匿名使用者
匿名使用者 發問時間: 社會與文化語言 · 10 年前

請問"反射波動、交替極化"英文怎麼說? 機械領域 20點

不好意思又麻煩大家了!!! 請懂理工又懂機械的達人幫忙一下! 小弟不才 雖然英文還不錯但要翻譯這麼深奧的實在不堪負荷~老闆又......請大家幫幫忙!

從圖3所示之三相偏心薄盤式超音波致動器定子結構圖中可看出,偏心螺釘距離壓電蜂鳴片外圍金屬背板上三螺釘之遠近,依序為螺釘3、螺釘2及螺釘1,故當來自螺釘1之反射波動(最快達到偏心螺釘點之位置)逐漸消失後,接續產生推動轉軸旋轉的會是來自螺釘2之反射波動,而後才是來自螺釘3之反射波動,如此依序不斷地產生三個推動轉軸旋轉之交替性波動,故三相偏心薄盤式超音波致動器之正逆轉運動方向在偏心螺釘位置確認後即已確定,亦即其僅能朝單一方向轉動。在圖3中所示之三相偏心薄盤式超音波致動器,其偏心螺釘點上之轉軸運動為順時針方向旋轉,若要求轉軸運動變更為逆時針方向旋轉,則只要改變偏心螺釘點位置,讓偏心螺釘距離金屬背板上三螺釘之遠近順序為螺釘1、螺釘2及螺釘3即可達成。

由於三相偏心薄盤式超音波致動器僅能做單一方向的轉動,故其僅需單相電源驅動即可,且因其結構中之電極無須切割及交替極化,故驅動電壓之振幅極低、僅約十幾伏特(有利於應用在3C產品當中),大幅簡化了傳統超音波馬達或致動器的驅動電路設計(雙相電源驅動及100-150 V的高驅動電壓振幅)。

1 個解答

評分
  • 10 年前
    最佳解答

    As shown in Figure 3,

    from the stator structure illustration of the three-phase eccentric ultrasonic

    actuator, it could be revealed that the outer three screws at the at the metal

    back plate to the eccentric screw are screw 3, screw 2 and screw 1 in turn by

    distance. So when the reflection wave from screw 1 (the nearest position to the

    eccentric screw) gradually disappears, the followed reflection wave to drive

    the shaft to rotate is from screw 2. And then it follows the reflection wave

    from screw 3. In this order the three alternative waves to drive the shaft to

    rotate are continuously generated, so the rotation direction of this

    three-phase eccentric ultrasonic actuator are defined after the confirmation of

    the eccentric screw, and it could only rotate toward the uni-direction. In the

    three-phase thin-disc ultrasonic actuator as shown in figure 3, the shaft

    rotation on the point of the eccentric screw is clock-wise. If we want to

    change the rotation direction to CCW, we could only change to position of

    eccentric screw by adjusting the distances from the three screws on the metal

    back-plate to be in the order of screw 1, 2 and 3.

    Because the three-phase eccentric thin-disc ultrasonic actuator could

    rotate in one direction, so it only needs uni-phase electronic source to drive

    the circuit. And because we do not have to cutting the electric-pole in the

    structure and the electric-pole is alternative polarization, so the driven

    voltage is very low, just a little more than ten volts (with benefit in the

    application of 3C product). It could tremendously simplify the circuit design

    of traditional ultrasonic motor of actuator (driven by two-phase electronic

    source and high voltage amplitude of 100-150V).

    2010-05-03 16:24:50 補充:

    且因其結構中之電極無須切割及交替極化 -->改成

    And because the electric-poles in the structure do not have to be cut and do not need the alternative current (AC),

    這段的原意最好你和你老闆再討論一下,看到底是什麼意思。畢竟原文是他寫的,什麼意思他自己最清楚。我只能用猜的。

    參考資料: myself, myself
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