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Готові списки джерел за темами / Electronic performance tracking systems / Статті в журналах

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Статті в журналах з теми "Electronic performance tracking systems"

Автор: Grafiati

Опубліковано: 10 січня 2023

Оновлено: 28 січня 2023

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1

Potsaid, Benjamin, John Ting-Yung Wen, Mark Unrath, David Watt, and Mehmet Alpay. "High Performance Motion Tracking Control for Electronic Manufacturing." Journal of Dynamic Systems, Measurement, and Control 129, no. 6 (March 2, 2007): 767–76. http://dx.doi.org/10.1115/1.2789467.

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Motion control requirements in electronic manufacturing demand both higher speeds and greater precision to accommodate continuously shrinking part/feature sizes and higher densities. However, improving both performance criteria simultaneously is difficult because of resonances that are inherent to the underlying positioning systems. This paper presents an experimental study of a feedforward controller that was designed for a point-to-point motion control system on a modern and state of the art laser processing system for electronics manufacturing. We systematically apply model identification, inverse dynamics control, iterative refinement (to address modeling inaccuracies), and adaptive least mean square to achieve high speed trajectory tracking. The key innovations lie in using the identified model to generate the gradient descent used in the iterative learning control, encoding the result from the learning control in a finite impulse response filter and adapting the finite impulse response coefficients during operation using the least-mean-square update based on position, velocity, and acceleration feedforward signals. Experimental results are provided to show the efficacy of the proposed approach, a variation of which has been implemented on the production machine.

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2

Linke, Daniel, Daniel Link, and Martin Lames. "Validation of electronic performance and tracking systems EPTS under field conditions." PLOS ONE 13, no. 7 (July 23, 2018): e0199519. http://dx.doi.org/10.1371/journal.pone.0199519.

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3

Fujioka, Hisaya, Chung-Yao Kao, Stefan Almér, and Ulf Jönsson. "Robust tracking with H∞ performance for PWM systems." Automatica 45, no. 8 (August 2009): 1808–18. http://dx.doi.org/10.1016/j.automatica.2009.03.026.

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4

Welch, Greg, Gary Bishop, Leandra Vicci, Stephen Brumback, Kurtis Keller, and D'nardo Colucci. "High-Performance Wide-Area Optical Tracking: The HiBall Tracking System." Presence: Teleoperators and Virtual Environments 10, no. 1 (February 2001): 1–21. http://dx.doi.org/10.1162/105474601750182289.

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Since the early 1980s, the Tracker Project at the University of North Carolina at Chapel Hill has been working on wide-area head tracking for virtual and augmented environments. Our long-term goal has been to achieve the high performance required for accurate visual simulation throughout our entire laboratory, beyond into the hallways, and eventually even outdoors. In this article, we present results and a complete description of our most recent electro-optical system, the HiBall Tracking System. In particular, we discuss motivation for the geometric configuration and describe the novel optical, mechanical, electronic, and algorithmic aspects that enable unprecedented speed, resolution, accuracy, robustness, and flexibility.

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5

Wang, Rijun, Yue Bai, Zhiqiang Zeng, Junyuan Wang, Wenhua Du, and Nengquan Duan. "Opto-electronic platform tracking control of multi-rotor unmanned aerial vehicles based on composite disturbance compensation." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 12 (January 10, 2019): 4410–20. http://dx.doi.org/10.1177/0954410018823623.

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Airborne opto-electronic platforms are very important in unmanned aerial vehicle systems. The stability and tracking performance of airborne opto-electronic platforms are easily affected by disturbance factors, making compensating for those disturbances a very prominent issue. In this paper, compared to the traditional disturbance observer, an improved velocity signal based disturbance observer (IVDOB) is particularly designed to compensate for the disturbance. Then its capability, robustness, and stability are discussed. For improving the stabilization accuracy and tracking performance of airborne opto-electronic platforms, the universal approximation property of fuzzy systems is used to compensate the disturbance further and an adaptive fuzzy control system based on IVDOBs is proposed. To validate the scheme, a series of experiments were carried out. The results show that the proposed control scheme can achieve reliable control precision and satisfy the requirements of airborne opto-electronic platform tasks.

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6

Bandodkar, Amay J., Philipp Gutruf, Jungil Choi, KunHyuck Lee, Yurina Sekine, Jonathan T. Reeder, William J. Jeang, et al. "Battery-free, skin-interfaced microfluidic/electronic systems for simultaneous electrochemical, colorimetric, and volumetric analysis of sweat." Science Advances 5, no. 1 (January 2019): eaav3294. http://dx.doi.org/10.1126/sciadv.aav3294.

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Wearable sweat sensors rely either on electronics for electrochemical detection or on colorimetry for visual readout. Non-ideal form factors represent disadvantages of the former, while semiquantitative operation and narrow scope of measurable biomarkers characterize the latter. Here, we introduce a battery-free, wireless electronic sensing platform inspired by biofuel cells that integrates chronometric microfluidic platforms with embedded colorimetric assays. The resulting sensors combine advantages of electronic and microfluidic functionality in a platform that is significantly lighter, cheaper, and smaller than alternatives. A demonstration device simultaneously monitors sweat rate/loss, pH, lactate, glucose, and chloride. Systematic studies of the electronics, microfluidics, and integration schemes establish the key design considerations and performance attributes. Two-day human trials that compare concentrations of glucose and lactate in sweat and blood suggest a potential basis for noninvasive, semi-quantitative tracking of physiological status.

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7

Ma, Ruicheng, Lulu Fu, and Jun Fu. "Prescribed-time tracking control for nonlinear systems with guaranteed performance." Automatica 146 (December 2022): 110573. http://dx.doi.org/10.1016/j.automatica.2022.110573.

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8

Kim, K. S. "Analysis of Optical Data Storage Systems—Tracking Performance With Eccentricity." IEEE Transactions on Industrial Electronics 52, no. 4 (August 2005): 1056–62. http://dx.doi.org/10.1109/tie.2005.851685.

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9

Berger, Thomas. "Tracking with prescribed performance for linear non-minimum phase systems." Automatica 115 (May 2020): 108909. http://dx.doi.org/10.1016/j.automatica.2020.108909.

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10

Sun, Xin-xiang, Jie Wu, Xi-Sheng Zhan, and Tao Han. "Optimal modified tracking performance for MIMO systems under bandwidth constraint." ISA Transactions 62 (May 2016): 145–53. http://dx.doi.org/10.1016/j.isatra.2016.01.018.

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11

Woodyatt, A. R., M. M. Seron, J. S. Freudenberg, and R. H. Middleton. "Cheap control tracking performance for non-right-invertible systems." International Journal of Robust and Nonlinear Control 12, no. 15 (October 16, 2002): 1253–73. http://dx.doi.org/10.1002/rnc.671.

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12

Al Asfar, Jamil, Ahmad Sakhrieh, Waleed Al-Nayfeh, and Ahmad Ghandoor. "Performance of solar modules integrated with reflector." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 3 (September 1, 2021): 1845. http://dx.doi.org/10.11591/ijpeds.v12.i3.pp1845-1852.

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<span lang="EN-US">This study investigates experimentally the performance of two-dimensional solar tracking systems with reflector using commercial silicon based photovoltaic module, with open and closed loop control systems. Different reflector materials were also investigated. The experiments were performed at the Hashemite University campus in Zarqa at a latitude of 32⁰, in February and March. Photovoltaic output power and performance were analyzed. It was found that the modified photovoltaic module with mirror reflector generated the highest value of power, while the temperature reached a maximum value of 53 ̊ C. The modified module suggested in this study produced 5% more PV power than the two-dimensional solar tracking systems without reflector and produced 12.5% more PV power than the fixed PV module with 26⁰ tilt angle.</span>

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13

Tosi, Daniele, Massimo Olivero, and Guido Perrone. "Performance analysis of peak tracking techniques for fiber Bragg grating interrogation systems." Journal of Microwaves, Optoelectronics and Electromagnetic Applications 11, no. 2 (December 2012): 252–62. http://dx.doi.org/10.1590/s2179-10742012000200003.

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14

Arasu, A. Valan, and T. Sornakumar. "DESIGN, DEVELOPMENT AND PERFORMANCE STUDIES OF EMBEDDED ELECTRONIC CONTROLLED ONE AXIS SOLAR TRACKING SYSTEM." Asian Journal of Control 9, no. 2 (October 22, 2008): 163–69. http://dx.doi.org/10.1111/j.1934-6093.2007.tb00319.x.

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15

Guan, Zhi-Hong, Baoxian Wang, and Li Ding. "Modified tracking performance limitations of unstable linear SIMO feedback control systems." Automatica 50, no. 1 (January 2014): 262–67. http://dx.doi.org/10.1016/j.automatica.2013.10.008.

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16

Grasselli, Osvaldo Maria, Sauro Longhi, and Antonio Tornambè. "Robust tracking and performance for multivariable systems under physical parameter uncertainties." Automatica 29, no. 1 (January 1993): 169–79. http://dx.doi.org/10.1016/0005-1098(93)90180-2.

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17

Shin, Jae-Min, Yu-Sin Kim, Tae-Won Ban, Suna Choi, Kyu-Min Kang, and Jong-Yeol Ryu. "Position Tracking Techniques Using Multiple Receivers for Anti-Drone Systems." Sensors 21, no. 1 (December 23, 2020): 35. http://dx.doi.org/10.3390/s21010035.

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The need for drone traffic control management has emerged as the demand for drones increased. Particularly, in order to control unauthorized drones, the systems to detect and track drones have to be developed. In this paper, we propose the drone position tracking system using multiple Bluetooth low energy (BLE) receivers. The proposed system first estimates the target’s location, which consists of the distance and angle, while using the received signal strength indication (RSSI) signals at four BLE receivers and gradually tracks the target based on the estimated distance and angle. We propose two tracking algorithms, depending on the estimation method and also apply the memory process, improving the tracking performance by using stored previous movement information. We evaluate the proposed system’s performance in terms of the average number of movements that are required to track and the tracking success rate.

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18

Zhan, Xi-Sheng, Xin-Xiang Sun, Jie Wu, and Tao Han. "Optimal modified tracking performance for networked control systems with QoS constraint." ISA Transactions 65 (November 2016): 109–15. http://dx.doi.org/10.1016/j.isatra.2016.07.006.

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19

Tran, Tuan Anh, and Quan Minh Duong. "DESIGN AND PERFORMANCE ASSESSMENT OF HYBRID-MAXIMUM POWER POINT TRACKING ALGORITHM." Journal of Science and Technology: Issue on Information and Communications Technology 17, no. 12.2 (December 9, 2019): 28. http://dx.doi.org/10.31130/ict-ud.2019.96.

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There is unprecedented interest in renewable energy, this work is accomplished in order to meet rising electricity demand as well as reduce the dependence on fossil fuels. In the distinctive means of renewable energy, recent years have seen rapid growth on installed power and output power as well. With the development of power electronic techniques and manufacturing materials, the installation cost of photovoltaic (PV) is reducing gradually, promising intense competition with the conventional energy in foreseeable future. However, this mean of energy is affected by coincident variation of irradiance parameters and environment temperature, etc. Hence, power electronic converters must integrate the algorithms of Maximum Power Point Tracking (MPPT) so that improve the output power of Photovoltaic systems. The previous MPPT algorithms have existed some drawbacks in operation such as oscillation and the slow process, etc. This article build a MPPT based on simulation and experimental methods and is compared to the conventional MPPT algorithms. The verifiable results show the hybrid MPPT algorithm has better performance, enhance the quantity of obtained power and increase the stability of the system. X

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20

Chen, Jie, Shinji Hara, Li Qiu, and Richard H. Middleton. "Best Achievable Tracking Performance in Sampled-Data Systems via LTI Controllers." IEEE Transactions on Automatic Control 53, no. 11 (December 2008): 2467–79. http://dx.doi.org/10.1109/tac.2008.2006924.

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21

Achkari, O., and A. El Fadar. "Thermal performance comparison of different sun tracking configurations." European Physical Journal Applied Physics 88, no. 2 (November 2019): 20902. http://dx.doi.org/10.1051/epjap/2019190048.

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Parabolic trough collector (PTC) is one of the most widespread solar concentration technologies and represents the biggest share of the CSP market; it is currently used in various applications, such as electricity generation, heat production for industrial processes, water desalination in arid regions and industrial cooling. The current paper provides a synopsis of the commonly used sun trackers and investigates the impact of various sun tracking modes on thermal performance of a parabolic trough collector. Two sun-tracking configurations, full automatic and semi-automatic, and a stationary one have numerically been investigated. The simulation results have shown that, under the system conditions (design, operating and weather), the PTC's performance depends strongly on the kind of sun tracking technique and on how this technique is exploited. Furthermore, the current study has proven that there are some optimal semi-automatic configurations that are more efficient than one-axis sun tracking systems. The comparison of the mathematical model used in this paper with the thermal profile of some experimental data available in the literature has shown a good agreement with a remarkably low relative error (2.93%).

