CN103472741B - Blade of wind-driven generator fatigue certification test test control system - Google Patents
Blade of wind-driven generator fatigue certification test test control system Download PDFInfo
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Abstract
A kind of blade of wind-driven generator fatigue certification test test control system, including testing stand, load exciting device, foil gauge, bridge-type strained handling device, high-speed synchronous data acquiring card, computer, memorizer and display；Bridge-type strained handling device comprise can recalibrate the shunting calibration module of foil gauge sensitivity, the bridge temperature compensation module of linear expansion coefficient error between compensable environmental variations in temperature and foil gauge and tested blade material, can be by the strain value zero module of tested blade strain initial value zero；Computer is built with automatically controlling monitoring modular and testing data processing module; automatically control monitoring modular by real-time testing strain signal data and to contrast with design load; judge to test whether strain value is within the scope of design load with this; decide whether to keep that converter output frequency is constant according to judged result, frequency conversion or the control signal of shutdown, compliance voltage signal data is converted into the strain measurement value of reality by testing data processing module.
Description
Technical field
The present invention relates to test control system, specifically a kind of blade of wind-driven generator fatigue certification test test control system.
Background technology
Wind wheel blade is one of critical component of wind-driven generator, and the design of blade and workmanship directly influence the operational efficiency of wind-driven generator, service life and acting performance.Introduction and digestion along with blade of wind-driven generator technology, China also begins to autonomous Design and produces the blade of MW class wind turbine, by its commercialization, but, the commercialization of blade of wind-driven generator must obtain the certification of corresponding international organization, and the tired certification Ze Shi IEC(International Electrotechnical Commission of blade of wind-driven generator) one of requisite authentication item in standard, the purpose of its certification is: 1. find the technique irrationality in blade design and manufacture process and manufacturing defect, verify blade design and the concordance of manufacture and reliability, and be Curve guide impeller from now on, manufacture and subsequent treatment provides reliable basis；2. guarantee that blade meets or exceeds 20 years service life；3. in tired certification test, the general strain value requiring tired certification test Leaf sensitive spot control design load ± 5% within the scope of, only during tired certification test, after ensureing that test repeated strain value is within design calculated value institute permissible range, can assert that design and manufacture have concordance, it is possible to assert design and the reliability manufactured, feasibility.
The tired certification test of blade of wind-driven generator mainly comprises following job content: is the most independently respectively completed blade and waves the tired certification test in (flapwise) and shimmy (edgewise) direction；2. wave at blade and be respectively mounted load exciting device and static counterweight with edgewise direction, measure the natural frequency of single blade, according to the repeated strain value recorded and the comparing result of design load, adjust the output frequency of converter, the exciting force being raised and lowered in fatigue test.
nullOwing to the test system of existing blade of wind-driven generator fatigue certification test is the open test system not having and automatically controlling monitoring function，It is primarily present problems with: during tired certification test，Once the repeated strain of blade sensitive spot is not within the zone of reasonableness of design load，Then it is merely able to the output frequency by manually adjusting converter，The exciting force of fatigue test is increased or decreased，But，The fatigue test of one operating mode of blade generally requires and persistently carries out the two weeks the most trimestral time，During tired certification test，Blade is easily subject to the impact of the factor such as ambient temperature and blade own material heating，Certain change will be there is (such as in its rigidity，When ambient temperature is low, the rigidity of blade will increase，Otherwise it is the most anti-)，Thus cause the strain value of blade sensitive spot to change，The strain value even more than or less than blade fatigue designed，Once improper in the repeated strain value tested，Then need the output frequency by manually adjusting converter，Control the repeated strain of blade sensitive spot within the scope of reasonably，This not only can be greatly increased artificial work load，And manually adjust and there is the biggest subjectivity，Accurately and poor reliability，Easily make blade in process of the test，The repeated strain value of its sensitive spot is above or below Fatigue Design value，Thus the requirement of blade fatigue certification test can not be met，When particularly causing Natural Frequency of Blade to change therewith when blade stiffness change，It would be possible to cause tired excited frequency to overlap with Natural Frequency of Blade and produce resonance，Now，Once artificial treatment is not in time，The danger of tired certification test will be greatly increased，Even can cause the security incident that blade is damaged.
