Design and Analysis of a Hybrid Displacement Amplifier Supporting a High-Performance Piezo Jet Dispenser

Zhou, Shuai; Yan, Peng

doi:10.3390/mi14020322

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…This results in a constraint that negatively affects the achievement of a significant output displacement for the compliant stages. Consequently, a number of displacement amplifiers were created to enhance the output displacement of developed mechanisms, such as an L-shape lever [15], a hybrid rhombus lever [16], a double lever [17], a single lever [18], a symmetric four-lever [19], a hybrid bridge-lever-bridge [20], and a hybrid bridge-Scott-Russell mechanism [21].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of a Novel Compact Compliant 2-DOF Positioner for Positioning to Assess Bio-Specimen Characteristics

Dang,

Le,

Tran

et al. 2024

Machines

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A novel compact 2-DOF compliant positioner is developed for the purpose of achieving good characteristics such as high natural frequency, high displacement amplification ratio, good linear motion, and compact structure based on its symmetrical structure. To be specific, the developed stage is proposed according to an advanced six-lever displacement amplifier arranged at an inclination angle of the rigid bar utilizing right circular hinges and a parallel guiding mechanism with integrated flexure leaf hinges to attain the above-mentioned characteristics and reduce the decoupling mobility error. First, to quickly assess the initial quality response, an integration method of kinetostatic analysis, the Lagrange method, and finite element analysis was applied to evaluate and verify the quality characteristic of the stage. The experimental result showed that the error between the analytical method and the FEA method was 1.3%, which was relatively small and reliable for quickly assessing the primary quality response of the proposed positioner. Next, to boost the important output characteristics of the developed positioner, the integration approach of the response surface method and NSGA-II algorithm was utilized to find the optimal design variables. Finally, a prototype was manufactured based on the CNC milling method to validate the experimental and FEA analysis results. The attained results show that the optimal results of safety factor and output displacement were 2.4025 and 248.9 µm. Moreover, the FEA verification results were 2.4989 and 242.16 µm, with errors for safety factor and output displacement between the optimal result and the FEA result of 3.86% and 2.78%, respectively. In addition, the simulation and experimental results of the first natural frequency were 371.83 Hz and 329.59 Hz, respectively, and the error between the FEA result and experimental result for the first natural frequency was 11.36%. Furthermore, the achieved results show that the relationship between input displacement and output displacement of the experimental result and the FEA result of the developed structure achieved a good linear connection. These results suggest that the proposed positioner will be a potential structure employed in precise positioning systems and nanoindentation testing positioning systems for checking bio-specimens’ behaviors.

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Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of a Novel Compact Compliant 2-DOF Positioner for Positioning to Assess Bio-Specimen Characteristics

Dang,

Le,

Tran

et al. 2024

Machines

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“…Piezoelectric ceramic is a transducer that transforms electrical energy into mechanical energy [ 1 , 2 , 3 ]. It has characteristics of high resolution, fast response, high stiffness, little magnetic interference, and little heat generation, making piezoelectric ceramic advantageous over conventional actuators in precise applications [ 4 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Stability Compensation Design and Analysis of a Piezoelectric Ceramic Driver with an Emitter Follower Stage

et al. 2023

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Piezoelectric ceramic has been widely applied in many fields because of its characteristics, and the performance of piezoelectric ceramic is determined strongly by its driver. In this study, an approach to analyzing the stability of a piezoelectric ceramic driver with an emitter follower stage was presented, and a compensation was proposed. First of all, using the method of modified nodal analysis and loop gain analysis, the transfer function for the feedback network was analytically deduced, and the cause of the instability of the driver was found to be the pole composed of the effective capacitance from the piezoelectric ceramic and the transconductance from the emitter follower. Then, a compensation involving a novel delta topology composed of an isolation resistor and a second feedback path was proposed, and its function principle was discussed. Simulations showed a correspondence between the analysis and the effectiveness of the compensation. Finally, an experiment was set up with two prototypes, one with compensation, and the other without compensation. Measurements showed the elimination of oscillation in the compensated driver.

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“…Investigations have shown that research on static modeling of the compliant-amplifying mechanism has attracted a great deal of attention, and the methods used [ 18 ] mainly include Castigliano’s second theorem [ 2 , 19 , 20 , 21 , 22 ], the flexibility matrix method [ 23 , 24 , 25 , 26 , 27 , 28 ], the matrix displacement method [ 1 , 29 , 30 ], the elastic beam theory [ 31 , 32 , 33 , 34 , 35 , 36 , 37 ], and kinematic principles [ 35 , 38 , 39 , 40 , 41 , 42 ]. Based on these methods, the effects of the main parameters of the mechanism on its static characteristics have been analyzed, and the relationship between the input and output displacements of the mechanism was established.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Optimization of Dynamic and Static Characteristics of the Compliant-Amplifying Mechanisms

et al. 2023

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Compliant amplifying mechanisms are used widely in high-precision instruments driven by piezoelectric actuators, and the dynamic and static characteristics of these mechanisms are closely related to instrument performance. Although the majority of existing research has focused on analysis of their static characteristics, the dynamic characteristics of the mechanisms affect their response speeds directly. Therefore, this paper proposes a comprehensive theoretical model of compliant-amplifying mechanisms based on the multi-body system transfer matrix method to analyze the dynamic and static characteristics of these mechanisms. The effects of the main amplifying mechanism parameters on the displacement amplification ratio and the resonance frequency are analyzed comprehensively using the control variable method. An iterative optimization algorithm is also used to obtain specific parameters that meet the design requirements. Finally, simulation analyses and experimental verification tests are performed. The results indicate the feasibility of using the proposed theoretical compliant-amplifying mechanism model to describe the mechanism’s dynamic and static characteristics, which represents a significant contribution to the design and optimization of compliant-amplifying mechanisms.

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Design and Analysis of a Hybrid Displacement Amplifier Supporting a High-Performance Piezo Jet Dispenser

Cited by 6 publications

References 37 publications

Analysis and Optimization of a Novel Compact Compliant 2-DOF Positioner for Positioning to Assess Bio-Specimen Characteristics

Analysis and Optimization of a Novel Compact Compliant 2-DOF Positioner for Positioning to Assess Bio-Specimen Characteristics

Stability Compensation Design and Analysis of a Piezoelectric Ceramic Driver with an Emitter Follower Stage

Analysis and Optimization of Dynamic and Static Characteristics of the Compliant-Amplifying Mechanisms

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