CN107453527A - A kind of micro-machine Noise Identification processing method and experimental provision based on resistance technique - Google Patents
A kind of micro-machine Noise Identification processing method and experimental provision based on resistance technique Download PDFInfo
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- CN107453527A CN107453527A CN201710832944.9A CN201710832944A CN107453527A CN 107453527 A CN107453527 A CN 107453527A CN 201710832944 A CN201710832944 A CN 201710832944A CN 107453527 A CN107453527 A CN 107453527A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003672 processing method Methods 0.000 title claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 76
- 238000001453 impedance spectrum Methods 0.000 claims description 34
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 19
- 239000004332 silver Substances 0.000 claims description 19
- 229910052709 silver Inorganic materials 0.000 claims description 19
- 239000003292 glue Substances 0.000 claims description 18
- 238000012545 processing Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000010358 mechanical oscillation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
- G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a kind of micro-machine Noise Identification processing method and experimental provision based on resistance technique, it is characterized in：The inventive system comprises：Electric impedance analyzer, rotor, motor case, the first piezoelectric transducer, the second piezoelectric transducer, the 3rd piezoelectric transducer, the 4th piezoelectric transducer, computer and its software processing system；The present invention carries out frequency sweep to rotor, motor case respectively by pasting piezoelectric ceramic piece on rotor, motor case, by electric impedance analyzer, finds to cause the frequency that rotor, motor case resonate respectively；By welding a number of spoke in motor case, change the resonant frequency of motor case, make the resonant frequency of motor case without falling into rotor resonance bands, so as to overcome due between rotor, motor case due to resonance caused by resonance, the present invention is simple in construction, reasonable in design.
Description
Technical field
The present invention relates to resistance technique and motor oscillating Noise Recognition field, more particularly to one kind to be based on resistance technique
Micro-machine Noise Identification processing method and experimental provision.
Background technology
Actuator of the motor as mechano-electronic product, it vibrates and noise size reflects the performance quality of product, electricity
Machine noise is also to weigh one of product technology level, important indicator of quality level of a motor manufacturer.As motor
Manufacturer will meet client's requirement small to noise of motor, how solve the problems, such as that noise of motor just turns into motor manufacturing row naturally
The problem of industry is paid special attention to.Motor oscillating is divided into electric and magnetic oscillation and mechanical oscillation.Wherein, mechanical oscillation are mainly included by rotor not
Mechanical oscillation caused by centrifugal force caused by balance and noise, bear vibration noise, brush vibrate with commutator sliding contact,
The end cap axial direction that is excited by bear vibration, radial vibration etc.；Fan rotation in the ventilating system of motor in addition be present and turn
Gas, the eddy current crack that son rotation is formed, fan rotation make caused by cooling gas periodically pulsing or air impingement barrier
Single-frequency noise；As resonated between rotor and stator, will also huge noise be produced.How to find and overcome due to rotor and determine
Noise caused by resonance is always the target that researcher is pursued between son.
The content of the invention
The invention aims to overcome the deficiencies in the prior art, there is provided a kind of micro-machine based on resistance technique
Noise Identification processing method and experimental provision.
The present invention is to be achieved through the following technical solutions：
A kind of micro-machine Noise Identification processing method based on resistance technique, the experimental provision bag that methods described uses
Include, electric impedance analyzer (1), rotor (2), motor case (17), the first piezoelectric transducer (3), the second piezoelectric transducer
(4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6), computer and its software processing system (8), first piezoelectricity
Sensor (3) includes the first pedestal (9), the first piezoelectric ceramic piece (13), and second piezoelectric transducer (4) includes the second pedestal
(10), the second piezoelectric ceramic piece (14), the 3rd piezoelectric transducer (5) include the 3rd pedestal (11), the 3rd piezoelectric ceramic piece
(15), the 4th piezoelectric transducer (6) includes the 4th pedestal (12), the 4th piezoelectric ceramic piece (16).
