CAJ | 학술논문

提出一种新型的可直线运动的压电陶瓷驱动器.驱动器选用圆环形的压电陶瓷(PZT4),其外径10 mm,内径4.5 mm,厚0.8 mm,陶瓷表面均匀分成4个扇形电极区,以"正、正、负、负"沿厚度方向极化.该驱动器定子采用棒板结合式结构,一个中轴的两端分别连接了两个对称的圆形平板,圆板与中轴相互垂直.两片陶瓷分别粘接在定子的两圆形平板外侧,对定子激振形成两圆平板的交替式跨步直线运动.驱动器整体外径12 mm,长度10.6 mm.采用有限元方法对驱动器的运动模态进行了仿真,通过谐响应分析计算了驱动器在X向和Y向的振幅,分析了驱动器的运行原理.实验结果表明:驱动器最佳工作频率在13.15 kHz左右,驱动电压100 Vo-p时驱动器的最高运行速度为34 mm/s.该驱动器在小载荷、高精度精密定位等场合具有很好的实用化前景.
제출일충신형적가직선운동적압전도자구동기.구동기선용원배형적압전도자(PZT4),기외경10 mm,내경4.5 mm,후0.8 mm,도자표면균균분성4개선형전겁구,이"정、정、부、부"연후도방향겁화.해구동기정자채용봉판결합식결구,일개중축적량단분별련접료량개대칭적원형평판,원판여중축상호수직.량편도자분별점접재정자적량원형평판외측,대정자격진형성량원평판적교체식과보직선운동.구동기정체외경12 mm,장도10.6 mm.채용유한원방법대구동기적운동모태진행료방진,통과해향응분석계산료구동기재X향화Y향적진폭,분석료구동기적운행원리.실험결과표명:구동기최가공작빈솔재13.15 kHz좌우,구동전압100 Vo-p시구동기적최고운행속도위34 mm/s.해구동기재소재하、고정도정밀정위등장합구유흔호적실용화전경.
This paper proposes a new type of linear piezoelectric actuator. The ring-shaped piezoelectric ceramics (PZT4) are used in this actuator and their outer diameter is 10 mm, inner diameter 4.5 mm and thickness 0.8 mm. Each ceramic is equally divided into four fan-shaped areas and polarized along thickness direction with "+, +, -, -" type. The stator of the actuator has a structure similar to the disk-pivot,which has a shaft connecting two symmetrical disks together. Two ceramic discs are bonded onto the outboard surface of the stator. Under the resonant mode, the step vibration can be excited by the warping vibration of the ceramics. The outer diameter of the actuator is 12 mm, and the length is 10.6 mm. The vibration modes were analyzed using the finite element method. Through the harmonic analysis, the vibration amplitude of the actuator was calculated and the operation principle was analyzed. The actuator's performance was experimentally tested. Results showed that the working frequency is 13.15 kHz. Under the 100 Vo-p driving voltage, the maximum speed was measured as 34 mm/s, and it has good prospect in the fields of the precision positioning.