CN2641609Y - Automatic testes for rubber torque-vibration damper - Google Patents
Automatic testes for rubber torque-vibration damper Download PDFInfo
- Publication number
- CN2641609Y CN2641609Y CN 03200594 CN03200594U CN2641609Y CN 2641609 Y CN2641609 Y CN 2641609Y CN 03200594 CN03200594 CN 03200594 CN 03200594 U CN03200594 U CN 03200594U CN 2641609 Y CN2641609 Y CN 2641609Y
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- signal
- vibration
- vibration damper
- sound card
- power amplifier
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Abstract
An automatic testing device of a rubber torsional vibration damper is provided, which comprises a computer, a power amplifier, a vibration exciter, a vibration damper, an acceleration sensor, and a charge amplifier. The sound card in the computer outputs a sinusoidal AC signal which series frequencies are gradually increased generated in the signal software of a signal generation module to the power amplifier, the sinusoidal AC signal is exerted onto the vibration exciter after being amplified by the power amplifier, the vibration exciter generating mechanical vibration transfers vibration to the vibration damper, the vibration state of the vibration damper is measured by the acceleration sensor arranged on the vibration damper, a charge signal is converted into a voltage signal by the charge amplifier, and the signal is amplified and transferred to the sound card in the computer. The integration rate of the whole testing system is high, the occupying space is small, the mass is light, the utility model is easy to carry, and the equipment cost is inexpensive. The automatization during the whole testing process greatly reduces the technical requirements for an operator. The testing is rapid and convenient, the performance is reliable and the adaptability is broad.
Description
Technical field
The utility model is the rubber torsional vibration damper automatic testing equipment, belongs to IC Engine Test Technology.
Background technology
At present, the characteristic test technology of rubber shock absorber far can not adapt to the demand of producing and mating.The domestic detection means of producing of not can be used for also has only B﹠amp in the world; The equipment of K company can be used for the Performance Detection of rubber shock absorber, but price is very expensive.And, B﹠amp; The product of K company is the common apparatus that is used for vibration-testing, uses very inconvenient when being used for the test of rubber shock absorber.
Method of testing commonly used has in scientific research at present:
1, free vibration attenuation method
This method is considered as the single-degree of freedom vibration system with vibration damper, does damped vibration under the initial interference moment loading, and its amplitude changes according to exponential damping law, thereby determines natural frequency and logarithmic decrement coefficient.But, how to apply a desirable initial interference moment, how to control the size of this moment, be the major obstacle that this method of restriction is used for batch detection.Therefore this method is not suitable for doing more accurately, stably to measure the natural frequency and the damping of rubber type torsional vibration damper.
2, transport function diagnostic method
This method utilizes the power hammer that vibration damper is given hammering, records the real frequency of frequency response function, frequently empty and phase frequency figure, thereby obtains frequency and damping ratio.But this method has problems equally.Because the test macro of rubber type torsional vibration damper is not a real single-mode system, often the HFS peak value is higher when measuring transport function, particularly all the more so when measuring acceleration admittance, be easy to make the tester to ignore real fundamental frequency peak value, and mistake cause test result to have than mistake as the fundamental frequency peak value high frequency peaks.
3, sine sweep method
The sinusoidal excitation that this method utilizes vibrator to produce scans vibration damper in certain frequency range, finds out its natural frequency of vibration and damping ratio coefficient according to the individual features of vibration damper.Compare with above-mentioned two kinds of methods, this method is had relatively high expectations to equipment and operating personnel's, but the result is reliable and stable.
Summary of the invention
The utility model just is based on the sine sweep ratio juris, the special-purpose full automatic pick-up unit of one cover of the rubber shock absorber that uses at internal combustion engine, this automatic detection device produces the simple alternating current electric signal that a series of frequencies increase progressively continuously by signal generating module, and data analysis module carries out analytical calculation to the signal of being gathered and draws last testing constant.This automatic testing equipment comprises the computing machine of band data analysis module and signal generating module, power amplifier, vibrator, vibration damper, acceleration transducer, charge amplifier, data analysis module is made up of data analysis software and sound card, and signal generating module produces software by signal and sound card is formed; Sound card produces software with the signal in the signal generating module and produces the simple alternating current electric signal that a series of frequencies increase progressively continuously, output to power amplifier, the simple alternating current electric signal amplifies after-applied in vibrator by power amplifier, its frequency is identical with the signal frequency of computing machine output, the vibrator that produces mechanical vibration is passed to vibration damper with vibration, the vibration state of vibration damper is measured by the acceleration transducer that is installed on the vibration damper, the quantity of electric charge that acceleration transducer produces is directly proportional with the vibration acceleration of vibration damper, charge amplifier is converted to voltage signal with charge signal, signal is amplified again and be delivered in the sound card, sound card passes to data analysis software with gathering the signal of returning.This proving installation has solved universal testing method and has determined to have following characteristics to what tester and test condition were had relatively high expectations:
1. whole test system integrated level height, it is little to take up room, and light weight is easy to carry about with one, the cost of equipment
Cheap.
