Article(id=1263881612371026693, tenantId=1146029695717560320, journalId=1263187878914834467, issueId=1263881604263437054, articleNumber=null, orderNo=null, doi=10.16578/j.issn.1004.2539.2026.01.016, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1744300800000, receivedDateStr=2025-04-11, revisedDate=1748016000000, revisedDateStr=2025-05-24, acceptedDate=null, acceptedDateStr=null, onlineDate=1779262458173, onlineDateStr=2026-05-20, pubDate=1768406400000, pubDateStr=2026-01-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1779262458173, onlineIssueDateStr=2026-05-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1779262458173, creator=13041195026, updateTime=1779262458173, updator=13041195026, issue=Issue{id=1263881604263437054, tenantId=1146029695717560320, journalId=1263187878914834467, year='2026', volume='50', issue='1', pageStart='1', pageEnd='191', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1779262456241, creator=13041195026, updateTime=1779263107607, updator=13041195026, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1263884336399528882, tenantId=1146029695717560320, journalId=1263187878914834467, issueId=1263881604263437054, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1263884336403723187, tenantId=1146029695717560320, journalId=1263187878914834467, issueId=1263881604263437054, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=126, endPage=132, ext={EN=ArticleExt(id=1263881614086497037, articleId=1263881612371026693, tenantId=1146029695717560320, journalId=1263187878914834467, language=EN, title=Two-stage amplification mechanism based on flexible hinges, columnId=1263881613436379916, journalTitle=Journal of Mechanical Transmission, columnName=Design·Calculation, runingTitle=null, highlight=null, articleAbstract=
Objective A novel two-stage compound amplification mechanism design scheme was proposed to address the friction and clearance issues inherent in traditional revolute pairs within the large stroke design of micro-displacement platforms. The aim was to achieve high-precision and significant stroke displacement amplification through structural innovation.
Methods Utilizing the theory of material mechanics, a static model was established. A two-stage compound amplification structure that integrated a flexible hinge lever amplification mechanism with a bridge amplification mechanism was employed. Piezoelectric ceramics served as the driving source, and a parameter optimization model was developed using Matlab software. The impact of key structural parameters on both the amplification ratio and input stiffness was systematically analyzed to identify the optimal parameter combination. The optimized structure underwent validation through multi-physical field simulation via finite element analysis.
Results Following optimization, the mechanism attains an impressive displacement amplification ratio of 13.1 times, with its natural frequency reaching 92.2 Hz. The maximum discrepancies between theoretical calculations and simulation results of the amplification ratio and natural frequency are recorded at 2.4% and 3.5%, respectively, thereby demonstrating the feasibility of this structural design.
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目的 为解决微位移平台大行程设计中传统转动副存在的摩擦与间隙问题,提出一种新型二级复合放大机构设计方案,旨在通过结构创新实现高精度、大行程的位移放大效果。
方法 基于材料力学理论建立静力学模型;采用柔性铰链杠杆放大机构与桥式放大机构相结合的二级放大结构,以压电陶瓷为驱动源,通过Matlab软件建立参数优化模型;系统分析关键结构参数对放大比例和输入刚度的影响规律,确定最优参数组合;采用有限元分析方法对优化后的结构进行多物理场仿真验证。
结果 优化后,机构实现了13.1倍位移放大比例,固有频率达92.2 Hz;放大比例、固有频率的理论计算与仿真结果的最大误差分别为2.4%、3.5%,证明了结构的可行性。