Summary of the invention
It is an object of the invention to: for the deficiency of above-mentioned existing test system, it is provided that a kind of simple to operate, automatic intelligent degree height, the test blade of wind-driven generator fatigue certification test test control system that data are accurate, safety and reliability is high, practical.
The technical solution used in the present invention is, a kind of blade of wind-driven generator fatigue certification test test control system, and described test control system includes:
-testing stand, described testing stand is used for installing tested blade；
-load exciting device, described load exciting device is for applying dynamic Fatigue Testing Loads to tested blade, and the excited frequency of load exciting device is by Frequency Converter Control；
-foil gauge, described foil gauge is multiple, and each foil gauge is self-temperature-compensated strain ga(u)ge, and multiple foil gauges are respectively provided on each sensitive spot of tested blade, for detecting tested blade repeated strain value of each sensitive spot under Fatigue Testing Loads；
-bridge-type strained handling device, described bridge-type strained handling device is for processing the repeated strain signal data that all strain measurements arrive；Bridge-type strained handling device comprises shunting calibration module, bridge temperature compensation module and strain value zero module, and described shunting calibration module, for recalibrating the sensitivity of foil gauge before testing, connects the cable impact on foil gauge sensitivity to eliminate；Described bridge temperature compensation module is for compensating the error of linear expansion coefficient between variation of ambient temperature and foil gauge and tested blade material, to realize round-the-clock tested blade being carried out fatigue test；Described strain value zero module is for making zero the strain initial value of tested blade；
-high-speed synchronous data acquiring card, described high-speed synchronous data acquiring card for being converted into digital signal by the foil gauge analogue signal that bridge-type strained handling device obtains, and high speed synchronous sample and these signal datas of holding, and these signal datas are flowed to computer；
-computer, described computer is built with automatically controlling monitoring modular and testing data processing module；The real-time testing strain signal data that the conveying of high-speed synchronous data acquiring card comes are contrasted by the described monitoring modular that automatically controls with design load, judge to test whether strain value is within the scope of design load with this, if, then show that the exciting force that load exciting device currently exports meets fatigue test requirement, keep the current excited frequency of load exciting device and eccentric hammer quality, if not, then show that the exciting force that load exciting device currently exports needs regulation to change, automatically control monitoring modular and send the frequency change control signal being raised and lowered according to comparing result to converter, the frequency exported by converter changes the excited frequency of the load tested blade of exciting device exciting；If after the excited frequency by change load exciting device; the real-time testing strain signal data that high-speed synchronous data acquiring card collects are still beyond design load scope or reached setting dangerous values scope; then automatically control monitoring modular and export stopping signal, the action of Ending Load exciting device to converter；Compliance voltage signal data, for processing the voltage signal data of foil gauge output, is converted into the strain measurement value of reality by described testing data processing module；
-memorizer, described memorizer is for storing the measurement signal data of foil gauge output；
-display, described display is used for showing the measured value of foil gauge output signal after treatment and the excited frequency of current tested blade and fatigue life cycle.
Further, frequency conversion higher limit and frequency conversion lower limit it are set with in described converter.
Further, automatically controlling monitoring modular described in the frequency conversion value that converter exports is the 80～95% of the tested natural frequency of tested blade.
Further, described load exciting device is mainly made up of reductor and eccentric hammer exciting agency, load exciting device is fixed on tested blade by fixture, the reductor of load exciting device drives eccentric hammer exciting agency action, and the exciting force of eccentric hammer exciting agency passes to tested blade by fixture.
Further, the temperature self-compensation ambient temperature range of described foil gauge is-20～40 DEG C.
Further, described foil gauge is by room temperature fast-curing glue on the sensitive spot of tested blade, and the exposed surface of foil gauge scribbles the protective coating of waterproof and dustproof.
