Robustness analysis of input shaping commands for two-mode flexible systems

Sung, Yoon-Gyung; Singhose, William

doi:10.1049/iet-cta.2007.0328

Cited by 64 publications

(15 citation statements)

References 9 publications

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“…From the crane control aspect, various control algorithms have been proposed to deal with sway suppression. These methods include open-loop control, such as input shaping control for gantry cranes, bridges (Ngo et al, 2012;Hong et al, 2003;Huey et al, 2008;Robertson and Singhose, 2009;Singhose et al, 2000;Sorensen et al, 2007;Sorensen and Singhose, 2008;Sung and Singhose, 2009a; Sung and Singhose, 2009b), and flexible systems in general (Hong et al, 2003;Huey et al, 2008;Robertson and Singhose, 2009;Singhose et al, 2000;Sorensen et al, 2007;Sorensen and Singhose, 2008;Sung and Singhose, 2009a;Sung and Singhose, 2009b) as well as closed-loop control, such as optimal control (Al-Garni et al, 1995;Hong et al, 2000), state feedback control (Kim et al, 2004;Kłosiński, 2005;Messineo et al, 2008;Park et al, 2007;Sawodny et al, 2002), fuzzy control (Ahmad, 2009;Benhidjeb and Gissinger, 1995;Chang and Chiang, 2008;Chen et al, 2009;Cho and Lee, 2002;Omar et al, 2004), adaptive control (Cheng-Yuan, 2007;Liu et al, 2005;Messineo and Serrani, 2009;Mizumoto et al, 2007;Ngo and Hong, 2012a;Tuan et al, 2013;Yang and Yang, 2007), and robust control…”

Section: Introductionmentioning

confidence: 99%

Fuzzy sliding mode control of an offshore container crane

Ngo

Nguyen

et al. 2017

Ocean Engineering

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A fuzzy sliding mode control strategy for offshore container cranes is investigated in this study. The offshore operations of loading and unloading containers are performed between a mega container ship, called the mother ship, and a smaller ship, called the mobile harbor (MH), which is equipped with a container crane. The MH is used to transfer the containers, in the open sea, and deliver them to a conventional stevedoring port, thereby minimizing the port congestion and also eliminating the need of expanding outwards. The control objective during the loading and unloading process is to keep the payload in a desired tolerance in harsh conditions of the MH motion. The proposed control strategy combines a fuzzy sliding mode control law and a prediction algorithm based on Kalman filtering for the MH roll angle. Here, the sliding surface is designed to incorporate the desired trolley trajectory while suppressing the sway motion of the payload. To improve the control performance, the discontinuous gain of the sliding control is adjusted with fuzzy logic tuning schemes with respect to the sliding function and its rate of change. Chattering is further reduced by a saturation function. Simulation and experimental results are provided to verify the effectiveness of the proposed control system for offshore container cranes.

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Section: Introductionmentioning

confidence: 99%

Fuzzy sliding mode control of an offshore container crane

Ngo

Nguyen

et al. 2017

Ocean Engineering

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“…On the other hand, too complicated algorithms were adopted in [35][36][37][38][39][40][41][42] to achieve good robust or adaptive performance. Moreover, different from the load sways of double-pendulum overhead cranes which were dealt with in the most existing literatures [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42], the double pendulums in the rotary crane system are both conical pendulums, and the system characteristics are more complex. Hence, even if the similar algorithm shown in [38] is adopted, the method for calculating the controller gain is different.…”

Section: Introductionmentioning

confidence: 99%

“…Nonetheless, when the hook mass or load shape cannot be ignored, the load swing presents twostage swing. For this problem, open-loop methods such as input shaping technology [27][28][29][30][31][32], motion planning method [33,34], were presented. On the other hand, closed-loop methods were also reported in [35,36].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An LMI‐Based Simple Robust Control for Load Sway Rejection of Rotary Cranes with Double‐Pendulum Effect

Ouyang

Wang

Zhang

et al. 2019

Mathematical Problems in Engineering

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In the double-pendulum rotary crane case, the load sway properties become more complicated so that the difficulty of design and analysis of crane control system is increased. Moreover, the change of rope length not only affects the stability of the system, but also leads to the decline of control performance. In order to solve the foregoing problems, a simple model for controller design is obtained by linearizing and decoupling the complex nonlinear model of rotary crane. Then, a linear feedback controller which can furnish robust performance is presented. Finally, numerical simulations verify the effectiveness of the proposed method by comparing with a traditional approach.

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“…Filtering reference input is an efficient method to reduce undesired oscillations and prevent rapid control signal changes in practical systems [1][2][3][4][5][6]. In recent years, fractional order pre-filters have been increasingly used in dynamical systems [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%