Integrating mechanism synthesis and topological optimization technique for stiffness-oriented design of a three degrees-of-freedom flexure-based parallel mechanism

Lum, Guo Zhan; Teo, Tat Joo; Yang, Guilin; Yeo, Song Huat; Sitti, Metin

doi:10.1016/j.precisioneng.2014.07.012

Cited by 42 publications

(35 citation statements)

References 14 publications

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“…In the literature, Lum et al [131] analyzed and optimized the compliant joints and then constructed an XYθ parallel stage by using the optimal results (see Figure 10a). Bharanidaran et al [132] designed a stroke amplifier by topology optimization (Figure 10b), which obtained a half-bridge amplifier.…”

Section: Topology Optimizationmentioning

confidence: 99%

Survey on Recent Designs of Compliant Micro-/Nano-Positioning Stages

2018

Actuators

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Micromanipulation is a hot topic due to its enabling role in various research fields. In order to perform a high precision operation at a small scale, compliant mechanisms have been proposed and applied for decades. In microscale manipulation, micro-/nano-positioning is the most fundamental operation because a precision positioning is the premise of subsequent operations. This paper is concentrated on reviewing the state-of-the-art research on complaint micro-/nano-positioning stage design in recent years. It involves the major processes and components for designing a compliant positioning stage, e.g., actuator selection, stroke amplifier design, connecting scheme of the multi-DOF stage and structure optimization. The review provides a reference to design a compliant micro-/nano-positioning stage for pertinent applications.

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Section: Topology Optimizationmentioning

confidence: 99%

Survey on Recent Designs of Compliant Micro-/Nano-Positioning Stages

2018

Actuators

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“…Thus, it is desirable to maximize a FPM's stiffness ratios, i.e. ratios of off-axis to actuating stiffness, to optimize the FPM's workspace and capabilities to resist disturbances [16,4,9,17,18]. In addition to attaining http://dx.doi.org/10.1016/j.precisioneng.2015.04.017 0141-6359/© 2015 Elsevier Inc. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown that the performance of FPMs can be enhanced by performing a size optimization on their sub-chains [3,14,17,19]. The kinematic approach currently does not utilize a similar optimization process for the topology of their sub-chains.…”

Section: Introductionmentioning

confidence: 99%

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Structural optimization for flexure-based parallel mechanisms – Towards achieving optimal dynamic and stiffness properties

Lum

Teo

Yeo

et al. 2015

Precision Engineering

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“…However, the hysteresis of the piezoelectric ceramic significantly reduces the positioning accuracy of the developed system, so a variety of hysteresis models and control methodologies for the piezoelectric have been proposed. In addition, electromagnetic-driven flexure stage starts to be designed in recent years [12][13][14], especially in the requirement of large stroke, but electromagnetic drive such as voice coil motor usually owns small output force, leading to a small stiffness of the stage and further a low resonant frequency. In reference [15,16], it is easy to find the mainstream modeling and control methods of piezo-actuated nanopositioning stages, and in reference [17], a corresponding general skeleton on this is presented.…”

Section: Introductionmentioning

confidence: 99%

An inverse Prandtl–Ishlinskii model based decoupling control methodology for a 3-DOF flexure-based mechanism

Guo

Tian

Liu

et al. 2015

Sensors and Actuators A: Physical

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Copies of full items can be used for personal research or study, educational, or not-forprofit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Abstract ： A modified Prandtl-Ishlinskii (P-I) hysteresis model is developed to form the feedforward controller for a 3-DOF flexure-based mechanism. To improve the control accuracy of the P-I hysteresis model, a hybrid structure that includes backlash operators, dead-zone operators and a cubic polynomial function is proposed. Both the rate-dependent hysteresis modeling and adaptive dead-zone thresholds selection method are investigated. System identification was used to obtain the parameters of the newly-developed hysteresis model. Closed-loop control was added to reduce the influence from external disturbances such as vibration and noise, leading to a combined feedforward/feedback control strategy. The cross-axis coupling motion of the 3-DOF flexure-based mechanism has been explored using the established controller. Accordingly, a decoupling feedforward/feedback controller is proposed and implemented to compensate the coupled motion of the moving platform. Experimental tests are reported to examine the tracking capability of the whole system and features of the controller. It is demonstrated that the proposed decoupling control methodology can distinctly reduce the coupling motion of the moving platform and thus improve the positioning accuracy and trajectory tracking capability.

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Integrating mechanism synthesis and topological optimization technique for stiffness-oriented design of a three degrees-of-freedom flexure-based parallel mechanism

Cited by 42 publications

References 14 publications

Survey on Recent Designs of Compliant Micro-/Nano-Positioning Stages

Survey on Recent Designs of Compliant Micro-/Nano-Positioning Stages

Structural optimization for flexure-based parallel mechanisms – Towards achieving optimal dynamic and stiffness properties

An inverse Prandtl–Ishlinskii model based decoupling control methodology for a 3-DOF flexure-based mechanism

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