The invention has the beneficial effects as follows: above-mentioned testing fatigue control system can apply to the blade of wind-driven generator fatigue certification test test more than 0.9Hz of all natural frequencies, during blade fatigue certification test, test strain signal data acquisition and the storage work of 16 TCH test channels can be met, meanwhile, it can also meet the static(al) certification test test of blade of wind-driven generator；Above-mentioned test control system mainly can realize following functions:
1). Natural Frequency of Blade and damping test；
2). it is automatically obtained shunting calibration (shunt calibration), it is ensured that test strain signal data accurately, reliably, make the precision of test strain signal data not affected by conductor length；
3). it is automatically obtained ambient temperature compensation, eliminate the error brought because of factors such as the linear expansion coefficients between variation of ambient temperature and foil gauge and tested blade material, ensure further accuracy and the reliability of test strain signal data, to realize round-the-clock tested blade carrying out tired certification test；
4). be automatically obtained strain initial testing data zero work (Offset Null Compensation), decrease artificial treatment test data workload, its principle be utilize digital potentiometer by regular for the output valve of bridge voltage be zero；
5). realize the synchronization of multi-point sampler strain signal data and keep function (Simultaneous Sample and
Hold), the strict guarantee synchronization of multi-point sampler strain signal data, real-time；
6). it is automatically obtained test strain signal data and contrasts with design load; and judge to test whether strain signal data are within the scope of design load according to comparing result; holding according to judged result output correspondence, frequency conversion, shutdown control signal; realize the control to converter output frequency; thus the control that the realization of automatic intelligent is to whole system; alleviate hand labor load, safeguards system, tested blade and the safety of experimenter's person；
7). according to the shutdown control signal that converter is exported, synchronize to send early warning signal, remind experimenter note and check failure and other reasons；
8). the test data of blade fatigue certification test are realized simultaneous display and storage；And the storage testing data can be divided into two parts, a portion uses FIFO(first in first out) mode stores (the most nearest two hours interior strain waveform data), another part uses positive peak and the negative peak strain value of each sensitive spot of timing preserving type storage tired certification test test overall process, data file can all use binary format, thus saves the memory space of computer storage；
9). according to the natural frequency that tested blade is recorded, converter arranges frequency conversion higher limit and frequency conversion lower limit, thus set the operating frequency range of converter, when to converter output frequency change control signal, can set in automatically controlling monitoring modular simultaneously the frequency change control signal of output by test natural frequency 80～95%, again realize the restriction to frequency converter frequency working range, and then guarantee that tired certification test will not be operated in more than tested Natural Frequency of Blade point, in order to the dual safety guaranteeing that system, tested blade and experimenter are personal.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the composition of the present invention and uses status architecture schematic diagram.
Fig. 2 is the topology diagram of the present invention.
Fig. 3 is the software program structure chart of the present invention.
Fig. 4 is the test flow chart of the present invention.
Fig. 5 is the control principle drawing of the present invention.
Detailed description of the invention
Composition and the use status architecture of the present invention see Fig. 1, the bridge-type strained handling device of the present invention, each function automatically controlling monitoring modular and testing data processing module are realized by the software worked out based on Labview completely, and the topological structure of the present invention, software program structure see Fig. 2 and Fig. 3.The present invention includes testing stand 1, load exciting device, foil gauge 5, bridge-type strained handling device 6, high-speed synchronous data acquiring card 7, computer 12, memorizer 10 and display 11.
Wherein, testing stand 1 is used for installing tested blade 2, and tested blade 2 is laterally assemblied on testing stand 1.
Load exciting device is mainly made up of reductor 4 and eccentric hammer exciting agency, load exciting device is fixed on tested blade 2 by fixture, in case tested blade 2 is caused damage, the reductor 4 of load exciting device drives eccentric hammer exciting agency action, the exciting force of eccentric hammer exciting agency passes to tested blade 2 by fixture, making tested blade 2 produce upper and lower Fatigue Vibration, load exciting device is for applying dynamic Fatigue Testing Loads to tested blade 2.Reductor 4 speed is controlled by the converter 3 being connected with computer 12, according to the natural frequency recording tested blade 2, is set with frequency conversion higher limit and frequency conversion lower limit, thus sets the operating frequency range of converter 3 in converter 3.
Foil gauge 5 is multiple; each foil gauge 5 is self-temperature-compensated strain ga(u)ge; their temperature self-compensation ambient temperature range is-20～40 DEG C; these foil gauges 5 are by room temperature fast-curing glue on the sensitive spot of tested blade 2, and each exposed surface of foil gauge 5 scribbles the protective coating of waterproof and dustproof.Tested blade 2 produces upper and lower Fatigue Vibration under the effect of load exciting device, there is corresponding repeated strain in each sensitive spot making tested blade 2, these foil gauges 5 are for detecting tested blade 2 repeated strain value of each sensitive spot deformation under Fatigue Testing Loads.
