Sarvak Formation,a thick carbonate succession with the age of Middle Cretaceous,is one of the most significant hydrocarbon reservoirs in the Zagros basin.The Tang-e Solak section of the Sarvak Formation in the Bangest...Sarvak Formation,a thick carbonate succession with the age of Middle Cretaceous,is one of the most significant hydrocarbon reservoirs in the Zagros basin.The Tang-e Solak section of the Sarvak Formation in the Bangestan anticline with a total thickness of about 850 m has been studied,in order to determinate its microfacies types,depositional setting model and depositional sequences.展开更多
This paper proposes a novel distributed control method for surrounding a noncooperative target that has maneuverability by spacecraft formation.A relative orbit error dynamic model between the target and the formation...This paper proposes a novel distributed control method for surrounding a noncooperative target that has maneuverability by spacecraft formation.A relative orbit error dynamic model between the target and the formation is established dependent on a reference spacecraft under the 2-body assumption.To estimate and compensate for the target’s control input rapidly,a novel finite-time extended state observer is developed.It is stable in the sense of fast finite-time uniformly ultimately bounded stability.A fast terminal sliding mode controller is proposed for finite-time convergence of the system.Simulation examples are implemented to show the effectiveness of proposed algorithm.展开更多
基金funded by the department of geology,Islamic Azad University,Science and Research branch,Tehran,Iran.
文摘Sarvak Formation,a thick carbonate succession with the age of Middle Cretaceous,is one of the most significant hydrocarbon reservoirs in the Zagros basin.The Tang-e Solak section of the Sarvak Formation in the Bangestan anticline with a total thickness of about 850 m has been studied,in order to determinate its microfacies types,depositional setting model and depositional sequences.
基金supported by the National Natural Science Foundation of China(nos.62273118,12150008,61973100,and 61876050).
文摘This paper proposes a novel distributed control method for surrounding a noncooperative target that has maneuverability by spacecraft formation.A relative orbit error dynamic model between the target and the formation is established dependent on a reference spacecraft under the 2-body assumption.To estimate and compensate for the target’s control input rapidly,a novel finite-time extended state observer is developed.It is stable in the sense of fast finite-time uniformly ultimately bounded stability.A fast terminal sliding mode controller is proposed for finite-time convergence of the system.Simulation examples are implemented to show the effectiveness of proposed algorithm.
