A model reference adaptive control based method for actuator delay estimation in real-time testing

作     者：Cheng CHEN James M.RICLES 

作者机构：School of EngineeringSan Francisco State UniversitySan FranciscoCA 94132USA ATLSS Engineering Research CenterLehigh UniversityBethlehemPA 18015USA 

出 版 物：《Frontiers of Structural and Civil Engineering》 (结构与土木工程前沿（英文版）)

年 卷 期：2010年第4卷第3期

页      面：277-286页

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：real-time testing actuator delay compensation adaptive control MIT rule discrete transfer function 

摘      要：Real-time testing provides a viable experimental technique to evaluate the performance of structural systems subjected to dynamic ***-hydraulic actuators are often utilized to apply calculated displacements from an integration algorithm to the experimental structures in a real-time *** compensation of actuator delay is therefore critical to achieve stable and reliable experimental *** advances in compensation methods based on adaptive control theory enable researchers to accommodate variable actuator delay and achieve good actuator control for real-time ***,these adaptive methods all require time duration for actuator delay *** show that a good actuator delay estimate can help optimize the performance of the adaptive compensation *** rate of adaptation also requires that a good actuator delay estimate be acquired especially for the tests where the peak structural response might occur at the beginning of the *** paper presents a model reference adaptive control based method to identify the parameter of a simplified discrete model for servo-hydraulic dynamics and the resulting compensation *** are conducted using both numerical analysis and experimental results to evaluate the effectiveness of the proposed estimation method.