * | 2018-02-01 | 2019-10-18 | 华南理工大学 | The electric bridge experimental measurement method of ground wire and preformed armor rods contact port contact resistance |
| CN109655668A (en) * | 2018-12-24 | 2019-04-19 | 陕西航天时代导航设备有限公司 | Electric installation dynamic contact resistance test method |
| CN109655668B (en) * | 2018-12-24 | 2021-01-08 | 陕西航天时代导航设备有限公司 | Method for testing dynamic contact resistance of conductive device |
| CN110411628A (en) * | 2019-07-01 | 2019-11-05 | 东南大学 | A kind of sliding ring type wheel force snesor dynamic transmission error correcting system and its bearing calibration |
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Application publication date: 20120509 |