TY - GEN
T1 - Damping Enhancement and Positioning Control of Compliant Stages by Incorporating Rubber Shear Dampers
AU - Yula, Yi Hsuan
AU - Lee, Kung Han
AU - Chen, Kuo Shen
AU - Liu, Yun Hui
N1 - Funding Information:
This work is supported by Ministry of Science and Technology (MOST) of Taiwan under contract numbers: MOST 104-2221-E-006-121, 105-2221-E-006-100 -MY3, 106-2221-E-218-014, 107-2218-E-006-004, and ) $ + $ $ % $%" # " $ "-(iMRC) from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan.
Publisher Copyright:
© 2018 The Society of Instrument and Control Enginners - SICE.
PY - 2018/10/15
Y1 - 2018/10/15
N2 - Metal compliant stages are critical subsystems in numerous precision motion control applications. By incorporating feedback control, their performance can be further improved. However, metals have inherently very low damping and it may difficult to add external passive dampers. Such a low damping capability would limit the effectiveness of controller design and even cause instability. As a result, how to effectively enhancing damping capability of compliant stage under space constraint is a non-trivial issue in precision positioning control. In this work, we propose the use of PDMS rubber shear damper to enhance the effective material damping of compliant structures. The effect of PDMS dimension on the resulted damping capability is then investigated by both 3D printed plastic and wire-cut metallic testing structures. The experimental results indicate that the PDMS materials can indeed enhance the damping ratios. Finally, a plastic 3D printed compliant stage is designed as a prototype for validating the design in stage control. The experimental results indicated that the controlled performance is indeed improved by incorporated with PDMS shear damper. With the concept validated, it is possible to implement rubber shear dampers in real metallic compliant structure for enhancing their performance. Ultimately, it is also possible to integrate this concept with metallic 3D printing technology to achieve light weight, high stiffness, and high damping structures.
AB - Metal compliant stages are critical subsystems in numerous precision motion control applications. By incorporating feedback control, their performance can be further improved. However, metals have inherently very low damping and it may difficult to add external passive dampers. Such a low damping capability would limit the effectiveness of controller design and even cause instability. As a result, how to effectively enhancing damping capability of compliant stage under space constraint is a non-trivial issue in precision positioning control. In this work, we propose the use of PDMS rubber shear damper to enhance the effective material damping of compliant structures. The effect of PDMS dimension on the resulted damping capability is then investigated by both 3D printed plastic and wire-cut metallic testing structures. The experimental results indicate that the PDMS materials can indeed enhance the damping ratios. Finally, a plastic 3D printed compliant stage is designed as a prototype for validating the design in stage control. The experimental results indicated that the controlled performance is indeed improved by incorporated with PDMS shear damper. With the concept validated, it is possible to implement rubber shear dampers in real metallic compliant structure for enhancing their performance. Ultimately, it is also possible to integrate this concept with metallic 3D printing technology to achieve light weight, high stiffness, and high damping structures.
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U2 - 10.23919/SICE.2018.8492683
DO - 10.23919/SICE.2018.8492683
M3 - Conference contribution
AN - SCOPUS:85056735707
T3 - 2018 57th Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2018
SP - 533
EP - 538
BT - 2018 57th Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 57th Annual Conference of the Society of Instrument and Control Engineers of Japan, SICE 2018
Y2 - 11 September 2018 through 14 September 2018
ER -