Bridge-type strained handling device 6 is for processing the repeated strain signal data that all strain measurements arrive, and this bridge-type strained handling device 6 comprises shunting calibration module, bridge temperature compensation module and strain value zero module.Shunting calibration module, for before experimental test, recalibrates the sensitivity of foil gauge, connects the cable impact on foil gauge 5 sensitivity to eliminate.Bridge temperature compensation module is for compensating the error of the linear expansion coefficient between variation of ambient temperature and foil gauge 5 and tested blade 2 material, thus reduce that foil gauge 5 during experimental test is affected by environment further and the test error that brings, to realize round-the-clock tested blade 2 carrying out tired certification test.Strain value zero module is for making zero the strain initial value of tested blade 2.
High-speed synchronous data acquiring card 7 for being converted into digital signal by the foil gauge analogue signal that bridge-type strained handling device 6 obtains, and high speed synchronous sample and these signal datas of holding, and these signal datas are flowed to computer 12.
Computer 12 is built with automatically controlling monitoring modular 8 and testing data processing module 9.Automatically control the real-time testing strain signal data that high-speed synchronous data acquiring card 7 carries by monitoring modular 8 to contrast with design load, judge to test whether strain value is within the scope of design load with this；The most then show that the excited frequency that load exciting device currently exports is suitable, automatically control monitoring modular 8 and lock, keep the current excited frequency of load exciting device；If not, then show that the excited frequency that load exciting device currently exports needs regulation to change, automatically control monitoring modular 8 and send the frequency change control signal being raised and lowered according to comparing result to converter 3, the frequency exported by converter 3 changes the exciting force size of the load tested blade of exciting device exciting, in order to further ensure that fatigue test system, tested blade and the safety of experimenter's person, it is configured to the VFC scope of converter 3 output in automatically controlling monitoring modular 8, the 80～95% of test natural frequency that its variable frequency range is tested blade 2, again to realize the restriction to converter 3 variable frequency work scope, and then guarantee that tired certification test will not be operated in more than the natural frequency point of tested blade 2；If after the excited frequency by change load exciting device; the real-time testing strain signal data that high-speed synchronous data acquiring card 7 collects are still beyond design load scope or reached setting dangerous values scope; then automatically control monitoring modular 8 and export stopping signal to converter 3; the work of Ending Load exciting device; meanwhile; automatically control monitoring modular 8 and automatically export early warning signal; this early warning signal will carry out heterochromatic marking beyond scope of design value and setting dangerous values; early warning result is demonstrated by display 11, to remind experimenter to note and to check failure and other reasons.Compliance voltage signal data, for processing the compliance voltage signal data that high-speed synchronous data acquiring card 7 collects, is converted into the strain measurement value of reality by testing data processing module 9.
Memorizer 10 can embed in computer 12, it is also possible to external outside computer 12.The measurement signal data of the foil gauge output that memorizer 10 has processed through computer 12 for storage, in order to comprehensive, store data reliably, can consider to be divided into memorizer 10 two parts, a portion uses FIFO(first in first out) mode stores (the most nearest two hours interior strain waveform data), another part uses positive peak and the negative peak strain value of each sensitive spot of timing preserving type storage tired certification test test overall process, data file can all use binary format, thus saves the memory space of computer storage.
Display 11 is used for showing the measured value of the foil gauge output signal after computer 12 processes and the excited frequency of current tested blade 2 and fatigue life cycle.
For the residual intensity of blade tested after checking fatigue test, by setting up static(al) test module, remotely distance detection module, force cell etc. to the present invention, the static(al) test of tested blade residual intensity can be realized.
