CN1122184C - Method and device for measuring magnetic hysteresis loop - Google Patents
Method and device for measuring magnetic hysteresis loop Download PDFInfo
- Publication number
- CN1122184C CN1122184C CN 00112549 CN00112549A CN1122184C CN 1122184 C CN1122184 C CN 1122184C CN 00112549 CN00112549 CN 00112549 CN 00112549 A CN00112549 A CN 00112549A CN 1122184 C CN1122184 C CN 1122184C
- Authority
- CN
- China
- Prior art keywords
- input end
- magnetic hysteresis
- amplifier
- hysteresis loop
- storage oscilloscope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The present invention provides a method and a device for measuring magnetic hysteresis loop of ferrite. In the device, the output end of a signal amplifier is connected with the ground, and the other end is connected with the input end of a power amplifier; the output end of the power amplifier is connected with a primary coil of a sample ring, and the other end of the primary coil is connected with the ground through an adjustable resistor; both ends of a secondary coil of the sample ring is respectively connected with the positive-phase input end and the opposite-phase input end of an integrator; the output end of the integrator is connected with the 'Y' input end of a storage oscilloscope; the input end of an ammeter amplifier is positioned on a connection wire between the adjustable resistor and the ground; the output end of the ammeter amplifier is connected with the 'X' input end of the storage oscilloscope.
Description
One, technical field
The present invention is a kind of device of measuring the loss of ferrite magnetic hysteresis, belongs to that testing tool makes
Technical field.
Two, background technology
The large deflection angle of chromoscope, high resolving power development trend make that the sweep frequency of deflection coil is more and more higher.The raising of deflection frequency, what deflection system was brought is the heating and the increase of energy loss, the heating of deflection system is influence one of principal element of display tube performance, so how to reduce energy loss be the pith that deflection system designs.
The energy loss of deflection system is except the loss of deflection coil, and the loss of magnetic core is also very big.Therefore energy loss in deflecting core mainly is ferritic magnetic hysteresis loss, and how to reduce energy loss very meaningful to analyzing to measure and analyze ferritic magnetic hysteresis loss characteristic.
Can want the magnetic hysteresis loss of analysis of material by the measuring of magnetic hysteresis loop for the analysis of magnetic hysteresis loss, will at first measure the area of the magnetic hysteresis loop of material, and then can calculate the total magnetic hysteresis loss in the material.
The measurement of magnetic hysteresis loop has many specialized apparatus to select for use, measures as the SY-8216B-H analyser of Japanese IWATSLI.But these special-purpose analyser prices are very expensive, general just can be disposed in specialized factory and laboratory, simultaneously the output result of these instruments generally comprises magnetic hysteresis loop and the gross energy loss that measures etc., but this energy loss not only comprises magnetic hysteresis loss, also comprise the copper loss of measuring coil, eddy current loss etc., therefore for the analysis of magnetic hysteresis loop, measure the area of the magnetic hysteresis loop of its output, these equipment are not very convenient just.
Three, technology contents 1, technical matters
Purpose of the present invention just provides a kind of proving installation that can measure magnetic hysteresis loop and area and cost magnetic hysteresis loop low, simple in structure easily.2, technical scheme
Magnetic hysteresis loop of the present invention is surveyed device and is made up of institutes such as signal generator, power amplifier, reometer amplifiers, the output terminal one end ground connection of signal amplifier in this device, the input end of another termination power amplifier, primary coil on the output termination sample loop of power amplifier, the other end of primary coil is by adjustable resistance (RW) ground connection; The two ends of the secondary coil of sample loop connect the normal phase input end and the inverting input of integrator respectively, " Y " input end of the output termination storage oscilloscope of integrator, the reometer amplifier input terminal is positioned on the line between adjustable resistance (RW) and the ground, " X " input end of the output termination storage oscilloscope of reometer amplifier.
To be sine wave signal that signal generator is produced amplify the primary coil of rear drive on the standard model ring through power amplifier to hysteresis measurement method of the present invention, and the voltage signal after the size of drive current is detected by the reometer amplifier send " X " input end of storage oscilloscope; Induced signal on secondary coil send " Y " input end of storage oscilloscope through integrator, in corresponding respectively magnetic field intensity H and the magnetic induction density B that obtains the magnetic hysteresis loop that will measure of " X, the Y " of storage oscilloscope input end.Adopt the method for statistical average, a plurality of periodic signals on the storage oscilloscope are averaged obtains magnetic hysteresis loop and output, is gone out the area of magnetic hysteresis loop by COMPUTER CALCULATION.
