Design and research of a piezoelectric-hydraulic hybrid actuation system with a half-wave resonator

IF 2.4 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Intelligent Material Systems and Structures Pub Date : 2024-06-01 DOI:10.1177/1045389x241253120

Jun Jian Zhang, Min Qian, Zhi Hua Feng

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Abstract

A novel piezoelectric-hydraulic hybrid actuation system with a half-wave resonator is proposed in this paper to generate high-frequency, high-pressure liquid flow and mechanical output through liquid resonance. The new hybrid actuator is similar to the traditional hybrid actuator, with the main difference being the pump chamber itself. The length of the specially designed pump chamber is greater than that of the traditional pump chamber, which facilitates resonance by virtue of the compliance and inertia of the liquid. Once the excitation frequency approaches the resonant frequency of the liquid in the pump chamber, the pressure in the pump chamber will be higher than that under quasi-static conditions, and the output of the hybrid actuator will benefit from it. The compositional structure and working principle of the new hybrid actuator are presented, and its output performance is experimentally studied. When the voltage is 400 Vp-p and the frequency is approximately 2.44 kHz, the actuator can output a maximum no-load velocity of 5.4 mm/s and a maximum blocking force of 181 N. This strategy verifies the feasibility of using liquid resonance for actuation and realizes high-frequency excitation of the hybrid actuator, which also provides a reference for future research on high-frequency hybrid actuators.

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带半波谐振器的压电-液压混合致动系统的设计与研究

本文提出了一种带有半波谐振器的新型压电液压混合致动系统，可通过液体共振产生高频高压液体流和机械输出。新型混合致动器与传统的混合致动器相似，主要区别在于泵腔本身。专门设计的泵腔长度大于传统泵腔，这有利于通过液体的顺应性和惯性产生共振。一旦激励频率接近泵腔内液体的共振频率，泵腔内的压力就会高于准静态条件下的压力，混合致动器的输出也会因此受益。本文介绍了新型混合致动器的组成结构和工作原理，并对其输出性能进行了实验研究。当电压为 400 Vp-p、频率约为 2.44 kHz 时，致动器可输出 5.4 mm/s 的最大空载速度和 181 N 的最大阻挡力。该策略验证了利用液体共振进行致动的可行性，实现了混合致动器的高频激励，也为未来高频混合致动器的研究提供了参考。

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来源期刊

Journal of Intelligent Material Systems and Structures 工程技术-材料科学：综合

CiteScore

5.40

自引率

11.10%

发文量

126

审稿时长

4.7 months

期刊介绍： The Journal of Intelligent Materials Systems and Structures is an international peer-reviewed journal that publishes the highest quality original research reporting the results of experimental or theoretical work on any aspect of intelligent materials systems and/or structures research also called smart structure, smart materials, active materials, adaptive structures and adaptive materials.