Determination of COG Based on Propagation of Positioning and Orientation Errors in Aero-Engine Rotors

Li, Ruirui; Liu, Yongmeng; Tan, Jiubin

doi:10.1109/tim.2022.3184364

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…On the other hand, many researchers studied how to characterize and analyze assembly error, where Jacobian–Torsor theory is widely used to analyze three-dimensional assembly errors in recent years. Li et al (2022) studied the ultra-precision measurement of the center of gravity of aero-engine rotor and proposed a measurement model based on the Jacobian–Torsor theory to improve the measurement accuracy in rotor assembly. Peng and Peng (2020) combined the assembly functional requirement and the functional elements of corresponding tolerances chain to derive a unified Jacobian–Torsor model.…”

Section: Introductionmentioning

confidence: 99%

Research on assembly accuracy of deployable arm based on Jacobian-Torsor model

et al. 2023

RIA

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Purpose The purpose of this study is to establish an assembly accuracy analysis model of deployable arms based on Jacobian–Torsor theory to improve the assembly accuracy. Spacecraft deployable arm is one of the core components of spacecraft. Reducing the errors in assembly process is the main method to improve the assembly accuracy of spacecraft deployable arms. Design/methodology/approach First, the influence of composite connecting rod, root joint and arm joint on assembly accuracy in the tandem assembly process is analyzed to propose the assembly accuracy analysis model. Second, a non-tandem assembly process of “two joints fixed-composite rod installed-flange gasket compensated” is proposed and analyzed to improve the assembly accuracy of deployable arms. Finally, the feasibility of non-tandem assembly process strategy is verified by assembly experiment. Findings The experiential results show that the assembly errors are reduced compared with the tandem assembly process. The errors on axes x, y and z directions decreased from 14.1009 mm, 14.2424 mm and 0.8414 mm to 0.922 mm, 0.671 mm and 0.2393 mm, respectively. The errors round axes x and y directions also decreased from 0.0050° and 0.0053° to 0.00292° and 0.00251°, respectively. Originality/value This paper presents an assembly accuracy analysis model of deployable arms and applies the model to calculate assembly errors in tandem assembly process. In addition, a non-tandem assembly process is proposed based on the model. The experimental results show that the non-tandem assembly process can improve the assembly accuracy of deployable arms.

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Section: Introductionmentioning

confidence: 99%