The connected mode of each several part is around the primary coil of last N1 circle and the secondary induction coil of N2 circle on the sample loop that will will measure.The input end of the output termination power amplifier of signal generator, end with the output termination primary coil of power amplifier, another termination one variable resistor of primary coil is used to adjust the electric current by primary coil, and the variable-resistance other end and signal generator form primary coil loops.The probe pincers of reometer amplifier make the current lead by primary coil pass through probe to measure the electric current in the primary coil loops, and the directions X signal end of the output terminal of reometer amplifier and storage oscilloscope correspondence is connected.One end of the secondary coil on the sample loop and the input end of integrating circuit link to each other, and the voltage signal of its induction outputs to Y direction signal end corresponding on the storage oscilloscope behind the integrator integration; The other end of secondary induction coil and system link to each other publicly.Data output on the storage oscilloscope or floppy drive can be exported the signal data of X and Y direction to data file.This data file can be read by certain form by the software of writing in computing machine.3, technique effect
The invention has the advantages that and adopt measurement mechanism of the present invention and measuring method can measure magnetic hysteresis loop and area easily, wherein Zhuan Zhi cost is low, simple in structure.General measuring technique adopts the method that improves circuit performance to reduce the noise of system, integrating circuit is to operational amplifier simultaneously, the requirement of capacitance-resistance performance index is also very high, owing to will under the different operating condition, use, the adjustment of system requires also very high, simultaneously to the general method that magnetic hysteresis loop is drawn squares and amplified that adopts of calculating of the area of the magnetic hysteresis loop that obtains, calculate the area of magnetic hysteresis loop by the number of the included grid of number magnetic hysteresis loop, because magnetic hysteresis loop is irregular shape, therefore, this workload of area that will obtain magnetic hysteresis loop is very big.Adopted after the improved system, on the basis of the memory function of storage oscilloscope and numerical evaluation, the average method of applied statistics has reduced the noise of measuring, the reliability of system is improved, the numerical integration of application software replaces the hardware integrating circuit, reduces even has saved requirement to integrating circuit, and the cost of high performance system is reduced greatly, and can application software calculate the area of magnetic hysteresis loop easily, make the analysis of magnetic hysteresis loss very convenient.
Four, description of drawings
Fig. 1 is the general structure synoptic diagram of proving installation of the present invention.Signal generator 1, power amplifier 2, reometer amplifier 3, sample loop 4, integrator 5, storage oscilloscope 6, sample loop primary coil N1, secondary coil N2 are wherein arranged.
Fig. 2 is a kind of concrete test circuit structure synoptic diagram of proving installation of the present invention.
Five, embodiment
Embodiment of the present invention are as follows:
Fig. 2 is the electrical schematic diagram of the proving installation implemented.Wherein the reometer amplifier is the AM503B reometer amplifier of Tyke (Tektronix) company, and storage oscilloscope is the TDS3014 product of Tyke (Tektronix), and used power amplifier is the sound equipment power amplifier.Use the prime amplifier and the integrator of OP27 operational amplifier, resistance, electric capacity and power supply composition and form integrating circuit jointly, prime amplifier can be adjusted the input signal size of integrator, makes integrator be operated in normal working range.Power amplifier and integrating circuit can change according to the needs of survey frequency.
The effect and the structure of each several part are as follows in this device:
Signal generator 1: be used to produce various frequency sine wave signals, as Topward 8112 signal generators.
Power amplifier 2: the signal of the generation of signal generator is amplified, be used to drive primary coil, make in the sample loop that needs are measured and reach certain magnetic field intensity, high-speed power amplifier (HIGH SPEEDPOWER AMPLIFER) as NF ELEC-TRONIC INSTRUMENT company can be applied to high frequency and big current drives situation, and common sound equipment power amplifier can be applied to the frequency range of 50Hz-20KHz.
Integrator 5: the induced voltage signal of integration in secondary coil can obtain corresponding magnetic flux density in the sample loop according to the physical relation of this integral voltage and magnetic flux density, as the integrator of forming with OP27 operational amplifier, resistance, electric capacity and power supply.
Reometer amplifier 3: be used for detection of primary coil stimulating electric current, obtain magnetic field intensity in the sample loop according to the physical relation of exciting current and magnetic field intensity, and transfer current signal to voltage signal and on oscillograph, show, as the AM503B reometer amplifier of Tektronix.
Storage oscilloscope 6: be used to show storage voltage, current signal waveform, magnetic hysteresis loop etc., requirement has two-way X-Y graphical display function, signal storage function and output function at least, the acquired signal function etc. of averaging is preferably arranged, as the TDS3014 oscillograph of Tektronix.
Standard model ring 4: the internal diameter that Ferrite Material is made is D1, external diameter is D2, thickness is the column ring of L, the signal of reometer output and the signal of integrator output are added in the X of storage oscilloscope and the input end of Y respectively, just can on oscillograph, obtain the relation of B-H, can obtain magnetic hysteresis loop.
