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Optimal Design for Multi-response Experiments of USV Using Statistical Power 24

Optimal Design for Multi-response Experiments of USV Using S...

引用

8th International Conference on Computing and Data Analysis, ICCDA 2024

作者： Peng, Zeng Xiaodi, Zhu Chao, Wang Ruihan, Luo Yidan, Zhang Jin, Xie CSSC Systems Engineering Research Institute Beijing China

ISBN: (纸本)9798400710445

Designed experiments can be a powerful tool for gaining fundamental understanding of systems and processes. Many experiments on a system or process have multiple responses of interest, each with potentially different data types and hence underlying distributions. In development tests and operational tests, tests with multiple responses are common. Many tests have continuous responses, binary responses, and counting responses. However, due to limited conditions, it is impossible to conduct tests for different responses separately. Instead, a relatively optimal experimental design must be used to simultaneously test whether these responses meet specific index requirements. However, even based on the same optimization criterion, the optimal design for a normal response may be very different from the optimal design for a non-normal response. This work presents a new approach to experimental designs for multi-response systems. The normal, binomial and Poisson distributions are considered as potential responses. This method further adds the statistical power optimization criterion on the basis of the weighted D-optimal design criterion, which can take into account the D-optimal design efficiency and statistical power of the experimental design and achieve the optimal design of multi-response experimental problems. The statistical power of normal and non-normal responses is evaluated by analytical method and Monte Carlo method respectively, and is implemented in the point exchange algorithm. The method is demonstrated and illustrated through a case study of experimental design for testing the detection performance of an unmanned surface vessel(USV) against an aerial target. © 2024 Copyright held by the owner/author(s).

关键词： Poisson distribution

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An Improved A* Algorithm for Ocean-Going Vessels to Avoid Dynamic Time-Varying Obstacle Areas

An Improved A* Algorithm for Ocean-Going Vessels to Avoid Dy...

引用

2024 China Automation Congress, CAC 2024

作者： Zhao, Yijian Li, Gaolei CSSC Systems Engineering Research Institute Beijing China

ISBN: (纸本)9798350368604

At present, ocean-going vessels typically rely on static and dynamic environmental information obtained from meteorological forecasts for path planning. However, there is no optimal global path planning algorithm that can balance the computational speed and avoiding of dynamic obstacles. A brief overview of the commonly used A* algorithm and other popular path planning algorithms is given in the paper, and an improved A* algorithm is proposed. By employing the Probabilistic Roadmap Method (PRM) for mapping, the proposed algorithm enhances the capability to handle continuous spaces and increases flexibility in path planning. Furthermore, during the search process, the algorithm incorporates an assessment of the suitability of points to be explored at subsequent steps, enabling ocean-going vessels to rapidly plan the shortest path that avoids dynamic time-varying obstacle areas. © 2024 IEEE.

关键词： Motion planning

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research on Laser Divergence Angle Measurement Method in Free Space for Large Optical Beam 2

Research on Laser Divergence Angle Measurement Method in Fre...

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2nd IEEE International Conference on Image Processing and Computer Applications, ICIPCA 2024

作者： Yu, Longfei Liu, Xinghua Tang, Ping Cssc Systems Engineering Research Institute Shanghai China

ISBN: (纸本)9798350360240

This paper presents the design of a semiconductor laser power measurement circuit for specific wavelength and emission angle. The design encompasses three main components: a free-space optical power meter positioning device, an optical power meter, and a power supply and communication device for the optical power meter. Grounded in the principles of free-space optical measurement, this method combines measurement techniques with instrumentation to quantify the laser power at a specific wavelength and spatial position. Leveraging a microcontroller-based signal processing system, it assesses performance metrics such as laser divergence angle, uniformity, and power. The proposed optical power measurement device is characterized by its user-friendly operation, high level of visualization, and structural reliability, making it a valuable tool in the field of optical measurement instruments. © 2024 IEEE.

关键词： Semiconductor lasers

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Tuning of PID Controller for Unstable Time Delay Process with Multiple Constraints Using a Novel Modified Cuckoo Search Algorithm 7

Tuning of PID Controller for Unstable Time Delay Process wit...

