Stability of Air Floating Optical Platform Based on Optimal Tuned Liquid Column Damper

Wenhui Cui; Jianqiang Zhu; Yuanqi He; Zhigang Liu; Quantang Fan; Weiheng Lin; Ziming Dong

doi:10.3788/AOS202141.2122001

Acta Optica Sinica, Volume. 41, Issue 21, 2122001(2021)

Stability of Air Floating Optical Platform Based on Optimal Tuned Liquid Column Damper

Wenhui Cui^1,2、*, Jianqiang Zhu^1、**, Yuanqi He^1,2, Zhigang Liu¹, Quantang Fan¹, Weiheng Lin^1,2, and Ziming Dong¹

¹Joint Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²University of Chinese Academy of Sciences, Beijing 100049, China

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Figures & Tables(13)

Fig. 1. ZDT series air floating pendulum isolation optical platform

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Fig. 2. Fluid-structure coupling system of air floating optical platform with tuned liquid column damper. (a) Embedded TLCD air floating optical platform; (b) trial TLCD air floating optical platform

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Fig. 3. Structure of tuned liquid column damper

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Fig. 4. Relationship between natural frequency of TLCD and different parameters

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Fig. 5. Vibration reduction control model of fluid-structure coupling system of TLCD air floating optical platform

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Fig. 6. Relationship between displacement amplification coefficient of air floating optical platform and various factors. (a) When ϕ=0.95, variation curves with frequency ratio ω/ω_s and TLCD damping ratio ξ_d; (b) when ϕ=1.00, variation curves with frequency ratio ω/ω_s and TLCD damping ratio ξ_d; (c) when ϕ=1.05, variation curves with frequency ratio ω/ω_s and TLCD damping ratio ξ_d; (d) parameter optimization curves of TLCD damping ratio ξ_d when with different ϕ values

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Fig. 7. Analysis of time-domain response characteristics of air floatation optical platform. (a) Slope excitation response; (b) harmonic excitation response

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Fig. 8. Optical path system of lens focusing experiment

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Fig. 9. Experimental analysis results of focusing lens with different ϕ values in ZEMAX software and comparison of its effects in three cases. (a) ϕ=0.95; (b) ϕ=1.00; (c) ϕ=1.05; (d) comparison of effects of Fig.(a)-(c)

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Fig. 10. TLCD control experimental system

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Fig. 11. Comparative experimental analysis of random response of air floatation optical platform. (a) Comparison curves of time domain response without control and TLCD control; (b) comparison curves of acceleration frequency domain response without control and TLCD control; (c) comparison curves of velocity frequency domain response without control and under TLCD control; (d) comparison curves of displacement response in frequency domain without control and under TLCD control

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Table 1. Vibration reduction efficiency after optimization of damping ratio parameters in TLCD under different natural frequency ratios

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Table 1. Vibration reduction efficiency after optimization of damping ratio parameters in TLCD under different natural frequency ratios

ξ_d	T_main\|_ϕ₌₀_.₉₅	η_0.95 /%	T_main\|_ϕ₌₁_.₀₀	η_1.00 /%	T_main\|_ϕ₌₁_.₀₅	η_1.05 /%
0.01	33.62	32.76	29.73	40.54	39.88	20.24
0.02	28.04	43.92	22.27	55.46	34.60	30.80
0.03	24.79	50.42	18.98	62.04	30.85	38.30
0.04	22.84	54.32	17.33	65.34	28.19	43.62
0.05	21.63	56.74	16.62	66.76	26.31	47.38
0.06	20.87	58.26	17.02	65.96	26.23	47.54
0.07	20.76	58.48	17.78	64.44	26.08	47.84
0.08	21.31	57.38	18.90	62.20	26.08	47.84
Without TLCD	T_main=50

Table 2. Experimental results of random response control of air floatation optical platform at 0.25 Hz excitation frequency
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Table 2. Experimental results of random response control of air floatation optical platform at 0.25 Hz excitation frequency
Parameter Uncontrolled (NC) TLCD control Damping efficiency /%
Acceleration /(m·s^-2) 0.06009 0.01668 72.24
Velocity /(m·s^-1) 0.03825 0.01189 68.91
Displacement/m 0.02435 0.00757 68.91

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Wenhui Cui, Jianqiang Zhu, Yuanqi He, Zhigang Liu, Quantang Fan, Weiheng Lin, Ziming Dong. Stability of Air Floating Optical Platform Based on Optimal Tuned Liquid Column Damper[J]. Acta Optica Sinica, 2021, 41(21): 2122001

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Paper Information

Category: Optical Design and Fabrication

Received: May. 17, 2021

Accepted: May. 29, 2021

Published Online: Nov. 17, 2021

The Author Email: Cui Wenhui (whcui@siom.ac.cn), Zhu Jianqiang (jqzhu@siom.ac.cn)

DOI:10.3788/AOS202141.2122001

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Vibration reduction efficiency after optimization of damping ratio parameters in TLCD under different natural frequency ratios

Table 1. Vibration reduction efficiency after optimization of damping ratio parameters in TLCD under different natural frequency ratios

Table 2. Experimental results of random response control of air floatation optical platform at 0.25 Hz excitation frequency

Table 2. Experimental results of random response control of air floatation optical platform at 0.25 Hz excitation frequency