2. the robotization of testing process-data analysis-examining report overall process greatly reduces the operator
Member's professional technique requirement.
3. do not need engine pedestal when testing, but independent measurement.Test efficient and convenient, dependable performance,
Wide adaptability.
4. adopt common sound card surrogate data method capture card.
Description of drawings
Fig. 1 is the theory of constitution figure of rubber torsional vibration damper proving installation.
Fig. 2 is the process flow diagram of testing software.
Primary structure is among the figure: computing machine 1, and power amplifier 2, vibrator 3, vibration damper 4, acceleration transducer 5, charge amplifier 6, data analysis module 7, sound card 8, data analysis software 9, signal generating module 10, signal produces software 11, sound card 12.
Embodiment
The rubber torsional vibration damper automatic testing equipment comprises the computing machine 1 of band data analysis module 7 and signal generating module 10, power amplifier 2, vibrator 3, vibration damper 4, acceleration transducer 5 and charge amplifier 6 are formed, as shown in Figure 1, wherein signal generating module 10 is made up of signal generation software 11 and sound card 12, and data analysis module 7 is made up of data analysis software 9 and sound card 8.
When using this device to detect, the signal in the signal generating module 10 produces software 11 and produces the simple alternating current electric signal that a series of frequencies increase progressively continuously, outputs to power amplifier 2 by sound card 12.The simple alternating current electric signal amplifies after-applied in the coil of vibrator 3 by power amplifier 2.The coil that is connected with alternating current produces mechanical vibration in magnetic field, its frequency is identical with the signal frequency of computing machine 1 output.The mechanical vibration that vibrator 3 produces are passed to magnetic suction disc by vibration-sensing rod, pass to vibration damper 4 inertial mass by magnetic suction disc again, thereby make inertial mass produce forced vibration.The vibration state of vibration damper 4 is measured by the acceleration transducer 5 that is installed on the vibration damper 4.The quantity of electric charge that acceleration transducer 5 produces is directly proportional with the vibration acceleration of vibration damper 4.Charge amplifier 6 is converted to voltage signal with charge signal, and signal amplified and is delivered in the computing machine 1.Sound card 8 in the data analysis module 7 passes to data analysis software 9 with gathering the signal of returning.9 pairs of signals of returning of gathering of data analysis software carry out analytical calculation and draw last test parameter: the natural frequency of rubber torsional vibration damper and ratio of damping.
Signal generation software 11 in the computing machine 1 and data analysis software 9 all are to adopt the C++Builder establishment in whole detection device, see accompanying drawing 2.What wherein signal produced software 11 employings is the loop structure of a scan-data, and just by calling the api function of Windows, producing a series of frequencies progressively increases and the constant sinusoidal signal of amplitude.The incremental steps of sinusoidal signal is constant, is determined by the initialization of testing software, and the sinusoidal signal frequency scope that is produced is also determined in the software initialization stage.The sinusoidal signal that generates passes to power amplifier 2 by the earphone passage output of sound card 12.
Data analysis software 9 major functions are: the resonance signal after amplifying through charge amplifier 6 passes to data analysis software 9 by the mic passage of sound card 8.9 pairs of data of data analysis software are carried out accurate spectrum analysis and processing, the method of handling is the response data (sinusoidal acceleration data) of vibration damper 4 each Frequency points that will collect, be converted into amplitude, find out the maximum amplitude points and 1/2 maximum amplitude points of all exciting points in the sensing range, calculate the ω of vibration damper 4 then
0And ξ.This data analysis software 9 also comprises functions such as data tracking, graphic presentation, curve convergent-divergent, thereby obtains under vibration damper 4 each frequency analysis result more intuitively.
