CN203275987U - Multiple vibration platform synchronization vibration control system based on single power amplifier - Google Patents
Multiple vibration platform synchronization vibration control system based on single power amplifier Download PDFInfo
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- CN203275987U CN203275987U CN201320276121XU CN201320276121U CN203275987U CN 203275987 U CN203275987 U CN 203275987U CN 201320276121X U CN201320276121X U CN 201320276121XU CN 201320276121 U CN201320276121 U CN 201320276121U CN 203275987 U CN203275987 U CN 203275987U
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- power amplifier
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- shaking table
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model relates to the technical field of multiple vibration platform shunt excitation vibration test, and specifically discloses a multiple vibration platform synchronization vibration control system based on a single power amplifier. The control system comprises a vibration control instrument, the power amplifier and N vibration platforms. N vibration platforms are connected in parallel. Both poles of the moving coil are respectively connected with both poles of O+ and O- of a drive signal output by the power amplifier. The drive voltages imposed by the power amplifier on N vibration platforms are the same. The power amplifier is connected with the vibration control instrument. The vibration control instrument controls the synchronization vibration of N vibration platforms through the power amplifier. According to the multiple vibration platform synchronization vibration control system based on the single power amplifier, which is provided by the utility model, a single power amplifier is used to drive multiple vibration platforms; phase difference which is produced due to the fact that the drive signal passes through different power amplifiers is eliminated; and the synchronization vibration of multiple vibration platforms is controlled.
Description
Technical field
The utility model belongs to multi shaker and excited vibration experimental technique field, is specifically related to a kind of multi shaker synchronous vibration control system based on single power amplifier.
Background technology
The spacecrafts such as carrier rocket, satellite and spaceship mainly bear the test of the environment such as static(al), vibration, noise and high low temperature in the course of the work.In order to ensure the reliability of spacecraft work, need to simulate in the face of its various environment on ground, to find in advance and to solve the problem that exists, make spacecraft safe reliable operation in space.Shaking table is exactly the testing equipment of Simulated Spacecraft vibration environment.
Along with the mankind to space probation progressively deeply, the load-bearing capacity of spacecraft progressively improves, its whole and component weight and also increase thereupon of size also improve constantly the requirement of its reliability and vibration environment compatibility test simultaneously.Existing so single shaking table can't satisfy the requirement of high thrust vibration test.For this reason, multi shaker need to be joined together the exciting force that provides larger; In addition, for the testpieces of the slender bodies such as guided missile, for the testpieces that makes slender bodies is subject to uniform exciting force, simultaneously also in order to match with real traffic condition, also need to adopt the mode of multi-point exciting to test.For this reason, multi shaker and excited vibration test has extensive and important actual application value.
In using the larger also excited vibration test of rigid platfor connection or test specimen rigidity, guarantee that the synchronism of each shaking table vibration is particularly crucial.。Because in case the Vibration Synchronization of any two shaking tables does not reach requirement, be equivalent to so system and be under an additional upsetting moment and work, can cause the damage of the stuck or shaking table moving component of bearing.
The method that guarantees at present synchronism is mainly to use a plurality of power amplifiers, composition is controlled with the closed-loop control system of phase feedback, it is the corresponding power amplifier independently of each shaking table, driving signal after amplification also feeds back to the phase-locking device when being transferred to the shaking table moving component, the phase-locking device is revised the output phase of different capacity amplifier, finally reduce phase differential, realize synchronous vibration.In two shaking table synchro control, the driving signal of vibration controller output is connected to the input end of phase-locking device, and phase-locking device output two-way drives signal, and wherein one the tunnel connects power amplifier 1, and another road connects power amplifier 2.Driving signal after power amplifier 1 output is amplified is to No. 1 shaking table; Driving signal after power amplifier 2 outputs are amplified is to No. 2 shaking tables.The output signal of No. 1 power amplifier and No. 2 power amplifiers feeds back to the phase-locking device, calculate by the synchronizer internal circuit phase differential that two-way drives signal, pass through again special algorithm, converse the driving signal and how to revise, can farthest reduce the power amplifier output signal is the phase differential that shaking table drives signal.The problem that said method exists is, because FEEDBACK CONTROL itself just has hysteresis quality, so be difficult to realize the real-time synchronization of phase place; Simultaneously, due to the limitation of algorithm itself, synchronization accuracy also is difficult to reach a satisfactory degree.
Summary of the invention
The purpose of this utility model is to provide a kind of multi shaker synchronous vibration control system and method based on single power amplifier, can eliminate to drive the phase differential that signal causes through different power amplifiers, realizes the control to multi shaker synchronous vibration.
