TWI499776B - Method for measuring deterioration of an electromagnetic steel sheet and measure machine using the same - Google Patents

Method for measuring deterioration of an electromagnetic steel sheet and measure machine using the same Download PDF

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TWI499776B
TWI499776B TW103118127A TW103118127A TWI499776B TW I499776 B TWI499776 B TW I499776B TW 103118127 A TW103118127 A TW 103118127A TW 103118127 A TW103118127 A TW 103118127A TW I499776 B TWI499776 B TW I499776B
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steel sheet
electromagnetic steel
measuring
probe
signal
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TW103118127A
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TW201544812A (en
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Shihkang Kuo
Wenchieh Li
Shengyang Lin
Chenyuan Lu
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China Steel Corp
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Description

電磁鋼片劣化量測方法與其量測機台Electromagnetic steel sheet degradation measuring method and measuring machine

本發明是有關於一種電磁鋼片劣化量測方法與其量測機台，特別是有關於一種運用探針來量測電磁鋼片之電磁鋼片劣化量測方法與其量測機台。The invention relates to an electromagnetic steel sheet degradation measuring method and a measuring machine thereof, in particular to a measuring method for measuring electromagnetic steel sheet deterioration using a probe to measure electromagnetic steel sheets and a measuring machine thereof.

電磁鋼片在製作成電動機械的過程中，必須經過切割或沖壓製程，將電磁鋼片製成鐵芯的形狀，才能將磁通依設計者的構思引導至所規劃的路徑。然而，加工成形的過程必然會引入殘留的應力至電磁鋼片，進而造成電磁鋼片電磁特性的損失。以沖壓製程為例，電磁鋼片中接近切斷面的部份會因為承受不均勻的塑性變形，而沿著剖面從上至下分為三個區域，其分別為彎曲(rollover)區域、剪切區域(shear)區域以及破裂(fracture)區域。此種不均勻的變形導致切斷面周圍具有相當大的殘留應力。In the process of making an electromechanical steel sheet, the electromagnetic steel sheet must be cut or stamped to form the shape of the core of the electromagnetic steel sheet, so that the magnetic flux can be guided to the planned path according to the designer's concept. However, the process of forming and forming inevitably introduces residual stress to the electromagnetic steel sheet, which in turn causes loss of electromagnetic characteristics of the electromagnetic steel sheet. Taking the stamping process as an example, the portion of the electromagnetic steel sheet that is close to the cut surface is divided into three regions along the section from top to bottom due to uneven plastic deformation, which are respectively rollover regions, shears. The shear zone and the fracture zone. This uneven deformation results in considerable residual stress around the cut surface.

應力對於鐵磁性材料的影響相當靈敏，僅僅只有20Mpa(百萬帕)即可造成導磁率大約50%的變化。為了了解應力對於鐵磁性材料的影響，傳統上係利用愛普斯坦測定器(Epstein tester)或單板磁測定器(single sheet tester)來量 測電磁鋼片的特性，但這些測定器仍不足以了解局部的磁性變化。The effect of stress on ferromagnetic materials is quite sensitive, and only 20 MPa (megapascals) can cause a magnetic permeability change of about 50%. In order to understand the effect of stress on ferromagnetic materials, it has traditionally been measured using an Epstein tester or a single sheet tester. The characteristics of electromagnetic steel sheets are measured, but these analyzers are still insufficient to understand local magnetic changes.

因此，需要一種新的電磁鋼片劣化量測方法與其量測機台來測定電磁鋼片的加工劣化情況。Therefore, there is a need for a new electromagnetic steel sheet degradation measuring method and its measuring machine to determine the processing deterioration of the electromagnetic steel sheet.

本發明之一方面是在提供一種電磁鋼片劣化量測方法與其量測機台，其係利用三根探針(needle probe)來測定電磁鋼片的加工劣化情況。One aspect of the present invention provides an electromagnetic steel sheet deterioration measuring method and a measuring machine thereof, which use three needle probes to measure the processing deterioration of the electromagnetic steel sheet.

根據本發明之一實施例，此電磁鋼片劣化量測機台包含激磁裝置、鋼片固定座、第一探針、第二探針、第三探針以及處理模組。激磁裝置係用以激發磁場。鋼片固定座係用以固定電磁鋼片，並使電磁鋼片位於磁場中。第一探針係設置於該電磁鋼片之第一量測點上，以獲得第一量測訊號。第二探針係設置於電磁鋼片之第二量測點上，以獲得第二量測訊號。第三探針係設置於電磁鋼片之第三量測點上，以獲得第三量測訊號。處理模組係電性連接至第一探針、第二探針以及第三探針，以計算出第二量測訊號與第一量測訊號之第一差值訊號以及計算出第三量測訊號與第一量測訊號之第二差值訊號。According to an embodiment of the invention, the electromagnetic steel sheet deterioration measuring machine comprises an excitation device, a steel plate holder, a first probe, a second probe, a third probe, and a processing module. The excitation device is used to excite the magnetic field. The steel plate fixing seat is used to fix the electromagnetic steel sheet and place the electromagnetic steel sheet in a magnetic field. The first probe is disposed on the first measuring point of the electromagnetic steel sheet to obtain a first measurement signal. The second probe is disposed on the second measuring point of the electromagnetic steel sheet to obtain the second measuring signal. The third probe is disposed on the third measuring point of the electromagnetic steel sheet to obtain a third measuring signal. The processing module is electrically connected to the first probe, the second probe, and the third probe to calculate a first difference signal between the second measurement signal and the first measurement signal, and calculate a third measurement The second difference signal between the signal and the first measurement signal.

在此電磁鋼片劣化量測方法中，首先利用一激磁裝置來激發磁場。接著，將電磁鋼片設置於磁場中。然後，將第一探針設置於電磁鋼片之第一量測點上，以獲得第一量測訊號。接著，將第二探針設置於電磁鋼片之第二量測點上，以獲得第二量測訊號。然後。將第三探針設置於電 磁鋼片之第三量測點上，以獲得第三量測訊號。接著，計算出第二量測訊號與第一量測訊號之第一差值訊號。然後，計算出第三量測訊號與第一量測訊號之第二差值訊號。接著，根據第一差值訊號和第二差值訊號來判斷電磁鋼片之加工劣化情況。In the electromagnetic steel sheet deterioration measuring method, first, an exciting device is used to excite the magnetic field. Next, the electromagnetic steel sheet is placed in a magnetic field. Then, the first probe is placed on the first measuring point of the electromagnetic steel sheet to obtain the first measuring signal. Next, the second probe is placed on the second measuring point of the electromagnetic steel sheet to obtain a second measuring signal. then. Set the third probe to electricity The third measuring point of the magnetic steel sheet is used to obtain a third measuring signal. Then, the first difference signal of the second measurement signal and the first measurement signal is calculated. Then, a second difference signal between the third measurement signal and the first measurement signal is calculated. Then, the processing deterioration of the electromagnetic steel sheet is judged according to the first difference signal and the second difference signal.

由上述說明可知，本發明實施例之電磁鋼片劣化量 測方法與其量測機台係利用三根探針(needle probe)來獲得電磁鋼片內各區域的磁通狀況，並對其進行比較，以測定電磁鋼片的加工劣化情況。本發明實施例之電磁鋼片劣化量測方法與其量測機台具有構造簡單、容易實施、非破壞性試驗等優點，故適用於量測各種電磁鋼片之加工劣化情況。It can be seen from the above description that the electromagnetic steel sheet deterioration amount of the embodiment of the present invention The measuring method and the measuring machine system use three needle probes to obtain the magnetic flux conditions of various regions in the electromagnetic steel sheet, and compare them to determine the processing deterioration of the electromagnetic steel sheet. The method for measuring the deterioration of the electromagnetic steel sheet and the measuring machine of the embodiment of the invention have the advantages of simple structure, easy implementation, non-destructive testing, and the like, and are therefore suitable for measuring the processing deterioration of various electromagnetic steel sheets.