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7th IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2024

作者： Su, Qixin Ma, Mengyin Ma, Junbang Zhang, Haotian Wang, Baiqi Cssc Systems Engineering Research Institute Beijing China

ISBN: (纸本)9798350370782

Currently, the PID (Proportional-Integral-Derivative) controller parameters tuning method for unstable time delay process have not been studied intensively. Meanwhile, there is no a general tuning method for the unstable time delay process in the presence of multiple constraints. In the view of above situations, we firstly propose a novel modified cuckoo search (CS) algorithm for the unstable time delay process with multiple constraints. In the proposed algorithm, we apply the heavy-tailed t-distribution sequence to initialize the population. To further improve the search performance, the advantages of the particle swarm optimisation (PSO) algorithm was adopted to optimize search strategy. By using these two improvements, the novel modified CS algorithm can provides more accurate PID parameter estimates. Simulation examples show that the proposed method is effective and has a wide applicability. © 2024 IEEE.

关键词： Particle swarm optimization (PSO)

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Multi-agent Hybrid Architecture Design for Naval Warfare Game 3rd

Multi-agent Hybrid Architecture Design for Naval Warfare Gam...

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3rd International Conference on Autonomous Unmanned systems, ICAUS 2023

作者： Li, Xing Zhang, Pengyi Gu, Qijia Su, Jian Li, Jingyi CSSC Systems Engineering Research Institute Beijing China

ISBN: (纸本)9789819711062

Aiming at the needs of multi-agent confrontation games in the complex wide-area environment at sea, this paper proposes a multi-agent construction idea driven by knowledge rules and data learning, and designs a hybrid-driven multi-agent software framework. The overall software framework is modularized based on knowledge rules, and core action decisions are constructed based on data learning methods. In the end, a multi-agent instance was built, and the counterparty was built for confrontation verification in the sea scene. © Beijing HIWING Scientific and Technological Information institute 2024.

关键词： Learning systems

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Study on Shutter Heating Performance of Gas Turbine Intake System 2

Study on Shutter Heating Performance of Gas Turbine Intake S...

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2nd International Symposium on Frontiers of Mechanical and Material engineering, MME 2024

作者： Zhai, Bin Yang, Xing Yang, Fuzheng Chen, Kunyi Wei, Yucheng Wang, Jianhua Systems Engineering Research Institute of CSSC Beijing100094 China

Aiming at the anti-icing and de-icing requirements of gas turbine intake system, study the heating performance of a typical shutter vane, and compares and analyzes the influence of different ambient temperature and different electrothermal pipe heat generation rate on vane temperature distribution and heat transfer characteristics. The results show that the air convection at different positions on the blade surface of the louver leads to the difference in the temperature distribution of the upper and lower surfaces of the blade, as well as the leading edge and trailing edge of the blade, and the leading edge of the blade, as the area with the lowest overall temperature distribution of the blade, should be focused on in the design of anti-icing and de-icing systems. Increasing the heat production rate of the electric heating tube, there is more heat flow near the midline of the blade, which makes the temperature rise at this position the highest, and it is necessary to pay attention to the energy waste and blade damage caused by local overheating of the blade. Therefore, when the ambient temperature increases from 245.15 K to 318.15 K, the leaf temperature increases from 248.73 K to 322.74 K, and the temperature rise also increases from 3.58 K to 4.59 K. The electrothermal technology can be used to the anti-icing and de-icing of the intake system shutters on the basis of choosing the heat generation rate of the electrothermal tube reasonably. © 2024 institute of Physics Publishing. All rights reserved.

关键词： Gas turbines

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Influence of Charging in Different Mediums on the Effectiveness of Warship's Side Destruction

Influence of Charging in Different Mediums on the Effectiven...

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2024 International Conference on Mechatronics and Intelligent Control, ICMIC 2024

作者： Zhang, Bing Shi, Rui Wang, Xinyu Cai, Zilei Du, Yining Zhang, Wenyi CSSC Systems Engineering Research Institute Beijing Beijing100094 China

ISBN: (数字)9781510686847

ISBN: (纸本)9781510686830

Warships have become an important combat force in the maritime battlefield environment, and how to carry out anti-warship missions based on existing warshipboard equipment has become the focus of the current combat application. This paper takes the foreign large-caliber naval gun ammunition as the research object, and analyses its destructive effect on warship targets. First of all, based on numerical simulation method to carry out naval gun munitions power modelling, and then analyze the effect of the fighting part of the role of the medium and the location of the explosion point on the warship target damage power. Simulation results show that: large-calibre naval artillery munitions have the ability to effectively damage the port side of the warship, and its destructive effect is mainly related to the explosive medium, explosion location and fuse action mechanism and other factors, so the proposed reasonable combat method in the field of anti-warship combat can achieve better performance, and effectively support the naval artillery weapon to carry out anti-warship tasks. © 2025 SPIE.

