A Novel Parallel Precision Stage with Large Working Range Based on Structural Parameters of Flexible Hinges

Lu, Qian; Chen, Xifu; Liu, Zheng; Xu, Ning

doi:10.1007/s12541-019-00270-2

Cited by 6 publications

(2 citation statements)

References 17 publications

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“…On the other hand, compliant parallel mechanisms take into account the advantages of the friction-free, gap-free, assembly-free, and high-precision nature of the compliant mechanism, as well as the advantages of the high stiffness and high load of the parallel mechanism [ 3 , 4 , 5 , 6 ]. Compliant parallel mechanisms have been widely used in precision fields such as aerospace, pointing mechanisms, precision manufacturing, fiber optic docking, biomedicine, and other fields [ 7 , 8 , 9 , 10 , 11 ]. Among the emerging compliant parallel mechanisms, low-degree-of-freedom (especially three-degree-of-freedom) mechanisms are favored by many scholars due to their advantages of fewer driving components, more compact structure, and relatively low cost.…”

Section: Introductionmentioning

confidence: 99%

Compliance Modeling and Kinetostatic Analysis of a Generalized 3-PSS Compliant Parallel Micro-Motion Platform

Ren,

Lan

2024

Micromachines

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In order to expand the range of motion performance of the 3-PSS-compliant parallel micro-motion platform, a variable inclination angle of the mechanism’s guide rails was introduced to construct a category of generalized 3-PSS compliant parallel micro-motion platforms with distinct configurations (exhibiting different motion performances) but identical motion patterns (three translational degrees of freedom). The compliance and kinetostatics of such micro-motion platform are modeled and analyzed. Firstly, the compliance model is established based on the coordinate transformation method. Then, simplifying the micro-motion platform into a spring system, the kinetostatic model in terms of input force–output displacement is established based on the compliance model using the compliance matrix method. For practical application considerations, the kinetostatic model in terms of input displacement–output displacement is further derived based on the input force–output displacement model. Then, the correctness of the established compliance model and kinetostatic model is successively verified through finite element simulation. Finally, using two specified motion trajectories (spatial spiral trajectory and planar circular trajectory) as examples, an analysis is conducted on the influence of guide rail inclination angle variations on the kinetostatic performance of the micro-motion platform. This analysis serves as guidance for the rational design of such micro-motion platforms.

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Section: Introductionmentioning

confidence: 99%

Compliance Modeling and Kinetostatic Analysis of a Generalized 3-PSS Compliant Parallel Micro-Motion Platform

Ren,

Lan

2024

Micromachines

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“…Tomita et al designed a positioning stage driven by coupling forces generated by three brushless DC motors in three degrees of freedom (x, y, θ z ) and proposed a precision positioning system based on surface motor drive [19]. Lu et al investigated a new large working range parallel accuracy stage based on an optimized flexible hinge, which utilizes the stepping and continuous motion characteristics of the piezoelectric actuator to achieve high resolution and large working range positioning and adjustment [20]. Jeon et al proposed a new cylindrical magnetic levitation table, which uses a second-order statespace dynamic modeling method based on the input and output experimental data for system identification, and this table can achieve high precision translation and rotation [21].…”

Section: Introductionmentioning

confidence: 99%

Decoupling method for four-degree-of-freedom automatic centering and tilting worktable

Shao¹,

Liu²,

Li³

et al. 2022

Meas. Sci. Technol.

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The ultra-precise measurement of aero-engine rotor geometry error is the basis of its assembly, and adjusting the rotor coaxially with the measurement rotation axis is the key to ensure the measurement accuracy. As a typical adjustment device for rotor alignment, the traditional method of applying a four-degree-of-freedom centering and tilting table for adjustment does not take into account the coupling effect caused by the position of each adjustment motor not being perfectly perpendicular to each other, this paper gives the calibration method of the angle between each adjustment motor and the starting position of the angle grating, analyzes the principle of eccentricity and tilt adjustment and deduces the coupling solution method. Subsequently, the size of the coupling between the two adjustments is analyzed and an efficient adjustment method is given for its mechanical structure characteristics. The experimental results show that the platform can effectively decouple and quickly converge to the setting values of 0.3 µm and 0.5′′ for different initial eccentric distance and tilt angle. With the same adjustment accuracy, the number of adjustments is reduced by more than 50% and more than 37.5%, respectively, compared with the non-decoupled method.

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Performance Analysis and Configuration Optimization of a Hexapod Platform with Flexure Hinges

Wang,

Yu,

et al. 2023

Lecture Notes in Computer Science

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A Novel Parallel Precision Stage with Large Working Range Based on Structural Parameters of Flexible Hinges

Cited by 6 publications

References 17 publications

Compliance Modeling and Kinetostatic Analysis of a Generalized 3-PSS Compliant Parallel Micro-Motion Platform

Compliance Modeling and Kinetostatic Analysis of a Generalized 3-PSS Compliant Parallel Micro-Motion Platform

Decoupling method for four-degree-of-freedom automatic centering and tilting worktable

Performance Analysis and Configuration Optimization of a Hexapod Platform with Flexure Hinges

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