The technical solution of the utility model is as follows: a kind of multi shaker synchronous vibration control system based on single power amplifier, this control system involving vibrations controller, power amplifier and N shaking table, wherein, N shaking table parallel join, its moving-coil the two poles of the earth respectively with driving signal the two poles of the earth O of power amplifier output
+And O
-Be connected, make power amplifier be applied to the driving voltage of N shaking table identical, simultaneously, power amplifier is connected with vibration controller, and vibration controller is by the synchronous vibration of a power amplifier control N shaking table.
A kind of multi shaker synchronous vibration control system based on single power amplifier, this control system involving vibrations controller, power amplifier and N shaking table, wherein, moving-coil the two poles of the earth of N shaking table join end to end, and with residue the two poles of the earth of each shaking table of N and driving signal the two poles of the earth O of power amplifier output
+And O
-Be connected, simultaneously, power amplifier is connected with vibration controller, and vibration controller is by the synchronous vibration of a power amplifier control N shaking table.
When the maximum drive current of described power amplifier is at least single shaking table output maximum thrust, the N of drive current doubly, makes vibration controller pass through the full thrust output of a power amplifier control N shaking table.
When the maximum drive voltage of described power amplifier is at least single shaking table output maximum thrust, the N of driving voltage doubly, makes vibration controller pass through the full thrust output of a power amplifier control N shaking table.
A described N shaking table comprises 2 shaking tables at least.
Remarkable result of the present utility model is: a kind of multi shaker synchronous vibration control system based on single power amplifier described in the utility model, utilize single power amplifier to drive a plurality of shaking tables, eliminate driving the phase differential that signal causes through different power amplifiers, realize the control to multi shaker synchronous vibration.
Description of drawings
Fig. 1 is a kind of multi shaker synchronous vibration control system schematic diagram based on single power amplifier described in the utility model;
Fig. 2 is that another kind described in the utility model is based on the multi shaker synchronous vibration control system schematic diagram of single power amplifier;
In figure: 1, vibration controller; 2, power amplifier; 3, shaking table.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of multi shaker synchronous vibration control system based on single power amplifier, involving vibrations controller 1, power amplifier 2 and N shaking table 3, wherein, N 〉=2; N shaking table 3 parallel joins, its moving-coil the two poles of the earth respectively with driving signal the two poles of the earth O of power amplifier 2 outputs
+And O
-Be connected, make power amplifier 2 be applied to the driving voltage of N shaking table 3 identical, simultaneously, power amplifier 2 is connected with vibration controller 1, vibration controller 1 is controlled the synchronous vibration of N shaking table 3 by power amplifier 2, wherein, when the maximum drive current of power amplifier 2 is at least single shaking table 3 output maximum thrust, the N of drive current doubly, makes vibration controller 1 control the full thrust output of N shaking table 3 by power amplifier 2.
As shown in Figure 2, a kind of multi shaker synchronous vibration control system based on single power amplifier, involving vibrations controller 1, power amplifier 2 and N shaking table, wherein, N 〉=2; Moving-coil the two poles of the earth of N shaking table 3 join end to end, and with residue the two poles of the earth of each shaking table 3 of N and driving signal the two poles of the earth O of power amplifier 2 outputs
+And O
-Be connected, simultaneously, power amplifier 2 is connected with vibration controller 1, vibration controller 1 is controlled the synchronous vibration of N shaking table 3 by power amplifier 2, wherein, when the maximum drive voltage of power amplifier 2 is at least single shaking table 3 output maximum thrust, the N of driving voltage doubly, makes vibration controller 1 control the full thrust output of N shaking table 3 by power amplifier 2.
A kind of multi shaker synchronous vibration control method based on single power amplifier specifically comprises the steps:
Step 1: with N shaking table 3 in parallel or the two poles of the earth O of mode access power amplifier 2 output drive signals of series connection
+And O
-, wherein, N 〉=2;
Step 2: utilize the vibration controller 1 that is connected with power amplifier 2, control N shaking table 3 synchronous vibrations, wherein, when N shaking table 3 was the mode access power amplifier 2 of connecting, when the maximum drive voltage of power amplifier 2 is at least single shaking table 3 output maximum thrust, the N of driving voltage doubly; Wherein, when N shaking table 3 is in parallel during access power amplifier 2, when the maximum drive current of power amplifier 2 is at least single shaking table 3 output maximum thrust, the N of drive current doubly.
