Liangguo He, Fengyu Liu, An Qian, Zheng Huang, Haitao Tian, Zhikai Wan
{"title":"Asymmetric clamping and backsliding suppression in linear piezoelectric motors via harmonic synthesis with multichannel signals","authors":"Liangguo He, Fengyu Liu, An Qian, Zheng Huang, Haitao Tian, Zhikai Wan","doi":"10.1016/j.ymssp.2025.113416","DOIUrl":null,"url":null,"abstract":"<div><div>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 V<sub>p-p</sub> 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 V<sub>p-p</sub> 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.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"240 ","pages":"Article 113416"},"PeriodicalIF":8.9000,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanical Systems and Signal Processing","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0888327025011173","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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