Processing and application software to the resulting magnetic hysteresis loop in front in device of the present invention are carried out numerical integration replacement integrator.
1) the average method of applied statistics is handled the magnetic hysteresis loop that obtains previously, reduces The noise, obtains thinner magnetic hysteresis loop.Here the method that can adopt has: if be used to show that the oscillograph of magnetic hysteresis loop has the sample mean function, then can directly use this function averages the signal in a plurality of cycles and reduces noise, it is more than 2 that average signal period number is asked in application, can reach 256 even higher according to oscillographic difference, periodicity will make response speed slack-off too much, generally adopt 32 better.If oscillograph does not have this function, can the oscillographic memory function of application memory be preserved by data, by Computer Processing.
2) application software is calculated the area of magnetic hysteresis loop.Storage oscilloscope can be preserved the electric current of X and Y and magnitude of voltage to file, write software and from the file of storage, read the numerical value of X and Y, because storage oscilloscope generally can be stored the above data of 10,000 points, therefore take out the signal of one-period from the data of storage, the method for using numerical evaluation is directly calculated the area of magnetic hysteresis loop.Can magnetic hysteresis loop be drawn in the computing machine application software more simultaneously.If the function that the storage oscilloscope that is adopted is not averaged can be got the signal of storage earlier and be expected in a plurality of weeks after the average reducing noise, calculate the area of the magnetic hysteresis loop of one-period again.
3) the application software numerical integration replaces the hardware integrator.The hardware integrator has certain requirement to the scope of using, therefore requirement will be adjusted the circuit of integrator at different frequencies of utilization and working range, frequency response to integrator has also proposed very high requirement when high frequency uses simultaneously, this has increased the difficulty and the cost of circuit design undoubtedly, the application software numerical integration replaces the hardware integrator, induced voltage signal in the secondary coil directly is saved in file, application software is read, is handled, and adopts numerical integral method to address this problem easily.
Claims (3)
1. the measurement mechanism of a magnetic hysteresis loop, formed by signal generator, power amplifier, reometer amplifier, the output terminal one end ground connection that it is characterized in that signal amplifier in this device (1), the input end of another termination power amplifier (2), primary coil (N1) on the output termination sample loop (4) of power amplifier (2), the other end of primary coil (N1) is by adjustable resistance (RW) ground connection; The two ends of the secondary coil (N2) of sample loop (4) connect the normal phase input end and the inverting input of integrator (5) respectively, " Y " input end of the output termination storage oscilloscope (6) of integrator (5), the input end of reometer amplifier (3) is positioned on the line between adjustable resistance (RW) and the ground, " X " input end of the output termination storage oscilloscope (6) of reometer amplifier (3).
2. measuring method that satisfies the magnetic hysteresis loop of claim 1, it is characterized in that this method is sine wave signal that signal generator (1) is produced and amplifies the primary coil of rear drive on the standard model ring through power amplifier, the voltage signal after the size of drive current is detected by the reometer amplifier send " X " input end of storage oscilloscope (6); Induced signal on secondary coil send " Y " input end of storage oscilloscope (6) through integrator (5), in corresponding respectively magnetic field intensity H and the magnetic induction density B that obtains the magnetic hysteresis loop that will measure of " X, the Y " of storage oscilloscope input end.
3. the measuring method of magnetic hysteresis loop according to claim 2 is characterized in that adopting the method for statistical average, and a plurality of periodic signals on the storage oscilloscope (6) are averaged obtains magnetic hysteresis loop and output, is gone out the area of magnetic hysteresis loop by COMPUTER CALCULATION.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112549 CN1122184C (en) | 2000-09-18 | 2000-09-18 | Method and device for measuring magnetic hysteresis loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112549 CN1122184C (en) | 2000-09-18 | 2000-09-18 | Method and device for measuring magnetic hysteresis loop |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1283797A CN1283797A (en) | 2001-02-14 |
| CN1122184C true CN1122184C (en) | 2003-09-24 |
Family
