Accuracy analysis of spatial multi-loop mechanism effected by paired bearings support joint clearance

Lin, Fanglei; Chen, Chuanzhi; Chen, Jinbao; Chen, Meng

doi:10.1007/s12206-020-0202-8

Cited by 8 publications

(6 citation statements)

References 45 publications

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“…The joints of the support structure are all PBS-joints. According to the analysis of Lin et al, 20 the deviation configuration of PBS-joint can be described as: (1) the offset static (the shaft axis is parallel to the axis of outer-ring), (2) deflection static (the shaft axis intersects with the axis of outer-ring), as shown in Figure 8.…”

Section: D Model Of Joint Clearancementioning

confidence: 99%

“…The basic loop shown in Figure 6 is the same as the calculation case studied in literature, 20 so the calculation method in it is still adopted for analysing the deviation configuration of the basic loop. The analysis process is as follows:…”

Section: Deviation Configuration Analysis Of Basic Loopmentioning

confidence: 99%

“…In addition, the accuracy analysis solutions for serial, 21,22 single-loop, 23,24 general parallel, 25–28 planar multi-loop, 7,29,30 and simple spatial multi-loop mechanisms 20 need to solve the variables directly from constraint equation. However, the support structure is a complex spatial mechanism with multi-loop coupled each other, which belongs to the spatial multi-loop coupled mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…The 3D clearance model can describe the spatial characteristics of joint deviation, though geometric construction of joints model of cylinder shell and shaft as general research objects as shown in Figure 3 10 and Figure 4, 13 is significantly different from the paired bearings support joint (PBS-joint) where used in the support structure, as shown in Figure 5. According to the study of PBS-joint clearance by Lin et al, 20 for the mechanism with 3D motion trajectory, the simplification of PBS-joint into plane-joint will cause serious deviation of precision estimation results.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Precision estimation of large space-borne parabolic antenna support structure

Chen

Lin

et al. 2022

Advances in Mechanical Engineering

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An accuracy analysis approach – mosaic equivalence approach which is based on the principle of approximate structure substitution, to a large complex spatial mechanism with three-dimensional (3D) paired bearings support joint (PBS-joint) clearance is presented to effectively estimate the support structure precision of large parabolic space-borne antenna. The analysis suggests when all the PBS-joints equipped with Metric 628/6 bearings in standard clearance, the surface precision of support structure can obtain relatively high accuracy with a 99.73% probability that root mean square (RMS) was kept in (0.3275, 0.7673) mm and peak-to-valley (PV) was kept in (0.8806, 1.8178) mm. The solution of deviation configuration under a large complex spatial mechanism using the proposed mosaic equivalence approach can be transformed into that under a mosaiced structure of its simple sub-mechanisms. As a result, the high-dimensional coupling between the deviation configuration decision variables can be effectively avoided. Besides, the constraint equations of large complex mechanisms with the PBS-joint 3D clearance can be simplified. This method lays a foundation for reducing the manufacturing cost and risk of large-diameter, high-precision satellite antennas. It has essential engineering value.

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Section: D Model Of Joint Clearancementioning

confidence: 99%

Section: Deviation Configuration Analysis Of Basic Loopmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Precision estimation of large space-borne parabolic antenna support structure

Chen

Lin

et al. 2022

Advances in Mechanical Engineering

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“…Zhao analyzed the effect of link deviation and joint clearance on the angle error of the radar antenna deployment mechanism, and proposed a mechanism for adjusting the angle error [21]. Based on the Denavit-Hartenberg method and geometric closure conditions, Lin analyzed the accuracy of spatial multi-loop mechanism effected by paired bearings support joint clearance [22]. As a typical open-loop control system, the accumulation of errors will have a greater impact on the driving trajectory.…”

Section: Introductionmentioning

confidence: 99%

Design and error compensation of active mechanically automated guided vehicle

Yan

Chen

2021

Mechanics & Industry

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To reduce the navigation control cost, this paper proposes a mechanical guidance control scheme that uses a cam-link mechanism as a steering control mechanism for an automated guided vehicle with a fixed driving path. According to the steering principle, a mathematical model of the steering system and the driving trajectory are established. By setting the boundary conditions, the vehicle trajectory is modeled using a quintic polynomial. The contour of the directional control cam is obtained based on the equation of the vehicle trajectory. Because errors occur in actual machining and assembly processes, errors will be classified based on their impact on the trajectory. The effects of various errors on the trajectory are quantitatively determined by using simulation methods with different parameters. Furthermore, an error compensation approach is designed to reduce the influence of the error on the trajectory directly or indirectly. Finally, experiment results illustrate that the adjustment accuracy of the proposed automated guided vehicle trajectory is 2 mm.

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Reliability analysis of rolling bearings considering internal clearance

Huang

et al. 2020

J Mech Sci Technol

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Accuracy analysis of spatial multi-loop mechanism effected by paired bearings support joint clearance

Cited by 8 publications

References 45 publications

Precision estimation of large space-borne parabolic antenna support structure

Precision estimation of large space-borne parabolic antenna support structure

Design and error compensation of active mechanically automated guided vehicle

Reliability analysis of rolling bearings considering internal clearance

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