Design of diamond piezoelectric micro displacement amplification mechanism

Wei-qing, 黄卫清 Huang; Shi, Xiaoqing; Yin, 王寅 Wang

doi:10.3788/ope.20152303.0803

Cited by 6 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the equivalent mass of the DBMA is (19) According to Equations (14) and (19), the natural frequency of the DBMA is…”

Section: Of 15mentioning

confidence: 99%

“…And static deformation simulation results are shown in Figure 12. (19) According to Equation (14) and (19), the natural frequency of the DBMA is ( ) 3 2 2 2 2 2 4 3 e n e 11 2 4 1 2 2 2 1 1 32 16 6 32 16 = 1 9 2 2 It can be seen from Equation (21) that the natural frequency fn of the DBMA is positively correlated with the amplification ratio R and the equivalent stiffness Ke, that is, increasing either R or Ke, the natural frequency can be increased.…”

Section: Simulation Research On Dbmamentioning

confidence: 99%

“…The actual magnification was about 1.5 times [18]. Huang designed a diamond-shaped micro-displacement amplifier with bidirectional active output that features a symmetrical structure design and uses 4 actuators [19]. Huang et al designed a skew-symmetric amplifier that converts a linear input into an angular output [20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling and Experimental Study of Double-Row Bow-Type Micro-Displacement Amplifier for Direct-Drive Servo Valves

et al. 2020

View full text Add to dashboard Cite

Giant magnetostrictive actuators (GMA) are widely used in the field of servo valves, but the displacement of GMA is limited, which renders meeting the requirements of large flow direct-drive electro-hydraulic servo valves (DDV) difficult. In order to solve these problems, this study proposes a double-row bow-type micro-displacement amplifier (DBMA), used to increase output displacement of GMA to meet the requirements. This study, by static analysis, analyzes the force of a flexure hinge based on theoretical mechanics and material mechanics, derives the stiffness matrix of the flexure hinge by the influence coefficient method, establishes the pseudo-rigid model, and derives the amplification ratio of a DBMA. Also, by kinetic analysis, using Castigliano’s second theorem, a formula of equivalent stiffness and natural frequency of DBMA were derived and the influences of different parameters on them were analyzed, respectively. After that, we analyzed the amplifier using finite element method (FEM) simulation software and verified the model by manufacturing a prototype and building a test system. Theoretical calculations and experimental results showed that the amplification ratio of the DBMA fluctuated between 15.43 and 16.25. The natural frequency was about 305 Hz to 314 Hz and the response bandwidth was up to 300 Hz. The error among the theoretical, simulated, and experimental values was within 8%, supporting the accuracy of the model.

show abstract

“…Therefore, the equivalent mass of the DBMA is (19) According to Equations (14) and (19), the natural frequency of the DBMA is…”

Section: Of 15mentioning

confidence: 99%