National and University Library, Ljubljana (NUK)
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Study of stability of precise tiled-grating deviceYunfei, Liao ...To satisfy the high-stability requirement of a tiled grating, we have analyzed and optimized the stability of a newly designed precise tiled- grating device considering three aspects: structure ... design, transmission chain, and control algorithms. The main structure of the device is changed from a parallel-board structure to a new tetrahedral brace design, enhancing the overall vibration stability; during the analysis of the transmission chain, the adjustment accuracy and stability of the device were ensured by slowing the growth of the error transmission factor; and for the optimization analysis of the PID control algorithms, we adopted a latch compensation method to avoid the saturated loss and a four-point central difference method to avoid the disturbances, thus enhancing the stability control of the device. To test the stability of the device, an optical experiment with a reference spot was designed. The experimental results showed that over 380 s, the ambient excitation response was always within an acceptable range. The average deflections about the X axis and Y axis are 0.243 and 0.00146 [micro]rad, respectively, which satisfy the stability requirement.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 61, no. 2, Feb. 2015, str. 99-106, SI 20)Type of material - article, component partPublish date - 2015Language - englishCOBISS.SI-ID - 13895195
Author
Yunfei, Liao |
Yi, Zhou |
Youhai, Liu |
Dong, Zuo |
Bo, Tan
Topics
kompresorji z deljeno mrežico |
stabilnost |
dinamični odziv |
tetraeder |
prenosne verige |
krmilni algoritmi
source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 61, no. 2, Feb. 2015, str. 99-106, SI 20)
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Yunfei, Liao | |
Yi, Zhou | |
Youhai, Liu | |
Dong, Zuo | |
Bo, Tan |
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