Design and modeling of a compact compliant stroke amplification mechanism with completely distributed compliance for ground-mounted actuators

Li, Haiyang; Guo, Fanyi; Wang, Zhipeng; Li, Cuiling; Ling, Mingxiang; Hao, Guangbo

doi:10.1016/j.mechmachtheory.2021.104566

Cited by 18 publications

(4 citation statements)

References 44 publications

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“…With the input range from 55 N to 160 N, the amplification ratio increase gradually from 25.2982 to 25.2994 with the rise in the input force. The trend is comparable with peer results [20]. This design's amplification ratio was relatively higher than existing models, with an amplification ratio between 17.90 and 22.62.…”

Section: Resultssupporting

confidence: 87%

Design of Two-Stage Force Amplification Frame for Piezoelectric Energy Harvester

Teoh

2023

JMechE

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This paper describes the design of a two-stage force amplification frame for the piezoelectric energy harvester to capture mechanical energy from walking human footsteps. The frame design optimises the stress distribution to improve the force amplification ratio on the existing footstep energy harvesters. The magnification of the input force exerted on a piezoelectric stack increases the system's power output. A combination of single and compound two-stage frame design with additional linkage support was proposed, which maximise the conversion of tension to compression forces. The proposed frame also significantly reduces the maximum displacement of the frame to ensure walking comfort. The frame is tested with the input force of 85 N to 120 N based on the adult footstep during walking and running. The simulated results show that the proposed frame has a force amplification ratio of 25.3, an 11.85% improvement from the existing frames. The frame also limits the maximum displacement to 1.02 mm, 22.14% compared to the existing frames.

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Section: Resultssupporting

confidence: 87%

Design of Two-Stage Force Amplification Frame for Piezoelectric Energy Harvester

Teoh

2023

JMechE

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“…In contrast, micromanipulators based on compliant parallel mechanisms utilize the deformation of flexure hinges to transmit motion, effectively addressing these issues. They also offer advantages such as high stiffness and compact structure, enabling high-precision manipulations [3][4][5][6][7][8]. Therefore, it has attracted a large number of scholars to conduct research on micromanipulators based on compliant parallel mechanisms with various configurations.…”

Section: Introductionmentioning

confidence: 99%

Compliance and Kinetostatics of a Novel 2PRS-2PSS Compliant Parallel Micromanipulator: Modeling and Analysis

Ren,

Jiang

2024

Micromachines

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A novel 2PRS-2PSS (P represents the prismatic pair, R represents the revolute hinge, S represents the spherical hinge) compliant parallel micromanipulator with two translational DOFs and two rotational DOFs is presented, and its compliance model and kinetostatic model are sequentially developed and analyzed. Initially, an analytical model used to describe the compliance of this micromanipulator was developed using the compliance matrix method (CMM). Through a comparison with finite element analysis, the accuracy of this analytical model is confirmed, and the influence of various dimensional and structural parameters on the compliance behavior is investigated. Subsequently, the micromanipulator is treated as an equivalent spring system, allowing for the derivation of its governing equation based on the established compliance model. From this equation, a kinetostatic model relating input forces to output displacements is derived. Validation of this model is performed by comparing analytical results with finite element simulations under specific motion trajectories, revealing a maximum relative error of 6.18%. This close agreement verifies the accuracy of the kinetostatic model. Finally, the impact of the parameters of the flexure hinge on the mapping matrix is examined to offer insights into minimizing undesired displacements, providing valuable guidance for optimizing the micromanipulator’s performance.

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“…The authors also designed and developed a compliant mechanism that finds its application in the biomedical industry. Li et al [15] prepared the kinetostatic model of compliant stroke amplification model considering payloads applied on output stage and quick. Intuitive determinate analysis was derived to enhance the optimization associated with parameters to achieve diverse objective functions.…”

Section: Introductionmentioning

confidence: 99%

Development of distributed compliant mechanism for two distinct applications: displacement amplifying and object holding mechanism

et al. 2023

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Compliant mechanism finds its application in high precision devices for precise movements attaining positioning accuracy, micro actuation, aerospace, biomedical engineering, etc. A detailed study of compliant mechanisms capable of transferring coplanar motion/ force along with geometric amplification was undertaken and is presented. An iterative approach was undertaken successively to design and develop a displacement amplifying compliant mechanism (DaCM) within a specified design domain with the objective to obtain geometric amplification (GA) of 3. Also, an application of object holding mechanism using topology optimization has been presented. The optimized topology was further iterated for attaining desired objective function and modifications in the geometry are undertaken considering design for manufacturing and design for assembly principles. With the modifications undertaken, a reduction in (GA)T is observed and the volume fraction of the mechanism is increased than the base model resulting into more strength required for object holding. However, the designer needs to balance between stiffness and compliance based on the objective function of specific application.

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Design and modeling of a compact compliant stroke amplification mechanism with completely distributed compliance for ground-mounted actuators

Cited by 18 publications

References 44 publications

Design of Two-Stage Force Amplification Frame for Piezoelectric Energy Harvester

Design of Two-Stage Force Amplification Frame for Piezoelectric Energy Harvester

Compliance and Kinetostatics of a Novel 2PRS-2PSS Compliant Parallel Micromanipulator: Modeling and Analysis

Development of distributed compliant mechanism for two distinct applications: displacement amplifying and object holding mechanism

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