mwirth-epo/epo-nmt-datasets huggingface dataset:
因此，在不脱离本发明的范围内，下面描述的第一部分、成分、区域、层和/或段也可以被描述为第二部分、成分、区域、层和/或段。
Thus, a first part, a first component, a first area, a first layer, or a first section which is described below may be mentioned as a second part, a second component, a second area, a second layer, or a second section without departing from the scope of the present disclosure.
本文所使用的术语只是出于描述特定实施例，并不意在限定本发明。
Here, terminologies are merely used to describe a specific embodiment, and are not intended to limit the present disclosure.
除非上下文中另给出明显相反的含义，否则本文所使用的单数形式也意在包含复数形式。
A singular form used herein includes a plural form as long as phrases do not express a clearly opposite meaning.
还应该理解的是，术语“包含”可以具体指某一特性、区域、整数、步骤、动作、要素及/或成分，但并不排除其他特性、区域、整数、步骤、动作、要素及/或成分的存在或附加。
The term "include" used in the specification specifies specific characteristics, areas, essences, steps, operations, elements, and/or ingredients, and does not exclude existence or addition of other characteristics, areas, essences, steps, operations, elements, and/or ingredients.
如果某一部分被描述为在另一个部分“之上”或者“上方”，则可以直接在另一个部分“之上”或者“上方”，或者它们之间存在其他部分。
When it is mentioned that a first component is located "above" or "on" a second component, the first component may be located directly "above" or "on" the second component or a third component may be interposed therebetween.
当某一部分被描述为“直接位于”另一个部分上面时，它们之间不会存在其他部分。
In contrast, when it is mentioned that a first component is located "directly above" a second component, a third component is not interposed therebetween.
虽然没有另作定义，但本文使用的所有术语(包含技术术语和科学术语)的含义与所属领域的技术人员通常理解的意思相同。
Although not otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meanings as those generally understood by those skilled in the art to which the present disclosure pertains.
对于辞典里面有定义的术语，应该被解释为具有与相关技术文献和本文中公开的内容一致的意思，而只要未作定义不应该以理想化或过于正式的含义来解释。
Terms defined in a generally used dictionary are interpreted as having meanings according with related technical documents and currently disclosed contents, and are not to be interpreted as idealized meanings or very formal meanings unless otherwise defined.
下面详细描述本发明的实施例，以使本发明所属领域的普通技术人员容易实施本发明。
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.
然而，本发明能够以各种不同方式实施，并不局限于本文所述的实施例。
As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.
本发明的一实施例分别提供电工钢板粘合涂覆组合物、电工钢板层压体、电工钢板产品的制造方法。
Exemplary embodiment of the present invention respectively provide an electrical steel sheet adhesive coating composition, an electrical steel sheet laminate, and a method for manufacturing an electrical steel sheet product.
根据本发明一实施例的电工钢板粘合涂覆组合物，以总固体100重量％为基准，包含：15至70重量％的第一组合物，所述第一组合物包含有机树脂和无机纳米粒子被取代到有机树脂中的有/无机复合体；20至80重量％的第二组合物，所述第二组合物包含金属磷酸盐和酸盐；以及1至10重量％的偶联剂。
An electrical steel sheet adhesive coating composition according to an exemplary embodiment of the present invention includes, on the basis of 100 wt% of total solids: 15 to 70 wt% of a first composition containing an organic resin and an organic/inorganic composite in which inorganic nanoparticles are substituted for an organic resin; 20 to 80 wt% of a second composition containing a metal phosphate and phosphoric acid; and 1 to 10 wt% of a coupling agent.
根据本发明一实施例的电工钢板粘合涂覆组合物不使用焊接、夹紧、紧扣等现有的接合方法便可粘合(接合)电工钢板。
The electrical steel sheet adhesive coating composition according to the exemplary embodiment of the present invention can bond (fasten) electrical steel sheets without using conventional fastening methods such as welding, clamping, interlocking, and the like.
