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Swing Angle Estimation for Anti-Sway Overhead Crane Control Using Load Cell
Mohammad Ebrahimi,Mostafa Ghayour,Seyed M. Madani,Amir Khoobroo 제어·로봇·시스템학회 2011 International Journal of Control, Automation, and Vol.9 No.2
Overhead crane movement results in suspended load sway, which may cause dangers and damages. Common anti-sway methods are based on swing angle information. This paper presents a novel method that uses load cell sensors for swing angle estimation. According to our proposed method, a damping signal is generated and added to the speed reference in order to suppress the suspended load sway. Conventional methods of swing angle estimation are based on measurement by camera vision, acceleration, or some other type of sensor. Compared to conventional methods, the proposed method based on load cell is simpler to build and less sensitive to ambient conditions. The effectiveness of the method is verified by computer simulation.