As the preferred technical solution of the present invention, the negative pole face of first piezoelectric ceramic piece (13) is gluing by conductive silver
It is attached on the first pedestal (9), the negative pole face of second piezoelectric ceramic piece (14) is pasted onto the second pedestal by conductive silver glue
(10) on, the negative pole face of the 3rd piezoelectric ceramic piece (15) is pasted onto on the 3rd pedestal (11) by conductive silver glue, and described
The negative pole face of four piezoelectric ceramic pieces (16) is pasted onto on the 4th pedestal (12) by conductive silver glue.
As the preferred technical solution of the present invention, the key position of rotor first (20), rotor are chosen on rotor (2)
Second key position (21), the key position of casing first (22), the key position of casing second (23), by first piezoelectric sensing
Device (3), the second piezoelectric transducer (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6) pass through modified low melting point respectively
High rigidity paraffin is pasted onto the key position of rotor first (20), the key position of rotor second (21), the key position of casing first
(22), on the key position of casing second (23).
The present invention passes through electric impedance analyzer point by pasting piezoelectric ceramic piece on (17) in rotor (2), motor case
It is other that frequency sweep is carried out to rotor (2), motor case (17), find to cause rotor (2), motor case (17) to occur respectively
The frequency of resonance；By welding a number of spoke in motor case, change the resonant frequency of motor case (17), make motor
The resonant frequency of casing (17) is not fallen into rotor (2) resonance bands, so as to overcome due to rotor (2), motor
Due to resonance caused by resonance between casing (17), the present invention is simple in construction, reasonable in design.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the present invention, and Fig. 2 is motor case sensing station schematic diagram, and Fig. 3 is motor machine
Shell sensor schematic, Fig. 4 are rotor sensing station schematic diagram, and Fig. 5 is rotor sensor schematic, and Fig. 6 is
First piezoelectric sensor structure schematic diagram, Fig. 7 are the second piezoelectric sensor structure schematic diagram, and Fig. 8 is the 3rd piezoelectric transducer knot
Structure schematic diagram, Fig. 9 are the 4th piezoelectric sensor structure schematic diagram, and Figure 10 is motor case impedance frequency sweep figure example, and Figure 11 is electricity
Machine rotor impedance frequency sweep figure example
1st, electric impedance analyzer；2nd, rotor；3rd, the first piezoelectric transducer；4th, the second piezoelectric transducer；5th, the 3rd piezoelectricity
Sensor；6th, the 4th piezoelectric transducer；8th, computer and its software processing system；9th, the first pedestal；10th, the second pedestal；11st, the 3rd
Pedestal；12nd, the 4th pedestal；13rd, the first piezoelectric ceramic piece；14th, the second piezoelectric ceramic piece；15th, the 3rd piezoelectric ceramic piece；16th,
Four piezoelectric ceramic pieces；17th, motor case；20th, the key position of rotor first；21st, the key position of rotor second；22nd, casing first
Key position；23rd, the key position of casing second
It is can be seen that by Figure 10, Figure 11 near 8200Hz, when motor works, the type motor can be sent due to electricity
Noise caused by machine rotor and motor case resonance.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein, only to explain the present invention,
It is not intended to limit the present invention.
Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11.
A kind of micro-machine Noise Identification processing method based on resistance technique, the experimental provision bag that methods described uses
Include, electric impedance analyzer (1), rotor (2), motor case (17), the first piezoelectric transducer (3), the second piezoelectric transducer
(4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6), computer and its software processing system (8), first piezoelectricity
Sensor (3) includes the first pedestal (9), the first piezoelectric ceramic piece (13), and second piezoelectric transducer (4) includes the second pedestal
(10), the second piezoelectric ceramic piece (14), the 3rd piezoelectric transducer (5) include the 3rd pedestal (11), the 3rd piezoelectric ceramic piece
(15), the 4th piezoelectric transducer (6) includes the 4th pedestal (12), the 4th piezoelectric ceramic piece (16)；It is characterized in that：It is described
The negative pole face of first piezoelectric ceramic piece (13) is pasted onto on the first pedestal (9) by conductive silver glue, second piezoelectric ceramic piece
(14) negative pole face is pasted onto on the second pedestal (10) by conductive silver glue, and the negative pole face of the 3rd piezoelectric ceramic piece (15) leads to
Cross conductive silver glue to be pasted onto on the 3rd pedestal (11), the negative pole face of the 4th piezoelectric ceramic piece (16) is pasted by conductive silver glue
On the 4th pedestal (12)；The key position of rotor first (20), the key position of rotor second are chosen on rotor (2)
(21), the key position of casing first (22), the key position of casing second (23), by first piezoelectric transducer (3), the second pressure
Electric transducer (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6) are glued by modified low melting point high rigidity paraffin respectively
The key position of rotor first (20), the key position of rotor second (21), the key position of casing first (22), casing second is attached to close
On key position (23).