100‧‧‧鋼片劣化量測機台100‧‧‧Steel sheet deterioration measuring machine

110‧‧‧激磁裝置110‧‧‧Magnetic device

120‧‧‧鋼片固定座120‧‧‧Steel plate holder

130‧‧‧處理模組130‧‧‧Processing module

132a、132b‧‧‧比較電路132a, 132b‧‧‧ comparison circuit

134a、134b‧‧‧積分電路134a, 134b‧‧‧ integration circuit

136a、136b‧‧‧濾波器136a, 136b‧‧‧ filter

400‧‧‧電磁鋼片劣化量測方法400‧‧‧Electromagnetic steel sheet degradation measurement method

410-430‧‧‧步驟410-430‧‧‧Steps

N1‧‧‧第一探針N1‧‧‧ first probe

N2‧‧‧第二探針N2‧‧‧ second probe

N3‧‧‧第三探針N3‧‧‧ third probe

W‧‧‧電磁鋼片W‧‧‧Electromagnetic steel sheet

WPS1‧‧‧第一加工面WPS1‧‧‧ first processing surface

WPS2‧‧‧第二加工面WPS2‧‧‧second processing surface

WS1‧‧‧第一表面WS1‧‧‧ first surface

WS2‧‧‧第二表面WS2‧‧‧ second surface

P1-P4‧‧‧測量點P1-P4‧‧‧ measuring points

CL‧‧‧中心線CL‧‧‧ center line

A1-A4‧‧‧區域A1-A4‧‧‧Area

為讓本發明之上述和其他目的、特徵、和優點能更明顯易懂，上文特舉數個較佳實施例，並配合所附圖式，作詳細說明如下：第1圖係繪示根據本發明實施例之電磁鋼片劣化量測機台的結構示意圖。The above and other objects, features, and advantages of the present invention will become more apparent and understood. A schematic structural view of an electromagnetic steel sheet deterioration measuring machine according to an embodiment of the present invention.

第2a圖和第2b圖係繪示根據本發明實施例之電磁鋼片的剖面結構示意圖。2a and 2b are schematic cross-sectional views showing an electromagnetic steel sheet according to an embodiment of the present invention.

第3圖係繪示根據本發明實施例之處理模組的電路結構示意圖。FIG. 3 is a schematic diagram showing the circuit structure of a processing module according to an embodiment of the invention.

第4圖係繪示根據本發明實施例之電磁鋼片劣化量測方法的流程示意圖。FIG. 4 is a schematic flow chart showing a method for measuring the deterioration of an electromagnetic steel sheet according to an embodiment of the present invention.

請參照第1圖，其係繪示根據本發明實施例之電磁鋼片劣化量測機台100的結構示意圖。量測機台100包含激磁裝置110、鋼片固定座120、第一探針N1、第二探針N2、第三探針N3以及處理模組(未繪示)。激磁裝置110係用以激發磁場，以使電磁鋼片W感應出反電動勢。在本實施例中，激磁裝置110為激磁鐵芯，其上環繞有線圈，以使激磁鐵芯提供交流磁場。鋼片固定座120係用以固定電磁鋼片W，以使電磁鋼片W位於激磁裝置110所提供之磁場中。第一探針N1、第二探針N2、第三探針N3係分別設置於電磁鋼片W之複數個量測點上，以獲得複數個量測訊號。處理模組係電性連接至第一探針N1、第二探針N2、第三探針N3，以處理所測得之量測訊號。另外，為了避免耦合到空氣，第一探針N1、第二探針N2、第三探針N3的電路接線係沿著電磁鋼片W和機台部件的表面分佈，以縮小第一探針N1、第二探針N2、第三探針N3的量測迴路。另外，雖然本實施例之探針係固設於量測機台100上，但本發明之實施例並不受限於此。在本發明之其他實施例中，探針可不需固設於量測機台100上，以方便使用者以手持方式或是利用其他輔具來移動探針至量測點上。Please refer to FIG. 1 , which is a schematic structural view of an electromagnetic steel sheet deterioration measuring machine 100 according to an embodiment of the present invention. The measuring machine 100 includes an excitation device 110, a steel plate holder 120, a first probe N1, a second probe N2, a third probe N3, and a processing module (not shown). The excitation device 110 is used to excite a magnetic field to induce the electromagnetic sheet W to induce a counter electromotive force. In the present embodiment, the excitation device 110 is a exciting magnetic core surrounded by a coil to provide an alternating magnetic field to the exciting core. The steel plate mount 120 is used to fix the electromagnetic steel sheet W such that the electromagnetic steel sheet W is located in the magnetic field provided by the excitation device 110. The first probe N1, the second probe N2, and the third probe N3 are respectively disposed on a plurality of measurement points of the electromagnetic steel sheet W to obtain a plurality of measurement signals. The processing module is electrically connected to the first probe N1, the second probe N2, and the third probe N3 to process the measured measurement signal. In addition, in order to avoid coupling to the air, the circuit connections of the first probe N1, the second probe N2, and the third probe N3 are distributed along the surface of the electromagnetic steel sheet W and the machine part to reduce the first probe N1. a measuring circuit of the second probe N2 and the third probe N3. In addition, although the probe of the present embodiment is fixed to the measuring machine 100, the embodiment of the present invention is not limited thereto. In other embodiments of the present invention, the probe may not need to be fixed on the measuring machine 100, so that the user can move the probe to the measuring point in a hand-held manner or by using other auxiliary tools.

請參照第2a圖和第2b圖，其係繪示根據本發明實施例之電磁鋼片W的剖面結構示意圖。本實施例之電磁鋼片W具有第一加工面WPS1、第二加工面WPS2、第一表面WS1以及第二表面WS2，其中第一加工面WPS1和第二加 工面WPS2係經過加工，例如切割或沖壓製程而產生，故其具有殘留應力。Please refer to FIGS. 2a and 2b, which are schematic cross-sectional views of an electromagnetic steel sheet W according to an embodiment of the present invention. The electromagnetic steel sheet W of the embodiment has a first processing surface WPS1, a second processing surface WPS2, a first surface WS1, and a second surface WS2, wherein the first processing surface WPS1 and the second processing The work surface WPS2 is produced by processing, such as a cutting or stamping process, so it has residual stress.

在本實施例中，量測機台100可利用探針N1-N3來對電磁鋼片W之四個測量點P1-P4進行量測，以獲得電磁鋼片W內各區域A1-A4的磁通量。測量點P1係位於第二表面WS2上，且測量點P1與較近之第一加工面WPS1間之距離大於電磁鋼片W厚度值的一倍。測量點P2亦位於第二表面WS2上，且測量點P2與較近之第二加工面WPS2間之距離大於電磁鋼片W厚度值的一倍。如此，測量點P1和測量點P2對稱於第一加工面WPS1和第二加工面WPS2間之中心線CL。測量點P3係位於第一表面WS1上，且測量點P3與較近之第一加工面WPS1間之距離大於電磁鋼片W厚度值的一倍。測量點P4亦位於第一表面WS1上，且測量點P4與較近之第二加工面WPS2間之距離大於電磁鋼片W厚度值的一倍。如此，測量點P3和測量點P4亦對稱中心線CL。在本實施例中，測量點P1-P4係互相對稱，但本發明之實施例並不受限於此。In the present embodiment, the measuring machine 100 can measure the four measuring points P1-P4 of the electromagnetic steel sheet W by using the probes N1-N3 to obtain the magnetic fluxes of the respective areas A1-A4 in the electromagnetic steel sheet W. . The measuring point P1 is located on the second surface WS2, and the distance between the measuring point P1 and the closer first processing surface WPS1 is greater than one times the thickness value of the electromagnetic steel sheet W. The measuring point P2 is also located on the second surface WS2, and the distance between the measuring point P2 and the closer second processing surface WPS2 is greater than twice the thickness of the electromagnetic steel sheet W. Thus, the measurement point P1 and the measurement point P2 are symmetric with respect to the center line CL between the first processing surface WPS1 and the second processing surface WPS2. The measuring point P3 is located on the first surface WS1, and the distance between the measuring point P3 and the closer first processing surface WPS1 is greater than one times the thickness of the electromagnetic steel sheet W. The measuring point P4 is also located on the first surface WS1, and the distance between the measuring point P4 and the closer second processing surface WPS2 is greater than twice the thickness of the electromagnetic steel sheet W. Thus, the measurement point P3 and the measurement point P4 are also symmetric center line CL. In the present embodiment, the measurement points P1 - P4 are symmetrical to each other, but the embodiment of the present invention is not limited thereto.

處理模組係用以接收第一探針N1、第二探針N2、第三探針N3所分別測得之第一量測訊號、第二量測訊號和第三量測訊號。在本實施例中，處理模組係以第一探針N1所測得之第一量測訊號作為基準，並計算第二量測訊號與第一量測訊號之差值訊號，以及第三量測訊號與第一量測訊號之差值訊號。其中，第二量測訊號為二探針N2所測得之訊號，第三量測訊號為第三探針N3所測得之訊號。The processing module is configured to receive the first measurement signal, the second measurement signal, and the third measurement signal respectively measured by the first probe N1, the second probe N2, and the third probe N3. In this embodiment, the processing module uses the first measurement signal measured by the first probe N1 as a reference, and calculates a difference signal between the second measurement signal and the first measurement signal, and the third quantity. The difference between the test signal and the first measurement signal. The second measurement signal is a signal measured by the second probe N2, and the third measurement signal is a signal measured by the third probe N3.

