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2022 International Conference on Signal Processing and Communication technology, SPCT 2022

作者： Gao, Shuai He, Tao Key Laboratory of Optoelectronic Technology and Intelligent Control Ministry of Education Lanzhou Jiaotong University China Institute of Automatic Control Lanzhou Jiaotong University China

ISBN: (纸本)9781510664333

With the vigorous promotion of railway infrastructure construction in China, higher requirements have been put forward for railway running safety. Railway signal monitoring equipment, as the key equipment to ensure driving safety, find and solve the fault, has a broad development prospect in the process of railway system modernization[1]. By analyzing the practical significance of railway signal training system and referring to the technical conditions of railway signal centralized monitoring system, the DC switch acquisition module of railway signal training system is developed and designed based on the microcontroller of Cortex-M4 kernel. The acquisition board has unique advantages in power consumption, acquisition speed and scalability, high integration, good reliability, its accuracy and stability meet the requirements of railway signal training, has a broad space for development, and is of great significance for the pre-job training of railway related majors and the improvement of teaching quality. © 2023 SPIE.

关键词： Railroads

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System Architecture and Evaluation Method of Human-machine Collaboration in Flight control System 34th

System Architecture and Evaluation Method of Human-machine C...

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34th Congress of the International Council of the Aeronautical Sciences, ICAS 2024

作者： Che, Jun Chen, Xiaolong Che, Shiqi Li, Jia Sun, Zhangjun Flight Automatic Control Research Institute AVIC Shaanxi Xi’an China Science and Technology on Aircraft Control Laboratory FACRI Shaanxi Xi’an China Northwestern Polytechnical University Shaanxi Xi’an China

The application of artificial intelligence makes the collaboration between machine and human closer in the future. How to build the architecture of human and machine collaboration and evaluate the profit of human and machine collaboration is the premise of promoting the effective application of artificial intelligence in flight control system. The paper proposes an architecture of human and machine collaboration, focusing on the method based on human-machine cognition and behavioral ability evaluation, and how to make task allocation between human and machine through the analysis of man-machine ability expertise and collaboration efficiency. Using NASA-TLX scale and objective metrics, an example of allocating the human and machine tasks during the design process of the flight control system using this architecture is proposed in the paper, showing the effectiveness of the architecture. © 2024, International Council of the Aeronautical Sciences. All rights reserved.

关键词： NASA

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Segmentation of railway region of interest based on image recognition 2

Segmentation of railway region of interest based on image re...

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2nd International Conference on Algorithms, Microchips, and Network Applications, AMNA 2023

作者： Gao, Hailong He, Tao Key Laboratory of Optoelectronic Technology and Intelligent Control Ministry of Education Lanzhou Jiaotong University China Institute of Automatic Control Lanzhou Jiaotong University China

ISBN: (纸本)9781510664791

In recent years, with the continuous progress of China's high-speed railway construction, railways play an important role in the country's economic development and provide a strong driving force for people to live a better life. The country has put forward higher requirements for train running safety. Track foreign body intrusion is one of the important factors threatening the safe running of trains. In order to ensure the safe operation of the train, the detection of foreign body intrusion on the track has become the top priority. It is necessary to further narrow the detection scope in the actual railway scene graph,and only need to detect whether there is a foreign object invasion in the region of interest. Therefore, the division of the railway area of interest is particularly important. In this paper, the improved Sobel image edge detection algorithm is used for edge detection. The least square method cubic polynomial was used for track line fitting. The track line is translated outward to obtain the region of interest. The division of the region of interest improves the accuracy of the prediction. © 2023 SPIE.

关键词： Least squares approximations

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On the optimality of uniform velocity-deceleration separation scheme for tethered satellite systems

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control Theory and technology 2024年第4期22卷 503-516页

作者： Peng Yu Ji-Feng Zhang Shuping Tan Jin Guo Yanlong Zhao School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Knowledge Automation for Industrial Processes Ministry of EducationBeijing100083China Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing100190China Beijing Institute of Control Engineering Beijing100094China

For mitigating the libration angle fluctuation of the tethered satellite system,this paper discusses how to make the uniform velocity-deceleration separation scheme achieve the best ***,a judgment condition is established to determine the tether state by comparing the tether length and the relative distance of the sub-satellite and the parent *** on the tethered satellite system dynamics equation and Clohessy-Wiltshire equation,dynamic models are given for four cases of tether ***,the influence of the uniform velocity-deceleration separation scheme on the libration angle is analyzed by taking the libration angle at the separation ending time and the mean absolute value of the libration angle as index ***,the optimality problem of the uniform velocity-deceleration separation scheme is formulated as an optimization problem with constraints,and an approximate solution algorithm is given by combining the back propagation neural network and Newton-Raphson method of multiple initial ***,the effectiveness of the proposed method is verified by a numerical simulation.