A kind of micro-machine Noise Identification processing method based on resistance technique, it is characterised in that：The motor turns
The acquisition methods of the impedance spectrum figure of sub (2), motor case (17) include,
1) electric impedance analyzer (1) is first electrically connected with the first piezoelectric transducer (3), and electric impedance analyzer (1) is in 20Hz-
Frequency sweep is carried out in the range of 20kHz, the impedance spectrum figure that frequency sweep obtains first is saved in computer and its software processing system (8),
Data and image processing is carried out again；
2) electric impedance analyzer (1) first disconnects is electrically connected with the first piezoelectric transducer (3), then by electric impedance analyzer
(1) it is electrically connected with the second piezoelectric transducer (4), frequency sweep is carried out in the range of 20Hz-20kHz, the impedance frequency that frequency sweep is obtained
Spectrogram is first saved in computer and its software processing system (8), then carries out data and image processing；
3) electric connection of the electric impedance analyzer (1) and the second piezoelectric transducer (4) is disconnected, by electric impedance analyzer
(1) it is electrically connected with the 3rd piezoelectric transducer (5), frequency sweep is carried out in the range of 20Hz-20kHz, the impedance frequency that frequency sweep is obtained
Spectrogram is first saved in computer and its software processing system (8), then carries out data and image processing；
4) electric connection of the electric impedance analyzer (1) and the 3rd piezoelectric transducer (5) is disconnected, by electric impedance analyzer
(1) it is electrically connected with the 4th piezoelectric transducer (6), frequency sweep is carried out in the range of 20Hz-20kHz, the impedance frequency that frequency sweep is obtained
Spectrogram is first saved in computer and its software processing system (8), then carries out data and image processing.
A kind of micro-machine Noise Identification processing method based on resistance technique, it is characterised in that：The impedance point
The step of frequency sweep image procossing of analyzer (1), includes,
1) electric impedance analyzer (1) is compared to the first piezoelectric transducer (3), the frequency sweep spectrogram of the second piezoelectric transducer (4)
Image result, an impedance spectrum figure for taking impedance value big is the impedance spectrum figure of rotor (2)；
2) electric impedance analyzer (1) is compared to the 3rd piezoelectric transducer (53), the frequency sweep spectrogram of the 4th piezoelectric transducer (6)
Image result, an impedance spectrum figure for taking impedance value big is the impedance spectrum figure of motor case (17)；
A kind of micro-machine Noise Identification processing method based on resistance technique, it is characterised in that：Noise of motor
Impedance evaluation method includes,
1) in the range of 20Hz-20kHz, the impedance spectrum figure of observation rotor (2), record impedance value added is more than
A 100 Ω class value Ri (Z, f), i=1~m, m represent that impedance value added Ri is more than 100 Ω number, and impedance value added Ri is big
In 100 Ω be effective resonance peak of rotor (2) impedance spectrum figure；
2) in the range of 20Hz-20kHz, the impedance spectrum figure of observation motor case (17), record impedance value added is more than
A 100 Ω class value Qi (Z, f), i=1~n, n represent that impedance value added Qi is more than 100 Ω number, and impedance value added Qi is big
In 100 Ω be effective resonance peak of motor case (17) impedance spectrum figure；
3) compare effective resonance peak of rotor (2) impedance spectrum figure and motor case (17) impedance spectrum figure, look for
The effective resonance peak for going out motor case (17) impedance spectrum figure enters effective resonance peak of rotor (2) impedance spectrum figure
Bandwidth fi (1 ± 10%) in all resonance points, as the Ω of impedance value added Ri+Qi ＞ 400, represent at frequency fi, can send out
Raw strong resonance, when the motor works, can produce very big noise at fi；As the Ω ＞ Ri+Qi ＞ of impedance value added 100
400 Ω, represent at frequency fi, it may occur that resonance, when the motor works, certain noise can be produced at fi；Work as resistance
The anti-Ω of value added Ri+Qi ＜ 100, are represented at frequency fi, it may occur that small resonance, when the motor works, can be produced at fi
Noise can ignore.
