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.

中文翻译：

---

由带位移放大器的高压压电泵控制的静液执行器仿真

目的

本文的目的是提供一种由压电活塞泵控制的新型静液压执行器并揭示其特性。

设计/方法/方法

在本文中，具有被动提升阀和液压位移放大器的压电泵被设计为具有高驱动能力的静液压执行器中的新控制组件。建立组件级数学模型来描述系统特性。对典型工况进行仿真验证，评估泵的输送行为和执行机构的承载能力。

发现

通过使用排量放大器和被动分配阀，仿真表明泵可以提供高达 3 L/min 的流量，并且由该泵控制的执行器可以推动重约 50 kg 的物体。此外，为获得更好的驱动性能，决定泵中放大器的适当放大比尤为重要。

原创性/价值

本文中介绍的压电泵具有轻型流体静力执行器的潜力。本文构建的模型适用于该泵和执行器的特性分析和性能评估。