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首页> 外文会议>Twelfth International Conference on Adaptive Structures and Technologies, Oct 15-17, 2001, University of Maryland >COMPACT PIEZO-HYDRAULIC HYBRID ACTUATOR
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COMPACT PIEZO-HYDRAULIC HYBRID ACTUATOR

机译：紧凑型压电液压混合执行器

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摘要

This paper discusses the preliminary design, fabrication and testing of a compact piezo-hydraulic hybrid actuator. The device is envisaged as a potential actuator for a trailing edge flap on a full scale smart rotor system. Preliminary sizing was carried out to meet the requirements of a trailing edge flap on a section of a full scale MD900 Explorer helicopter rotor blade. The device consists of two parts. The first part is a pump driven by piezoceramic stacks and the second part is an output stage comprising a hydraulic cylinder and a directional valve. The overall size of the pump is 4"x1.5"x1.5". The present design is focused towards a high pumping frequency in order to obtain a compact device with a large power density. Experiments were performed to measure the unidirectional output characteristics of the device as a function of system parameters such as bias pressure, pumping frequency and check valve design. A no-load velocity of 0.65 in/sec and a blocked force of 22 1bs were measured. The maximum pumping frequency was 300 Hz.
机译：本文讨论了紧凑型压电液压混合执行器的初步设计，制造和测试。该设备被设想为全尺寸智能转子系统上后缘襟翼的潜在致动器。进行了初步定型，以满足全尺寸MD900 Explorer直升机旋翼桨叶截面上后缘襟翼的要求。该设备包括两个部分。第一部分是由压电陶瓷堆栈驱动的泵，第二部分是包括液压缸和换向阀的输出级。泵的整体尺寸为4“ x1.5” x1.5“。本设计着眼于高泵浦频率，以获得具有大功率密度的紧凑型设备。进行了测量单向输出特性的实验根据系统参数（例如偏压力，泵送频率和止回阀设计）的变化，测量空载速度为0.65 in / sec，阻塞力为22 1bs，最大泵送频率为300 Hz。

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