請參照第3圖，其係繪示根據本發明實施例之處理模組130的電路結構示意圖。本實施例之處理模組130包含比較電路132a、132b、積分電路134a、134b以及濾波器136a和136b。比較電路132a之兩輸入端係分別電性連接至第一探針N1和第二探針N2，以計算第一量測訊號與第二量測訊號間之差值，並輸出差值訊號。積分電路134a係電性連接至比較電路132a之輸出端，以對差值訊號進行積分而輸出磁通訊號。類似地，比較電路132b之兩輸入端係分別電性連接至第三探針N3和第二探針N2，以計算第三量測訊號與第二量測訊號間之差值，並輸出差值訊號。積分電路134b係電性連接至比較電路132b之輸出端，以對差值訊號進行積分而輸出磁通訊號。Please refer to FIG. 3 , which is a schematic diagram showing the circuit structure of the processing module 130 according to an embodiment of the invention. The processing module 130 of this embodiment includes comparison circuits 132a, 132b, integration circuits 134a, 134b, and filters 136a and 136b. The two input ends of the comparison circuit 132a are electrically connected to the first probe N1 and the second probe N2, respectively, to calculate a difference between the first measurement signal and the second measurement signal, and output a difference signal. The integrating circuit 134a is electrically connected to the output end of the comparing circuit 132a to integrate the difference signal to output a magnetic communication number. Similarly, the two input terminals of the comparison circuit 132b are electrically connected to the third probe N3 and the second probe N2, respectively, to calculate a difference between the third measurement signal and the second measurement signal, and output a difference. Signal. The integrating circuit 134b is electrically connected to the output end of the comparing circuit 132b to integrate the difference signal to output a magnetic communication number.

在本實施例中，比較電路132a和132b會對差值訊號進行放大，如此將會使比較電路132a和132b所輸出之差值訊號產生微小的偏移量(offset)。若此偏移量經過積分，很容易會變成不易被歸零的偏移量。故，本實施例設置了濾波器136a和136b於比較電路與積分電路之間，以將微小的偏移量擷取出來，再饋入積分電路進行偏移量的消除。在本發明之其他實施例中，亦可使用數據擷取卡(A/D card)來進行即時(real time)計算，以取代上述之積分電路134a、134b。In the present embodiment, the comparison circuits 132a and 132b amplify the difference signals, which will cause the difference signals output by the comparison circuits 132a and 132b to generate a slight offset. If this offset is integrated, it will easily become an offset that is not easily zeroed. Therefore, in this embodiment, the filters 136a and 136b are disposed between the comparison circuit and the integration circuit to extract a small offset and then feed the integration circuit to eliminate the offset. In other embodiments of the present invention, a data capture card (A/D card) may be used to perform real time calculations instead of the integration circuits 134a, 134b described above.

請參照第4圖，其係繪示根據本發明實施例之電磁鋼片劣化量測方法400的流程示意圖。在電磁鋼片劣化量測方法400中，首先進行步驟410，以利用激磁裝置110 來激發磁場，並將電磁鋼片W設置於磁場中。然後，進行步驟420，以分別將第一探針N1、第二探針N2以及第三探針N3分別設置於電磁鋼片W之複數個量測點上，以獲得第一量測訊號、第二量測訊號以及第三量測訊號。接著，進行步驟430，以利用處理模組130來計算第一量測訊號與第二量測訊號間之差值訊號以及第一量測訊號與第三量測訊號間之差值訊號。Please refer to FIG. 4 , which is a schematic flow chart of an electromagnetic steel sheet degradation measuring method 400 according to an embodiment of the invention. In the electromagnetic steel sheet deterioration measuring method 400, step 410 is first performed to utilize the excitation device 110. To excite the magnetic field and set the electromagnetic steel sheet W in the magnetic field. Then, step 420 is performed to respectively set the first probe N1, the second probe N2, and the third probe N3 on the plurality of measurement points of the electromagnetic steel sheet W to obtain the first measurement signal, Two measurement signals and a third measurement signal. Then, the processing module 130 is used to calculate the difference signal between the first measurement signal and the second measurement signal and the difference signal between the first measurement signal and the third measurement signal.

