Results 21 to 30 of about 271 (131)

Event-Triggered Supercavitating Vehicle Terminal Sliding Mode Control Based on Non-Recursive Observation

Journal of Marine Science and Engineering
Supercavitating vehicles present significant issues in controller design due to their multiphase flow-coupling characteristics. This study addresses force analysis and the construction of a 6-degree-of-freedom mathematical model for a supercavitating ...
Zichen Zhang, Xiaogang Wang, Zhicheng Wang, Shuai Wang   +3 more
doaj   +2 more sources

Experimental study on dynamic buckling phenomena for supercavitating underwater vehicle

International Journal of Naval Architecture and Ocean Engineering, 2012
Dynamic buckling, also known as parametric resonance, is one of the dynamic instability phenomena which may lead to catastrophic failure of structures. It occurs when compressive dynamic loading is applied to the structures.
Minho Chung, Hee Jun Lee, Yeon Cheol Kang, Woo-Bin Lim, Jeong Ho Kim, Jin Yeon Cho, Wanil Byun, Seung Jo Kim, Sung-Han Park   +8 more
doaj   +2 more sources

Design of a Sliding Mode Controller for Lateral Motion Control of a Supercavitating Vehicle Based on a Radial Basis Function Neural Network Observer

Journal of Marine Science and Engineering
Newton’s second law has been applied to create a dynamic model of the lateral motion of a supercavitating vehicle, assuming a stable cavity. However, some states cannot be measured, and there is uncertainty in the lateral model.
Shangze Chen, Xinhua Zhao, Xiufen Ye
doaj   +2 more sources

Heterogeneous Coupled Control of Ventilated Supercavitating Vehicles

Journal of Marine Science and Engineering
This study addresses the control challenge of ventilated supercavitating vehicles during depth-change maneuvers, where variations in speed and depth induce unsteady cavity evolution and nonlinear planing forces.
Jiayi Han, Bin Liu, Jiangtao Xu, Yu Fu, Xufeng Huang, Tianyi Zhao   +5 more
doaj   +2 more sources

Control of switched systems with delayed states: A direct AFSMC approach

IET Control Theory &Applications, Volume 17, Issue 1, Page 1-18, January 2023., 2023
Abstract This research focuses on controlling a class of MIMO state‐delayed nonlinear systems with switching conditions that depend on the delayed states. The key concept is to consider the dynamic changes brought by switching between sub‐systems as an uncertainty bounded by a certain polynomial of the delayed states norm.
Amir Hossein Davaie Markazi, Mohsen Khodadadi   +1 more
wiley   +1 more source

Design of Particle Swarm Optimization Adaptive Sliding Mode Controller Based on an Extended State Observer for the Longitudinal Motion of a Supercavitating Vehicle with Input Saturation

Journal of Sensors, Volume 2023, Issue 1, 2023., 2023
The aim of this paper is to present a novel sliding mode control scheme for the supercavitating vehicle trajectory tracking problem that subjects to external disturbances and actuator saturation with two symmetric elevators and a cavitator as actuators by analytical methods and computer simulations. Firstly, the nonlinear and highly coupled dynamic and
Guang Yang, Faxing Lu, Ling Wu, Junfei Xu, Nageswara Lalam   +4 more
wiley   +1 more source

Composite Terminal Guidance Law for Supercavitating Torpedoes with Impact Angle Constraints

Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022
A novel composite terminal guidance law with impact angle constraints is proposed for supercavitating torpedoes to intercept maneuvering warships. Based on an adaptive super‐twisting algorithm and nonsingular terminal sliding mode (NTSM), the proposed guidance law can guarantee the finite‐time convergence of line‐of‐sight (LOS) angle error and the LOS ...
Dongxue Xu, Jingyuan Zhang, Peng Wang, Xiaojia Yan, Haidi Dong, Xingling Shao   +5 more
wiley   +1 more source

Analysis and Calculation of the Best Center of Mass for Supercavitating Projectile

Journal of Sensors, Volume 2022, Issue 1, 2022., 2022
Currently, the supercavitating projectiles mostly rely on experience or experimental results to test the shape of the projectile; however, the cost of the experiment is relatively high, and there is no specific criterion to judge whether the underwater projectile is stable.
Ping Wei, Shoufa Wang, Wenrong Yan, Xin Yu, Guolong Shi   +4 more
wiley   +1 more source

Bow and Stern Control Surface’s Effectiveness and Influence on Supercavity

Journal of Sensors, Volume 2021, Issue 1, 2021., 2021
The numerical model of supercavitating flow field was established based on multiphase model, cavitation model, and turbulence model. The model was employed to simulate the supercavitation flow for the supercavitating vehicle with two types of control surfaces: bow rudder and stern rudder.
Ping Wei, Wenrong Yan, Shoufa Wang, Xin Yu, Min Xia   +4 more
wiley   +1 more source

Predictive Control of a Supercavitating Vehicle Based on Time-Delay Characteristics

IEEE Access, 2021
Supercavitation technology can greatly improve the speed of underwater vehicles by reducing drag. However, the time-delay characteristic of a supercavitating vehicle presents control challenge.
Yuntao Han, Zhen Xu, Lianwu Guan
doaj   +1 more source