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Recoil Control of Deepwater-Drilling Riser with Optimal Guaranteed Cost H∞ Control [PDF]
Applied Sciences, 2022 In deepwater-drilling engineering, it is necessary to disconnect the bottom equipment of the lower marine-riser package from the blowout preventer when encountering multi-hazard environmental factors.
Yue-Ting Sun +4 more
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An intelligent recoil controller for riser system based on fuzzy control theory
International Journal of Naval Architecture and Ocean Engineering, 2022 Riser recoil control is a complicated nonlinear control problem. An intelligent control methodology is proposed to control the complicated riser recoil response based on fuzzy control theory. A dynamic nonlinear model of drilling riser/tensioner coupling
Xiuquan Liu, Na Qiu, Yuanjiang Chang
exaly +4 more sources
Research Progress on Recoil Analysis and Control Technology of Deepwater Drilling Risers [PDF]
Energies, 2022 The deepwater drilling riser is a very important and vulnerable connection between an offshore platform and subsea wellhead. Under some certain complex marine environment and operating conditions, the offshore platform may drift beyond the safe ...
Yanbin Wang +3 more
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Recoil compensation control algorithm of gunship borne automatic weapon [PDF]
Zhihui kongzhi yu fangzhenAiming at the situation of unstable control and high error during recoil compensation control of gunship borne automatic weapon, the recoil compensation control algorithm of gunship borne automatic weapon is proposed.
LIN Kaiping
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Tunable photon-recoil forces and negative torque at flat-top beam edges [PDF]
Nature CommunicationsTightly focused Gaussian beams are the cornerstone of traditional optical tweezers. Flat-top beams also enable consummate control of particles over a two-dimensional plane. The former depends on the intensity gradient, while the latter the phase gradient.
Fan Nan +5 more
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Intelligent Control for Deepwater Drilling Riser Disconnection and Recoil Considering System Uncertainty [PDF]
Shanghai Jiaotong Daxue xuebaoRecoil control for deepwater drilling riser system after emergency disconnection is a necessary technique in deepwater oil exploration. However, some dynamic parameters of the riser system are uncertain and difficult to measure, which poses severe ...
WANG Xianglei, LIU Xiuquan, LIU Zhaowei, CHANG Yuanjiang, CHEN Guoming
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Recoil control of deepwater drilling riser system based on optimal control theory [PDF]
Ocean Engineering, 2021 Abstract Recoil of deepwater drilling riser system is a problem to be solved in offshore oil and gas engineering. Previous study focuses on the recoil analysis of deepwater drilling riser system rather on its recoil control. A recoil control method is proposed based on optimal control theory in this paper.
Na Qiu, Yuanjiang Chang
exaly +2 more sources
Adaptive back-stepping control applied on octocopter under recoil disturbance [PDF]
Journal of Engineering Science and Military Technologies, 2017 Unmanned air vehicles such as quadcopters are wildly being used in research and academic projects in the field of aerospace. Whether the mission is to take photos and videos, or simply fly to a given place, the problem of stabilization needs to be ...
Guangxue ZHANG, Haithem Taha
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Cavity-Controlled Collective Scattering at the Recoil Limit [PDF]
Physical Review Letters, 2011 We study collective scattering with Bose-Einstein condensates interacting with a high-finesse ring cavity. The condensate scatters the light of a transverse pump beam superradiantly into modes which, in contrast to previous experiments, are not determined by the geometrical shape of the condensate, but specified by a resonant cavity mode.
Simone Bux +4 more
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Recoil Reduction Method of Gun with Side to Rear Jet Controlled by Piston Motion [PDF]
Symmetry, 2021 Excessive recoil severely restricts the loading of high-power traditional guns on modern vehicles. To reduce the recoil without breaking the continuous firing mode and reducing the projectile velocity, a recoil reduction method that controls the lateral ejecting of propellant gas by a piston was proposed.
Ming Qiu +3 more
openaire +1 more source