CN109540502A - A kind of transmission parts test macro for taking into account high and low rotating speed mode - Google Patents
A kind of transmission parts test macro for taking into account high and low rotating speed mode Download PDFInfo
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- CN109540502A CN109540502A CN201811212151.8A CN201811212151A CN109540502A CN 109540502 A CN109540502 A CN 109540502A CN 201811212151 A CN201811212151 A CN 201811212151A CN 109540502 A CN109540502 A CN 109540502A
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- signal
- transmission parts
- acceleration
- acquisition unit
- high speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of transmission parts test macros for taking into account high and low rotating speed mode, comprising: acceleration transducer is mounted on default transmission parts, and the acceleration signal of transmission parts is preset for real-time measurement；Tach signal acquisition unit is mounted on default transmission parts, presets the tach signal on transmission parts for real-time measurement, the tach signal includes pulse signal form and/or sinusoidal signal form；High Speed Analog amount acquisition unit, respectively with acceleration transducer and tach signal acquisition unit, the tach signal of the default transmission parts of the acceleration signal and high speed acquisition tach signal acquisition unit measurement of default transmission parts for the measurement of high speed acquisition acceleration transducer.The present invention can at a high speed, reliably acquire the tach signal of high tachometric survey output or the speed signal of test of low rotating speed output, to meet high-speed drive measurement demand required by the emerging industry including new-energy automobile.
Description
Technical field
The present invention relates to the field of test technology of transmission parts, more particularly to a kind of transmission for taking into account high and low rotating speed mode
Unit test system.
Background technique
In gearing, the variation of load and the defect of moving component can cause to vibrate, and cause to radiate accordingly and make an uproar
Sound.And the form specifically vibrated, it is related with the architectural characteristic of mechanical movement and stationary parts.Order analysis be one by frequency spectrum and
The tool that time history associates with the revolving speed of transmission parts can guarantee organizational integrity using order analysis technology
Under the premise of, mechanical breakdown position and reason are found out, and failure is monitored and is prevented.
It is shown in Figure 1, currently, the test macro based on order analysis, can only receive pulse signal as revolving speed mostly
Signal is calculated, and is generated frequency limit by pulse, when leading to use pulse signal as tach signal, is not suitable for high revolving speed
Operating condition.Currently, the emerging industry including new-energy automobile, high-speed drive gradually increase, the measurement of revolving speed mostly uses rotation
Transformer exports sinusoidal signal, to achieve the purpose that high revolving speed output.
But there is presently no a kind of test macros, can at a high speed, reliably acquire the revolving speed of high tachometric survey output
Signal or the speed signal of test of low rotating speed output, to meet required by the emerging industry including new-energy automobile
High-speed drive measurement demand.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of transmission parts test macro for taking into account high and low rotating speed mode,
The tach signal of high tachometric survey output or the speed signal of test of low rotating speed output can at a high speed, be reliably acquired, thus
Meet high-speed drive measurement demand required by the emerging industry including new-energy automobile, be conducive to widely apply, has
There is great practice significance.
For this purpose, the present invention provides a kind of transmission parts test macro for taking into account high and low rotating speed mode, including acceleration passes
Sensor, tach signal acquisition unit and High Speed Analog amount acquisition unit, in which:
Acceleration transducer is mounted on default transmission parts, and the acceleration letter of transmission parts is preset for real-time measurement
Number；
Tach signal acquisition unit is mounted on default transmission parts, is preset for real-time measurement and is turned on transmission parts
Fast signal, the tach signal include pulse signal form and/or sinusoidal signal form；
High Speed Analog amount acquisition unit is used for high speed acquisition respectively with acceleration transducer and tach signal acquisition unit
Tach signal acquisition described in the acceleration signal and high speed acquisition of the default transmission parts of the acceleration transducer measurement is single
The tach signal of the default transmission parts of member measurement.
Wherein, the High Speed Analog amount acquisition unit is on-site programmable gate array FPGA.
Wherein, when tach signal is pulse signal form, the on-site programmable gate array FPGA, for angularly
Position resampling is carried out to acceleration signal, makes the acceleration of constant duration that is, in the rising edge of pulse signal or failing edge
Degree signal is converted into equiangularly spaced acceleration signal.
Wherein, when tach signal is sinusoidal signal form, the on-site programmable gate array FPGA, for angularly
Position, i.e., equiphase interval to acceleration signal carry out resampling, be converted into the acceleration signal of constant duration
Equiangularly spaced acceleration signal.