在本實施例中，量測時是調整激磁電流，使得中央區域(A2或A3)的磁通量(電壓)達到預設值，再取兩側(A1或A4)作為加工劣化結果的評估。故，對於電磁鋼片W而言，具有四個不同的比較情況：A2-A1、A2-A4、A3-A4以及A2-A4。In the present embodiment, the excitation current is adjusted such that the magnetic flux (voltage) of the central region (A2 or A3) reaches a preset value, and both sides (A1 or A4) are taken as an evaluation of the processing deterioration result. Therefore, for the electromagnetic steel sheet W, there are four different comparison cases: A2-A1, A2-A4, A3-A4, and A2-A4.

在A2-A1的比較情況下，第一探針N1係量測測量點P1，第二探針N2係量測測量點P2，而第三探針N3係量測測量點P3。如此，處理模組130根據第一量測訊號與第二量測訊號所計算獲得之磁通訊號即代表區域A2的加工劣化狀況，而處理模組130根據第一量測訊號與第三量測訊號所計算獲得之磁通訊號即代表區域A1的加工劣化狀況。藉由比較這兩個磁通訊號(例如計算其差值)，即可得到A2-A1的加工劣化狀況比較結果。In the comparative case of A2-A1, the first probe N1 measures the measurement point P1, the second probe N2 measures the measurement point P2, and the third probe N3 measures the measurement point P3. In this manner, the processing module 130 calculates the magnetic communication number calculated according to the first measurement signal and the second measurement signal, that is, the processing degradation status of the representative area A2, and the processing module 130 determines the first measurement signal and the third measurement according to the first measurement signal and the third measurement. The magnetic communication number calculated by the signal represents the processing degradation status of the area A1. By comparing the two magnetic communication numbers (for example, calculating the difference), a comparison result of the processing deterioration status of A2-A1 can be obtained.

在A2-A4的比較情況下，第一探針N1係量測測量點P2，第二探針N2係量測測量點P1，而第三探針N3係量測測量點P4。如此，處理模組130根據第一量測訊號與第二量測訊號所計算獲得之磁通訊號即代表區域A2的加 工劣化狀況，而處理模組130根據第一量測訊號與第三量測訊號所計算獲得之磁通訊號即代表區域A4的加工劣化狀況。藉由比較這兩個磁通訊號，即可得到A2-A4的加工劣化狀況比較結果。In the comparative case of A2-A4, the first probe N1 measures the measurement point P2, the second probe N2 measures the measurement point P1, and the third probe N3 measures the measurement point P4. Thus, the magnetic communication number calculated by the processing module 130 according to the first measurement signal and the second measurement signal is the addition of the representative area A2. The process is degraded, and the magnetic communication number calculated by the processing module 130 based on the first measurement signal and the third measurement signal represents the processing degradation status of the area A4. By comparing the two magnetic communication numbers, the comparison result of the processing deterioration status of A2-A4 can be obtained.

在A3-A4的比較情況下，第一探針N1係量測測量點P4，第二探針N2係量測測量點P3，而第三探針N3係量測測量點P4。如此，處理模組130根據第一量測訊號與第二量測訊號所計算獲得之磁通訊號即代表區域A3的加工劣化狀況，而處理模組130根據第一量測訊號與第三量測訊號所計算獲得之磁通訊號即代表區域A4的加工劣化狀況。藉由比較這兩個磁通訊號，即可得到A3-A4的加工劣化狀況比較結果。In the comparative case of A3-A4, the first probe N1 measures the measurement point P4, the second probe N2 measures the measurement point P3, and the third probe N3 measures the measurement point P4. In this manner, the processing module 130 calculates the magnetic communication number calculated according to the first measurement signal and the second measurement signal, that is, the processing degradation status of the representative area A3, and the processing module 130 determines the first measurement signal and the third measurement according to the first measurement signal and the third measurement. The magnetic communication number calculated by the signal represents the processing degradation status of the area A4. By comparing the two magnetic communication numbers, the comparison result of the processing deterioration status of A3-A4 can be obtained.