A kind of micro-machine Noise Identification processing method based on resistance technique, it is characterised in that：Motor is eliminated to be total to
The method of noise of shaking includes, and for that can occur, in electric machine casing (17) external welding as the dry rule fills thing, reduces electric machine casing (17)
Resonant frequency, effective resonance peak Qi of motor case (17) impedance spectrum figure is will not fall into rotor (2) impedance
Effective resonance peak Ri of spectrogram bandwidth fi (1 ± 10%).
A kind of micro-machine Noise Identification processing method based on resistance technique, it is characterised in that：First base
Seat (9), the second pedestal (10), the 3rd pedestal (11), the material of the 4th pedestal (12) are conductive aluminium.
Experimental provision used in a kind of micro-machine Noise Identification processing method based on resistance technique, its feature
It is：The experimental provision includes, and electric impedance analyzer (1), rotor (2), the first piezoelectric transducer (3), the second piezoelectricity pass
Sensor (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6), computer and its software processing system (8), described first
Piezoelectric transducer (3) includes the first pedestal (9), the first piezoelectric ceramic piece (13), and second piezoelectric transducer (4) includes second
Pedestal (10), the second piezoelectric ceramic piece (14), the 3rd piezoelectric transducer (5) includes the 3rd pedestal (11), the 3rd piezoelectricity is made pottery
Ceramics (15), the 4th piezoelectric transducer (6) include the 4th pedestal (12), the 4th piezoelectric ceramic piece (16)；It is characterized in that：
The negative pole face of first piezoelectric ceramic piece (13) is pasted onto on the first pedestal (9) by conductive silver glue, the second piezoelectricity pottery
The negative pole face of ceramics (14) is pasted onto on the second pedestal (10) by conductive silver glue, the negative pole of the 3rd piezoelectric ceramic piece (15)
Face is pasted onto on the 3rd pedestal (11) by conductive silver glue, and the negative pole face of the 4th piezoelectric ceramic piece (16) passes through conductive silver glue
It is pasted onto on the 4th pedestal (12)；The key position of rotor first (20), the key position of rotor second are chosen on rotor (2)
(21), the key position of casing first (22), the key position of casing second (23), by first piezoelectric transducer (3), the second pressure
Electric transducer (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6) are glued by modified low melting point high rigidity paraffin respectively
The key position of rotor first (20), the key position of rotor second (21), the key position of casing first (22), casing second is attached to close
On key position (23).
A kind of ultrasonic vibration timeliness experimental provision of the accurate small-sized casting based on impedance analysis, it is characterised in that：
First pedestal (9), the second pedestal (10), the 3rd pedestal (11), the material of the 4th pedestal (12) are conductive aluminium.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (8)
1. a kind of micro-machine Noise Identification processing method based on resistance technique, the experimental provision that methods described uses include,
Electric impedance analyzer (1), rotor (2), motor case (17), the first piezoelectric transducer (3), the second piezoelectric transducer (4),
Three piezoelectric transducers (5), the 4th piezoelectric transducer (6), computer and its software processing system (8), first piezoelectric transducer
(3) include the first pedestal (9), the first piezoelectric ceramic piece (13), second piezoelectric transducer (4) include the second pedestal (10),
Second piezoelectric ceramic piece (14), the 3rd piezoelectric transducer (5) include the 3rd pedestal (11), the 3rd piezoelectric ceramic piece (15),
4th piezoelectric transducer (6) includes the 4th pedestal (12), the 4th piezoelectric ceramic piece (16)；It is characterized in that：Described first
The negative pole face of piezoelectric ceramic piece (13) is pasted onto on the first pedestal (9) by conductive silver glue, second piezoelectric ceramic piece (14)
Negative pole face be pasted onto by conductive silver glue on the second pedestal (10), the negative pole face of the 3rd piezoelectric ceramic piece (15) is by leading
Electric elargol is pasted onto on the 3rd pedestal (11), and the negative pole face of the 4th piezoelectric ceramic piece (16) is pasted onto by conductive silver glue
On four pedestals (12)；The key position of rotor first (20), the key position of rotor second (21), machine are chosen on rotor (2)
The key position of shell first (22), the key position of casing second (23), by first piezoelectric transducer (3), the second piezoelectric sensing
Device (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6) is pasted onto by modified low melting point high rigidity paraffin respectively to be turned
Sub first key position (20), the key position of rotor second (21), the key position of casing first (22), the key position of casing second
(23) on.
A kind of 2. micro-machine Noise Identification processing method based on resistance technique according to claim 1, it is characterised in that：
The rotor (2), the acquisition methods of impedance spectrum figure of motor case (17) include,
1) electric impedance analyzer (1) is first electrically connected with the first piezoelectric transducer (3), and electric impedance analyzer (1) is in 20Hz-
Frequency sweep is carried out in the range of 20kHz, the impedance spectrum figure that frequency sweep obtains first is saved in computer and its software processing system (8),
Data and image processing is carried out again；
2) electric impedance analyzer (1) first disconnect with the first piezoelectric transducer (3) be electrically connected with, then by electric impedance analyzer (1) with
Second piezoelectric transducer (4) is electrically connected with, and frequency sweep is carried out in the range of 20Hz-20kHz, and the impedance spectrum figure that frequency sweep is obtained is first
It is saved in computer and its software processing system (8), then carries out data and image processing；
3) electric connection of the electric impedance analyzer (1) and the second piezoelectric transducer (4) is disconnected, by electric impedance analyzer (1) with
3rd piezoelectric transducer (5) is electrically connected with, and frequency sweep is carried out in the range of 20Hz-20kHz, and the impedance spectrum figure that frequency sweep is obtained is first
It is saved in computer and its software processing system (8), then carries out data and image processing；
4) electric connection of the electric impedance analyzer (1) and the 3rd piezoelectric transducer (5) is disconnected, by electric impedance analyzer (1) with
4th piezoelectric transducer (6) is electrically connected with, and frequency sweep is carried out in the range of 20Hz-20kHz, and the impedance spectrum figure that frequency sweep is obtained is first
It is saved in computer and its software processing system (8), then carries out data and image processing.
A kind of 3. micro-machine Noise Identification processing method based on resistance technique according to claim 1, it is characterised in that：
The step of frequency sweep image procossing of the electric impedance analyzer (1), includes,
1) electric impedance analyzer (1) is compared to the first piezoelectric transducer (3), the figure of the frequency sweep spectrogram of the second piezoelectric transducer (4)
As result, an impedance spectrum figure for taking impedance value big is the impedance spectrum figure of rotor (2)；
2) electric impedance analyzer (1) is compared to the 3rd piezoelectric transducer (53), the figure of the frequency sweep spectrogram of the 4th piezoelectric transducer (6)
As result, an impedance spectrum figure for taking impedance value big is the impedance spectrum figure of motor case (17).
A kind of 4. micro-machine Noise Identification processing method based on resistance technique according to claim 1, it is characterised in that：
The impedance evaluation method of noise of motor includes,
1) in the range of 20Hz-20kHz, the impedance spectrum figure of observation rotor (2), record impedance value added is more than 100 Ω
A class value Ri (Z, f), i=1~m, m represent that impedance value added Ri is more than 100 Ω number, and impedance value added Ri is more than 100
Ω is effective resonance peak of rotor (2) impedance spectrum figure；
2) in the range of 20Hz-20kHz, the impedance spectrum figure of observation motor case (17), record impedance value added is more than 100 Ω
A class value Qi (Z, f), i=1~n, n represent that impedance value added Qi is more than 100 Ω number, and impedance value added Qi is more than 100
Ω is effective resonance peak of motor case (17) impedance spectrum figure；
3) compare effective resonance peak of rotor (2) impedance spectrum figure and motor case (17) impedance spectrum figure, find out electricity
Effective resonance peak of machine casing (17) impedance spectrum figure enters the band of effective resonance peak of rotor (2) impedance spectrum figure
Wide fiAll resonance points in (1 ± 10%), as the Ω of impedance value added Ri+Qi ＞ 400, represent in frequency fiPlace, it may occur that strong
Resonance, can be in f when the motor worksiPlace can produce very big noise；As the Ω of 100 Ω ＞ Ri+Qi ＞ of impedance value added 400,
Represent in frequency fiPlace, it may occur that resonance, can be in f when the motor worksiPlace can produce certain noise；When impedance value added
The Ω of Ri+Qi ＜ 100, are represented in frequency fiPlace, it may occur that small resonance, when the motor works, in fiPlace can caused by noise can be with
Ignore.
A kind of 5. micro-machine Noise Identification processing method based on resistance technique according to claim 1, it is characterised in that：
Eliminating the method for motor resonance noise includes, and for that can occur, thing, reduction electricity are filled in electric machine casing (17) external welding such as dry rule
The resonant frequency of casing body (17), turn effective resonance peak Qi of motor case (17) the impedance spectrum figure motor that will not fall into
Effective resonance peak Ri of sub (2) impedance spectrum figure bandwidth fi(1 ± 10%).
A kind of 6. micro-machine Noise Identification processing method based on resistance technique according to claim 1, it is characterised in that：
First pedestal (9), the second pedestal (10), the 3rd pedestal (11), the material of the 4th pedestal (12) are conductive aluminium.
A kind of 7. experiment used in micro-machine Noise Identification processing method based on resistance technique according to claim 1
Device, it is characterised in that：The experimental provision includes, electric impedance analyzer (1), rotor (2), the first piezoelectric transducer (3),
Second piezoelectric transducer (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6), computer and its software processing system
(8), first piezoelectric transducer (3) includes the first pedestal (9), the first piezoelectric ceramic piece (13), second piezoelectric sensing
Device (4) includes the second pedestal (10), the second piezoelectric ceramic piece (14), and the 3rd piezoelectric transducer (5) includes the 3rd pedestal
(11), the 3rd piezoelectric ceramic piece (15), the 4th piezoelectric transducer (6) include the 4th pedestal (12), the 4th piezoelectric ceramic piece
(16)；It is characterized in that：The negative pole face of first piezoelectric ceramic piece (13) is pasted onto the first pedestal (9) by conductive silver glue
On, the negative pole face of second piezoelectric ceramic piece (14) is pasted onto on the second pedestal (10) by conductive silver glue, the 3rd pressure
The negative pole face of electroceramics piece (15) is pasted onto on the 3rd pedestal (11) by conductive silver glue, the 4th piezoelectric ceramic piece (16)
Negative pole face is pasted onto on the 4th pedestal (12) by conductive silver glue；The key position of rotor first is chosen on rotor (2)
(20), the key position of rotor second (21), the key position of casing first (22), the key position of casing second (23), by described
One piezoelectric transducer (3), the second piezoelectric transducer (4), the 3rd piezoelectric transducer (5), the 4th piezoelectric transducer (6) pass through respectively
Modified low melting point high rigidity paraffin is pasted onto the key position of rotor first (20), the key position of rotor second (21), casing first
On key position (22), the key position of casing second (23).
8. a kind of ultrasonic vibration timeliness experimental provision of the accurate small-sized casting based on impedance analysis according to claim 7,
It is characterized in that：First pedestal (9), the second pedestal (10), the 3rd pedestal (11), the material of the 4th pedestal (12) are conduction
Aluminium.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113049081A (en) * | 2019-12-27 | 2021-06-29 | 青岛宏达赛耐尔科技股份有限公司 | Fan operation tool test method and test system |
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2017
- 2017-09-15 CN CN201710832944.9A patent/CN107453527A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049081A (en) * | 2019-12-27 | 2021-06-29 | 青岛宏达赛耐尔科技股份有限公司 | Fan operation tool test method and test system |
| CN113049081B (en) * | 2019-12-27 | 2023-03-14 | 青岛宏达赛耐尔科技股份有限公司 | Fan operation tool test method and test system |
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