Wherein, further include computing unit:
Wherein, the High Speed Analog amount acquisition unit is also used to believe the acceleration of the default transmission parts of high speed acquisition
Number and tach signal, be sent to computing unit in real time；
Computing unit is connected with High Speed Analog amount acquisition unit, for sending to the High Speed Analog amount acquisition unit
Default transmission parts acceleration signal and tach signal calculated in real time, obtain corresponding calculated result.
Wherein, the computing unit, specifically for being adopted according to prefixed time interval to vibration signal and tach signal
Collection, then by the vibration signal of constant duration, angle domain resampling is carried out according to tach signal, to be converted to equiangularly spaced
Vibration signal, then carry out Fourier transformation, realize that order analysis calculates, finally obtain calculated result.
Wherein, the computing unit be programmable controller PLC, central processor CPU, digital signal processor DSP or
Person's single-chip microprocessor MCU.
Wherein, the tach signal acquisition unit includes rotating speed coder and rotary transformer or hand-held tachometer
And rotary transformer.
By the above technical solution provided by the invention as it can be seen that compared with prior art, the present invention provides one kind to take into account
The transmission parts test macro of high and low rotating speed mode can at a high speed, reliably acquire the tach signal of high tachometric survey output
Or the speed signal of test of low rotating speed output, to meet high speed required by the emerging industry including new-energy automobile
It is driven measurement demand, is conducive to widely apply, there is great practice significance.
Detailed description of the invention
Fig. 1 is the structural block diagram of the existing test macro based on order analysis；
Fig. 2 is a kind of structural block diagram for the transmission parts test macro for taking into account high and low rotating speed mode provided by the invention；
Fig. 3 is the field-programmable in a kind of transmission parts test macro for taking into account high and low rotating speed mode provided by the invention
Gate array (FPGA) carries out the schematic diagram of resampling to the tach signal of pulse signal form；
Fig. 4 is the field-programmable in a kind of transmission parts test macro for taking into account high and low rotating speed mode provided by the invention
Gate array (FPGA) carries out the schematic diagram of resampling to the tach signal of sinusoidal signal form.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Referring to fig. 2 to Fig. 4, the present invention provides a kind of transmission parts test macros for taking into account high and low rotating speed mode, including
Acceleration transducer 100, tach signal acquisition unit 200 and High Speed Analog amount acquisition unit 300, in which:
Acceleration transducer 100 is mounted on default transmission parts (such as transmission shaft, semiaxis of automobile etc.), for real
When measure the acceleration signals of default transmission parts；
Tach signal acquisition unit 200 is mounted on default transmission parts, presets on transmission parts for real-time measurement
Tach signal, the tach signal include pulse signal form and/or sinusoidal signal form；
High Speed Analog amount acquisition unit 300 is used for respectively with acceleration transducer 100 and tach signal acquisition unit 200
Turn described in the acceleration signal and high speed acquisition of the default transmission parts of the measurement of acceleration transducer 100 described in high speed acquisition
The tach signal for the default transmission parts that velocity signal capturing unit 200 measures.
It should be noted that in the present invention, the default transmission parts can be any one user and survey
Try the transmission parts, such as transmission shaft, the semiaxis of automobile etc. of detection.
In the present invention, in specific implementation, the acceleration transducer 100 can be any one existing measurement accuracy
High acceleration transducer.
In the present invention, in specific implementation, the High Speed Analog amount acquisition unit 300 is preferably field programmable gate array
(FPGA)。
In the present invention, in specific implementation, the tach signal acquisition unit 200 includes rotating speed coder and rotation transformation
Device or hand-held tachometer and rotary transformer.Wherein, rotating speed coder and hand-held tachometer, can be used for acquiring arteries and veins
Rush the tach signal of signal form；Rotary transformer, for acquiring the tach signal of sine form.
In specific implementation, the hand-held tachometer can be the small wild survey device of HT-5500 model.The rotary transformer
It can be the rotary transformer of Siemens's SIN/COS 1VPP 6FX2001-3GC50 model.
In the present invention, in specific implementation, the High Speed Analog amount acquisition unit 300 is preferably field programmable gate array
(FPGA), High Speed Analog amount acquisition use site programmable gate array (FPGA) carries out, and realizes multi channel signals synchronized sampling.
It is shown in Figure 3 in specific implementation, when tach signal is pulse signal form, the field-programmable gate array
It arranges (FPGA), in equal angular position, i.e., in the rising edge of pulse signal or failing edge, (being vibrated to acceleration signal
Signal) resampling is carried out, so that the acceleration signal (i.e. vibration signal) of constant duration is converted into equiangularly spaced acceleration
Signal (i.e. vibration signal).Order analysis is carried out in next step it is then possible to facilitate.Therefore, the present invention is by establishing revolving speed and vibration
Dynamic relationship realizes the vibration analysis in non-constant velocity movement.
