Networked predictive vibration control for offshore platforms with random time delays, packet dropouts and disordering

Adaptive neural network H∞$H_\infty$ control for offshore platform with input delay and nonlinearity

“…Figures 14-16 show the adaptive period with the initially un-tuned weights. The additional wind excitation leads to large oscillations in the initial adaption for around 30 s. After the initial jittering, the system under ARHC maintains sta- Wind velocity(m/s) FIGURE 13 Wind velocity of loads acting on offshore platform.…”

“…When dealing with unknown and energy-bounded disturbances, as well as other sources of uncertainty mentioned above, it may be more practical to focus on finding feasible solutions with a high tolerance, rather than trying to derive an optimal solution directly [6]. To solve these uncertainty-induced problems, fuzzy-logic control and predictive networked control theories are utilized [12][13][14][15]. For certain constrained systems with any defined functional, synthesis event-triggered strategies [16], fault-tolerant robust strategies with qualified dynamic output feedback scheme [17], and delay-dependent stabilizing criteria have been proposed in recent years [18].…”

Vibration control of network-based offshore structures subject to earthquakes

“…Networked control schemes are also applied to the marine engineering field. Most recently, in communication network environments, several active damping control issues of marine structures under irregular wave loadings are investigated; see Ma et al (2019) and Zhang et al (2016, 2020a) and the references therein.…”

کنترل بهینه ی سکوی شابلونی تحت ارتعاش های امواج دریا با میراگر جرمی هماهنگ شده ی فعال

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