在A2-A4的比較情況下，第一探針N1係量測測量點P2，第二探針N2係量測測量點P1，而第三探針N3係量測測量點P4。如此，處理模組130根據第一量測訊號與第二量測訊號所計算獲得之磁通訊號即代表區域A2的加工劣化狀況，而處理模組130根據第一量測訊號與第三量測訊號所計算獲得之磁通訊號即代表區域A4的加工劣化狀況。藉由比較這兩個磁通訊號，即可得到A2-A4的加工劣化狀況比較結果。In the comparative case of A2-A4, the first probe N1 measures the measurement point P2, the second probe N2 measures the measurement point P1, and the third probe N3 measures the measurement point P4. In this manner, the processing module 130 calculates the magnetic communication number calculated according to the first measurement signal and the second measurement signal, that is, the processing degradation status of the representative area A2, and the processing module 130 determines the first measurement signal and the third measurement according to the first measurement signal and the third measurement. The magnetic communication number calculated by the signal represents the processing degradation status of the area A4. By comparing the two magnetic communication numbers, the comparison result of the processing deterioration status of A2-A4 can be obtained.

由上述之說明可知，本發明實施例之電磁鋼片劣化量測方法與其量測機台係利用三根探針N1-N3來獲得電磁鋼片內各區域A1-A4的磁通量，並對其進行比較，以測定電磁鋼片的加工劣化情況。本發明實施例之電磁鋼片劣化 量測方法與其量測機台具有構造簡單、容易實施、非破壞性試驗等優點，故適用於量測各種電磁鋼片之加工劣化情況。It can be seen from the above description that the electromagnetic steel sheet deterioration measuring method and the measuring machine platform of the embodiment of the present invention use three probes N1-N3 to obtain the magnetic fluxes of the respective areas A1-A4 in the electromagnetic steel sheet, and compare them. To determine the processing deterioration of the electromagnetic steel sheet. Electromagnetic steel sheet deterioration of the embodiment of the invention The measuring method and the measuring machine have the advantages of simple structure, easy implementation, non-destructive testing, etc., and therefore are suitable for measuring the processing deterioration of various electromagnetic steel sheets.

雖然本發明已以數個實施例揭露如上，然其並非用以限定本發明，在本發明所屬技術領域中任何具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。While the invention has been described above in terms of several embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced in various embodiments without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims.

400‧‧‧電磁鋼片劣化量測方法400‧‧‧Electromagnetic steel sheet degradation measurement method

410~430‧‧‧步驟410~430‧‧‧Steps

Claims (8)

一種電磁鋼片劣化量測機台，包含：一激磁裝置，用以激發一磁場；一鋼片固定座，用以固定一電磁鋼片，並使該電磁鋼片位於該磁場中；一第一探針，設置於該電磁鋼片之一第一量測點上，以獲得一第一量測訊號；一第二探針，設置於該電磁鋼片之一第二量測點上，以獲得一第二量測訊號；一第三探針，設置於該電磁鋼片之一第三量測點上，以獲得一第三量測訊號；以及一處理模組，電性連接至該第一探針、該第二探針以及該第三探針，以計算出該第二量測訊號與該第一量測訊號之一第一差值訊號以及計算出該第三量測訊號與該第一量測訊號之一第二差值訊號；其中該電磁鋼片具有一第一加工面和一第二加工面，該第一量測點與該第一加工面之一第一距離小於該第一量測點與該第二加工面之一第二距離，且該第一距離之值大於該電磁鋼片之厚度值的一倍。 An electromagnetic steel sheet deterioration measuring machine comprises: an excitation device for exciting a magnetic field; a steel sheet fixing seat for fixing an electromagnetic steel sheet, and the electromagnetic steel sheet is located in the magnetic field; a probe is disposed on a first measuring point of the electromagnetic steel sheet to obtain a first measuring signal; a second probe is disposed on a second measuring point of the electromagnetic steel sheet to obtain a second measuring signal; a third probe disposed on a third measuring point of the electromagnetic steel sheet to obtain a third measuring signal; and a processing module electrically connected to the first The probe, the second probe, and the third probe are configured to calculate a first difference signal between the second measurement signal and the first measurement signal, and calculate the third measurement signal and the first a second difference signal of one of the measurement signals; wherein the electromagnetic steel sheet has a first processing surface and a second processing surface, and the first measurement point and the first processing surface have a first distance smaller than the first a second distance between the measuring point and the second processing surface, and the value of the first distance is greater than the thickness of the electromagnetic steel sheet It doubled. 如請求項第1項所述之電磁鋼片劣化量測機台，其中該激磁裝置為激磁鐵芯。 The electromagnetic steel sheet deterioration measuring machine according to Item 1, wherein the exciting device is a exciting magnet core. 如請求項第1項所述之電磁鋼片劣化量測機台，其中該處理模組包含： 一放大器，用以放大該第一差值和該第二差值；以及一積分器，用以分別對該第一差值訊號和該第二差值訊號積分。 The electromagnetic steel sheet deterioration measuring machine according to Item 1, wherein the processing module comprises: An amplifier for amplifying the first difference and the second difference; and an integrator for integrating the first difference signal and the second difference signal, respectively. 如請求項第1項所述之電磁鋼片劣化量測機台，其中該第一量測點和該第二量測點位於該電磁鋼片之一第一表面且對稱於該第一加工面和該第二加工面間之一中心線。 The electromagnetic steel sheet deterioration measuring machine according to Item 1, wherein the first measuring point and the second measuring point are located on a first surface of the electromagnetic steel sheet and are symmetric with the first processing surface. And a center line between the second processing surface. 如請求項第4項所述之電磁鋼片劣化量測機台，其中該第三量測點和位於相對該第一表面之一第二表面上，且與該第一量測點相對稱。 The electromagnetic steel sheet deterioration measuring machine according to Item 4, wherein the third measuring point is located on a second surface opposite to the first surface and is symmetrical with the first measuring point. 一種電磁鋼片劣化量測方法，包含：利用一激磁裝置來激發一磁場；將一電磁鋼片設置於該磁場中，其中該電磁鋼片具有一第一加工面和一第二加工面；將一第一探針設置於該電磁鋼片之一第一量測點上，以獲得一第一量測訊號，該第一量測點與該第一加工面之一第一距離小於該第一量測點與該第二加工面之一第二距離，且該第一距離之值大於該電磁鋼片之厚度值的一倍；將一第二探針設置於該電磁鋼片之一第二量測點上，以獲得一第二量測訊號；將一第三探針設置於該電磁鋼片之一第三量測點上，以獲得一第三量測訊號；以及計算出該第二量測訊號與該第一量測訊號之一第一差 值訊號；計算出該第三量測訊號與該第一量測訊號之一第二差值訊號；以及根據該第一差值訊號和該第二差值訊號來判斷該電磁鋼片之加工劣化情況。 A method for measuring the deterioration of an electromagnetic steel sheet, comprising: exciting a magnetic field by using an excitation device; and arranging an electromagnetic steel sheet in the magnetic field, wherein the electromagnetic steel sheet has a first processing surface and a second processing surface; a first probe is disposed on a first measuring point of the electromagnetic steel sheet to obtain a first measuring signal, and the first measuring point has a first distance from the first processing surface that is smaller than the first Measuring a second distance from the second processing surface, and the value of the first distance is greater than one time of the thickness of the electromagnetic steel sheet; and setting a second probe to the second of the electromagnetic steel sheet Measuring a point to obtain a second measurement signal; setting a third probe on a third measurement point of the electromagnetic steel sheet to obtain a third measurement signal; and calculating the second The first difference between the measurement signal and the first measurement signal a value signal; calculating a second difference signal between the third measurement signal and the first measurement signal; and determining the processing degradation of the electromagnetic steel sheet according to the first difference signal and the second difference signal Happening. 如請求項第6項所述之電磁鋼片劣化量測方法，其中該第一量測點和該第二量測點位於該電磁鋼片之一第一表面且對稱於該第一加工面和該第二加工面間之一中心線。 The electromagnetic steel sheet deterioration measuring method according to Item 6, wherein the first measuring point and the second measuring point are located on a first surface of the electromagnetic steel sheet and are symmetric with the first processing surface and A centerline between the second machined faces. 如請求項第7項所述之電磁鋼片劣化量測方法，其中該第三量測點和位於相對該第一表面之一第二表面上，且與該第一量測點相對稱。The electromagnetic steel sheet deterioration measuring method according to Item 7, wherein the third measuring point is located on a second surface opposite to the first surface and is symmetrical with the first measuring point.
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