The testing process of the present invention sees Fig. 4, and the control principle of the present invention sees Fig. 5.During blade fatigue certification test, automatically control monitoring and adjust one of the key technology that tested blade sensitive spot repeated strain value is the present invention, it needs possess two functions, one is: after sensitive prime point strain value exceedes the 15% of design strain, being automatically stopped frequency converter frequency output, the Fatigue Testing Loads then stopping tested blade loads；Its two: when sensitive prime point strain value exceed design strain 10% time; automatically control monitoring modular just with converter variable frequency range set in advance, excited frequency to be adjusted; Fatigue Testing Loads is adjusted within the scope of suitably; if within being still not able to Fatigue Testing Loads is adjusted to OK range in given converter adjusting range; then output stopping signal terminates fatigue test, in order to testing crew is searched reason and solves corresponding fault.To this end, this automatically controls monitoring modular has needed following functions:
1). the output frequency of converter can be automatically controlled；
2). when the error of theoretical strain value same test strain value is more than 5～10%; automatically the output frequency of converter is adjusted; it adjusts step-length and frequency adjustment range is optional; to making test repeated strain value meet the requirement of fatigue test; if can not make the error of Design Theory repeated strain value same test strain value in correct scope by adjusting the output frequency of converter, then output stopping signal terminates fatigue test；
3). when the error of any one output test repeated strain value with Design Theory repeated strain value reaches 15%, then output stopping signal makes fatigue test terminate；
4). the output frequency arranging converter is 0～natural frequency, prevents converter hypervelocity from causing unnecessary danger；
5). in automatically controlling monitoring modular, again limit the rate-adaptive pacemaker scope of converter, it sets about in the range of 0～tested Natural Frequency of Blade (90～95%), mainly for preventing converter output frequency near the natural frequency of blade, blade is caused to produce resonance in fatigue test or produce bigger heat and damaged blade.
The work process of the present invention is described below: the most before the test according to the test specification of concrete tested blade, determine tested blade required for load loading position and configure corresponding sensitive spot strain testing passage；Blade is arranged on flapwise or edgewise direction, then installs corresponding tired exciting device (i.e. load exciting device) and static counterweight；After installation, test and determine the natural frequency of tested blade, limit the reference frequency output of converter at converter with automatically controlling setting on monitoring modular respectively according to the natural frequency of tested blade；Then by automatically controlling monitoring modular startup converter, and it is stepped up the output frequency of converter, the repeated strain of each sensitive spot under Real-time Collection and the corresponding exciting force of display, after once the strain of each sensitive spot reaches Design Theory repeated strain design load, then lock the output frequency of converter, simultaneously, start the Vibrating Load automatically controlled in monitoring modular automatically to adjust, report to the police and stopping function, now, tired certification test will be carried out according to normal program, once hang-up during fatigue test, then experimenter is by according to the repeated strain of the stored waveform of two hours and regularly storage just, negative peak, judge the reason of termination test, after finding the reason of termination test and doing respective handling, can enough restart tired certification test.
Claims (6)
1. a blade of MW class wind turbine fatigue certification test test control system, described blade of wind-driven generator is blade of MW class wind turbine, and the natural frequency of blade is more than 0.9Hz, it is characterised in that described test control system includes:
-testing stand, described testing stand is used for installing tested blade；
-load exciting device, described load exciting device is for applying dynamic Fatigue Testing Loads to tested blade, and the excited frequency of load exciting device is by Frequency Converter Control；
-foil gauge, described foil gauge is multiple, and each foil gauge is self-temperature-compensated strain ga(u)ge, and multiple foil gauges are respectively provided on each sensitive spot of tested blade, for detecting tested blade repeated strain value of each sensitive spot under Fatigue Testing Loads；
-bridge-type strained handling device, described bridge-type strained handling device is for processing the repeated strain signal data that all strain measurements arrive；Bridge-type strained handling device comprises shunting calibration module, bridge temperature compensation module and strain value zero module, and described shunting calibration module, for recalibrating the sensitivity of foil gauge before testing, connects the cable impact on foil gauge sensitivity to eliminate；Described bridge temperature compensation module is for compensating the error of linear expansion coefficient between variation of ambient temperature and foil gauge and tested blade material, to realize round-the-clock tested blade being carried out fatigue test；Described strain value zero module is for making zero the strain initial value of tested blade；
-high-speed synchronous data acquiring card, described high-speed synchronous data acquiring card for being converted into digital signal by the foil gauge analogue signal that bridge-type strained handling device obtains, and high speed synchronous sample and these signal datas of holding, and these signal datas are flowed to computer；
-computer, described computer is built with automatically controlling monitoring modular and testing data processing module；The real-time testing strain signal data that the conveying of high-speed synchronous data acquiring card comes are contrasted by the described monitoring modular that automatically controls with design load, judge to test whether strain value is within the scope of design load with this, if, then show that the exciting force that load exciting device currently exports meets fatigue test requirement, keep the current excited frequency of load exciting device and eccentric hammer quality, if not, then show that the exciting force that load exciting device currently exports needs regulation to change, automatically control monitoring modular and send the frequency change control signal being raised and lowered according to comparing result to converter, the frequency exported by converter changes the excited frequency of the load tested blade of exciting device exciting；If after the excited frequency by change load exciting device; the real-time testing strain signal data that high-speed synchronous data acquiring card collects are still beyond design load scope or reached setting dangerous values scope; then automatically control monitoring modular and export stopping signal, the action of Ending Load exciting device to converter；Compliance voltage signal data, for processing the voltage signal data of foil gauge output, is converted into the strain measurement value of reality by described testing data processing module；
-memorizer, described memorizer is for storing the measurement signal data of foil gauge output；
-display, described display is used for showing the measured value of foil gauge output signal after treatment and the excited frequency of current tested blade and fatigue life cycle.