而且消除应力退火工艺之后仍能保持粘结力。
In addition, the bonding force can be maintained even after a stress relief annealing process.
本发明的一实施例中，电工钢板可为无取向电工钢板或者取向电工钢板，更为具体地，可为无取向电工钢板。
In the exemplary embodiment of the present invention, the electrical steel sheet is a non-oriented or oriented electrical steel sheet, and more particularly, it may be a non-oriented electrical steel sheet.
下面按照各成份进行具体说明。
Hereinafter, each component will be described in detail.
1.一种无取向电工钢板，以重量％计，所述钢板包含2.0至3.5％的Si、0.3至2.5％的Al、0.3至3.5％的Mn、0.0030至0.2％的Sn、0.0030至0.15％的Sb、0.0040至0.18％的P、各自单独或合计含量为0.0005至0.03％的Ga和Ge中的一种以上、余量的Fe和不可避免的杂质，并且满足下述式1，
A non-oriented electrical steel sheet comprising, by weight, Si: 2.0 to 3.5 %, Al: 0.3 to 2.5 %, Mn: 0.3 to 3.5 %, Sn: 0.0030 to 0.2 %, Sb: 0.0030 to 0.15 %, P: 0.0040 to 0.18 %, individually or in a total amount of 0.0005 to 0.03 % of at least one of Ga and Ge, and a remainder including Fe and unavoidable impurities, and satisfying Equation 1 below: 0.05 ≤ Sn + Sb / P ≤ 25 ([Sn], [Sb], and [P] respectively represent the content (% by weight) of Sn, Sb, and P.)
2.根据权利要求1所述的无取向电工钢板，其还包含0.0040％以下(0％除外)的N、0.0040％以下(0％除外)的C、0.0040％以下(0％除外)的S、0.0030％以下(0％除外)的Ti、0.0030％以下(0％除外)的Nb和0.0040％以下(0％除外)的V中的一种以上。
The non-oriented electrical steel sheet of claim 1, further comprising one or more of N: 0.0040 % or less (excluding 0 %), C: 0.0040 % or less (excluding 0 %), S: 0.0040 % or less (excluding 0 %), Ti: 0.0030 % or less (excluding 0 %), Nb: 0.0030 % or less (excluding 0 %) and V: 0.0040 % or less (excluding 0 %).
0.2≤([Si]+[Al]+0.5×[Mn])/(([Ga]+[Ge])×1000)≤5.27
The non-oriented electrical steel sheet of claim 1, wherein Equation 2 below is satisfied: 0.2 ≤ Si + Al + 0.5 × Mn / Ga + Ge × 1000 ≤ 5.27 ([Si], [Al], [Mn], [Ga], and [Ge] respectively represent the content (% by weight) of Si, Al, Mn, Ga, and Ge.)
4.根据权利要求1所述的无取向电工钢板，其包含0.0005至0.02重量％的Ga和0.0005至0.02重量％的Ge。
The non-oriented electrical steel sheet of claim 1, wherein Ga: 0.0005 to 0.02 wt% and Ge: 0.0005 to 0.02 wt% are included.
3.3≤([Si]+[Al]+0.5×[Mn])≤5.5
The non-oriented electrical steel sheet of claim 1, wherein Equation 3 below is satisfied: 3.3 ≤ Si + Al + 0.5 × Mn ≤ 5.5 ([Si], [Al], and [Mn] respectively represent the content (% by weight) of Si, Al, and Mn.)
其中，1/2t是指整个钢板厚度中1/2厚度，1/4t是指整个钢板厚度中1/4厚度，P200表示XRD试验中出现的200面15度以内获得的衍射峰值强度，P211表示211面15度以内获得的衍射峰值强度，P311表示311面15度以内获得的衍射强度峰值。
The non-oriented electrical steel sheet of claim 1, wherein when XRD-testing an area of 1/2t to 1/4t of a thickness of a steel sheet, a strength ratio of a texture satisfies P200 / (P211 P310) ≥ 0.5: (1/2t means 1/2 of the thickness of the entire steel sheet, 1/4t means 1/4 of the thickness of the entire steel sheet, P200 means the strength of the diffraction peak obtained within 15 degrees of a 200 plane appearing in an XRD test, a P211 means the strength of the diffraction peak obtained within 15 degrees of 211 plane, and a P311 means the peak of the diffraction strength obtained within 15 degrees of the 311 plane.)
7.根据权利要求1所述的无取向电工钢板，其平均晶体粒径为50至95μm。
The non-oriented electrical steel sheet of claim 1, wherein an average diameter of grains is 50 to 95 µm.
制造板坯的步骤，以重量％计，所述板坯包含2.0至3.5％的Si、0.3至2.5％的Al、0.3至3.5％的Mn、0.0030至0.2％的Sn、0.0030至0.15％的Sb、0.0040至0.18％的P、各自单独或合计含量为0.0005至0.03％的Ga和Ge中的一种以上、余量的Fe和不可避免的杂质，并且满足下述式1；
A method for manufacturing a non-oriented electrical steel sheet, comprising: producing a slab including, by weight, Si: 2.0 to 3.5 %, Al: 0.3 to 2.5 %, Mn: 0.3 to 3.5 %, Sn: 0.0030 to 0.2 %, Sb: 0.0030 to 0.15 %, P: 0.0040 to 0.18 %, individually or in a total amount of 0.0005 to 0.03 % of at least one of Ga and Ge, and a remainder including Fe and unavoidable impurities, and satisfying Equation 1; heating the slab; hot rolling the slab to produce a hot-rolled sheet; cold rolling the hot-rolled sheet to produce a cold-rolled sheet; and finally annealing the cold-rolled sheet: 0.05 ≤ Sn + Sb / P ≤ 25 ([Sn], [Sb], and [P] respectively represent the content (% by weight) of Sn, Sb, and P.)
所述板坯还包含0.0040％以下(0％除外)的N、0.0040％以下(0％除外)的C、0.0040％以下(0％除外)的S、0.0030％以下(0％除外)的Ti、0.0030％以下(0％除外)的Nb和0.0040％以下(0％除外)的V中的一种以上。
The method for manufacturing the non-oriented electrical steel sheet of claim 8, wherein the slab further includes one or more of N: 0.0040 % or less (excluding 0 %), C: 0.0040 % or less (excluding 0 %), S: 0.0040 % or less (excluding 0 %), Ti: 0.0030 % or less (excluding 0 %), Nb: 0.0030 % or less (excluding 0 %), and V: 0.0040 % or less (excluding 0 %).
0.2≤([Si]+[Al]+0.5×[Mn])/(([Ga]+[Ge])×1000)≤5.27
The method for manufacturing the non-oriented electrical steel sheet of claim 8, wherein the slab satisfies Equation 2 below: 0.2 ≤ Si + Al + 0.5 × Mn / Ga + Ge × 1000 ≤ 5.27 ([Si], [Al], [Mn], [Ga], and [Ge] respectively represent the content (% by weight) of Si, Al, Mn, Ga, and Ge.)
所述板坯包含0.0005至0.02重量％的Ga和0.0005至0.02重量％的Ge。
The method for manufacturing the non-oriented electrical steel sheet of claim 8, wherein: the slab includes Ga: 0.0005 to 0.02 wt% and Ge: 0.0005 to 0.02 wt%.
3.3≤([Si]+[Al]+0.5×[Mn])≤5.5
The method for manufacturing the non-oriented electrical steel sheet of claim 8, wherein the slab satisfies Equation 3 below: 3.3 ≤ Si + Al + 0.5 × Mn ≤ 5.5 ([Si], [Al], and [Mn] respectively represent the content (% by weight) of Si, Al, and Mn.)
13.根据权利要求8所述的无取向电工钢板的制造方法，其中，
The method for manufacturing the non-oriented electrical steel sheet of claim 8, further comprising after producing the hot-rolled sheet, annealing the hot-rolled sheet.
在所述热轧板退火步骤中，在1050至1150℃的温度下对所述热轧板进行退火。
The method for manufacturing the non-oriented electrical steel sheet of claim 13, wherein in the annealing of the hot-rolled sheet, the hot-rolled sheet is annealed at a temperature of 1050 to 1150 °C.
磁体组件56是具有中心/中心轴线78的圆柱形形状。
The magnet assembly 56 is cylindrical in shape having a center/central axis 78.
磁体组件56包括低温恒温器80和一个或多个径向对准的纵向间隔开的超导线圈82，该超导线圈形成极化磁体58(图1)。
The magnet assembly 56 includes a cryostat 80 and one or more radially aligned longitudinally spaced apart superconductive coils 82 that form the polarizing magnet 58 (FIG. 1 ).
超导线圈82能够承载大电流并被设计成在患者/目标空间60内产生B0磁场。
The superconductive coils 82 are capable of carrying large electrical currents and are designed to create the B0field within the patient/target volume 60.
如将理解的那样，磁体组件56还可包括围绕低温恒温器80的末端护罩和真空容器(未示出)，以帮助使低温恒温器80与由MRI系统10的其余部分产生的热量隔离(图1)。
As will be appreciated, the magnet assembly 56 may further include both a terminal shield and a vacuum vessel (not shown) surrounding the cryostat 80 in order to help insulate the cryostat 80 from heat generated by the rest of the MRI system 10 (FIG. 1 ).
磁体组件56还可以进一步包括其他元件，诸如覆盖件、支撑件、悬架构件、端盖、托架等(未示出)。
The magnet assembly 56 may still further include other elements such as covers, supports, suspension members, end caps, brackets, etc. (not shown).
虽然图1和图2所示的磁体组件56的实施方案利用了圆柱形拓扑结构，但是应当理解，也可以使用除圆柱形之外的拓扑结构。
While the embodiment of the magnet assembly 56 shown in FIGS. 1 and 2 utilizes a cylindrical topology, it should be understood that topologies other than cylindrical may be used.
例如，开放式MRI系统中的平坦几何形状也可以利用以下描述的本发明的实施方案。
For example, a flat geometry in a split-open MRI system may also utilize embodiments of the invention described below.
如图2进一步所示，将患者/成像对象84插入磁体组件56中。
As further shown in FIG. 2, a patient/imaged subject 84 is inserted into the magnet assembly 56.
图3至图6示出了梯度线圈组件54的各种梯度线圈86、88和90(图3)。
Illustrated in FIGS. 3-6 are various gradient coils 86, 88, and 90 of the gradient coil assembly 54 (FIG. 3 ).
如将理解的那样，在实施方案中，梯度线圈组件54可包括可操作以沿着/对应于x轴92产生/施加梯度磁场的x梯度线圈86(在图4中充分示出)、可操作以沿着/对应于y轴94产生/施加梯度磁场的y梯度线圈88(在图5中充分示出)以及可操作以沿着/对应于z轴91产生/施加梯度磁场的z梯度线圈90(在图6中充分示出)，该z轴可以与磁体组件56(图1和图2)的中心轴线78(图2)相同。
As will be understood, in embodiments, the gradient coil assembly 54 may include an x-gradient coil 86 (best seen in FIG. 4 ) operative to generate/apply a gradient magnetic field along/corresponding to an x-axis 92, a y-gradient coil 88 (best seen in FIG. 5 ) operative to generate/apply a gradient magnetic field along/corresponding to a y-axis 94, and a z-gradient coil 90 (best seen in FIG. 6 ) operative to generate/apply a gradient magnetic field along/corresponding to a z-axis 91, which may be the same as the central axis 78 (FIG. 2 ) of the magnet assembly 56 (FIGS. 1 and 2 ).
如将理解的那样，除了施加沿着轴线91、92和94取向的磁梯度之外，可利用梯度线圈86、88和90沿着/对应于由三个轴91、92和94限定的空间内的任何方向施加磁梯度。
As will be appreciated, in addition to applying magnetic gradients oriented along the axes 91, 92, and 94, the gradient coils 86, 88, and 90 may be utilized to apply magnetic gradients along/corresponding to any direction within the space defined by the three axes 91, 92, and 94.
转到图7，其中示出了根据本发明的示例性实施方案的用于监测梯度线圈86、88和/或90(图4至图6)的健康状态的系统96。
Turning to FIG. 7, a system 96 for monitoring a health status of a gradient coil 86, 88, and/or 90 (FIGS. 4-6 ) according to an exemplary embodiment of the invention is shown.
在实施方案中，可被结合到MRI系统10(图1和图2)中的系统96包括一个或多个传感器98、100、102(同样示于图1和图4至图6中)、存储器设备104(可选)和控制器106。
The system 96, which, in embodiments, may be incorporated into the MRI system 10 (FIGS. 1 and 2 ), includes one or more sensors 98, 100, 102 (also shown in FIGS. 1 and 4-6 ), a memory device 104 (optionally), and a controller 106.
该一个或多个传感器98、100、102可操作以获得梯度线圈86、88和/或90的一个或多个参数读数107，并且存储器设备104可存储神经网络108(图12)和/或其他类型的模型。
The one or more sensors 98, 100, 102 are operative to obtain one or more parameter readings 107 of the gradient coil 86, 88, and/or 90, and the memory device 104 may store a neural network 108 (FIG. 12 ) and/or other types of models.
尽管在图1和图4至图7中描绘了三(3)个传感器98、100、102，但是应当理解，本发明不限于三(3)个传感器，并且实施方案可包括少于和/或多于三(3)个传感器。
Although three (3) sensors 98, 100, 102 are depicted in FIGS. 1 and 4-7, it will be understood that the invention is not limited to three (3) sensors and that embodiments may include fewer and or greater than three (3) sensors.
控制器106与该一个或多个传感器98、100、102、存储器设备104进行电子通信，并且可操作/配置/调整以生成健康状态110(图14)，该健康状态提供对梯度线圈86、88和/或90的结构退化的指示。
The controller 106 is in electronic communication with the one or more sensors 98, 100, 102, the memory device 104, and is operative/configured/adapted to generate a health status 110 (FIG. 14 ) that provides an indication of structural degradation of the gradient coil 86, 88, and/or 90.
如将会理解的那样，在实施方案中，存储器设备104可以与存储器设备30和/或72(图1)分开或包括该存储器设备30和/或72。
As will be understood, in embodiments, the memory device 104 may be separate from, or include, memory devices 30 and/or 72 (FIG. 1 ).
类似地，控制器106可以与控制器36(图1)分开或包括控制器36。
Similarly, the controller 106 may be separate from, or include, controller 36 (FIG. 1 ).
如在图4至图6中充分示出，该一个或多个传感器98、100、102可被设置为靠近，即接近、接触梯度线圈86、88和/或90内和/或位于该梯度线圈内。
As best seen in FIGS. 4-6, the one or more sensors 98, 100, 102 may be disposed proximate to, i.e., close, touching, and/or within, the gradient coil 86, 88, and/or 90.
在实施方案中，获得的参数读数107可包括声学测量值和/或反EMF测量值。
In embodiments, the obtained parameter readings 107 may include acoustic measurements and/or back EMF measurements.
例如，在某些实施方案中，传感器98、100、102中的一个或多个传感器可以是麦克风，例如电容式麦克风或光学麦克风，该麦克风采集由梯度线圈86、88和/或90生成的可具有频率、幅度或其他基于声音的量度的声学测量值。
For example, in certain embodiments, one or more of the sensors 98, 100, 102 may be a microphone, e.g., a condenser or optical microphone, that acquires acoustic measurements which may be of frequency, amplitude, or other sound-based metrics, generated by the gradient coil 86, 88, and/or 90.
如将理解的那样，梯度线圈86、88和/或90的声学特性随着线圈86、88和/或90的结构劣化的水平/量的变化而变化。
As will be understood, the acoustics of a gradient coil 86, 88, and/or 90 change as the level/amount of structural degradation of the coil 86, 88, and/or 90 changes.
因此，通过将从梯度线圈86、88和/或90采样的声学特性映射到已知的结构劣化水平，本发明的实施方案创建了一种模型，例如神经网络，该模型可用于基于其声学特性发现其他梯度线圈的结构劣化。
Thus, by mapping acoustics sampled from a gradient coil 86, 88, and/or 90 to known levels of structural degradation, embodiments of the present invention create a model, e.g., a neural network, that can be used to find the structural degradation of other gradient coils based on their acoustics.
现在参见图8和图9，如上所述，在实施方案中，该一个或多个传感器98、100和102可获得梯度线圈86、88和/或90的反EMF测量值。
Referring now to FIGS. 8 and 9, as stated above, in embodiments, the one or more sensors 98, 100, and 102 may obtain a back EMF measurement of a gradient coil 86, 88, and/or 90.
如图8和图9所示，在实施方案中，梯度放大器46(图1)可以向梯度线圈86、88和/或90(图4至图6)施加和去除激发电流200(图8)，其中反EMF测量值具有由梯度线圈86、88和/或90在B0磁场内的运动感应的电压202(图9)，在本文中也称为“反EMF电压”。
As shown in FIGS. 8 and 9, in embodiments, a gradient amplifier 46 (FIG. 1 ) may apply and remove an excitation current 200 (FIG. 8 ) to a gradient coil 86, 88, and/or 90 (FIGS. 4-6 ), where the back EMF measurement is of a voltage 202 (FIG. 9 ), also referred to herein as a “back EMF voltage”, induced by the movement of the gradient coil 86, 88, and/or 90 within the B0magnetic field.
在实施方案中，激发电流200可以是具有由于梯度线圈86、88和/或90变形(即，线圈86、88和/或90通过B0磁场线的运动)的洛伦兹力而产生的反EMF电压202的AC电流，其中线圈86、88和/或90最终回到平衡状态，即不具有通过B0磁场线的运动。
In embodiments, the excitation current 200 may be an AC current with the back EMF voltage 202 occurring due to the Lorentz force in gradient coil 86, 88, and/or 90 deformations, i.e., movement of the coil 86, 88, and/or 90 through the B0field lines, with the coil 86, 88, and/or 90 eventually settling back to equilibrium, i.e., no movement through the B0field lines.
如将理解的那样，梯度线圈86、88和/或90的结构劣化越大，则线圈86、88和/或90通过B0磁场线的位移/运动越大，并且因此，在线圈86、88和/或90中感应的反EMF电压202越大。
As will be understood, the greater the structural degradation of a gradient coil 86, 88, and/or 90, the greater the displacement/movement of the coil 86, 88, and/or 90 through the B0field lines, and, as a result, the greater the back EMF voltage 202 induced in the coil 86, 88, and/or 90.
例如，如图8和图9所示，梯度放大器46可以在一段时间例如t0至t1内施加激发电流200，这继而导致在t1处去除激发电流200之后以衰减的方式感应反EMF电压202，即，在线圈86、88和/或90返回平衡状态时，电压202的正弦波的振荡随时间推移而衰减/收缩。
For example, as shown in FIGS. 8 and 9, the gradient amplifier 46 may apply an excitation current 200 for a period of time, e.g., t0to t1, which, in turn, results in the back EMF voltage 202 being induced in a decaying manner after removal of the excitation current 200 at t1, i.e., the oscillations of the sine wave of the voltage 202 decay/shrink over time as the coil 86, 88, and/or 90 returns back to equilibrium.
如图10和图11所示，梯度线圈86、88和/或90的反EMF电压202的峰值电压(“Vpp”)可以指示任何经历的结构劣化。
As illustrated in FIGS. 10 and 11, the peak voltage (“Vpp”) of the back EMF voltage 202 of a gradient coil 86, 88, and/or 90 may be indicative of any experienced structural degradation.
例如，图10示出了在一天或多天的过程中以若干个频率测得的梯度线圈86、88和/或90的峰值电压的曲线图，其中特定一天的测量值形成曲线。
For example, FIG. 10 shows a plot of the peak voltage of a gradient coil 86, 88, and/or 90 measured at several frequencies over the course of one or more days, wherein the measurements of a particular day form a curve.
如将理解的那样，在梯度线圈86、88和/或90经历结构劣化时，曲线的形状(每条曲线由同一天在多个频率上的一个或多个峰值电压测量值形成)随时间推移而变化。
As will be understood the shape of the curves (each formed by one or more peak voltage measurements over a plurality of frequencies during the same day) change overtime as the gradient coil 86, 88, and/or 90 experiences structural degradation.
因此，图11描绘了经历很少结构劣化或几乎没有经历结构劣化的梯度线圈的曲线250，而曲线252是经历结构劣化直至失效点的梯度线圈。
Accordingly, FIG. 11 depicts a curve 250 for a gradient coil that has experienced little to no structural degradation, while curve 252 is of a gradient coil that has experienced structural degradation to the point of failure.
因此，如图11所示，经历了显著量的结构劣化的梯度线圈86、88和/或90(即，已经失效或将要失效的梯度线圈)的反EMF电压252可能会在一个或多个激发电流频率下表现出与经历很少结构劣化或几乎没有经历结构劣化的类似梯度线圈86、88和/或90的反EMF电压250的统计偏差。
Thus, as shown in FIG. 11, the back EMF voltage 252 of a gradient coil 86, 88, and/or 90 that has experienced a significant amount of structural degradation, i.e., a gradient coil that has failed or is about to fail, may exhibit a statistical deviation, at one or more excitation current frequencies, from the back EMF voltage 250 of a similar gradient coil 86, 88, and/or 90 that has experienced little to no structural degradation.
应当理解，本发明的实施方案可以至少部分地基于在梯度线圈86、88和/或90的反EMF电压中检测到的与(类似梯度线圈的)历史标准和/或基线数据的检测到的统计偏差来确定特定梯度线圈86、88和/或90是否已经失效。
As will be appreciated, embodiments of the present invention may determine whether a particular gradient coil 86, 88, and/or 90 has failed based at least in part on detected statistical deviations from historical norms and/or baseline data (for similar gradient coils) detected in the back EMF voltage of the gradient coil 86, 88, and/or 90.
对于不同的梯度线圈(例如，不同的设计、不同的制造商等)，激发电流频率的范围和反EMF电压的范围可以变化，并且可以在不进行过多实验的情况下进行识别。
The range of the excitation current frequency and the range of the back EMF voltage may vary for different gradient coils (e.g., different designs, different manufacturers, etc.) and can be identified without undue experimentation.
因此，在实施方案中，一个或多个传感器98、100、102可包括测量梯度线圈86、88和/或90中的反EMF电压202的电压表。
Thus, in embodiments, the one or more sensors 98, 100, 102 may include a voltmeter that measures the back EMF voltage 202 in a gradient coil 86, 88, and/or 90.
如将理解的那样，在实施方案中，电压表98、100、102可被设置在x、y或z梯度放大器46中的一个或多个梯度放大器中，如图1进一步所示。
As will be appreciated, in embodiments, the voltmeter 98, 100, 102 may be disposed in one or more of the x, y, or z gradient amplifiers 46 as further shown in FIG. 1.
因此，在一些实施方案中，传感器98、100、102可以是从梯度放大器46的角度测量梯度线圈86、88和/或90的反EMF电压的电压表。
Thus, in some embodiments, the sensors 98, 100, 102 may be voltmeters that measure the back EMF voltage of a gradient coil 86, 88, and/or 90 from the perspective of the gradient amplifiers 46.
虽然前面的段落已将一个或多个参数读数107(图7和图17)讨论为声学和/或反EMF测量值，但是应当理解，在实施方案中，所获得的参数读数107可包括：阻抗测量值；电感测量值；电阻测量值；应变测量值；温度测量值；加速度测量值，例如梯度线圈86、88和/或90的物理振动；B0漂移测量值；接线盒扭矩测量值，例如接线盒134(图2)上的应变，该接线盒将梯度线圈86、88和/或90连接到提供电功率的电缆，所述电功率例如激发/激励线圈86、88和/或90的激发电流200(图8)；和/或其他适于确定梯度线圈86、88和/或90的结构劣化的量度。
While the foregoing paragraphs have discussed the one or more parameter readings 107 (FIGS. 7 and 17 ) as being either acoustics and/or back EMF measurements, it will be understood that, in embodiments, the obtained parameter readings 107 may include: impedance measurements; inductance measurements; resistance measurements; strain measurements; temperature measurements; acceleration measurements, e.g., the physical vibration of the gradient coil 86, 88, and/or 90; B 0 drift measurements; terminal block torque measurements, e.g., strain on the terminal blocks 134 (FIG. 2 ) which connect the gradient coil 86, 88, and/or 90 to power cables that supply the electrical power, e.g., the excitation current 200 (FIG. 8 ) that excites/energizes the coil 86, 88, and/or 90; and/or other metrics appropriate for determining the structural degradation of the gradient coil 86, 88, and/or 90.
因此，在此类实施方案中，一个或多个传感器98、100、102可包括电阻传感器、应变仪、温度探头、加速度计、电流计和/或其他类型的适于测量前述量度的传感器。
Accordingly, in such embodiments, the one or more sensors 98, 100, 102 may include resistance sensors, strain gauges, temperature probes, accelerometers, current meters, and/or other types of sensors suitable for measuring the aforementioned metrics.
现在转到图12，在一些实施方案中，神经网络108用于监测梯度线圈的健康状态。
Moving now to FIG. 12, in some embodiments, a neural network 108 is used for monitoring the health status of the gradient coil.
神经网络108可包括一个或多个节点/神经元112，在实施方案中，这些节点/神经元可被设置在一个或多个层114、116、118、120、122、124、126中。
The neural network 108 may include one or more nodes/neurons 112 which, in embodiments, may be disposed into one or more layers 114, 116, 118, 120, 122, 124, 126.
如本文关于神经网络所用，术语“层”是指具有以类似方式连接到模拟神经元的其他集合的输入和/或输出的模拟神经元的集合。
As used herein with respect to a neural network, the term “layer” refers to a collection of simulated neurons that have inputs and/or outputs connected in similar fashion to other collections of simulated neurons.
因此，如图12所示，神经元112可经由一个或多个连接128彼此连接，使得数据例如从一个或多个传感器98、100、102获得的参数读数107(图7和图17)可从输入层114传播通过一个或多个中间层116、118、120、122、124到输出层126。
Accordingly, as shown in FIG. 12, the neurons 112 may be connected to each other via one or more connections 128 such that data, e.g., the parameter readings 107 (FIGS. 7 and 17 ) obtained from the one or more sensors 98, 100, 102 may propagate from an input layer 114, through one or more intermediate layers 116, 118, 120, 122, 124, to an output layer 126.
如图13所示，单个神经元112的连接128可包括一个或多个输入连接130和一个或多个输出连接132。
As shown in FIG. 13, the connections 128 of an individual neuron 112 may include one or more input connections 130 and one or more output connections 132.
神经元112的每个输入连接130可以是前导神经元的输出连接，并且神经元112的输出连接132可以是一个或多个后续神经元的输入连接。
Each input connection 130 of a neuron 112 may be an output connection of a preceding neuron, and the output connections 132 of the neuron 112 may be an input connection of one or more subsequent neurons.
虽然图13将神经元112描绘为具有单个输出连接132，但是应当理解，神经元可具有发射/传递相同值的多个输出连接。
While FIG. 13 depicts a neuron 112 as having a single output connection 132, it will be understood that neurons may have multiple output connections that transmit/pass the same value.