Modelling and Analysis of Piezoelectric Microgripper for Unmanned Aerial Vehicle

Nachippan, N. Murugu; Venkatesh, A.; Muniyappan, M.

doi:10.1016/j.matpr.2018.06.306

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…A precision micropositioner using piezoelectric components as the actuators can overcome the shortcomings of conventional positioning devices and have unique advantages in micron and sub-micron precision positioning control [6][7][8][9][10]. According to previous research results, piezoelectric actuators could include conventional piezoelectric components [11,12], piezoceramic bimorphs [13][14][15], piezoelectric stacks [16,17] and composite structures, etc.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and Polarization Test of IDEs Piezoelectric Actuator

et al. 2022

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A new type of actuator is presented in the paper that integrates the IDEs into a conventional piezoelectric sheet. The electrodes and polarization play a key role in the strain. Adopting constitutive equations of piezoelectric theory and variation principles in elasticity theory, the piezoelectric component dynamic equation was deduced. Several finite element models of the IDEs piezoelectric actuator were established in ANSYS. The effect of branch electrodes on the strain of the actuator was analyzed. The results show that the strain can be bigger than that of the conventional piezoelectric sheet by decreasing the gap and increasing the width of electrodes. According to the FEM result, some IDEs piezoelectric actuators were prepared. The distribution of the static electric field inside the actuator was researched to determine the polarization voltage. The 2671 high voltage power and DU-20 temperature-controlled oil bath was applied to explore the polarization process. The effect of the voltage, time and temperature on the strain of the actuator was researched by a TF2000 and SIOS laser interferometer. The results show that the optimum polarization is 800 V, for 60 min and at 150 ℃. The strain of the IDEs piezoelectric actuator is 1.87 times that of the conventional piezoelectric actuator. The actuators could prove to be helpful applications for micro-nano devices.

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Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and Polarization Test of IDEs Piezoelectric Actuator

et al. 2022

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“…These characteristics improved the effect of micro-manipulation operations. The micro-manipulation tasks can be realized with many kinds of actuation such as piezoelectric actuator, electrostatic, electromagnetic microgrippers, shape-memory alloy (SMA), electroactive polymers (EAPs) [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Multi-layer piezoelectric materials were proposed for a large displacement and high force to expand its application possibilities (Yang and Xu 2017 The International Journal of Advanced Manufacturing Technology [23]; Wu and Xu 2018 [24]). Nachippan et al (2018) [9] application model of piezoelectric microgripper for unmanned aircraft was also considered, analysis of the arbitrary variable structure of microgripper was performed and COMSOL MULTIPHYSICS 4.2 software was used for piezoelectric analysis. Research has shown that the material that creates piezoelectric microgripper also significantly affects the degree of movement of the mechanism, specifically compared to conventional materials such as silicon, polysilicon, and silicon dioxide.…”

Section: Introductionmentioning

confidence: 99%

Optimization Parameter for Micro-Gripper Based on Triple-Stair Compliant Mechanism Using GTs-TOPSIS

Wang

2021

Preprint

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In manipulating the assembly of micro-components, the symmetrical microgripper mechanism often causes destruction, damaging the micro-components during manipulation. The reason is due to the phenomenon of non-uniform clamping force output of the clamp. From this disadvantage, a new asymmetric microgripper structure is proposed with stable output clamping force. The asymmetric microgripper structure will have a smaller output displacement than the symmetric structure. Therefore, to increase the output displacement gain, a flexible hinge with a triple stair half bridge-style mechanism is adopted to design the amplifier of the asymmetrical microgripper. The finite element method is applied to analyze the displacement and stress. The optimization process is performed based on the geometric parametric properties of the structure. Using the technology for order preference by similarity to ideal solution (TOPSIS) based on the grey relationship analysis (GRA) obtained the maximal displacement output and minimal stress. The results show that the maximum output displacement is 5,818 mm, stress after analysis is 2,432MPa. The test is conducted to verify the optimal results and the effectiveness of the optimization method. Finally, experimental experiments were performed, with a 4.8% difference from the FEA results. The results from the experimental test verify that the microgripper's maximum displacement amplification ratio is approximately 58.2 times.

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“…At present, a variety of microgrippers has been developed with different driving modes. The common driving modes of microgrippers are the piezoelectric drive [8,9], electrostatic drive [10,11], electrothermal drive [12,13], shape memory alloy (SMA) drive [14,15], pneumatic drive [16,17], etc. Compared with other driving modes, the piezoelectric drive has the advantages of small size, large output force, high sensitivity, and no gap.…”

Section: Introductionmentioning

confidence: 99%

Design of a Compliant Mechanism Based Four-Stage Amplification Piezoelectric-Driven Asymmetric Microgripper

Chen

Deng

et al. 2019

Micromachines

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The existing symmetrical microgrippers have larger output displacements compared with the asymmetrical counterparts. However, the two jaws of a symmetrical microgripper are less unlikely to offer the same forces on the two sides of a grasped micro-object due to the manufacture and assembly errors. Therefore, this paper proposes a new asymmetric microgripper to obtain stable output force of the gripper. Compared with symmetrical microgrippers, asymmetrical microgrippers usually have smaller output displacements. In order to increase the output displacement, a compliant mechanism with four stage amplification is employed to design the asymmetric microgripper. Consequently, the proposed asymmetrical microgripper possesses the advantages of both the stable output force of the gripper and large displacement amplification. To begin with, the mechanical model of the microgripper is established in this paper. The relationship between the driving force and the output displacement of the microgripper is then derived, followed by the static characteristics’ analysis of the microgripper. Furthermore, finite element analysis (FEA) of the microgripper is also performed, and the mechanical structure of the microgripper is optimized based on the FEA simulations. Lastly, experimental tests are carried out, with a 5.28% difference from the FEA results and an 8.8% difference from the theoretical results. The results from theoretical calculation, FEA simulations, and experimental tests verify that the displacement amplification ratio and the maximum gripping displacement of the microgripper are up to 31.6 and 632 μm, respectively.

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Modelling and Analysis of Piezoelectric Microgripper for Unmanned Aerial Vehicle

Cited by 6 publications

References 12 publications

Finite Element Analysis and Polarization Test of IDEs Piezoelectric Actuator

Finite Element Analysis and Polarization Test of IDEs Piezoelectric Actuator

Optimization Parameter for Micro-Gripper Based on Triple-Stair Compliant Mechanism Using GTs-TOPSIS

Design of a Compliant Mechanism Based Four-Stage Amplification Piezoelectric-Driven Asymmetric Microgripper

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