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136:106473., articleTitle=A novel amplification ratio model of a decoupled XY precision positioning stage combined with elastic beam theory and Castigliano’s second theorem considering the exact loading force, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1263881628502319981, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, xref=null, ext=[AuthorCompanyExt(id=1263881628548457326, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, companyId=1263881628502319981, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan250101, China), AuthorCompanyExt(id=1263881628670092144, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, companyId=1263881628502319981, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=山东建筑大学 机电工程学院,济南250101)])], figs=[ArticleFig(id=1263881647020172283, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.1, caption=
Two-stage amplification mechanism, figureFileSmall=MlezOFB+HMvcI3lXoJAMvw==, figureFileBig=CCBNWiriK277se3GLxN9Gw==, tableContent=null), ArticleFig(id=1263881647796118527, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图1, caption=
二级放大机构, figureFileSmall=MlezOFB+HMvcI3lXoJAMvw==, figureFileBig=CCBNWiriK277se3GLxN9Gw==, tableContent=null), ArticleFig(id=1263881649243152391, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.2, caption=
Two-stage amplification mechanism based on flexible hinges, figureFileSmall=eItS07JC3yhqd8voxcptZA==, figureFileBig=ARKr7d9zqYPdu/0PjGqdxg==, tableContent=null), ArticleFig(id=1263881650002321422, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图2, caption=
基于柔性铰链的二级放大机构, figureFileSmall=eItS07JC3yhqd8voxcptZA==, figureFileBig=ARKr7d9zqYPdu/0PjGqdxg==, tableContent=null), ArticleFig(id=1263881651998810128, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.3, caption=
Double-bridge arm, figureFileSmall=fkSwyq21NUXHx5xsh5c/gA==, figureFileBig=8gVDlhjVGQIQWTxDTsiiQA==, tableContent=null), ArticleFig(id=1263881652523098131, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图3, caption=
双桥臂, figureFileSmall=fkSwyq21NUXHx5xsh5c/gA==, figureFileBig=8gVDlhjVGQIQWTxDTsiiQA==, tableContent=null), ArticleFig(id=1263881653009637398, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.4, caption=
Pseudo rigid body model of the lever amplification mechanism, figureFileSmall=EMxOfSnWQSVOCfhDT5GCHg==, figureFileBig=xFDjE7+OdLslsF1Eoo4NQw==, tableContent=null), ArticleFig(id=1263881653701697568, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图4, caption=
杠杆放大机构伪刚体模型, figureFileSmall=EMxOfSnWQSVOCfhDT5GCHg==, figureFileBig=xFDjE7+OdLslsF1Eoo4NQw==, tableContent=null), ArticleFig(id=1263881654527975466, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.5, caption=
Effect curves of parameters of the two-stage amplification mechanism on amplification ratio R and input stiffness K, figureFileSmall=zd+GbQ4Ehu1sShzk84Oabw==, figureFileBig=5/+LyoI9+8S1vKxS6jZFkg==, tableContent=null), ArticleFig(id=1263881656167948335, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图5, caption=
二级放大机构各参数对放大比例与输入刚度的影响曲线, figureFileSmall=zd+GbQ4Ehu1sShzk84Oabw==, figureFileBig=5/+LyoI9+8S1vKxS6jZFkg==, tableContent=null), ArticleFig(id=1263881656629321785, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.6, caption=
Grid division, figureFileSmall=IrIZF7Mii1inwXIH1YEAAQ==, figureFileBig=8Dto1JlWRL0Nxa8RHf42jw==, tableContent=null), ArticleFig(id=1263881657120055360, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图6, caption=
网格划分, figureFileSmall=IrIZF7Mii1inwXIH1YEAAQ==, figureFileBig=8Dto1JlWRL0Nxa8RHf42jw==, tableContent=null), ArticleFig(id=1263881657849864262, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.7, caption=
Deformation of the two-stage amplification mechanism under load, figureFileSmall=NHR/3qw1RYpHI+8FZsAj0A==, figureFileBig=+B0z2ioqCOhAuKPICQrL4A==, tableContent=null), ArticleFig(id=1263881658265100367, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图7, caption=