It is shown in Figure 4 in specific implementation, when tach signal is sinusoidal signal form, the field-programmable gate array
It arranges (FPGA), in equal angular position, i.e., being adopted in equiphase interval to acceleration signal (i.e. vibration signal) again
Sample makes the acceleration signal (i.e. vibration signal) of constant duration be converted into equiangularly spaced acceleration signal (i.e. vibration letter
Number).Order analysis is carried out in next step it is then possible to facilitate.Therefore, the present invention is realized by establishing the relationship of revolving speed and vibration
Vibration analysis in non-constant velocity movement.
In the present invention, in specific implementation, in order to the acceleration signal collected of High Speed Analog amount acquisition unit 300 and
Tach signal carries out test analysis (such as order analysis), further includes calculating for transmission parts test macro provided by the invention
Unit 400:
Wherein, the High Speed Analog amount acquisition unit 300 is also used to the acceleration of the default transmission parts of high speed acquisition
Signal and tach signal are sent to computing unit 400 in real time；
Computing unit 400 is connected with High Speed Analog amount acquisition unit 300, single for acquiring to the High Speed Analog amount
The acceleration signal and tach signal for the default transmission parts that member 300 is sent are calculated in real time, obtain corresponding calculated result.
In specific implementation, the computing unit 400 can be programmable controller PLC, central processor CPU, number letter
Number processor DSP or single-chip microprocessor MCU.
In the present invention, acceleration signal, that is, vibration signal.Tach signal and vibration signal are this system test analysis
Basis and data source.
For the present invention, it should be noted that computing unit 400 can be embeded processor, using built-in Linux
System, does not need processing external interrupt, real-time with higher, and FPGA (field programmable gate array) is used as High Speed Analog amount
Acquisition unit 300, according to preset certain time interval, after being acquired to vibration with tach signal, in embedded system
The vibration signal (i.e. acceleration signal) of constant duration is carried out angle domain according to tach signal information by data processor
Resampling is converted to equiangularly spaced vibration signal, then carries out Fourier transformation, to realize the real-time order analysis of signal
It calculates.
In the present invention, the computing unit 400 is calculated in real time, and the principle of use is order analysis, i.e., specific to use
Vibration signal and tach signal are acquired according to default certain time interval, then by the vibration signal of constant duration,
According to tach signal information, angle domain resampling is carried out, to be converted to equiangularly spaced vibration signal, then carries out Fourier
Transformation realizes that order analysis calculates, finally obtains calculated result.
It should also be noted that, the present invention in order to realize accurate order analysis, acquires vibration signal and tach signal
Frequency requirement is relatively high, and therefore, the present invention, as High Speed Analog amount acquisition unit 300, can effectively improve sampling frequency using FPGA
Rate realizes high-precision order analysis.
In the present invention, the calculated result of the computing unit 400, as above-mentioned carry out order analysis calculating as a result,
It will preset tach signal in certain time and vibration signal carries out the knot for carrying out Fourier transformation after angle domain resampling again
Fruit.The calculated result of the computing unit 400, also the test macro of entire transmission parts needs the test knot obtained
Fruit.
It should be noted that the method for resampling, is existing method, is the prior art, is not unfolded to describe herein.
It should be noted that for the present invention low turn can be taken into account according to the speed signal of high tachometric survey output at present
Fast mode, the acquisition of High Speed Analog amount is carried out using FPGA (field programmable gate array), while being carried out to tach signal and being added
The high-speed data acquisition of speed signal (i.e. vibration signal), tach signal can receive pulse and sinusoidal signal, recently enter meter
Unit is calculated to be calculated.
For the present invention, it should be noted that the measurement of the slow-speed of revolution at present is all made of impulse form, and feature is cost
It is low, facilitate acquisition, technical maturity is high.But because interpulse period can not infinitely reduce, high revolving speed can not be suitable for
Operating condition.Universal with new-energy automobile, high-speed motor is using more and more, and revolving speed is higher and higher, under high-speed working condition
Using sin/cos pattern analog quantity output transducer, pulse spacing, but its special signal output form can be effectively solved the problems, such as,
Also result in the less situation of current acquisition means.
For this purpose, the present invention is by using FPGA (field programmable gate array) progress High Speed Analog amount, (analog quantity includes height
The tach signal and acceleration signal of tachometric survey output and the tach signal and acceleration signal of test of low rotating speed output)
Acquisition.
