Displacement Feedback Control of Servo-Hydraulic Actuators Using Image-Based Analysis Technology

被引：0
|
作者：
Cheng Y.-C. [1 ]
Chen P.-C. [1 ]
Yang Y.-S. [2 ]
机构：
[1] Department of Civil and Construction Engineering, National Taiwan University of Science and Technology, Taipei
[2] Department of Civil Engineering, National Taipei University of Technology, Taipei
来源：
Journal of the Chinese Institute of Civil and Hydraulic Engineering | 2020年 / 32卷 / 08期
关键词：
Displacement feedback control; Dynamic loading test; Image-based measurement; Quasi-static cyclic loading test; Servo-hydraulic actuator;
D O I：
10.6652/JoCICHE.202012_32(8).0006
中图分类号：
学科分类号：
摘要：
Cyclic loading tests have been considered as the most effective approach to investigate force-to-displacement behavior of a structural specimen. In particular, an external displacement transducer is essential to measuring specimen deformation as displacement feedback for controlling the servo-hydraulic actuator on condition that fixtures are used to connect the actuator to the specimen. However, if the connection between the displacement transducer and specimen is loosen, incorrect feedback displacement could result in uncontrollable actuator response and fail the structural testing. In this study, image-based analysis technology has been applied to displacement feedback control of servo-hydraulic actuators for structural testing. A high-speed camera is used to capture images of the specimen which are sent to a real-time computational platform to calculate the specimen displacement in real time. The calculated displacement is transmitted to the digital controller of actuator through the Shared Common Random Access Memory Network, forming a closed-loop control system. Experimental results demonstrate that the proposed framework is applied to quasistatic cyclic loading tests and dynamic-loading tests successfully and stably with exceptional control performance. © 2020, Chinese Institute of Civil and Hydraulic Engineering. All right reserved.
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页码：721 / 732
页数：11
相关论文
共 21 条
  • [1] (2008)
  • [2] Yang Yuan-Sen, Wu Chiun-lin, Loh Chin-Hsiung, Yang Chung-Ming, Tu Wen-Hsiang, Shih Ming-Hsiang, Tung Shih-Heng, Caperan Philippe, Preliminary Study on Image-based Measurement, pp. 1-47, (2008)
  • [3] Yang Yuan-Sen, Huang Chang-Wei, Wu Chiun-lin, A Simple Image-Based Strain Measurement Method for Measuring The Strain Fields in an RC-Wall Experiment, Earthquake Engng Struct. Dyn, 41, pp. 1-17, (2012)
  • [4] Lewangamage Chamindalal Sujeewa, Abe Masato, Fujino Yozo, Yoshida Junji, Strain field measurements of rubber by image analysis and design criteria for laminated rubber bearings (LRB), Earthquake Engng Struct. Dyn, 33, pp. 445-464, (2004)
  • [5] Wu Chiun-lin, Kuo Wu-Wei, Yang Yuan-Sen, Hwang Shyh-Jiann, Elwood Kenneth J., Loh Chin-Hsiung, Moehle Jack P., Collapse of a nonductile concrete frame: Shaking table tests, Earthquake Engng Struct. Dyn, 38, pp. 205-224, (2009)
  • [6] (2014)
  • [7] Yang Yuan-Sen, Measurement of dynamic responses from large scale shake table tests by analyzing nonsynchronized videos, Sensors, 19, 16, pp. 1-28, (2019)
  • [8] (2007)
  • [9] (2010)
  • [10] (2008)
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