STRUCTURE AND DISPLACEMENT ANALYSIS FOR COMPLIANT PARALLEL ROBERTS MECHANISM AND MICRO-POSITIONING STAGE
Pseudo-rigid-body model of compliant parallel four-bar mechanism and compliant Roberts mechanism was analyzed and the coupling displacement of it was compared qualitatively. Using closed loop vector method,the characteristic point position of Roberts mechanism was determined. The displacement calcul...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2015-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.06.012 |
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| Summary: | Pseudo-rigid-body model of compliant parallel four-bar mechanism and compliant Roberts mechanism was analyzed and the coupling displacement of it was compared qualitatively. Using closed loop vector method,the characteristic point position of Roberts mechanism was determined. The displacement calculation model was established considering the central shift of rotation. Compared with the simulation results of finite element,the maximum relative error of this model is only 2. 43%. The symmetrical compliant Roberts mechanism was applied on micro-motion platform,a new structure of 3- PRR micro-motion platform is proposed. Using the functional transformation theory,the input and output relational matrix was established.Compared with the experimental results,the result shows that the maximum error of angle around z axis is 5. 60%. |
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| ISSN: | 1001-9669 |