矩形截面梁双弯模态驱动的压电直线电机研究  

A Novel Piezoelectric Linear Motor Driven by Two Bending Vibration Modes of a Beam with Rectangular Cross-Section

作　　者：贺红林[1] 胡长胜[1] 何文从[1] 刘文光[1] 

机构地区：[1]南昌航空大学,江西南昌330063

出　　处：《南昌航空大学学报（自然科学版）》2013年第1期1-7,共7页Journal of Nanchang Hangkong University(Natural Sciences)

基　　金：国家自然科学基金(51265040);江西省教育厅科技项目(GJJ12416)

摘　　要：推出了一种以矩形截面结构梁为定子的压电直线电机。选定该梁的B06和B09弯曲模态为电机工作模态,在梁上设置了6个驱动齿以驱动电机动子;在梁的正面与背面各粘附了一层压电陶瓷PZT8,在压电陶瓷上通入超声频域电功率谐波信号以激发电机的工作模态振动,迫使驱动齿表面质点按预定轨迹运动,从而推动动子做往复直线运动。研究了电机的驱动机理,设计出电机装配结构,给出了压电陶瓷的极化与供电配置,确定了驱动齿的可行配置域,仿真了电机性能。该电机有望输出较大动力与速度,应用前景广泛。A piezoelectric linear motor powered by dual bending vibration modes of B06 and B09 of a beam with rectangular cross - section has been proposed. Six drive teeth employed to push the motor＇s slider are arranged on top of the beam ,while two layers of high performance piezoelectric ceramics are stuck on each top of the beam. Once the working vibration modes are excited by electrical sinu- soidal voltage of ultrasonic frequency applied to the piezoelectric ceramics which are polarized appropriately,the drive teeth will make the slider move forward or backward. The motor＇s assembly structure has been presented, the working principle of the motor has been described, and the mechanical properties of the motor have been simulated. It is concluded that this motor can generate larger thrust and move in higher speed and it has wide application prospect.

关 键 词：矩形截面梁 弯振模态 压电直线电机 驱动机理 

分 类 号：TM359.9[电气工程—电机]