Blade of MW class wind turbine fatigue certification test test control system the most according to claim 1, it is characterised in that be set with frequency conversion higher limit and frequency conversion lower limit in described converter.
Blade of MW class wind turbine fatigue certification test test control system the most according to claim 1, it is characterised in that described in automatically control monitoring modular to the frequency conversion value that converter exports be the 80～95% of the tested natural frequency of tested blade.
Blade of MW class wind turbine fatigue certification test test control system the most according to claim 1, it is characterized in that, described load exciting device is mainly made up of reductor and eccentric hammer exciting agency, load exciting device is fixed on tested blade by fixture, the reductor of load exciting device drives eccentric hammer exciting agency action, and the exciting force of eccentric hammer exciting agency passes to tested blade by fixture.
Blade of MW class wind turbine fatigue certification test test control system the most according to claim 1, it is characterised in that the temperature self-compensation ambient temperature range of described foil gauge is-20～40 DEG C.
6. according to blade of MW class wind turbine fatigue certification test test control system described in claim 1 or 5; it is characterized in that; described foil gauge is by room temperature fast-curing glue on the sensitive spot of tested blade, and the exposed surface of foil gauge scribbles the protective coating of waterproof and dustproof.
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| CN115031948B (en) * | 2022-08-10 | 2022-11-11 | 常州市宏发纵横新材料科技股份有限公司 | Modularized blade fatigue life prediction method and device, control device and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517691A (en) * | 2003-01-22 | 2004-08-04 | 三菱重工业株式会社 | Estimating method for fatigue life of turbine blade, turbine blade creep elongation strain measurement device and turbine blade |
| CN1554935A (en) * | 2003-12-29 | 2004-12-15 | 阎晓军 | High frequency preheating treatment technology for high temperature alloy creep/fatique test |
| CN101949770A (en) * | 2010-08-14 | 2011-01-19 | 东方电气集团东方汽轮机有限公司 | Identifying and testing system of static force of blades of wind driven generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6983659B2 (en) * | 2003-01-22 | 2006-01-10 | Mitsubishi Heavy Industries, Ltd. | Turbine blade creep life evaluating method, turbine blade creep elongation strain measuring apparatus, and turbine blade |
-
2013
- 2013-08-29 CN CN201310384216.8A patent/CN103472741B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1517691A (en) * | 2003-01-22 | 2004-08-04 | 三菱重工业株式会社 | Estimating method for fatigue life of turbine blade, turbine blade creep elongation strain measurement device and turbine blade |
| CN1554935A (en) * | 2003-12-29 | 2004-12-15 | 阎晓军 | High frequency preheating treatment technology for high temperature alloy creep/fatique test |
| CN101949770A (en) * | 2010-08-14 | 2011-01-19 | 东方电气集团东方汽轮机有限公司 | Identifying and testing system of static force of blades of wind driven generator |
Non-Patent Citations (2)
| Title |
|---|
| 发动机叶片多功能测控试验系统的实现方法;尹育聪等;《工业控制计算机》;20061231;第19卷(第11期);第75页第1段-第76页最后一段，及附图图1-图2 * |
| 风力机叶片动力特性实验台设计;李海波等;《热能动力工程》;20120131;第27卷(第1期);第117页第1段~120页第1段，及附图图1~图4 * |
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