二级放大机构负载下变形, figureFileSmall=NHR/3qw1RYpHI+8FZsAj0A==, figureFileBig=+B0z2ioqCOhAuKPICQrL4A==, tableContent=null), ArticleFig(id=1263881658395123796, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.8, caption=
Deformation of the two-stage amplification mechanism, figureFileSmall=IzMHk67LxBqSUdVTMSjesA==, figureFileBig=AcfwC+hmymEksSQSO4zoUQ==, tableContent=null), ArticleFig(id=1263881659129127003, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图8, caption=
二级放大机构变形, figureFileSmall=IzMHk67LxBqSUdVTMSjesA==, figureFileBig=AcfwC+hmymEksSQSO4zoUQ==, tableContent=null), ArticleFig(id=1263881661008175204, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.9, caption=
Stress distribution diagram of the two-stage amplification mechanism, figureFileSmall=XslqStm0WBprLi+sYvw2YQ==, figureFileBig=RkAt3PsOmUI+ECywPfNIEA==, tableContent=null), ArticleFig(id=1263881661238861931, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图9, caption=
二级放大机构应力分布图, figureFileSmall=XslqStm0WBprLi+sYvw2YQ==, figureFileBig=RkAt3PsOmUI+ECywPfNIEA==, tableContent=null), ArticleFig(id=1263881661691846768, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Fig.10, caption=
1st-order mode of the two-stage amplification mechanism, figureFileSmall=khBn8QyH7U2VhEI47NXuzg==, figureFileBig=qNz5c2eb/hdwRcR25uSCWQ==, tableContent=null), ArticleFig(id=1263881662471987323, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=图10, caption=
二级放大机构1阶模态, figureFileSmall=khBn8QyH7U2VhEI47NXuzg==, figureFileBig=qNz5c2eb/hdwRcR25uSCWQ==, tableContent=null), ArticleFig(id=1263881662572650624, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Tab. 1, caption=
Parameters before and after optimization
, figureFileSmall=null, figureFileBig=null, tableContent=
| r | t | b | | | | |
|---|
| 优化前 | 3 | 0.5 | 20 | 34.5 | 3 | 43.5 | 40.5 |
| 优化后 | 3 | 0.5 | 6 | 30 | 2.1 | 39 | 36 |
), ArticleFig(id=1263881663008858244, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=表1, caption=
优化前后参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| r | t | b | | | | |
|---|
| 优化前 | 3 | 0.5 | 20 | 34.5 | 3 | 43.5 | 40.5 |
| 优化后 | 3 | 0.5 | 6 | 30 | 2.1 | 39 | 36 |
), ArticleFig(id=1263881663721889930, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Tab. 2, caption=
Physical parameters of 7075Al
, figureFileSmall=null, figureFileBig=null, tableContent=
| 弹性模量/GPa | 屈服强度/MPa | 泊松比 | 密度/(kg/m3) |
|---|
| 71.7 | 503 | 0.33 | 2 810 |
), ArticleFig(id=1263881665412194449, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=表2, caption=
7075Al物理参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 弹性模量/GPa | 屈服强度/MPa | 泊松比 | 密度/(kg/m3) |
|---|
| 71.7 | 503 | 0.33 | 2 810 |
), ArticleFig(id=1263881666246860953, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=EN, label=Tab. 3, caption=
Specific values before and after amplification
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 优化前 | 优化后 |
|---|
| 理论计算 | 仿真 | 误差/% | 理论计算 | 仿真 | 误差/% |
|---|
| 放大比例 | 11.1 | 10.8 | 2.7 | 13.1 | 12.8 | 2.4 |
| 参数 | 优化前 | 优化后 |
理论计 算/MPa | 仿真/MPa | 误差/% | 理论计 算/MPa | 仿真/MPa | 误差/% |
| 最大应力 | 50.4 | 47.3 | 6.5 | 51.9 | 55.1 | 6.5 |
| 参数 | 优化前 | 优化后 |
理论计 算/Hz | 仿真/Hz | 误差/% | 理论计 算/Hz | 仿真/Hz | 误差/% |
| 固有频率 | 96.0 | 91.7 | 4.7 | 95.4 | 92.2 | 3.5 |
), ArticleFig(id=1263881667496763553, tenantId=1146029695717560320, journalId=1263187878914834467, articleId=1263881612371026693, language=CN, label=表3, caption=
放大前后具体数值
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | 优化前 | 优化后 |
|---|
| 理论计算 | 仿真 | 误差/% | 理论计算 | 仿真 | 误差/% |
|---|
| 放大比例 | 11.1 | 10.8 | 2.7 | 13.1 | 12.8 | 2.4 |
| 参数 | 优化前 | 优化后 |
理论计 算/MPa | 仿真/MPa | 误差/% | 理论计 算/MPa | 仿真/MPa | 误差/% |
| 最大应力 | 50.4 | 47.3 | 6.5 | 51.9 | 55.1 | 6.5 |
| 参数 | 优化前 | 优化后 |
理论计 算/Hz | 仿真/Hz | 误差/% | 理论计 算/Hz | 仿真/Hz | 误差/% |
| 固有频率 | 96.0 | 91.7 | 4.7 | 95.4 | 92.2 | 3.5 |
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