A Study on a New Energy Saving Load Simulator using Hybrid Actuator and QFT Technique
A Study on a New Energy Saving Load Simulator using Hybrid Actuator and QFT Technique
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DOI：
10.1109/sice.2006.315179
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发表时间：
2006-10
期刊：
影响因子：
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通讯作者：
K. Ahn;N. Chau;Joo-Hyeon Yoon;Jung Su Kim;J. Yoon
中科院分区：
文献类型：
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作者：
K. Ahn;N. Chau;Joo-Hyeon Yoon;Jung Su Kim;J. Yoon
液压系统在工业应用中的使用由于其效率优势而变得广泛。近年来，混合驱动系统，它结合了电力和液压技术在一个紧凑的单元，可以适应各种各样的力，速度和扭矩的要求。此外，混合驱动系统解决了传统液压系统存在的能耗和噪声问题。采用直流电动机作为电源的新型低成本混合驱动器被认为是一种具有多种应用的新型线性驱动器。然而，这种效率增益通常伴随着系统稳定性的降低和控制问题。在本文中，保持鲁棒性能要求，跟踪性能指标，和干扰衰减的要求，鲁棒力控制器的设计的新的混合驱动器使用定量反馈理论（QFT）。在存在显著不确定性的情况下，从系统的实验频率响应中得到一族被控对象模型。实验结果表明，即使环境刚度和设定点力发生变化，混合驱动器也能实现高度鲁棒的力跟踪。此外，据了解，新系统具有节能效果，即使它有几乎相同的反应，阀控系统
The use of hydraulic systems in industrial applications has become widespread due to their efficiency advantages. In recent years, hybrid actuation system, which combines electric and hydraulic technology in a compact unit, can be adapted to a wide variety of force, speed and torque requirements. Moreover, the hybrid actuation system has dealt with the energy consumption and noise problem existed in the conventional hydraulic system. The new low cost hybrid actuator using DC motor as a power supply unit is considered as a novel linear actuator with various applications. However, this efficiency gain is often accompanied by a degradation of system stability and control problems. In this paper, to maintain robust performance requirement, tracking performance specification, and disturbance attenuation requirement, the design of a robust force controller for the new hybrid actuator using quantitative feedback theory (QFT) is presented. A family of plants model is obtained from experimental frequency responses of the system in the presence of significant uncertainty. Experimental results show that highly robust force tracking by hybrid actuator could be achieved even if the stiffness of environment and set-point force change. In addition, it is understood that the new system has energy saving effect even though it has almost the same response as that of valve controlled system