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Research on the Piezoelectric Linear Motor and Driving Control

Author: MengYiMin
Tutor: HuangWeiQing
School: Nanjing University of Aeronautics and Astronautics
Course: Instrument Science and Technology
Keywords: Piezoelectric linear motor Laminate type piezoelectric ceramic Nonresonant Capacitive load Drive
CLC: TM359.4
Type: Master's thesis
Year: 2009
Downloads: 57
Quote: 3
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Abstract


This project comes from the National Natural Science Foundation of \Piezoelectric linear motors can be directly output linear motion , with a small , high control accuracy , no electromagnetic interference , fast response , and high energy density advantages in precision instruments and equipment , drive and control a broad application prospects . The traditional resonance piezoelectric linear motor stator in a resonant state , kinetic and thermodynamic stability issues need to be thorough and meticulous research , in order to achieve high-precision positioning . For the purpose of this paper in order to improve the stability and controllability of the piezoelectric linear motor , a new piezoelectric linear motor and driving method and experimental study . In motor principle , there is the lack of a traditional resonance type piezoelectric linear motor , made ??of a non - resonant type piezoelectric linear motor . The motor using a laminate type piezoelectric ceramic driver low voltage amplitude is large , and to maintain the characteristics of constant amplitude in a certain frequency range , driven directly by the stacked- type piezoelectric ceramic having a driving frequency proportional to the speed characteristics . Compared with the resonant motor , stable , good controllability . Motor structure , improve the the clamping structure between the traditional piezoelectric linear motor stator and mover , the design of the new holding structure of a flexible hinge . This structure can effectively limit the degree of freedom of the stator , to make it only in the perpendicular to the given direction of movement of the contact surface of the movable element , reducing the motor running in the set, the mover relative shaking, to improve the stability of the motor . Designed a method for applying the preload force of the piezoelectric ceramic and in the stator , the apparatus is simple in structure , it is possible to estimate the size of the preload . The experimental study of the characteristics of the laminated piezoelectric ceramic motor drive for characteristics of the new drive is a drive capacitive loads . The driver uses the order of 90 ° ± 15V DC power supply , output four peak-to-peak value of 80V , the phase difference of the sine wave signal . The drive to use PSoC as a core component , has strong processing capability , and laid the foundation for the realization of complex motor control algorithms .

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CLC: > Industrial Technology > Electrotechnical > Motor > A special motor > Linear motor
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