# 拜託幫幫忙~機械領域英文 一小段~~20點 老闆追殺ing

### 3 個解答

• 1 0 年前
最佳解答

2010-05-05 22:30:20 補充：

你的點數還是留著慢慢用吧！你只剩65點了。

2010-05-07 00:01:20 補充：

At the piezoelectric metal back-plate, three

screws with 2mm diameter are mounted separately at the angle of 60°-120°-180°, and the position of the screw 3 is used to be

the driven point of direct contact point, by which it will replace the shaft

that pass through the center of the piezoelectric plate in the single phase

thin-disc ultrasonic actuator. Because the screw is a fix point, and it will

becomes a reflection point at the progressing of the wave, and based on

the different distance from screw 1 and 2 to screw 3 separately, so when the

progressing waves to screw 1 and 2 along the radical direction and the

curve-direction will form a wave with time difference when they arrive the

position of screw 3. And the design concept of two-phase thin-disc ultrasonic

actuator is to use this alternative wave to achieve the rotation result on the shaft at the

position of screw 3. In Figure 2, the position of screw 1 and 2 will have the

same alternative wave from other two screws, but the measured rotation speeds

that we place shaft at the position of screw 1 and 2 are less than the rotation

speed that we place the shaft at the position of screw 3, so we can define

screw 3 as the driven position of the shaft of two-phase thin-disc ultrasonic

actuator, and the meaning named “two-phase” is that each pulse wave input will

have two alternative waves to drive the shaft to rotate. But the different CW

or CCW direction of the wave along curve-direction from screw 1 and 2 will

affect will influence the rotation direction of the shaft, so two-phase

thin-disc ultrasonic actuator is similar to the single-phase ultrasonic

actuator and not easy to control the motion of the rotation

direction to CW or CCW.

2010-05-07 00:02:37 補充：

這問題怎麼和Yun的問題很像，你們是同學嗎？

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• 匿名使用者
1 0 年前

那可否請你複製上來呢? 我想給你最佳解答! 謝謝

2010-05-06 10:20:43 補充：

呵呵~可是問題都問了，就算移除也要扣點數阿~所以你就放上來吧~感謝!

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• 1 0 年前

Department of phase as shown in Figure 2, thin disc ultrasonic actuator stator structure diagram cum fluctuations [1], the piezoelectric buzzer metal back on the 60 ° -120 ° -180 ° angle of pitch of the respective lock 2 mm in diameter on the screw 3 (see Figure 2, 1,2,3 markings), in which the location of screw 3 to be as direct contact with the drive shaft points to replace the single-phase thin disc directly to actuator throughout the piezoelectric buzzer center shaft. As the screw is a fully stationary point, the wave propagation process will form a reflection of its points, and based on screw to screw 3 of the 1,2-distance travel is not the same, so when the radial arc of longing and outside transfer to the screw 1 and 2 traveling wave (of course, will pass to the screw 3) in the reflection process, the location in the screw 3, the formation of a time difference of the fluctuations (the same screws 1,2 have the same effect), while the phase thin disc to actuator design principle is the turn of this volatility, to promote the position of the screw shaft 3 can rotate effect.

In Figure 2, the location of screws 1,2 have the same two screws from the fluctuations caused by alternating, but placed in the screw shaft by 1,2-measured speed is lower than those in position of screw 3 (screw 2,3 on the screw 1 and will not form an alternative volatility; and screw two screws 1,3 of the generated alternating fluctuations of 30 ° angle is much smaller than the screws 1,2 of the screw 3 of the 90 ° angle), so We clearly define the screw three phase thin disc ultrasonic actuator shaft drive positions, the name meaning for the two-phase pulse signal in each input shaft rotation will be the turn of the two push volatility. As the screw 1 and 2 from the arc to the fluctuations in the clockwise or counterclockwise, will affect the axis of rotation is reversed, so dual-phase thin ultrasonic actuator disc with single-phase

參考資料： 自己
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