伺服控制液流阻尼器之試驗與分析

Abstract

本論文接續過去之研究，針對半主動式液流阻尼器進行特性分析。近幾年液流阻尼器之研發及應用已逐漸普及，亦有許多人對液流阻尼器做出研究，並提出不同的分析模式，本論文嘗試對同一半主動式液流阻尼器進行試驗，藉由調整微調控制閥及電磁伺服閥來控制液流阻尼器中旁通管的油路開孔面積，以期改變此液流阻尼器之阻尼係數、勁度係數與遲滯迴圈的消能效果，試驗後以Bingham Model為主要架構分析實驗數據。分析結果顯示，此半主動式液流阻尼器之阻尼係數隨著旁通管之油路開孔面積改變而改變，而勁度係數隨著震動的頻率有接近線性的變化，亦說明了此半主動式液流阻尼器之特性的可變性及可控制性。

The objective of this research is experiment analyzing a servocontrol fluid damper. This research is a continue study that is to investigate the physic nature and energy dissipation mechanism of a semi-active servocontrol fluid damper and the feasibility of applying it in a structural control system. The control system is designed via an electronic control valve and a mechanical switch. The experiment is achieved in Structural Lab in NCTU. During the experiment, the damper force and relative displacement are measured by load cell and LVDI via different frequencies. The opening areas of electronic valve is also changed in four different values ,5 , 10, 15 and 20 voltages. After that, the experimented data are applied to the Bingham model to analyze the corresponding parameters, damping and stiffness values. The corresponding damping and stiffness values of the damper are calculated with different frequencies via linear regression. The analyzing results indicate that the damping values of the servocontrol fluid damper can be control through changing the opening valve area. The stiffness value of the damper is linear proportional variant with variant frequencies.