Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform

Ding, Jian; Liu, Jinguo; Zhang, Rongpeng; Zhang, Lu; Hao, Guangbo

doi:10.1016/j.mechmachtheory.2018.09.003

Cited by 10 publications

(7 citation statements)

References 29 publications

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“…NTM offers a possible solution for this problem. The essence of NTM is to determine a point-set in a sdimensioned super-cube, where the points in the set are uniformly distributed (Fang and Wang, 1994). Till now mathematicians have proposed several types of set such as Hua-Wang set (Hua and Wang, 1972), Halton set (Halton, 1960;Chi et al, 2005), Niederreiter set (Niederreiter, 1992) and Sobol set (Sobol, 1967;Bratley and Fox, 1988).…”

Section: Doe Based Tolerance Synthesis Methodologymentioning

confidence: 99%

“…They are all termed as low discrepancy sequence (LDS). The initial target of LDS aims at improving MC simulation performances, which are prevailing over the traditional pseudo-random set, then the LDS is introduced in the field of DOE, and as the basis, uniform DOE is established (Fang and Wang, 1994) with GLP-set (Hua and Wang, 1972). Uniform DOE pays more attention on distributional uniformity other than symmetrical comparability of experiment points.…”

Section: Doe Based Tolerance Synthesis Methodologymentioning

confidence: 99%

“…The uniform DOE, short for uniform design, is proposed in the 1980s by Fang and Wang (1994), and is distinct from typical orthogonal design and Latin square design. The uniform experiment points are uniformly scattered within the whole experiment space, and fewest representative experiment points can disclose most information of a system, other than the rest types of DOE.…”

Section: Doe Based Synthesis Methodologymentioning

confidence: 99%

“…Manufacturing accuracy is critical to the kinematic and dynamic performance of the L/R mechanism (Ding et al, 2018). Nowadays, lower consumption and higher performance have been always pursued for all manufacturing companies, particularly considering the current context of in- creasing global competition.…”

Section: Introductionmentioning

confidence: 99%

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Design of experiment-based tolerance synthesis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform

Ding

Liu

et al. 2019

Mech. Sci.

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Abstract. This paper deals with the tolerance synthesis with the application for a typical Lock-or-Release (L/R) mechanism, used for Chinese Space Station Microgravity Platform (SSMP). The L/R mechanism is utilized to lock the SSMP maintaining space position during the launching stage, and to release the SSMP automatically during on-orbit stage. Manufacturing accuracy of L/R mechanism presents direct influence on its kinematic and dynamic behaviors. Tolerance synthesis can provide a reasonable assignment of tolerance, satisfying the critical assembly criteria while lowering manufacturing complexity. In this paper, based on the number-theory method (NTM), a Halton-set based Monte Carlo (MC) simulation is introduced in the accuracy model of the L/R mechanism, aiming at improving analytical precision and efficiency for tolerance synthesis. A design of experiment (DOE) based tolerance synthesis approach is proposed. With initial tolerance determined by capacity, sensitivities of different tolerance factors are generated through the first DOE stage, and then applied to determine feasible tolerance levels. The final tolerance assignments, like points scatted in high-dimensioned space with inherent uniformity, are then produced through uniform DOE in the second stage. Result shows that the majority of feasible tolerance assignments generated have more relaxed tolerance, which can facilitate the manufacturing process.

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Section: Doe Based Tolerance Synthesis Methodologymentioning

confidence: 99%

Section: Doe Based Tolerance Synthesis Methodologymentioning

confidence: 99%

Section: Doe Based Synthesis Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of experiment-based tolerance synthesis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform

Ding

Liu

et al. 2019

Mech. Sci.

Self Cite

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show abstract

“…The MP is a cuboid test device located in the middle part of the MSHML, which is fixed by the L/R mechanism during the launch. When it arrives at the predetermined orbit of the space station, the L/R mechanism on both sides is driven in reverse at the same time to release the MP for scientific research [10,11]. For the special locking requirements of the MP, the locking force directly affects the locking reliability of the MP.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis and Experimental Verification of the Locking Torque of the Microgravity Platform of the Chinese Space Station

Liu

Luo

et al. 2020

Applied Sciences

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The Microgravity Platform (MP) of the Chinese Space Station is locked and released by Lock-or-Release (L/R) mechanism on both sides. In order to ensure the safety and reliability of the MP under the vibration environment during the rocket launch, the L/R mechanism must output the appropriate locking torque value. Based on the structural characteristics of the Scientific Experiment Cabinet (SEC), this paper proposes a method of evaluating locking torque by combining theory with experiment, and the relationship between locking force and locking torque of L/R mechanism is proved that the locking force on both sides can reach 2000 N at 25 Nm driving torque. Finally, it is verified by vibration test that the locking torque obtained by this method can effectively guarantee the safety and reliability of the MP under vibration environment.

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Accuracy modeling, analysis and radical error distribution of 3-RPR planar parallel mechanism

Ding

Ye²,

Yu³

et al. 2022

J Mech Sci Technol

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Accuracy modeling and analysis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform

Cited by 10 publications

References 29 publications

Design of experiment-based tolerance synthesis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform

Design of experiment-based tolerance synthesis for a lock-or-release mechanism of the Chinese Space Station Microgravity Platform

Simulation Analysis and Experimental Verification of the Locking Torque of the Microgravity Platform of the Chinese Space Station

Accuracy modeling, analysis and radical error distribution of 3-RPR planar parallel mechanism

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