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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·信息与通信工程]]></title>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Dynamic sliding mode stabilization control for nonminimum phase hypersonic vehicle]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405007]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the zero dynamic instability caused by nonminimum phase property of hypersonic vehicles, a model transformation method based on the B-I (Byrnes-Isidori) standard form was proposed to achieve decoupling of internal and external dynamics of the system. A dynamic integral sliding mode stabilization control method was proposed, an augmented closed-loop system with internal dynamics, external dynamics and dynamic parameters was formed. A sliding mode parameter tuning method was proposed to make the augmented system remain dynamic stable under different operating conditions and perturbation conditions, and the trimmed point of external output was always zero. The proposed method could accurately track the output trajectory command with zero dynamic stability, and realize the longitudinal trajectory stability tracking control of nonminimum phase hypersonic vehicle. Lyapunov stability analysis was used to prove the stability of the proposed control method, and constant dynamic pressure trajectory tracking and Monte Carlo simulations were carried out. Simulation results show that the dynamic integral sliding mode control method maintains good tracking accuracy and robustness under perturbation conditions, and stabilizes the zero dynamics of the system effectively.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[WANG Yuxiao, FENG Hang, ZHAO Yuyu, SUN Mingwei]]></author>
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<atom:name>WANG Yuxiao, FENG Hang, ZHAO Yuyu, SUN Mingwei</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405007]]></guid><cfi:id>8</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Sub-global parallel optimization design of servo performance of electric cylinder lifting mechanism]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405008]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the influence of the nonlinear part of the electric cylinder lifting servo mechanism on the servo performance of the weapon station, the optimization method of servo performance was studied based on the application background. The mechanism of gain fluctuation, gap width, unbalanced moment, and friction moment in the designable nonlinear part was analyzed. The mathematical models, design constraints, and objective optimization functions of kinematics, dynamics, and control strategies were established based on the mechanism layout and controller parameters. A sub-global parallel optimization method was proposed. The multi-objective optimization based on the interior point method was carried out for the designable nonlinear part, and the local optimization problem of local serial optimization was solved. The composite control strategy based on PI controller + DOB observer was designed separately, and the mismatch between the mechanical inertia parameters, controller parameters, and observer nominal model was solved. It is verified that the optimization results of the sub-global parallel optimization method are better on the whole and more in line with the engineering practice.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[WAN Ziping, XIE Xin, REN Guang′an, ZHENG Jieji, FAN Dapeng]]></author>
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<atom:name>WAN Ziping, XIE Xin, REN Guang′an, ZHENG Jieji, FAN Dapeng</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405008]]></guid><cfi:id>7</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Cascading failure model for multi-level interdependent networks based on delay distribution under load target]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405009]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In the multi-level interdependent network where the target node was under load, in order to prevent the occurrence of large-scale cascading failures, enhance the robustness of the network and improve the efficiency of load completion, a cascading failure model with adjustable parameters was proposed. New initial loads and node capacities were set in this model, a load delay distribution mechanism was constructed and load redistribution rules were formulated on the basis of the heterogeneity and uniformity of load distribution. The cascading failure conditions of this model were analyzed and parsed, and simulation experiments were carried out through the WS-BA interdependent network. The results show that under a certain network capacity, the robustness and efficiency of the network can be improved by reasonably adjusting the heterogeneity and uniformity parameters.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[ZHANG Jiarui, HUANG Jian, GAO Jialong]]></author>
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<atom:name>ZHANG Jiarui, HUANG Jian, GAO Jialong</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405009]]></guid><cfi:id>6</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Adaptive energy detection with joint wavelet-frequency domain transform]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405010]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Traditional energy detection method is susceptible to the interference of low SNR(signal-to-noise ratio) environment in the field of spectrum sensing, and neglecting the localization of available spectrum could also affect the discriminative results of spectrum states. In order to improve the noise sensitivity and discrimination accuracy of energy detection, an adaptive energy detection method by combining wavelet-frequency domain transform was proposed. Signal was decomposed by discrete wavelet packet transform to calculate the sub-band energy; the computational complexity of the adaptive threshold was reduced by combining the norm of energy so as to facilitate comparison with the sub-band energy; the available spectrum was located by fast Fourier transform. And the method was simulated to explore the variable relationship between the adaptive threshold and different performance parameters. Simulation results show that the method has good environmental adaptability and system stability, while the detection error is smaller in different SNR environments. In addition, the frequency domain analysis of the sub-band signal to achieve the reordering of the normalized frequency range, which further improves the accuracy of spectrum sensing.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[HE Jiai, LI Zhixin, WANG Chanfei, ZHANG Xiaolin]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>HE Jiai, LI Zhixin, WANG Chanfei, ZHANG Xiaolin</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405010]]></guid><cfi:id>5</cfi:id><cfi:read>true</cfi:read></item>
<item>
<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Simulation analysis of detecting capability of infrared system for fight plane]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405011]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[After establishing the infrared radiation ellipsoid modal of plume, the way for calculating IR (infrared radiation) of the fight plane was improved and the space distribution curve of IR in the 3～5 μm band of a certain type of fight plane was obtained. The curve showed that there were four directions which had the same maximum IR at the plane nose and the plane rear. Considering the IR absorption of O<sub>3</sub> in the 3～5 μm band, the IR transmitting obstruction by the ground and the detecting object in outer atmosphere. The IR atmosphere transmitted model in the 3～5 μm band was further improved with the concept of the IR transmission distance in the atmosphere.Taking the infrared system constructed by two kinds of infrared detectors with different normalized detection degrees as an example, the curve of the operating distance to fight plane varying with the detection direction was simulated. The calculation results show that the extreme value of the operating distance for the infrared system to the fight plane is not in the direction of the extreme value for the IR of the fight plane, and when the operating distance of the system is long, the influence of atmospheric attenuation on the operating distance will exceed the influence of the IR of the fight plane.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[WANG Liang, TONG Zhongcheng, WU Jun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WANG Liang, TONG Zhongcheng, WU Jun</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405011]]></guid><cfi:id>4</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[High-precision constant pressure control of gas in variable leakage chamber]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405012]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[In precise testing and control occasions, a stable air pressure supply is often required. However, the use of pressure regulating valves has low accuracy and slow response, which cannot meet the requirements of high-precision air supply and is difficult to deal with leakage situations. A high-precision constant pressure control system based on Fuzzy PI was designed for small volume chambers by using a proportional valve with high frequency response. In order to verify the effectiveness of the system under leakage conditions, an additional proportional valve was connected to the chamber to carry out a series of experimental studies under three conditions of confinement, constant leakage, and variable leakage.The results showed that the designed constant pressure control system can adapt to a variety of harsh operating conditions. The maximum steady-state errors of the pressure control for the 10 L, 20 L and 30 L chambers were around 610 Pa, 550 Pa and 490 Pa under the condition of greatly varying leakage, respectively. The pressure control precision achieved was close to the precision of the pressure sensor itself, much higher than the precision regulated by the traditional precision pressure reducing valve, and much faster in response. In addition, the test results also showed that the designed controller has good adaptability to the chambers with a volume range of 10 L to 30 L.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[PU Chenwei, LUO Hui, WU Jie, LIU Lei, QIAN Pengfei]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>PU Chenwei, LUO Hui, WU Jie, LIU Lei, QIAN Pengfei</atom:name>
</atom:author>
<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405012]]></guid><cfi:id>3</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Blind detection method of weak target echo in GNSS-R passive radar]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405013]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[Aiming at the problem that the dual-channel configuration of the traditional GNSS-R(global navigation satellite system-reflected) passive radar system has a large amount of computation in signal processing and a high hardware cost in engineering implementation, a blind detection method of the weak target echo of single-channel GNSS-R passive radar based on higher-order cyclic cumulant was presented. Strong direct wave signal was extracted from the single-channel mixed signal using the principal component analysis method. Higher-order cyclic frequency of weak target echo was estimated by higher-order cyclic frequency of direct wave signal. Weak echo signal was extracted from the single-channel mixed signal based on its different characteristics of higher-order cyclic frequency from other signals, so that the object detection was realized by matched filtering. Simulation results show that the proposed method can effectively extract the weak target echo without prior information, and has better target detection performance compared with the traditional two-dimensional matched filter target detection method.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[WEN Yuanyuan, BAI Lin, SHANG She, SONG Dawei, WANG Jun]]></author>
<atom:author xmlns:atom="http://www.w3.org/2005/Atom">
<atom:name>WEN Yuanyuan, BAI Lin, SHANG She, SONG Dawei, WANG Jun</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405013]]></guid><cfi:id>2</cfi:id><cfi:read>true</cfi:read></item>
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<title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text"><![CDATA[Dynamic modeling and analysis of carrier-based aircraft and arresting hook]]></title>
<link><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405014]]></link>
<description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"><![CDATA[To study the influence of dynamic characteristics of the arresting hook of carrier-based aircraft on arresting results, the rigid body dynamics model of the plane motion carrier-based aircraft was established. The rigid body dynamics model of the spatial motion arresting hook was established considering the effect of longitudinal cushioning of the arresting hook. Lagrange′s equation of first kind was employed to establish the revolute joint model of the carrier-based aircraft and the arresting hook, and then the dynamics models of the system consists of the carrier-based aircraft and its arresting hook were established. The models were united with dynamics model of arresting gear to form the complete blocking dynamic simulation model. The experiment of the arresting process of aircraft was carried out. The experiment results and simulation results of the arresting process were compared and analyzed. The results demonstrate the effectiveness and accuracy of the dynamics model of the carrier-based aircraft and arresting hook, and reveal the significant influence of characteristics of the arresting hook on arresting overload.]]></description>
<pubDate>2024/9/29 0:00:00</pubDate>
<category><![CDATA[控制科学与工程·信息与通信工程]]></category>
<author><![CDATA[DING Zhishen, OUYANG Bin, LIU Yong]]></author>
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<atom:name>DING Zhishen, OUYANG Bin, LIU Yong</atom:name>
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<guid><![CDATA[http://journal.nudt.edu.cn/gfkjdxxben/article/abstract/202405014]]></guid><cfi:id>1</cfi:id><cfi:read>true</cfi:read></item>
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