Simulation on an electro-hydrostatic actuator controlled by a high-pressure piezoelectric pump with a displacement amplifier

IF 1.9 4区计算机科学 Q3 AUTOMATION & CONTROL SYSTEMS Assembly Automation Pub Date : 2021-05-28 DOI:10.1108/AA-04-2020-0054

Bin Wang, Nanyue Xu, Pengyuan Wu, Rongfei Yang

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引用次数: 1

Abstract

Purpose The purpose of this paper is to provide a new hydrostatic actuator controlled by a piezoelectric piston pump and to reveal its characteristics. Design/methodology/approach In this paper, a piezoelectric pump with passive poppet valves and hydraulic displacement amplifier is designed as a new control component in a hydrostatic actuator for high actuation capacity. A component-level mathematical model is established to describe the system characteristics. Simulation verification for cases under typical conditions is implemented to evaluate the delivery behavior of the pump and the carrying ability of the actuator. Findings By using the displacement amplifier and the passive distributing valves, simulation demonstrates that the pump can deliver flow rate up to 3 L/min, and the actuator controlled by this pump can push an object weighing approximately 50 kg. In addition, it is particularly important to decide a proper amplification ratio of the amplifier in the pump for better actuation performance. Originality/value The piezoelectric pump presented in this paper has its potential to light hydrostatic actuator. The model constructed in this paper is valid for characteristic analysis and performance evaluation of this pump and actuators.

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带位移放大器的高压压电泵控制电液静压执行器的仿真

目的提出一种由压电柱塞泵控制的新型静液作动器，并揭示其特性。设计方法:本文设计了一种带被动锥阀和液压位移放大器的压电泵，作为一种新型的控制元件，用于高驱动能力的静液作动器。建立了组件级数学模型来描述系统的特性。通过典型工况下的仿真验证，评估了泵的输送性能和执行机构的承载能力。利用位移放大器和被动分配阀，仿真表明该泵的流量可达3 L/min，由该泵控制的执行器可推动约50 kg重的物体。此外，为获得更好的驱动性能，确定泵内放大器的适当放大比尤为重要。本文所提出的压电泵在轻型静液执行器方面具有潜力。本文所建立的模型对该泵及其执行机构的特性分析和性能评价是有效的。

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来源期刊

Assembly Automation 工程技术-工程：制造

CiteScore

4.30

自引率

14.30%

发文量

审稿时长

3.3 months

期刊介绍： Assembly Automation publishes peer reviewed research articles, technology reviews and specially commissioned case studies. Each issue includes high quality content covering all aspects of assembly technology and automation, and reflecting the most interesting and strategically important research and development activities from around the world. Because of this, readers can stay at the very forefront of industry developments. All research articles undergo rigorous double-blind peer review, and the journal’s policy of not publishing work that has only been tested in simulation means that only the very best and most practical research articles are included. This ensures that the material that is published has real relevance and value for commercial manufacturing and research organizations.