Based on the construction requirements of the "Emerging engineering"major in intelligent manufacturing engineering and the characteristics of interdisciplinary integration, the cultivation of high-quality in...
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Solid rocket motors have important applications in the propulsion of trans-media vehicles and underwater launched *** this paper,the ignition start-up process of an underwater solid rocket motor across a wide depth ra...
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Solid rocket motors have important applications in the propulsion of trans-media vehicles and underwater launched *** this paper,the ignition start-up process of an underwater solid rocket motor across a wide depth range has been numerically studied.A novel multi-domain integrated model has been developed by combining the solid propellant ignition and combustion model with the volume of fluid multiphase *** integrated model enables the coupled simulation of the propellant combustion and gas flow inside the motor,along with the gas jet evolution in the external water *** detailed flow field developments in the combustion chamber,nozzle,and wake field are carefully *** variation rules of the internal ballistics and thrust performance are also *** effects of environmental medium and operating depth on the ignition start-up process are systematically *** results show that the influence of the operating environment on the internal ballistic characteristics is primarily reflected in the initial period after the nozzle closure *** development of the gas jet in water lags significantly compared with that in *** the water depth increases,the ignition delay time of the motor is shortened,and the morphology evolution of the gas jet is significantly compressed and ***,the necking and bulging of the jet boundary near the nozzle outlet and the consequent shock oscillations are intensified,resulting in stronger fluctuations in the wake pressure field and motor thrust.
An entry guidance method that considers the terminal time constraint has been developed for hypersonic glide vehicles. A key insight underpinning this method is that the flight time becomes fixed once the vehicle'...
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An intelligent endo-atmospheric penetration strategy based on generative adversarialreinforcement learning is proposed in this ***,attack and defense adversarial mod-els are established,and missile maneuver penetratio...
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An intelligent endo-atmospheric penetration strategy based on generative adversarialreinforcement learning is proposed in this ***,attack and defense adversarial mod-els are established,and missile maneuver penetration problem is transformed into an optimal con-trol problem,considering penetration,handover position and mid-terminal guidance ***,Radau Pseudospectral method is adopted to generate data samples consideringrandom ***,Generative Adversarial Imitation Learning Combined withDeep Deterministic Policy Gradient method(GAIL-DDPG)is designed,with internal processreward signals constructed to tackle long-term sparse reward in missile manuver penetration ***,penetration strategy is trained and *** shows that using generativeadversarial reinforcement learning,with sample library to learn expert experience in training earlystage,the proposed method can quickly ***,performance is further optimized with rein-forcement learning exploration strategy in the later stage of *** shows that the pro-posed method has better engineering application ability compared with traditional reinforcementlearning method.
In agriculture, removing withered leaves is crucial for maintaining crop quality and preventing pests and diseases. This paper proposes a method for estimating the pose of wilted leaves and removing wilted leaves. Whi...
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There is a vast amount of environmental information in motion systems. The mode quarry matrix (MQM) is used to obtain the necessary information for motion control. Interaction mode control is one of the control method...
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In recent years, research in the field of robotics has made significant progress, especially in motion control. Mechanisms and control methods that enable robots to perform tasks like humans have been developed. Among...
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In this research, we deal with model predictive control problem with disturbances based on Signal Temporal Logic specifications. In this paper, we theoretically analyze the feasibility of model predictive control prob...
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In this paper, we study a consensus control problem for resilient multi-agent systems considering leader failure. We present cooperative control to solve the formation problem, enabling the agents to maintain relative...
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To develop a method for estimating age-related decline using the analysis of daily conversation characteristics of elderly individuals, we compared the conversation traits of elderly people living in serviced housing ...
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