Claims (1)
1. rubber torsional vibration damper automatic testing equipment, it is characterized in that: this automatic testing equipment comprises the computing machine (1) of band data analysis module (7) and signal generating module (10), power amplifier (2), vibrator (3), vibration damper (4), acceleration transducer (5), charge amplifier (6), data analysis module (7) is made up of data analysis software (9) and sound card (8), and signal generating module (10) produces software (11) by signal and sound card (12) is formed; Sound card (12) produces software (11) with the signal in the signal generating module (10) and produces the simple alternating current electric signal that a series of frequencies increase progressively continuously, output to power amplifier (2), the simple alternating current electric signal amplifies after-applied in vibrator (3) by power amplifier (2), its frequency is identical with the signal frequency of computing machine (1) output, the vibrator (3) that produces mechanical vibration is passed to vibration damper (4) with vibration, the vibration state of vibration damper (4) is measured by the acceleration transducer (5) that is installed on the vibration damper (4), the quantity of electric charge that acceleration transducer (5) produces is directly proportional with the vibration acceleration of vibration damper (4), charge amplifier (6) is converted to voltage signal with charge signal, signal is amplified again and be delivered in the sound card (8), sound card (8) passes to data analysis software (9) with gathering the signal of returning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03200594 CN2641609Y (en) | 2003-01-10 | 2003-01-10 | Automatic testes for rubber torque-vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03200594 CN2641609Y (en) | 2003-01-10 | 2003-01-10 | Automatic testes for rubber torque-vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2641609Y true CN2641609Y (en) | 2004-09-15 |
Family
ID=34287381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03200594 Expired - Fee Related CN2641609Y (en) | 2003-01-10 | 2003-01-10 | Automatic testes for rubber torque-vibration damper |
Country Status (1)
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|---|---|
| CN (1) | CN2641609Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413823B (en) * | 2008-05-12 | 2011-01-19 | 浙江大学 | Portable piezoelectric ceramic bending element soil body shear wave speed test device |
| CN101963547A (en) * | 2010-09-30 | 2011-02-02 | 福建工程学院 | Special dynamic performance measuring and control system for vehicle rubber shock absorber |
| CN102221401A (en) * | 2011-04-15 | 2011-10-19 | 易孟良 | Vibration test stand and testing method for vibration sensor |
| CN101995330B (en) * | 2009-08-21 | 2012-03-21 | 中国船舶重工集团公司第七一三研究所 | Nondestructive testing device for disc spring damper and using method thereof |
| CN103112704A (en) * | 2013-02-26 | 2013-05-22 | 中国神华能源股份有限公司 | Device and method for monitoring longitudinal tear of conveying belt |
| CN105807104A (en) * | 2016-05-25 | 2016-07-27 | 天津易泰克科技有限公司 | Computer-based alternating-current sensor testing signal generation method |
| CN110361172A (en) * | 2018-04-04 | 2019-10-22 | 中国船舶重工集团公司第七一一研究所 | A kind of experimental rig and pilot system for torsional vibration damper |
| CN110823580A (en) * | 2019-11-12 | 2020-02-21 | 中国航发南方工业有限公司 | Vibration testing method for high-temperature turbine casing part of aircraft engine |
| CN111601226A (en) * | 2020-05-20 | 2020-08-28 | 杨志豪 | Method for testing vibration reduction effect of microphone fixing seat |
| CN111811815A (en) * | 2020-07-30 | 2020-10-23 | 重庆长安汽车股份有限公司 | System and method for testing natural frequency of torsional vibration reduction belt pulley |
-
2003
- 2003-01-10 CN CN 03200594 patent/CN2641609Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413823B (en) * | 2008-05-12 | 2011-01-19 | 浙江大学 | Portable piezoelectric ceramic bending element soil body shear wave speed test device |
| CN101995330B (en) * | 2009-08-21 | 2012-03-21 | 中国船舶重工集团公司第七一三研究所 | Nondestructive testing device for disc spring damper and using method thereof |
| CN101963547A (en) * | 2010-09-30 | 2011-02-02 | 福建工程学院 | Special dynamic performance measuring and control system for vehicle rubber shock absorber |
| CN102221401A (en) * | 2011-04-15 | 2011-10-19 | 易孟良 | Vibration test stand and testing method for vibration sensor |
| CN102221401B (en) * | 2011-04-15 | 2013-01-09 | 易孟良 | Vibration test stand and testing method for vibration sensor |
| CN103112704A (en) * | 2013-02-26 | 2013-05-22 | 中国神华能源股份有限公司 | Device and method for monitoring longitudinal tear of conveying belt |
| CN105807104A (en) * | 2016-05-25 | 2016-07-27 | 天津易泰克科技有限公司 | Computer-based alternating-current sensor testing signal generation method |
| CN110361172A (en) * | 2018-04-04 | 2019-10-22 | 中国船舶重工集团公司第七一一研究所 | A kind of experimental rig and pilot system for torsional vibration damper |
| CN110823580A (en) * | 2019-11-12 | 2020-02-21 | 中国航发南方工业有限公司 | Vibration testing method for high-temperature turbine casing part of aircraft engine |
| CN111601226A (en) * | 2020-05-20 | 2020-08-28 | 杨志豪 | Method for testing vibration reduction effect of microphone fixing seat |
| CN111601226B (en) * | 2020-05-20 | 2021-12-14 | 广东得胜电子有限公司 | Method for testing vibration reduction effect of microphone fixing seat |
| CN111811815A (en) * | 2020-07-30 | 2020-10-23 | 重庆长安汽车股份有限公司 | System and method for testing natural frequency of torsional vibration reduction belt pulley |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |