基于多路信号谐波合成的线性压电电机非对称箝位和反滑抑制

IF 8.9 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Liangguo He, Fengyu Liu, An Qian, Zheng Huang, Haitao Tian, Zhikai Wan
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引用次数: 0

摘要

提出了一种基于谐波合成的非对称夹持双振子惯性冲击线性压电电机。电机具有多种工作模式,以满足高速精确定位和稳定控制的要求。通过调节振子的谐振频率比为1:3,实现近似机械方波合成。近似机械方波驱动比单相谐波和方波电信号驱动具有更好的驱动能力和更高的输出速度;动力分别提高14%和25%,速度分别提高27%和44%。通过向双振子输入反向激励信号,电机在一个周期内产生两次步进运动,避免了反向运动。通过动力学仿真验证了该驱动原理的可行性。同时搭建了实验平台,对样机进行了性能测试,并对其多种模式下的性能进行了比较。实验结果表明,当合成方波基频电压为120 Vp-p,频率为324 Hz时,电机在一阶反向模式下的最大转速可达33.965 mm/s。一阶共向模式下最大负载为250 g,二阶反向模式下可实现高精度反向运动,最大速度为3.36 mm/s,位移分辨率为1.72 μm。当合成方波基频电压为80 Vp-p,频率为50 Hz时,电机样机可以在准静态状态下工作,最高位移分辨率为0.8 μm。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Asymmetric clamping and backsliding suppression in linear piezoelectric motors via harmonic synthesis with multichannel signals
This study proposes an asymmetric clamping dual-vibrator inertial impact linear piezoelectric motor on the basis of harmonic synthesis. The motor has multiple working modes to meet the requirements of high-speed precise positioning and stable control. Approximate mechanical square wave synthesis is realized by adjusting the resonant frequency ratio of the vibrator to 1:3. Approximate mechanical square wave driving can result in better driving ability and higher output speed compared with single harmonic and square wave electrical signal driving; the driving force is increased by 14 % and 25 %, and the speed is increased by 27 % and 44 %, respectively. By feeding the reverse excitation signal to the double vibrators, the motor produces two stepping motions in one cycle to avoid backward motion. The feasibility of the driving principle is proven by dynamics simulation. Meanwhile, an experimental platform is set up to test the performance of the motor prototype, and the performance of its multiple modes are compared. Experimental results show that when the synthetic square wave base frequency voltage is 120 Vp-p and the frequency is 324 Hz, the maximum speed of the motor can reach 33.965 mm/s in the first-order reverse mode. The maximum load is 250 g in the first-order codirectional mode, and high-precision reverse motion can be realized in the second-order reverse mode, with a maximum speed of 3.36 mm/s and a displacement resolution of 1.72 μm. When the synthetic square wave base frequency voltage is 80 Vp-p and the frequency is 50 Hz, the motor prototype can work in a quasi-static state and achieve the highest displacement resolution of 0.8 μm.
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来源期刊
Mechanical Systems and Signal Processing
Mechanical Systems and Signal Processing 工程技术-工程:机械
CiteScore
14.80
自引率
13.10%
发文量
1183
审稿时长
5.4 months
期刊介绍: Journal Name: Mechanical Systems and Signal Processing (MSSP) Interdisciplinary Focus: Mechanical, Aerospace, and Civil Engineering Purpose:Reporting scientific advancements of the highest quality Arising from new techniques in sensing, instrumentation, signal processing, modelling, and control of dynamic systems
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