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<title cf:type="text"><![CDATA[Editorial department of the Journal of National University of Defense Technology -->控制科学与工程·数学与系统科学]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Altitude control of powered parafoil with wind feedforward compensation]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202403012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[The lift of the powered parafoil system is determined by the system′s airspeed, making it susceptible to external wind interference and the primary disturbance factor affecting the accuracy of the parafoil′s altitude tracking. To address this issue, an eight-degree-of-freedom model of the powered parafoil was established based on traditional active disturbance rejection control. An improved disturbance compensation controller was designed based on wind field feedforward compensation. The compensation for external wind disturbance was targeted. The altitude tracking control of the parafoil system was achieved. Based on preliminary verification of the controller through simulation experiments, actual flight experiments of the parafoil system were conducted. In the actual flight environment, the control parameters adjusted in the simulation can be directly applied to the actual flight experiments, and the average altitude tracking error of the paraglider system is within 2.5 m, which proving that the designed controller has some practical application value.]]></description>
<pubDate>2024/6/18 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·数学与系统科学]]></category>
<author><![CDATA[SUN Hao, SUN Qinglin, LU Weitao]]></author>
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<atom:name>SUN Hao, SUN Qinglin, LU Weitao</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Design, simulation and evaluation method for unmanned swarm system-of-system]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202403013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Unmanned swarm operation is becoming a new operation style that changes the shape of warfare. In response to the current problem that unmanned equipment experiments are relatively independent and lack of integrated closed-loop design and integrated verification means, a SoS(system-of-system) design, simulation and evaluation method was proposed. The method contains five stages:operational concept modeling and requirement analysis, SoS design concept and SoS design, infield simulation experiment and scheme exploration, SoS prototype development and evaluation optimization, and outfield integrated test and comprehensive decision. It innovates and develops theoretical methods, tool chains, and integrated environment for SoS design, simulation test, and evaluation optimization, which provides certain theoretical and technical support for the systematization intellectualization and actual combat of unmanned swarm.]]></description>
<pubDate>2024/6/18 10:27:57</pubDate>
<category><![CDATA[控制科学与工程·数学与系统科学]]></category>
<author><![CDATA[YANG Song, WANG Weiping, LI Xiaobo, ZHOU Xin, JING Tian]]></author>
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<atom:name>YANG Song, WANG Weiping, LI Xiaobo, ZHOU Xin, JING Tian</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Experiment on the noise reduction performance of gas-water cabin in the pipeline system of underwater vehicle]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202403014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[By integrating the working principles of water silencers with the pipeline system and water cabin characteristics of underwater vehicles, a gas-water cabin silencing method was proposed. Air with certain pressure and volume was filled into the water cabin to form an accumulator-type elastic-compressive expansion chamber silencing cavity, and the water cabin of the underwater vehicle was fully utilized to silence the sea pipeline. Experimental studies were conducted on the silencing principles and performance of the gas-water cabin. The results show that the flow and pressure pulsation at the pipeline outlet is effectively suppressed by the gas-water cabin, the noise propagation pathway of the pipeline is blocked and the underwater radiation noise of the pipeline system is reduced. This gas-water cabin provides a usefully approach on underwater radiation noise reduction of underwater vehicle.]]></description>
<pubDate>2024/6/18 10:27:57</pubDate>
<category><![CDATA[控制科学与工程·数学与系统科学]]></category>
<author><![CDATA[ZHANG Zuti, QIN Ziming, BAO Chunhang, HOU Lingfeng, SUN Kunjie, LONG Xinping]]></author>
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<atom:name>ZHANG Zuti, QIN Ziming, BAO Chunhang, HOU Lingfeng, SUN Kunjie, LONG Xinping</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Evolution permutation optimal Latin hypercube design method]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202403015]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Latin hypercube design is one of the most commonly used computer experimental design methods, in response to the problem of one-time sampling and difficulty in balancing spatial uniformity and computational efficiency in existing Latin hypercube design methods, an experimental design method of permutation evolution Latin hypercube was proposed. By evolving small-sample designs, inheriting and expanding permutation information, the expansion and optimization of samples were achieved with a relatively small computational effort. In addition, this method gives consideration to the relationship between existing samples and new added samples and realizes the sequence expansion of samples, which is very convenient in the actual approximate modeling process. Through several groups of numerical experiments, the advantages of this method in space filling quality and calculation efficiency were verified.]]></description>
<pubDate>2024/6/18 10:27:57</pubDate>
<category><![CDATA[控制科学与工程·数学与系统科学]]></category>
<author><![CDATA[LI Guosheng, ZHANG Xi, WEN Qian, YANG Jiawei, ZHANG Weihua, WU Zeping]]></author>
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<atom:name>LI Guosheng, ZHANG Xi, WEN Qian, YANG Jiawei, ZHANG Weihua, WU Zeping</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Distributed fixed-time convergence cooperative guidance law against communication delay]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202403016]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In order to make multiple missiles effectively complete the simultaneous attack of maneuvering targets in the presence of communication delay, a fixed-time convergence distributed cooperative guidance law against communication delay was proposed. Based on the framework of fixed time control technology, the guidance law can stabilize the time boundary independent of the initial state of multiple missile system and improved the control efficiency of multiple missile system. A fast non-singular terminal sliding mode and virtual leader were used to realize the guidance law′s robustness against communication delay. The Lyapunov stability theory was used to prove the consistency in fixed time. Simulation results show that under the condition of communication time delay, multiple missiles can effectively attack the target simultaneously based on the designed distributed cooperative guidance law.]]></description>
<pubDate>2024/6/18 10:27:57</pubDate>
<category><![CDATA[控制科学与工程·数学与系统科学]]></category>
<author><![CDATA[SHANG Weichen, MA Xiang, ZHENG Jiping, YU Hang, DAI Keren, ZHANG He]]></author>
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<atom:name>SHANG Weichen, MA Xiang, ZHENG Jiping, YU Hang, DAI Keren, ZHANG He</atom:name>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Automatic extraction method of TIN-DDM terrain feature line supported by rolling ball transform]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202403017]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In view of the problems in the traditional regular grid digital elevation model terrain feature line extraction method, such as the threshold is difficult to be adjusted quantitatively, the connection mode cannot be adjusted adaptively, and the type of terrain feature line is incomplete, an automatic extraction method of TIN-DDM (triangulated irregular network digital depth model) terrain feature line based on rolling ball transformation model was proposed. Based on the judgment criterion of a quantitative identification for terrain feature points associated with the critical rolling sphere radius, the concept of terrain shape boundary points was introduced, and the automatic extraction model of terrain feature lines based on subdivision unit was established according to the modeling idea of reverse engineering. Combined with the multi-scale expression characteristics of the terrain type judgment criteria and the terrain feature optimization model considering water depth values, an automatic extraction method of terrain feature lines that can be expressed at multiple scales and complete types was proposed. The experimental results show that compared with the classical surface water simulation method, this method can automatically extract complete, continuous, subdivided and multi-scale TIN-DDM terrain feature lines, and the generated terrain feature lines have higher terrain reconstruction accuracy.]]></description>
<pubDate>2024/6/18 10:27:57</pubDate>
<category><![CDATA[控制科学与工程·数学与系统科学]]></category>
<author><![CDATA[DONG Jian, ZHANG Zhiqiang, PENG Rencan, ZHOU Wei, JI Hongchao]]></author>
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<atom:name>DONG Jian, ZHANG Zhiqiang, PENG Rencan, ZHOU Wei, JI Hongchao</atom:name>
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