CN203869834U - Control system applied to mechanical environment test equipment - Google Patents
Control system applied to mechanical environment test equipment Download PDFInfo
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- CN203869834U CN203869834U CN201420158043.8U CN201420158043U CN203869834U CN 203869834 U CN203869834 U CN 203869834U CN 201420158043 U CN201420158043 U CN 201420158043U CN 203869834 U CN203869834 U CN 203869834U
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- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 230000003321 amplification Effects 0.000 claims abstract description 22
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 22
- 230000007613 environmental effect Effects 0.000 claims description 14
- 230000001133 acceleration Effects 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 230000004224 protection Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model discloses a control system applied to mechanical environment test equipment. The control system comprises a control unit, a power amplification unit and a sensing unit. The control unit is connected with a vibration table respectively through the power amplification unit and the sensing unit to form a first closed loop control circuit. Furthermore, a waveform adjusting unit is also arranged between the control unit and the power amplification unit and is connected with the vibration table respectively through the power amplification unit and the sensing unit to form a second closed loop control circuit, such that adjustment of size and distortion of vibration waveforms is realized simultaneously, there are no strict requirements for the distortion of the vibration table and the power amplification unit, the workload is small, and the cost is lower.
Description
Technical field
The utility model relates to a kind of environmental test system, relates in particular to a kind of dynamic environmental test apparatus control system, belongs to environmental test technical field.
Background technology
Vibration test belongs to a kind of of environmental test, is at the scene or laboratory test that the material object of vibrational system or model are carried out, is widely used at present at numerous areas such as Aero-Space, power machine, communications and transportation, building, environmental protection, labour protections.Wherein, aforementioned vibrational system is the quality elastic system of vibrated source forcing, as machine, structure or its parts, biosome etc.And common vibration test comprises the contents such as response measurement, dynamic perfromance parameters measurement, load identification and vibration environment test, generally utilize the equipment such as electric vibration table to realize.
Consult Fig. 1, conventional electric shaking table, when work, normally forms a close loop control circuit by control module, power amplification unit, shaking table and sensing unit.But such control mode only can offset of sinusoidal ripple peak value V
pwith effective value V
rmsrealize and controlling, to its degree of distortion, substantially can not relate to.And the distortion meeting of sine waveform causes vibrational energy to occur difference, and then make test result overproof, when serious, can damage experiment product.For overcoming this problem, existing mode is mainly by the degree of distortion of power amplification unit and shaking table is controlled, and makes it be less than respectively 1% and 10%, but can make like this workload sharply increase, and significantly raise the cost, and also very limited to the improvement of waveform distortion.
Utility model content
The purpose of this utility model is to propose a kind of new control system that is applied to environmental test equipment, and it can effectively improve waveform, thereby obtains good test result.
For realizing aforementioned goal of the invention, the technical solution adopted in the utility model is as follows:
A kind of dynamic environmental test apparatus control system, comprise control module, power amplification unit and sensing unit, described control module is connected with vibration generating arrangement through power amplification unit and sensing unit respectively, form the first close loop control circuit, and between described control module and power amplification unit, be also provided with waveform adjustment unit, described waveform adjustment unit is connected with vibration generating arrangement through power amplification unit and sensing unit respectively, forms the second close loop control circuit.
A control method that is applied to environmental test equipment, comprising:
The control module of shaking table is connected with vibration generating arrangement with sensing unit through power amplification unit respectively, forms the first close loop control circuit, thereby at least realize the control of offset of sinusoidal waveform size;
And, waveform adjustment unit is set between described control module and power amplification unit, and described waveform adjustment unit is connected with vibration generating arrangement with sensing unit through power amplification unit respectively, form the second close loop control circuit, thereby at least realize the control of offset of sinusoidal ripple degree of distortion.
Further, described vibration generating arrangement can be selected from all kinds of electronic, electric liquid, electromagnetic vibration test equipment, electric vibration table for example, but be not limited to this.
Further, the optional self-acceleration sensor of described sensor unit, speed pickup etc., but be not limited to this.
Further, described control module comprises the control system of electric vibration table, but is not limited to this.
Compared with prior art, the utility model at least tool has the following advantages: only need by existing vibration rig control system is adjusted, get final product the parameter achieve effective controls such as while offset of sinusoidal crest value, degree of distortion, and then the accuracy that effectively improves test result.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing vibration rig control system;
Fig. 2 is the structural representation of a kind of vibration rig control system in the utility model one typical embodiments.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the technical solution of the utility model is further described.
Consult Fig. 1, among the control system of existing vibration rig, normally the control module of vibration generating arrangement (or can be described as " shaking table ") is connected with shaking table through power amplification unit and sensing unit respectively, form the first close loop control circuit, wherein, control module is according to the peak size information of the vibration wave of the shaking table of Sensor monitoring, in real time the duty of shaking table is adjusted, but it can only be adjusted parameters such as peak value and effective values, uncontrollable to quality of vibration wave etc.
And in the present embodiment, refer to Fig. 2, the control system of this vibration rig is except comprising aforementioned the first close loop control circuit, also built one second close loop control circuit, it comprises the waveform adjustment unit being arranged between control module and power amplification unit, and this waveform adjustment unit is connected with shaking table through power amplification unit and sensing unit respectively, by this waveform adjustment unit, the signal that also can carry according to sensing unit, adjusts the degree of distortion of vibrational waveform.
The present embodiment, by the cooperation of aforementioned first, second close loop control circuit, has been realized the size to vibrational waveform, the adjustment of degree of distortion simultaneously, and to the degree of distortion of shaking table and power amplification unit without strict demand, workload is little, cost is more cheap.
It should be noted that, in addition to the implementation, the utility model can also have other embodiments.But all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. a control system that is applied to dynamic environmental test equipment, comprise control module, power amplification unit and sensing unit, described control module is connected with vibration generating arrangement through power amplification unit and sensing unit respectively, form the first close loop control circuit, it is characterized in that, between described control module and power amplification unit, be also provided with waveform adjustment unit, described waveform adjustment unit is connected with vibration generating arrangement through power amplification unit and sensing unit respectively, forms the second close loop control circuit.
2. the control system that is applied to dynamic environmental test equipment according to claim 1, is characterized in that described vibration generating arrangement comprises electronic or electric and magnetic oscillation generation equipment.
3. the control system that is applied to dynamic environmental test equipment according to claim 2, is characterized in that described vibration generating arrangement adopts electric vibration table.
4. the control system that is applied to dynamic environmental test equipment according to claim 1, is characterized in that described sensor unit comprises acceleration transducer and/or speed pickup.
5. according to the control system that is applied to dynamic environmental test equipment described in any one in claim 1-3, it is characterized in that described control module comprises the control system of electric vibration table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420158043.8U CN203869834U (en) | 2014-04-02 | 2014-04-02 | Control system applied to mechanical environment test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420158043.8U CN203869834U (en) | 2014-04-02 | 2014-04-02 | Control system applied to mechanical environment test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203869834U true CN203869834U (en) | 2014-10-08 |
Family
ID=51650774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420158043.8U Expired - Lifetime CN203869834U (en) | 2014-04-02 | 2014-04-02 | Control system applied to mechanical environment test equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN203869834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683472A (en) * | 2019-10-18 | 2021-04-20 | 深圳市重力东科电子设备有限公司 | Novel simple and easy electric vibration platform of closed-loop control industrial level |
-
2014
- 2014-04-02 CN CN201420158043.8U patent/CN203869834U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683472A (en) * | 2019-10-18 | 2021-04-20 | 深圳市重力东科电子设备有限公司 | Novel simple and easy electric vibration platform of closed-loop control industrial level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |