CN107884712A - The determination method and device of the undulate quantity curve of motor input current - Google Patents
The determination method and device of the undulate quantity curve of motor input current Download PDFInfo
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- CN107884712A CN107884712A CN201711021730.XA CN201711021730A CN107884712A CN 107884712 A CN107884712 A CN 107884712A CN 201711021730 A CN201711021730 A CN 201711021730A CN 107884712 A CN107884712 A CN 107884712A
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- input current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
Abstract
The invention discloses a kind of determination method and device of the undulate quantity curve of motor input current, wherein, the method overcome conventional current analysis method it is existing be difficult to quantify the degree of current fluctuation and be difficult to find and Cutoff current fluctuation corresponding to operating mode it is insufficient, more accurate current wave momentum can be obtained, can also accurately identify operating mode corresponding to current fluctuation.
Description
Technical field
The present invention relates to technical field of vehicle control, more particularly to a kind of determination of the undulate quantity curve of motor input current
Method and device.
Background technology
The motor input current fluctuation of automobile drive motor can directly result in the fluctuation of the output torque of automobile drive motor,
So as to cause energy consumption to increase, the shake of vehicle is also resulted in, influences the comfortableness taken.
Conventional motor input current analysis method is briefly introduced herein.Referring to Fig. 1, the curve 0 in Fig. 1 is the defeated of motor
Go out change in torque curve, curve 1 is the real-time change curve of motor input current, and curve 3 is the virtual value of motor input current
Curve.In the motor input current analysis method of routine, the fluctuation situation of electric current is assessed by curve 1, is assessed by curve 3
Whether the output torque of motor occurs significantly fluctuating.However, from fig. 1, it can be seen that the virtual value of motor input current is without obvious ripple
When dynamic, there is also obvious fluctuation for the output torque of motor；Also can not accurate evaluation motor input electricity by real-time change curve 1
The fluctuation situation of stream.Therefore, how preferably to assess motor input current turns into technical problem urgently to be resolved hurrily.
The content of the invention
The application is intended to one of technical problem at least solving in correlation technique to a certain extent.
Therefore, first purpose of the application is a kind of determination side for the undulate quantity curve for proposing motor input current
Method, it the method overcome and be difficult to quantify the degree of current fluctuation and be difficult to find existing for conventional current analysis method
And operating mode deficiency corresponding to Cutoff current fluctuation, more accurate current wave momentum can be obtained, can also accurately identify current wave
Operating mode corresponding to dynamic.
Second purpose of the application is a kind of determining device for the undulate quantity curve for proposing motor input current.
For the above-mentioned purpose, the application first aspect embodiment proposes a kind of undulate quantity curve of motor input current
Method is determined, including：
The real-time curve of corresponding motor input current when obtaining automobile drive motor operating；
The external envelope curve of the motor input current is obtained according to the real-time curve；
The virtual value curve of corresponding motor input current when obtaining automobile drive motor operating；
According to the undulate quantity curve of motor input current described in the external envelope curve and the virtual value curve acquisition.
Method as described above, the input of the motor according to the external envelope curve and the virtual value curve acquisition
The undulate quantity curve of electric current, including：
Obtain virtual value curve corresponding to external envelope curve；
By the virtual value curve of virtual value curve corresponding to external envelope curve and the motor input current subtracted each other with
Obtain the undulate quantity curve of the motor input current.
Method as described above, described according to the external envelope curve and the virtual value curve of the motor input current
After the undulate quantity curve for obtaining the motor input current, in addition to：
Determine the section that undulate quantity is big in the undulate quantity curve；
According to the period corresponding to the big section of the undulate quantity, operating mode corresponding to the big section of the undulate quantity is determined.
Method as described above, the external envelope curve that the motor input current is obtained according to the real-time curve,
Including：
Hilbert transform is carried out to the real-time curve to obtain the external envelope curve of the motor input current.
Method as described above, the virtual value song for obtaining corresponding motor input current when automobile drive motor operates
Line includes：
The virtual value curve of corresponding motor input current when automobile drive motor operating is extracted from CAN.
For the above-mentioned purpose, the application second aspect embodiment proposes a kind of undulate quantity curve of motor input current
Determining device, including：
First acquisition module, for obtaining the real-time curve of corresponding motor input current when automobile drive motor operates；
Second acquisition module, for obtaining the external envelope curve of the motor input current according to the real-time curve；
3rd acquisition module, for obtaining the virtual value of corresponding motor input current when automobile drive motor operates
Curve；
First determining module, for the motor input electricity according to the external envelope curve and the virtual value curve acquisition
The undulate quantity curve of stream.
Device as described above, first determining module are specifically used for：It is bent to obtain virtual value corresponding to external envelope curve
Line；The virtual value curve of virtual value curve corresponding to external envelope curve and the motor input current is subtracted each other to obtain
State the undulate quantity curve of motor input current.
Device as described above, in addition to：
Second determining module, for inputting electricity according to the external envelope curve and the motor in first determining module
After the undulate quantity curve of motor input current described in the virtual value curve acquisition of stream, undulate quantity in the undulate quantity curve is determined
Big section；According to the period corresponding to the big section of the undulate quantity, operating mode corresponding to the big section of the undulate quantity is determined.
Device as described above, second acquisition module are specifically used for：Hilbert change is carried out to the real-time curve
Change to obtain the external envelope curve of the motor input current.
Device as described above, the 3rd acquisition module are specifically used for：Automobile drive motor fortune is extracted from CAN
The virtual value curve of corresponding motor input current when turning.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the curve map of exemplary one motor input current；
Fig. 2 is the flow chart of the determination method of the undulate quantity curve for the motor input current that one embodiment of the invention provides；
Fig. 3 is the curve map of exemplary two motor input current；
Fig. 4 is the curve map of exemplary three motor input current；
Fig. 5 is the curve map of exemplary four motor input current；
Fig. 6 is the curve map of exemplary five motor input current；
Fig. 7 is the flow of the determination method of the undulate quantity curve for the motor input current that further embodiment of this invention provides
Figure；
Fig. 8 is the structural representation of the determining device of the undulate quantity curve for the motor input current that one embodiment of the invention provides
Figure.
Embodiment
Embodiments herein is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the application, and it is not intended that limitation to the application.
Fig. 2 is the flow chart of the determination method of the undulate quantity curve for the motor input current that one embodiment of the invention provides,
The executive agent of the determination method of the undulate quantity curve of the motor input current of the present embodiment is the undulate quantity of motor input current
The determination square law device of curve, the device can be made up of software and/or hardware, and the device can be integrated in ECU in vehicle
In (ElectronicControl Unit, electronic control unit).
As shown in Fig. 2 the determination method of the undulate quantity curve for the motor input current that the present embodiment provides, including following step
Suddenly：
S101, the real-time curve for obtaining corresponding motor input current when automobile drive motor operates.
For example, it is defeated by the harvester motor in real time such as current sensor when automobile drive motor operates
Enter electric current, while the real-time curve of output motor input current.Real-time curve in the present embodiment can be understood as motor input
The time domain waveform of electric current, i.e. motor input current change with time relation.It is related to two curves by taking Fig. 3 as an example, in Fig. 3, its
In, curve 1 is the real-time curve of motor input current, and what the curve 1 characterized is that motor input current value changes with time pass
System, and curve 2 is the external envelope curve of curve 1.
S102, the external envelope curve according to the real-time curve acquisition motor input current.
Specifically, external envelope curve can reflect that the peak value of real-time curve changes with time relation, and then can use
To analyze the undulate quantity of motor input current.
In a kind of possible implementation, step S102 specific implementation is：" real-time curve is wished
You are converted to obtain the external envelope curve of the motor input current Bert ".Hilbert (Hilbert) conversion be it is a kind of more
The data processing method of effective Envelope Analysis, the present embodiment convert progress Envelope Analysis using Hilbert and can obtained more
Accurate external envelope curve, be advantageous to the follow-up undulate quantity for preferably analyzing motor input current.
S103, the virtual value curve for obtaining corresponding motor input current when automobile drive motor operates.
For example, virtual value curve can calculate acquisition by carrying out virtual value to real-time curve, can also be total from CAN
The virtual value curve of corresponding motor input current when automobile drive motor operating is extracted in line.For example, the vehicle of automobile
Controller can be monitored in real time to the state of automobile drive motor, and monitor the real-time change of motor input current, according to electricity
The virtual value curve of the real-time change generation motor input current of machine input current.Therefore, the present embodiment can pass through CAN
The virtual value curve of corresponding motor input current when rapidly extracting automobile drive motor operating.By taking Fig. 4 as an example, curve 3 is
For the virtual value curve of motor input current.
S104, motor inputs according to the virtual value curve acquisition of the external envelope curve and the motor input current
The undulate quantity curve of electric current.
In a kind of possible implementation, step S104 specific implementation is：" obtain corresponding to external envelope curve
Virtual value curve；The virtual value curve of virtual value curve corresponding to external envelope curve and the motor input current is subtracted each other
To obtain the undulate quantity curve of the motor input current ".
Specifically, Fig. 5 is related to 2 curves, and curve 4 is virtual value curve corresponding to external envelope curve, and curve 3 is virtual value
Curve.Curve 5 in Fig. 6 is undulate quantity curve.It will be appreciated from fig. 6 that acquired undulate quantity curve is not to be put down as curve 3
Sliding curve, but the curve that fluctuation range is obvious, it can significantly know the big area of undulate quantity using undulate quantity curve
There is the big operating mode of undulate quantity in section, convenient follow-up identification.
In the present embodiment, it is that virtual value is peak value using the relation of finite value and peak valueSo only need to be by curve
2 i.e. external envelope curves are multiplied byVirtual value curve corresponding to external envelope curve i.e. curve 4 is converted into, and then can be with simple and convenient
Ground obtains virtual value curve corresponding to external envelope curve.
It is pointed out that Fig. 1 and Fig. 3, into Fig. 6, transverse axis corresponds to the time, the longitudinal axis corresponds to amplitude.
In the present embodiment, virtual value curve corresponding to external envelope curve is the envelope signal progress to motor input current
What virtual value was calculated, it can be understood as carrying out the peak signal of motor input current calculating institute to a certain extent
, the virtual value curve of motor input current is to carry out virtual value to the time-domain signal of motor input current to be calculated.That
, to a certain extent, the difference of virtual value curve corresponding to external envelope curve and the virtual value curve of the motor input current
Value can be understood as the undulate quantity of motor input current.Therefore, the present embodiment by virtual value curve corresponding to external envelope curve with
The virtual value curve of the motor input current is subtracted each other to obtain the undulate quantity curve of the motor input current.
The determination method of the undulate quantity curve for the motor input current that the present embodiment provides, by obtaining automobile drive motor
The real-time curve of corresponding motor input current during operating；The outsourcing of the motor input current is obtained according to the real-time curve
Network curve；The virtual value curve of corresponding motor input current when obtaining automobile drive motor operating；According to the outsourcing
The undulate quantity curve of motor input current described in network curve and the virtual value curve acquisition.Compared to the motor input current of routine
Analysis method, the fluctuation feelings of motor input current are assessed just with the real-time change curve and virtual value of motor input current
Condition, the present embodiment are inputted using the external envelope curve of motor input current and the virtual value curve assessment motor of motor input current
The fluctuation situation of electric current, the more accurate undulate quantity for assessing electric current can be realized.
Fig. 7 is the flow of the determination method of the undulate quantity curve for the motor input current that further embodiment of this invention provides
Figure.
As shown in fig. 7, the determination method of the undulate quantity curve for the motor input current that the present embodiment provides, including following step
Suddenly：
S201, the real-time curve for obtaining corresponding motor input current when automobile drive motor operates.
S202, the external envelope curve according to the real-time curve acquisition motor input current.
S203, the virtual value curve for obtaining corresponding motor input current when automobile drive motor operates.
S204, the undulate quantity of motor input current according to the external envelope curve and the virtual value curve acquisition are bent
Line.
The implementation of step S201, S202, S203, S204 in the present embodiment respectively with the step in above-described embodiment
S201, S202, S203, S204 implementation are identical, will not be repeated here.
S205, determine the section that undulate quantity is big in the undulate quantity curve.
S206, the period according to corresponding to the undulate quantity big section, determine corresponding to the big section of the undulate quantity
Operating mode.
For example, by observing the undulate quantity curve in Fig. 6 i.e. curve 5, it can be determined that go out the undulate quantity of curve 5 and compare
Big section, according to the period corresponding to the section, it is not difficult to determine operating mode corresponding to the section.For example, automobile low speed
Start or during the operating mode such as low speed braking motor input current undulate quantity it is bigger, correspondingly, the output torque of motor there is also
Obvious fluctuation, at this moment, in undulate quantity curve, obvious ripple also occurs in the corresponding section braked with low rate start or low speed
It is dynamic, therefore the fluctuation situation of each operating mode of vehicle can be known according to undulate quantity curve.
The determination method of the undulate quantity curve for the motor input current that the present embodiment provides, according to the fluctuation of undulate quantity curve
Situation can know the situation of each operating mode of vehicle, can easily identify and operating mode is corresponded to when current fluctuation is larger.
Fig. 8 is the structural representation of the determining device of the undulate quantity curve for the motor input current that one embodiment of the invention provides
Figure.
As shown in figure 8, the determining device of the undulate quantity curve for the motor input current that the present embodiment provides, including：
First acquisition module 11, for obtaining the real-time song of corresponding motor input current when automobile drive motor operates
Line；
Second acquisition module 12, for obtaining the external envelope curve of the motor input current according to the real-time curve；
3rd acquisition module 13, for obtain automobile drive motor operating when the corresponding motor input current it is effective
It is worth curve；
First determining module 14, for being obtained according to the virtual value curve of the external envelope curve and the motor input current
Take the undulate quantity curve of the motor input current.
Further, first determining module 14 is specifically used for：Obtain virtual value curve corresponding to external envelope curve；Will
The virtual value curve of virtual value curve corresponding to external envelope curve and the motor input current is subtracted each other to obtain the electricity
The undulate quantity curve of machine input current.
Further, described device also includes：
Second determining module, for inputting electricity according to the external envelope curve and the motor in first determining module
After the undulate quantity curve of motor input current described in the virtual value curve acquisition of stream, undulate quantity in the undulate quantity curve is determined
Big section；According to the period corresponding to the big section of the undulate quantity, operating mode corresponding to the big section of the undulate quantity is determined.
Further, second acquisition module 12 is specifically used for：To the real-time curve carry out Hilbert transform with
Obtain the external envelope curve of the motor input current.
Further, the 3rd acquisition module 13 is specifically used for：When automobile drive motor operating is extracted from CAN
The virtual value curve of corresponding motor input current.
On the device in the present embodiment, wherein modules perform the concrete mode of operation in relevant this method
It is described in detail in embodiment, explanation will be not set forth in detail herein.
The determining device of the undulate quantity curve for the motor input current that the present embodiment provides, by obtaining automobile drive motor
The real-time curve of corresponding motor input current during operating；The outsourcing of the motor input current is obtained according to the real-time curve
Network curve；The virtual value curve of corresponding motor input current when obtaining automobile drive motor operating；According to the outsourcing
The undulate quantity curve of motor input current described in network curve and the virtual value curve acquisition.Compared to the motor input current of routine
Analytical equipment, the fluctuation feelings of motor input current are assessed just with the real-time change curve and virtual value of motor input current
Condition, the present embodiment are inputted using the external envelope curve of motor input current and the virtual value curve assessment motor of motor input current
The fluctuation situation of electric current, the more accurate undulate quantity for assessing electric current can be realized.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the application.
Any process or method described otherwise above description in flow chart or herein is construed as, and represents to include
Module, fragment or the portion of the code of the executable instruction of one or more the step of being used to realize specific logical function or process
Point, and the scope of the preferred embodiment of the application includes other realization, wherein can not press shown or discuss suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be by the application
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each several part of the application can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction executing device with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method carries
Suddenly it is that by program the hardware of correlation can be instructed to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the application can be integrated in a first processing module,
Can be that unit is individually physically present, can also two or more units be integrated in a module.It is above-mentioned integrated
Module can both be realized in the form of hardware, can also be realized in the form of software function module.The integrated mould
If block is realized in the form of software function module and counted as independent production marketing or in use, one can also be stored in
In calculation machine read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although have been shown and retouch above
Embodiments herein is stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the application
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of application
Type.
Claims (10)
- A kind of 1. determination method of the undulate quantity curve of motor input current, it is characterised in that including：The real-time curve of corresponding motor input current when obtaining automobile drive motor operating；The external envelope curve of the motor input current is obtained according to the real-time curve；The virtual value curve of corresponding motor input current when obtaining automobile drive motor operating；According to the undulate quantity curve of motor input current described in the external envelope curve and the virtual value curve acquisition.
- 2. the method as described in claim 1, it is characterised in that described that electricity is inputted according to the external envelope curve and the motor The undulate quantity curve of motor input current described in the virtual value curve acquisition of stream, including：Obtain virtual value curve corresponding to external envelope curve；The virtual value curve of virtual value curve corresponding to external envelope curve and the motor input current is subtracted each other to obtain The undulate quantity curve of the motor input current.
- 3. the method as described in claim 1, it is characterised in that inputted described according to the external envelope curve and the motor After the undulate quantity curve of motor input current described in the virtual value curve acquisition of electric current, in addition to：Determine the section that undulate quantity is big in the undulate quantity curve；According to the period corresponding to the big section of the undulate quantity, operating mode corresponding to the big section of the undulate quantity is determined.
- 4. the method as described in claim 1, it is characterised in that described that the motor input electricity is obtained according to the real-time curve The external envelope curve of stream, including：Hilbert transform is carried out to the real-time curve to obtain the external envelope curve of the motor input current.
- 5. the method as described in any one of Claims 1-4, it is characterised in that it is described acquisition automobile drive motor operating when pair The virtual value curve for the motor input current answered includes：The virtual value curve of corresponding motor input current when automobile drive motor operating is extracted from CAN.
- A kind of 6. determining device of the undulate quantity curve of motor input current, it is characterised in that including：First acquisition module, for obtaining the real-time curve of corresponding motor input current when automobile drive motor operates；Second acquisition module, for obtaining the external envelope curve of the motor input current according to the real-time curve；3rd acquisition module, the virtual value for obtaining corresponding motor input current when automobile drive motor operates are bent Line；First determining module, for described in the virtual value curve acquisition according to the external envelope curve and the motor input current The undulate quantity curve of motor input current.
- 7. device as claimed in claim 6, it is characterised in that first determining module is specifically used for：It is bent to obtain external envelope Virtual value curve corresponding to line；By virtual value curve corresponding to external envelope curve and the virtual value curve of the motor input current Subtracted each other to obtain the undulate quantity curve of the motor input current.
- 8. device as claimed in claim 6, it is characterised in that also include：Second determining module, in first determining module according to the external envelope curve and the motor input current After the undulate quantity curve of motor input current described in virtual value curve acquisition, determine that undulate quantity in the undulate quantity curve is big Section；According to the period corresponding to the big section of the undulate quantity, operating mode corresponding to the big section of the undulate quantity is determined.
- 9. device as claimed in claim 6, it is characterised in that second acquisition module is specifically used for：To described bent in real time Line carries out Hilbert transform to obtain the external envelope curve of the motor input current.
- 10. the device as described in any one of claim 6 to 9, it is characterised in that the 3rd acquisition module is specifically used for：From The virtual value curve of corresponding motor input current when automobile drive motor operating is extracted in CAN.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111552378A (en) * | 2020-03-31 | 2020-08-18 | 瑞声科技(新加坡)有限公司 | Vibration signal generation method and device, terminal and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118869A (en) * | 2004-10-19 | 2006-05-11 | Nsk Ltd | Defect detector for rolling bearing, and defect detection method for the rolling bearing |
| CN102243143A (en) * | 2011-04-20 | 2011-11-16 | 上海斐赛轴承科技有限公司 | Bearing abnormal sound detection control method and bearing vibration measuring instrument |
| CN102713554A (en) * | 2010-01-04 | 2012-10-03 | Ntn株式会社 | Abnormality diagnosis device for rolling bearing, wind power generator, and abnormality diagnosis system |
| JP5282914B2 (en) * | 2010-06-14 | 2013-09-04 | 日本電気株式会社 | Radio identification device |
| CN103969526A (en) * | 2014-04-28 | 2014-08-06 | 深圳市双合电气股份有限公司 | Electric energy quality collecting device and application thereof in electric energy quality comprehensive analysis system |
| CN105372479A (en) * | 2015-11-11 | 2016-03-02 | 广东电网有限责任公司梅州供电局 | Voltage flicker measurement method for power quality measurement instrument |
| CN106019020A (en) * | 2016-06-30 | 2016-10-12 | 新疆特变电工自控设备有限公司 | Detection method for voltage fluctuation of electric energy quality |
| CN106771905A (en) * | 2016-12-02 | 2017-05-31 | 国网四川省电力公司电力科学研究院 | A kind of DISCHARGE PULSES EXTRACTION method suitable for high frequency electric Partial Discharge Detection |
| CN107238756A (en) * | 2017-06-14 | 2017-10-10 | 扬州万泰电子科技有限公司 | A kind of intelligent distribution transformer terminals impact load Identifying Methods of Harmonic Source |
-
2017
- 2017-10-26 CN CN201711021730.XA patent/CN107884712B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006118869A (en) * | 2004-10-19 | 2006-05-11 | Nsk Ltd | Defect detector for rolling bearing, and defect detection method for the rolling bearing |
| CN102713554A (en) * | 2010-01-04 | 2012-10-03 | Ntn株式会社 | Abnormality diagnosis device for rolling bearing, wind power generator, and abnormality diagnosis system |
| JP5282914B2 (en) * | 2010-06-14 | 2013-09-04 | 日本電気株式会社 | Radio identification device |
| CN102243143A (en) * | 2011-04-20 | 2011-11-16 | 上海斐赛轴承科技有限公司 | Bearing abnormal sound detection control method and bearing vibration measuring instrument |
| CN103969526A (en) * | 2014-04-28 | 2014-08-06 | 深圳市双合电气股份有限公司 | Electric energy quality collecting device and application thereof in electric energy quality comprehensive analysis system |
| CN105372479A (en) * | 2015-11-11 | 2016-03-02 | 广东电网有限责任公司梅州供电局 | Voltage flicker measurement method for power quality measurement instrument |
| CN106019020A (en) * | 2016-06-30 | 2016-10-12 | 新疆特变电工自控设备有限公司 | Detection method for voltage fluctuation of electric energy quality |
| CN106771905A (en) * | 2016-12-02 | 2017-05-31 | 国网四川省电力公司电力科学研究院 | A kind of DISCHARGE PULSES EXTRACTION method suitable for high frequency electric Partial Discharge Detection |
| CN107238756A (en) * | 2017-06-14 | 2017-10-10 | 扬州万泰电子科技有限公司 | A kind of intelligent distribution transformer terminals impact load Identifying Methods of Harmonic Source |
Non-Patent Citations (1)
| Title |
|---|
| 曹炜 等: "基于包络线和函数拟合的录波数据分析", 《上海电力学院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111552378A (en) * | 2020-03-31 | 2020-08-18 | 瑞声科技(新加坡)有限公司 | Vibration signal generation method and device, terminal and storage medium |
| CN111552378B (en) * | 2020-03-31 | 2023-11-10 | 瑞声科技(新加坡)有限公司 | Vibration signal generation method, device, terminal and storage medium |
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