双足压电电机的驱动与控制技术

发布时间：2018-04-26 09:24

本文选题：叠层压电陶瓷 + 双足压电直线电机　；参考：《南京航空航天大学》2014年硕士论文

【摘要】：根据叠层压电陶瓷的容性特性以及本课题组设计的正交耦合式和三角转换式两种双足非共振压电直线电机的工作机理,设计了线性运放跟随式和开关式两种驱动电路。另外设计了RS-232电平与TTL电平的转换电路,并使用Matlab编写了人机控制界面,在控制界面上操作按键即可让计算机作为上位机给PSoC3发送指令来控制电机的运行状况。本文的内容主要包括以下5个方面:(1)概述了压电直线电机及其应用现状,对当前叠层压电陶瓷的驱动模式和压电直线电机的驱动及控制技术进行了总结,并分析了现有驱动及控制技术的不足。(2)分析了PT0707型号的叠层压电陶瓷的动态输出特性,介绍了本课题组设计的正交耦合式和三角转换式两种双足压电直线电机的结构及其工作机理,并提出了驱动控制器的设计要求。(3)设计了线性运放跟随式和开关式两种驱动电路,详细描述了线性运放跟随式驱动电路的信号发生器、电压及功率放大电路和可调直流稳压电源三个组成部分的设计过程,并阐述了开关管驱动电路的自举升压原理以及PWM驱动信号的产生过程。(4)描述了电机的控制流程,并对线性运放跟随式和开关式驱动电路的调压、调频、启停控制以及正反运行的控制方法进行了研究。使用UART模块实现PC机与PSoC3的通信,并用Matlab进行了人机控制界面的编写,便于控制电机运行。(5)对两种驱动电路分别进行了波形产生实验,线性运放跟随式驱动电路可以输出4组相差90°带正向偏置的正弦波/方波/三角波信号,开关式驱动电路能够输出4组相差90°的方波信号,它们均可以实现电压和频率的独立调节。最后对两种电机进行了综合实验验证,验证了驱动控制器的实用性。
[Abstract]:According to the capacitive characteristics of laminated piezoelectric ceramics and the working mechanism of two kinds of biped non-resonant piezoelectric linear motors designed by our team, two kinds of driving circuits are designed: linear operational amplifier follower and switch type. In addition, the conversion circuit between RS-232 level and TTL level is designed, and the man-machine control interface is written with Matlab. The computer can send instructions to PSoC3 as the host computer to control the running condition of the motor by operating the keys on the control interface. The main contents of this paper include the following five aspects: 1) the piezoelectric linear motor and its application status are summarized. The driving mode of the laminated piezoelectric ceramic and the drive and control technology of the piezoelectric linear motor are summarized. The dynamic output characteristics of PT0707 type laminated piezoelectric ceramics are analyzed. This paper introduces the structure and working mechanism of two kinds of biped piezoelectric linear motor designed by our group. The design requirements of the driving controller are also put forward. Two kinds of driving circuits, linear operational amplifier follower and switch type, are designed. The design process of signal generator, voltage and power amplifier circuit and adjustable DC steady voltage power supply are described in detail. The bootstrap principle of the drive circuit and the generating process of the PWM driving signal are described. The control flow of the motor is described. The voltage regulation and frequency modulation of the linear operational amplifier follower and the switched drive circuit are also given. The starting and stopping control and the control method of positive and negative operation are studied. The communication between PC and PSoC3 is realized by using UART module, and the man-machine control interface is compiled by Matlab, which is convenient to control motor running. Four sets of sinusoidal / square / triangular wave signals with 90 掳difference of forward bias can be output by the following driving circuit of linear operational amplifier, and four sets of square wave signals with 90 掳difference can be output by the switched drive circuit. Both of them can realize independent regulation of voltage and frequency. Finally, the two kinds of motors are verified by comprehensive experiments, and the practicability of the drive controller is verified.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM35

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