ID=4582402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00112549 Expired - Fee Related CN1122184C (en) | 2000-09-18 | 2000-09-18 | Method and device for measuring magnetic hysteresis loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1122184C (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721939B (en) * | 2012-06-26 | 2015-05-20 | 南京航空航天大学 | Measuring device for hysteresis loop made of ferromagnetic material and application method of measuring device |
| CN102749595B (en) * | 2012-07-09 | 2014-11-26 | 云南电力试验研究院（集团）有限公司电力研究院 | Method for measuring residual magnetic induction density of iron core of transformer |
| CN102879751B (en) * | 2012-10-09 | 2015-12-09 | 南京大学 | Based on the hysteresis measurement method and apparatus of digital integration |
| CN103116145B (en) * | 2013-01-23 | 2015-03-11 | 中北大学 | Experimental method of using digital storage oscilloscope to observe alternating current magnetic hysteresis loop |
| CN103176148B (en) * | 2013-03-13 | 2014-07-02 | 江苏省电力公司电力科学研究院 | Testing device and testing method for silicon steel core limit hysteresis loop |
| CN103901368A (en) * | 2014-04-24 | 2014-07-02 | 江苏理工学院 | Magnetic parameter measuring device for magnetic materials |
| CN103941201A (en) * | 2014-04-24 | 2014-07-23 | 江苏理工学院 | Measuring method of magnetic parameters of magnetic material |
| CN105119587B (en) * | 2015-08-28 | 2017-09-15 | 南京邮电大学 | A kind of magnetic loss automatically testing platform and its sinusoidal excitation signal source used |
| CN107219477A (en) * | 2017-06-21 | 2017-09-29 | 曹可星 | A kind of method of testing of DC electromagnet response time |
| CN108828476A (en) * | 2018-06-27 | 2018-11-16 | 重庆湃芯入微科技有限公司 | A kind of application of high frequency limiting circuit in hardware system |
| CN109444778A (en) * | 2018-11-29 | 2019-03-08 | 阜阳师范学院 | A kind of soft magnetic materials AC earth Auto-Test System |
| CN109444777A (en) * | 2018-11-29 | 2019-03-08 | 阜阳师范学院 | A kind of circuit system of soft magnetic materials AC earth automatically testing platform |
| CN110133549A (en) * | 2019-06-06 | 2019-08-16 | 南京邮电大学 | A kind of magnetic loss measuring table of integrated universal equipment |
| CN110133548A (en) * | 2019-06-06 | 2019-08-16 | 南京邮电大学 | A kind of two close cycles magnetic loss measuring system |
| CN111044956B (en) * | 2019-11-28 | 2021-05-11 | 浙江大学 | Hysteresis loss estimation method |
| CN111157928A (en) * | 2020-01-07 | 2020-05-15 | 吉林大学 | Material magnetic on-line rapid detection system and detection method thereof |
| CN113436856B (en) * | 2021-06-11 | 2022-10-11 | 优利德科技(中国)股份有限公司 | Hollow coil sensing complementary device, pincerlike multimeter and preparation method thereof |
| CN113640719B (en) * | 2021-10-19 | 2022-01-07 | 北京智芯仿真科技有限公司 | Method and device for determining magnetic core loss of inductive element of integrated circuit power supply system |
-
2000
- 2000-09-18 CN CN 00112549 patent/CN1122184C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1283797A (en) | 2001-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1122184C (en) | Method and device for measuring magnetic hysteresis loop | |
| CN105307099B (en) | A kind of test method of Loudspeaker Power Test System and power and low-frequency parameter | |
| CN1157103C (en) | Composite probe for plasma diagnosis | |
| CN105372483B (en) | A kind of radio-frequency voltage current sensing means | |
| CN201654130U (en) | Automatic measuring and calibrating device of high-impedance measuring apparatus | |
| CN110806529A (en) | Capacitive type equipment insulation performance on-line monitoring system | |
| CN101008580A (en) | Resistance type wave height gauge | |
| CN113721071A (en) | System and method for measuring non-intrusive voltage to ground | |
| CN1212524C (en) | Soft magnetic material characteristic measuring devices | |
| CN212410750U (en) | Data acquisition device suitable for single-phase earth fault line selection | |
| CN2864702Y (en) | Electric field property testing device for electric precipitator | |
| US20050021255A1 (en) | Measurement of inductance using a digital storage oscilloscope under real-time operating environments | |
| CN2434677Y (en) | Metal magnetic memory diagnosis instrument | |
| CN105203975B (en) | A kind of pulse doublet magnetic axis measuring method | |
| CN2457615Y (en) | Complex data detector of three shaft magnetic sensor | |
| CN1112677A (en) | High precision instrument for testing water content of crude oil by impedance method | |
| CN102495382A (en) | Transient magnetic field recorder | |
| JP3787840B2 (en) | Waveform analyzer | |
| CN113156349A (en) | Method and device for measuring magneto-mechanical properties of material | |
| CN202486328U (en) | Space vector method underground metal pipeline position detecting device | |
| CN216449640U (en) | Cross four-wire system of voltage wire | |
| CN1177332C (en) | Antijamming signal transferring cable and high-speed high-amplitude pulse current sensor | |
| CN2821570Y (en) | Electromechanical integrated detector for digital weak electrolyte dissociation constant | |
| CN1125841A (en) | Test method for hologram dynamic characteristics of magnetic induction sensor | |
| CN1635384A (en) | Test circuit and test method for earth resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |