電氣專業(yè)-外文翻譯--電容式傳感器操作第一部分：基礎(chǔ)-電氣類-免費(fèi)閱讀
【正文】 當(dāng)一個(gè)非導(dǎo)體 插入 探頭和一個(gè)固定的參考指標(biāo) 之間 ， 感應(yīng)場 穿過 材料到 接地目標(biāo)。 電子驅(qū)動器可以被配置為主 或 副 ，主 系統(tǒng)為副系統(tǒng) 設(shè)置了多通道 同步系統(tǒng) 。面積越大， 范圍越大 。 如果更高頻率的輸出前過濾，其結(jié)果是減少噪音和高 分辨率 （圖 8,9）。 分辨率的主要決定因素 是電氣噪聲。 與 15 kHz的帶寬，為 177。 一個(gè)有著嚴(yán)重靈敏度 錯(cuò)誤 的 系統(tǒng)仍然可以非常 好的 線性的。線性度 規(guī)范 是測量 輸出結(jié)果偏離直線多遠(yuǎn) 。 當(dāng)靈敏度偏離理想值，這是所謂的靈敏度誤差，增益誤差， 縮放錯(cuò)誤 。 因?yàn)?在感應(yīng)區(qū)和守衛(wèi)之間 沒有電壓差，所以在他們之間就沒有電場。 有了這個(gè)校準(zhǔn)，一個(gè) 2V的輸出變化就意味著目標(biāo)距離探測器發(fā)生了 200181。因此，電容的任何改變都是探針和目標(biāo)之間的距 離變化產(chǎn)生的。傳感器就能檢測出電子移動所產(chǎn)生的交流電流。 the master sets the synchronization for the slaves in multichannel systems. 畢業(yè)設(shè)計(jì)（論文）外文翻 譯 Effects of Target Material The sensing electric field is seeking a conductive surface. Provided that the target is a conductor, capacitive sensors are not affected by the specific target material。 V change at 15 kHz. Widebandwidth sensors can sense highfrequency motion and provide fastresponding outputs to maximize the phase margin when used in servocontrol feedback systems。畢業(yè)設(shè)計(jì)（論文）外文翻 譯 Capacitive Sensor Operation Part 1: The Basics Part 1 of this twopart article reviews the concepts and theory of capacitive sensing to help to optimize capacitive sensor performance. Part 2 of this article will discuss how to put these concepts to work. Noncontact capacitive sensors measure the changes in an electrical property called capacitance. Capacitance describes how two conductive objects with a space between them respond to a voltage difference applied to them. A voltage applied to the conductors creates an electric field between them, causing positive and negative charges to collect on each object Capacitive sensors use an alternating voltage that causes the charges to continually reverse their positions. The movement of the charges creates an alternating electric current that is detected by the sensor. The amount of current flow is determined by the capacitance, and the capacitance is determined by the surface area and proximity of the conductive objects. Larger and closer objects cause greater current than smaller and more distant objects. Capacitance is also affected by the type of nonconductive material in the gap between the objects. Technically speaking, the capacitance is directly proportional to the surface area of the objects and the dielectric constant of the material between them, and inversely proportional to the distance between them as shown.: In typical capacitive sensing applications, the probe or sensor is one of the conductive objects and the target object is the other. (Using capacitive sensors to sense plastics and other insulators will be discussed in the second part of this article.) The sizes of the sensor and the target are assumed to be constant, as is the material between them. Therefore, any change in capacitance is a result of a change in the distance between the probe and the target. The electronics are calibrated to generate specific voltage changes for corresponding changes in capacitance.
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