elliptical motion 中文意思是什麼
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Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism
超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。 -
The particle motion is elliptical retrograde in contrast to elliptical direct orbit for surface waves on water.
質點的運動是橢圓倒轉，而不是象水上的面波那樣的橢圓正轉。 -
Being a sort of new principle micromotor in the fronitier of science, the ultrasonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor
本文以這一新型電動機為研究對象，對其運行特性和控制策略進行研究，是有較重要的理論和實際意義的。 -
The sun disturbs the elliptical motion of the moon around the earth.
月球繞地球的橢圓運動受到太陽的干擾。 -
In order to realize smooth movement of mechanical system at a low velocity, the following work investigates new types of linear ultrasonic motors and antifriction technique by superposing the motor ’ s elliptical vibrating motion at the friction interface to change frictional characteristics, produce ultrasonic lubricant effect and realize active control of friction force
本文研究新型超聲波馬達，利用其產生於摩擦界面的橢圓軌跡超聲振動引起的潤滑效應和摩擦接觸行為的改變來減小摩擦力的大小，完成對摩擦力的主動控制，實現機械繫統的低速平滑運動。
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