关键词： Ammunition

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research On Infrared Detection And Image Simulation Of Ships Applied To Underwater Unmanned Vehicles 5

Research On Infrared Detection And Image Simulation Of Ships...

引用

5th International Conference on Image, Video Processing, and Artificial Intelligence, IVPAI 2023

作者： Wang, Yanjie Liu, Guanshan Huang, Suhe Qin, Yichao Li, Zheng Liu, Jie Wang, Jing Ding, Yue CSSC Systems Engineering Research Institute Beijing100094 China

ISBN: (纸本)9781510674660

Underwater unmanned vehicles are important carriers for conducting ocean exploration activities, and surface vessels are the main detection objects for underwater unmanned vehicles to conduct surface exploration. This article takes surface ships as the research object, based on the basic radiation theory in physical optics, summarizes and analyzes the current research status of surface ship detection, and based on thermodynamic models, studies the modeling and simulation methods of the infrared radiation characteristics of ships themselves;Based on the environmental characteristics of ships in the marine environment, the modeling and simulation methods of infrared radiation reflected by ships in the environment were studied;Based on an atmospheric model, a simulation method for atmospheric transmittance during infrared radiation transmission was studied;Based on the linear quantization method, the modeling and simulation methods for infrared imaging of ship targets were studied, and the infrared simulation images of ships were obtained. The research and simulation results of the theoretical calculation model for the temperature field and infrared radiation characteristics of ship skin in this article have certain reference value in the research of infrared detection and recognition of underwater unmanned vehicles against ship targets. © 2024 SPIE. All rights reserved.

关键词： Infrared radiation

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Simulation of High Speed Water Entry with Gas Kinetics Scheme

Simulation of High Speed Water Entry with Gas Kinetics Schem...

引用

2023 International Joint Conference on Civil and Marine engineering, JCCME 2023

作者： Wang, Weimeng Liu, Rulei Li, Zhe Wang, Wei Xu, Puning Systems Engineering Research Institute of CSSC Tsinghua University Beijing China Systems Engineering Research Institute of CSSC Beijing China

ISBN: (纸本)9781839539954

Based on Gas Kinetics Scheme (GKS), the numerical simulation of high speed water entry is studied. In the process of the object entering water from the air at high speed, and the phenomenon of transmedium motion and cavitation occurs, involving two phases and three media of gas/vapor/water. In this paper, a two-phase and three-media compressible cavitation flow solver is developed, in which the gas/vapor/water are compressible and can effectively deal with the interaction between different media. In this paper, vertical entry into water of axisymmetric cylinder with flat head and 45° cone head is calculated. The calculation is simplified by axisymmetric method. This method can predict the generation, propagation and local high pressure induced by shock wave in the flow field, and then obtain the instantaneous load when the object enters the water. The cylinder generates a shock wave when entering the water, and gradually spreads to the distance. The intensity of the shock wave generated by the flat-head cylinder is much greater than that of the cone-head cylinder, and the cavity generated by entering the water will wrap the cylinder completely. A flat-head cylinder creates a larger cavity and exerts more pressure on its head, so the cylinder experiences greater resistance. Due to the very short time of water entry, cavitation almost did not occur in the early stage of water entry, and it was difficult to observe obvious cavitation. This study provides a reference for GKS method to study high-speed water entry motion. © The Institution of engineering & Technology 2023.

关键词： Cavitation

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A Neural Network-based Method for Tracking and Locating the Carrier-based Aircraft 11

A Neural Network-based Method for Tracking and Locating the ...

引用

11th Joint International Information Technology and Artificial Intelligence Conference, ITAIC 2023

作者： Zhao, Chong Shao, Yachao Yao, Dongyi CSSC Systems Engineering Research Institute Beijing China

ISBN: (纸本)9798350333664

In order to improve the efficiency and accuracy of information acquisition such as target position and azimuth of the Carrier-based aircraft, this paper proposes a target tracking and location method based on NeturalNetwork technology. This method uses deep learning technology to classify and locate the aircraft in the ship deck video, uses Hungarian algorithm to correlate and track targets, calculates target orientation, and uses BP neural network model to transform the physics coordinates. The experimental results show that this method can improve the real-time and accuracy of target position and azimuth information, and the accuracy of target recognition tracking and target orientation reaches 100%. © 2023 IEEE.

关键词： Carrier-based aircraft Deep learning Neural network target tracking

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