In conclusion compared with prior art, a kind of transmission parts for taking into account high and low rotating speed mode provided by the invention
Test macro can at a high speed, reliably acquire the tach signal of high tachometric survey output or the speed of test of low rotating speed output
Signal is spent, to meet high-speed drive measurement demand required by the emerging industry including new-energy automobile, is conducive to wide
It applies generally, there is great practice significance.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of transmission parts test macro for taking into account high and low rotating speed mode, which is characterized in that including acceleration transducer
(100), tach signal acquisition unit (200) and High Speed Analog amount acquisition unit (300), in which:
Acceleration transducer (100), is mounted on default transmission parts, and the acceleration letter of transmission parts is preset for real-time measurement
Number；
Tach signal acquisition unit (200), is mounted on default transmission parts, presets for real-time measurement and turns on transmission parts
Fast signal, the tach signal include pulse signal form and/or sinusoidal signal form；
High Speed Analog amount acquisition unit (300) is used respectively with acceleration transducer (100) and tach signal acquisition unit (200)
The acceleration signal of the default transmission parts of the acceleration transducer described in high speed acquisition (100) measurement and high speed acquisition institute
State the tach signal of the default transmission parts of tach signal acquisition unit (200) measurement.
2. transmission parts test macro as described in claim 1, which is characterized in that the High Speed Analog amount acquisition unit
It (300) is on-site programmable gate array FPGA.
3. transmission parts test macro as claimed in claim 2, which is characterized in that when tach signal is pulse signal form
When, the on-site programmable gate array FPGA, in equal angular position, i.e., in the rising edge of pulse signal or failing edge,
Resampling is carried out to acceleration signal, the acceleration signal of constant duration is made to be converted into equiangularly spaced acceleration signal.
4. transmission parts test macro as claimed in claim 2, which is characterized in that when tach signal is sinusoidal signal form
When, the on-site programmable gate array FPGA, in equal angular position, i.e., equiphase interval to acceleration signal into
Row resampling makes the acceleration signal of constant duration be converted into equiangularly spaced acceleration signal.
5. transmission parts test macro according to any one of claims 1 to 4, which is characterized in that further include computing unit
(400):
Wherein, the High Speed Analog amount acquisition unit (300) is also used to believe the acceleration of the default transmission parts of high speed acquisition
Number and tach signal, be sent to computing unit (400) in real time；
Computing unit (400) is connected with High Speed Analog amount acquisition unit (300), single for acquiring to the High Speed Analog amount
The acceleration signal and tach signal for the default transmission parts that first (300) are sent are calculated in real time, obtain corresponding calculating knot
Fruit.
6. transmission parts test macro as claimed in claim 5, which is characterized in that the computing unit (400) is specifically used for
Vibration signal and tach signal are acquired according to prefixed time interval, then by the vibration signal of constant duration, foundation turns
Fast signal carries out angle domain resampling, to be converted to equiangularly spaced vibration signal, then carries out Fourier transformation, realizes rank
Secondary analytical calculation, finally obtains calculated result.
7. transmission parts test macro as claimed in claim 5, which is characterized in that the computing unit (400) is programmable
Controller PLC, central processor CPU, digital signal processor DSP or single-chip microprocessor MCU.
8. transmission parts test macro as described in claim 1, which is characterized in that the tach signal acquisition unit (200)
Including rotating speed coder and rotary transformer or hand-held tachometer and rotary transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212151.8A CN109540502A (en) | 2018-10-18 | 2018-10-18 | A kind of transmission parts test macro for taking into account high and low rotating speed mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212151.8A CN109540502A (en) | 2018-10-18 | 2018-10-18 | A kind of transmission parts test macro for taking into account high and low rotating speed mode |
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| CN109540502A true CN109540502A (en) | 2019-03-29 |
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| CN201811212151.8A Pending CN109540502A (en) | 2018-10-18 | 2018-10-18 | A kind of transmission parts test macro for taking into account high and low rotating speed mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110186510A (en) * | 2019-06-05 | 2019-08-30 | 北京博识创智科技发展有限公司 | A kind of rotary machinery fault diagnosis method and rotating machinery |
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| GB2553466A (en) * | 2017-11-06 | 2018-03-07 | Benn Rothschild Michael | Digital hardware based system and method for preventing the onset of trailer oscillations and control thereof |
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| CN203362397U (en) * | 2013-07-17 | 2013-12-25 | 太原电力高等专科学校 | Data acquisition system of wind turbine generator system |
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| CN107655693A (en) * | 2017-11-02 | 2018-02-02 | 哈尔滨理工大学 | A kind of engine of boat and ship fault diagnosis system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110186510B (en) * | 2019-06-05 | 2021-06-22 | 北京博识创智科技发展有限公司 | Rotary machine fault diagnosis method and rotary machine equipment |
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Application publication date: 20190329 |