Claims (5)
1. multi shaker synchronous vibration control system based on single power amplifier, it is characterized in that: this control system involving vibrations controller (1), power amplifier (2) and N shaking table (3), wherein, N shaking table (3) parallel join, its moving-coil the two poles of the earth respectively with driving signal the two poles of the earth O of power amplifier (2) output
+And O
-Be connected, make power amplifier (2) be applied to the driving voltage of N shaking table (3) identical, simultaneously, power amplifier (2) is connected with vibration controller (1), and vibration controller (1) is controlled the synchronous vibration of N shaking table (3) by power amplifier (2).
2. a kind of multi shaker synchronous vibration control system based on single power amplifier according to claim 1, it is characterized in that: when the maximum drive current of described power amplifier (2) is at least single shaking table (3) output maximum thrust, the N of drive current doubly, makes vibration controller (1) control the full thrust output of N shaking table (3) by power amplifier (2).
3. multi shaker synchronous vibration control system based on single power amplifier, it is characterized in that: this control system involving vibrations controller (1), power amplifier (2) and N shaking table (3), wherein, moving-coil the two poles of the earth of N shaking table (3) join end to end, and with residue the two poles of the earth of each shaking table of N (3) and driving signal the two poles of the earth O of power amplifier (2) output
+And O
-Be connected, simultaneously, power amplifier (2) is connected with vibration controller (1), and vibration controller (1) is controlled the synchronous vibration of N shaking table (3) by power amplifier (2).
4. a kind of multi shaker synchronous vibration control system based on single power amplifier according to claim 3, it is characterized in that: when the maximum drive voltage of described power amplifier (2) is at least single shaking table (3) output maximum thrust, the N of driving voltage doubly, makes vibration controller (1) control the full thrust output of N shaking table (3) by power amplifier (2).
5. according to claim 1 or 3 described a kind of multi shaker synchronous vibration control system based on single power amplifier, it is characterized in that: a described N shaking table (3) comprises 2 shaking tables (3) at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320276121XU CN203275987U (en) | 2013-05-20 | 2013-05-20 | Multiple vibration platform synchronization vibration control system based on single power amplifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320276121XU CN203275987U (en) | 2013-05-20 | 2013-05-20 | Multiple vibration platform synchronization vibration control system based on single power amplifier |
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| CN203275987U true CN203275987U (en) | 2013-11-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490592A (en) * | 2016-01-07 | 2016-04-13 | 瑞声光电科技(常州)有限公司 | Phase synchronization control system and control method for linear motors |
| CN106404160A (en) * | 2016-06-30 | 2017-02-15 | 国网重庆市电力公司电力科学研究院 | Power transmission line monitoring device metering system and method in field environment |
| CN106404329A (en) * | 2016-10-14 | 2017-02-15 | 北京航天斯达科技有限公司 | Multi-vibration-table chain protection device |
| CN107677441A (en) * | 2017-10-10 | 2018-02-09 | 上海汇博精工电子科技有限公司 | A kind of electric oscillation platform pilot system |
| CN110057523A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | A kind of more of broadband simultaneously pushes away pilot system |
| CN110082031A (en) * | 2019-05-27 | 2019-08-02 | 苏州东菱科技有限公司 | A kind of calibrating installation of pressure sensor |
-
2013
- 2013-05-20 CN CN201320276121XU patent/CN203275987U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490592A (en) * | 2016-01-07 | 2016-04-13 | 瑞声光电科技(常州)有限公司 | Phase synchronization control system and control method for linear motors |
| CN106404160A (en) * | 2016-06-30 | 2017-02-15 | 国网重庆市电力公司电力科学研究院 | Power transmission line monitoring device metering system and method in field environment |
| CN106404160B (en) * | 2016-06-30 | 2019-10-15 | 国网重庆市电力公司电力科学研究院 | Power transmission line monitoring device metering system and method under a kind of site environment |
| CN106404329A (en) * | 2016-10-14 | 2017-02-15 | 北京航天斯达科技有限公司 | Multi-vibration-table chain protection device |
| CN107677441A (en) * | 2017-10-10 | 2018-02-09 | 上海汇博精工电子科技有限公司 | A kind of electric oscillation platform pilot system |
| CN110057523A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | A kind of more of broadband simultaneously pushes away pilot system |
| CN110082031A (en) * | 2019-05-27 | 2019-08-02 | 苏州东菱科技有限公司 | A kind of calibrating installation of pressure sensor |
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Granted publication date: 20131106 |
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| CX01 | Expiry of patent term |