Configuration design and experimental verification of a variable constant-force compliant mechanism

Ding, Bingxiao; Li, Xuan; Li, Yangmin

doi:10.1017/s0263574722000340

Cited by 18 publications

(7 citation statements)

References 30 publications

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“…In this section, models of amplification ratio, input stiffness, and natural frequency are established by using the pseudo-rigid-body (PRB) method. It is assumed that elastic deformation only occurs at the flexure and all deformations are pure bending, without any tensile or compress deformations (Ding et al, 2022; Song et al, 2022; Zhang et al, 2015a). The PRB model diagrams of the left and right amplifiers are shown in Figure 5.…”

Section: Modeling and Optimizationmentioning

confidence: 99%

Design, analysis, and experimental investigations of an asymmetrical under-actuated micro-gripper

Wu,

Wang,

Chen

et al. 2024

Journal of Intelligent Material Systems and Structures

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In this paper, we present a new asymmetrical under-actuated micro-gripper which can perform twisting and gripping operation to the target simultaneously actuated by a single piezoelectric actuator. Two improved hybrid amplification mechanisms were designed integrated with three different flexure hinges to enhance dynamic performances. Kinematics and dynamics models of the micro-gripper including input stiffness, displacement amplification ratio, and natural frequency based on pseudo-rigid-body method and Lagrange’s equations were derived. Proposed models were evaluated by finite element simulation studies. Experimental results shown that our designed micro-gripper possesses good performance in terms of clamping reliability and dynamic response.

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Section: Modeling and Optimizationmentioning

confidence: 99%

Design, analysis, and experimental investigations of an asymmetrical under-actuated micro-gripper

Wu,

Wang,

Chen

et al. 2024

Journal of Intelligent Material Systems and Structures

Self Cite

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“…In Ding et al (2022), an intelligent system of constant force mechanism based on the combination of negative and positive stiffness was presented. In this work, the authors have modeled and validated the system.…”

Section: Design and Control Of Intelligent Systemsmentioning

confidence: 99%

Advances on intelligent algorithms for scientific computing: an overview

et al. 2023

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The field of computer science has undergone rapid expansion due to the increasing interest in improving system performance. This has resulted in the emergence of advanced techniques, such as neural networks, intelligent systems, optimization algorithms, and optimization strategies. These innovations have created novel opportunities and challenges in various domains. This paper presents a thorough examination of three intelligent methods: neural networks, intelligent systems, and optimization algorithms and strategies. It discusses the fundamental principles and techniques employed in these fields, as well as the recent advancements and future prospects. Additionally, this paper analyzes the advantages and limitations of these intelligent approaches. Ultimately, it serves as a comprehensive summary and overview of these critical and rapidly evolving fields, offering an informative guide for novices and researchers interested in these areas.

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“…Unlike the traditional elastic structure, the CFM has quasi-zero stiffness (QZS) characteristics and don’t obey Hooke’s law. The CFM can be realized by many methods, and the typical method is by combining positive stiffness mechanism (PSM) with negative stiffness mechanism (NSM) to form QZS [9, 10]. Given these characteristics, CFMs contribute significantly in operating fragile and force sensitive objects [11, 12].…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of a decoupled serial constant force microgripper for force sensitive objects manipulation

Ding

Zhong

et al. 2023

Robotica

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To address coupling motion issues and realize large constant force range of microgrippers, we present a serial two-degree-of-freedom compliant constant force microgripper (CCFMG) in this paper. To realize a large output displacement in a compact structure, Scott–Russell displacement amplification mechanisms, bridge-type displacement amplification mechanisms, and lever amplification mechanisms are combined to compensate stroke of piezoelectric actuators. In addition, constant force modules are utilized to achieve a constant force output. We investigated CCFMG’s performances by means of pseudo-rigid body models and finite element analysis. Simulation results show that the proposed CCFMG has a stroke of 781.34 ${\unicode[Times]{x03BC}}\mathrm{m}$ in the X-direction and a stroke of 258.05 ${\unicode[Times]{x03BC}}\mathrm{m}$ in the Y-direction, and the decoupling rates in two directions are 1.1% and 0.9%, respectively. The average output constant force of the clamp is 37.49 N. The amplification ratios of the bridge-type amplifier and the Scott–Russell amplifier are 7.02 and 3, respectively. Through finite element analysis-based optimization, the constant force stroke of CCFMG is increased from the initial 1.6 to 3 mm.

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Configuration design and experimental verification of a variable constant-force compliant mechanism

Cited by 18 publications

References 30 publications

Design, analysis, and experimental investigations of an asymmetrical under-actuated micro-gripper

Design, analysis, and experimental investigations of an asymmetrical under-actuated micro-gripper

Advances on intelligent algorithms for scientific computing: an overview

Design and optimization of a decoupled serial constant force microgripper for force sensitive objects manipulation

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