关键词： Tethered satellite systems Libration angle Uniform velocity-deceleration separation Neural network

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Accuracy and cross-sensitivity analysis of the PMS5003 formaldehyde sensor 27

Accuracy and cross-sensitivity analysis of the PMS5003 forma...

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27th IEEE Signal Processing: Algorithms, Architectures, Arrangements, and Applications, SPA 2024

作者： Bronczyk, Karolina Adamski, Michal Dabrowska, Agata Konieczka, Adam Dabrowski, Adam Adam Mickiewicz University Faculty of Chemistry Department of Trace Analysis Poznań Poland Poznan University of Technology Division of Electronic Systems and Signal Processing Institute of Automatic Control and Robotics Poznań Poland

ISBN: (纸本)9788362065486

Measurement data produced with the PMS5003 electrochemical sensor, allegedly selective for formaldehyde, were analyzed. The amounts of formaldehyde released from heated standard solutions were measured. At the same time, samples were sorbed into sorption tubes with an XAD-2 cartridge, which enabled chromatographic analysis - gas chromatography coupled with an electron capture detector (GC-ECD). A susceptibility of the PMS5003 sensor to cross-sensitivity associated with the presence of other low-molecular-weight carbonyl compounds, such as acetaldehyde and acetone in the sample, was also tested. The conducted research clearly indicates poor selectivity/accuracy of the PMS5003 sensor in relation to formaldehyde and its sensitivity to the presence of other carbonyl compounds in the sample, with a structure similar to formaldehyde. © 2024 Division of Signal Processing and Electronic systems, Poznan University of technology (DSPES PUT).

关键词： Acetone

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The Progress and Intelligent control/Decision Technical Discussion on Hypersonic Morphing Flight Vehicle

The Progress and Intelligent Control/Decision Technical Disc...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Zhang, Yuan Bai, Wenyan Huang, Wanwei Nie, Ying Huang, Xu Beijing Aerospace Automatic Control Institute Beijing100854 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China

ISBN: (纸本)9789811966125

For the hypersonic morphing flight vehicle (HMFV) dynamic strong uncertainty, time-varying, integration of control and decision problem, the engineering application requirements and difficulties are analyzed, and three feasibility schemes of control/decision are presented. Firstly, the significance, classification and development of morphing aircrafts are summarized;secondly, combining with the engineering needs, some detailed discussion on research challenges and key points are provided;thirdly, focusing on the HMFV control and decision problem, three general schemes for the HFMV control and decision issues are presented, including the intelligent anti-disturbance rejection control schemes, the high-precision control with RBF neural network scheme, and the intelligent control/decision integration scheme;finally, the paper is summarized and the further research directions are discussed. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Reinforcement learning

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Distance image piecewise adaptive weighted fusion algorithm based on TOF and binocular vision 3

Distance image piecewise adaptive weighted fusion algorithm ...

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3rd International Computing Imaging Conference, CITA 2023

作者： Yong, Zhang Jinmeng, Zhang Manguo, Liu Wei, Yuan Zhen, Yang Dan, Jiao Jianlong, Zhang National Key Laboratory of Science and Technology on Tunable Laser Harbin Institute of Technology Harbin China Xi'an Modern Control Technology Research Institute Xi'an China Beijing Aerospace Automatic Control Institute Beijing China

ISBN: (纸本)9781510671409

3D imaging technology has wide applications in fields such as autonomous driving and engineering surveying. Among them, TOF (Time of Flight) 3D and binocular vision 3D imaging technology are the two most commonly used methods. This study investigated the influence of distance and light intensity on the ranging accuracy of TOF and binocular vision imaging methods theoretically and experimentally. An adaptive weighting-based high-precision range image generation method for the entire range was proposed. The basic idea was to assign different weights to the TOF range image and binocular vision range image at different distance intervals and use the prior weight fitting results at different light intensities and distances to guide the weighted processing of each point of the range image. And then high-precision range imaging results with higher ranging accuracy than the original TOF image and binocular vision imaging were obtained. The PSNR value increased by an average of 7.15% compared to binocular vision and increased 1.17% compared to TOF. Distance error MSE value decreased by an average of 34.76% compared to binocular vision and decreased 7.87% compared to TOF. Experimental results demonstrated the effectiveness of the proposed method, which provided a useful idea and means for further improving the ranging accuracy of existing range imaging methods. © 2023 SPIE.

关键词： Binocular vision

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State estimation for delayed switched positive systems: delayed radius approach

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Science China(Information Sciences) 2024年第8期67卷 190-205页

作者： Weizhong CHEN Zhongyang FEI Xudong ZHAO Zheng-Guang WU School of Electronics and Information Xi'an Polytechnic University Research Institute of Intelligent Control and Systems Harbin Institute of Technology Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education Dalian University of Technology School of Control Science and Engineering Dalian University of Technology State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and ControlZhejiang University

In this paper, an interval estimation scheme is developed for delayed switched positive systems（DSPS） with mode-dependent average dwell time switching. A lossless zonotopic estimation approach is proposed for the delayed intersection zonotope with the positive generator matrix. First, considering the existence of asynchronism between the system mode and the correction matrix mode, the mismatched intersection zonotope is constructed for DSPS to verify the consistency between the system model and ***, by utilizing the introduced radius definitions, the ?∞performance is addressed to optimize the size of delayed intersection zonotopes. Subsequently, we present a joint-design approach of switching signals and the mode-dependent correction matrix by constructing positive generator matrix-based delayed radius functions. Furthermore, guaranteed nonnegative state bounds are derived for the considered DSPS based on the proposed lossless zonotopic estimation criteria. Finally, detailed simulations are conducted to validate the feasibility and superiority of the developed methods.

关键词： delayed switched positive systems interval estimation asynchronous correction matrix zonotopes mode-dependent average dwell time

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Shallow Sleep control Management for Low-Power Rockets 9

Shallow Sleep Control Management for Low-Power Rockets

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9th International Conference on Advances in Machinery, Materials Science and Engineering Applications, MMSE 2023

作者： Zhang, Ying Sun, Kai Beijing Aerospace Automatic Control Institute Beijing100854 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China

ISBN: (纸本)9781643684383

In this paper, a control method for shallow sleep management of low-power rockets is studied, and three sleep modes are verified for shallow sleep, and the optimal adaptation of shallow sleep of rockets with minimum power consumption of 16 watts is confirmed In different application environments, multi-mode operation with low power consumption is realized, so as to achieve the goal of long life under the requirements of long-term power up. The low-power mode can make the system run more stably, help reduce system losses, effectively reduce the volume and weight of power supply equipment, and improve the carrying capacity of the rocket. In order to achieve the purpose of low power consumption, based on the principle of 'high and low matching', the performance matching of chips of different performance levels at their optimal working points is analyzed, and the low-power chip architecture design under different computing power requirements is realized, and experimental verification is carried out. © 2023 The Authors.

关键词： Electric power supplies to apparatus

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Modified Covariance Intersection-Based Sensor Fault Tolerance of a Gas Turbine Engine

Modified Covariance Intersection-Based Sensor Fault Toleranc...

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AIAA Science and technology Forum and Exposition, AIAA SciTech Forum 2025

作者： Chakraborty, Tirthankar Maity, Arnab Intelligent Systems and Control Lab Department of Aerospace Engineering Indian Institute of Technology Bombay Mumbai400076 India

ISBN: (数字)9781624107238

ISBN: (纸本)9781624107238

Fault tolerance is crucial in the design and operation of gas turbine engines, where even minor malfunctions can disrupt operations and compromise performance. This paper presents a modified covariance intersection-based decentralized estimator which can ensure uninterrupted operation amidst sensor failures. A network of sensor nodes within the engine is considered. Each node in the network computes a local state estimate, which is subsequently fused with the other node estimates at each time instant. The developed algorithm uses a novel weight adaptation scheme to fuse the node estimates and the associated covariances. The node weights are expressed as a function of the covariance matrix of the node estimate and a scaling matrix. This algorithm is tested through simulation by injecting faults in the sensors of a small-scale gas turbine engine primarily used for research, called the SR-30 engine. The simulation results illustrate the effectiveness of the proposed estimator in ensuring the integrity of the state estimates in the presence of drift and bias faults in the sensors. © 2025, American institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Gas turbines

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