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22

Mamun, A. A., L. F. Wang, K. C. Tan, H. M. Heng, and P. C. Ho. "An Automated Methodology for the Tracking of Electrical Performance for Memory Test Systems." IEEE Transactions on Instrumentation and Measurement 55, no. 3 (June 2006): 881–91. http://dx.doi.org/10.1109/tim.2006.873816.

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23

Weizhou Su, Li Qiu, and Jie Chen. "Fundamental performance limitations in tracking sinusoidal signals." IEEE Transactions on Automatic Control 48, no. 8 (August 2003): 1371–80. http://dx.doi.org/10.1109/tac.2003.815019.

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24

Su, W., L. Qiu, and J. Chen. "On Performance Limitation in Tracking a Sinusoid." IEEE Transactions on Automatic Control 51, no. 8 (August 2006): 1320–25. http://dx.doi.org/10.1109/tac.2006.878726.

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25

Flores-Hernández, Diego A., Alberto Luviano-Juárez, Norma Lozada-Castillo, Octavio Gutiérrez-Frías, César Domínguez, and Ignacio Antón. "Optimal Strategy for the Improvement of the Overall Performance of Dual-Axis Solar Tracking Systems." Energies 14, no. 22 (November 22, 2021): 7795. http://dx.doi.org/10.3390/en14227795.

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Solar Tracking Systems are useful to increase the generation efficiency of photovoltaic technology, mainly for concentration technology, where dual-axis is required on account of the high accurate alignment to the Sun. Even when there exists a strong relation between tracking error and energy efficiency, multiple technological and research developments have sought to solve these problems independently. The present research proposes a novel concurrent design methodology for optimizing the overall performance of two-axis trackers, allowing to keep a balance between the tracking error and the energy consumption from the design stage, from an optimization approach. The concurrent approach was implemented to design a Solar Tracker as a solar monitoring system, was compared with four commercial systems, obtaining a similar pointing accuracy with a mixed tracking error of 0.0942°. The system has the best energy balance, consuming only 0.9641% of the energy generated for the tracking action, below commercial models. Finally, a CO2 impact analysis was carried out, where the proposed tracker obtained the lowest value, with 25.7018 g. The results support the developed concurrent strategy for the optimization of the overall performance of dual-axis systems, allowing us to find a harmonic balance between the energy consumption and the required tracking accuracy.

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26

Kota, John S., and Antonia Papandreou-Suppappola. "Joint Design of Transmit Waveforms for Object Tracking in Coexisting Multimodal Sensing Systems." Sensors 19, no. 8 (April 12, 2019): 1753. http://dx.doi.org/10.3390/s19081753.

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We examine a multiple object tracking problem by jointly optimizing the transmit waveforms used in a multimodal system. Coexisting sensors in this system were assumed to share the same spectrum. Depending on the application, a system can include radars tracking multiple targets or multiuser wireless communications and a radar tracking both multiple messages and a target. The proposed spectral coexistence approach was based on designing all transmit waveforms to have the same time-varying phase function while optimizing desirable performance metrics. Considering the scenario of tracking a target with a pulse–Doppler radar and multiple user messages, two signaling schemes were proposed after selecting the waveform parameters to first minimize multiple access interference. The first scheme is based on system interference minimization, whereas the second scheme explores the multiobjective optimization tradeoff between system interference and object parameter estimation error. Simulations are provided to demonstrate the performance tradeoffs due to different system requirements.

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27

Guan, Zhi-Hong, Xi-Sheng Zhan, and Gang Feng. "Optimal tracking performance of MIMO discrete-time systems with communication constraints." International Journal of Robust and Nonlinear Control 22, no. 13 (May 25, 2011): 1429–39. http://dx.doi.org/10.1002/rnc.1755.

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28

Peng, Chang, Qianqian Cai, Mengyue Chen, and Xiaoning Jiang. "Recent Advances in Tracking Devices for Biomedical Ultrasound Imaging Applications." Micromachines 13, no. 11 (October 29, 2022): 1855. http://dx.doi.org/10.3390/mi13111855.

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With the rapid advancement of tracking technologies, the applications of tracking systems in ultrasound imaging have expanded across a wide range of fields. In this review article, we discuss the basic tracking principles, system components, performance analyses, as well as the main sources of error for popular tracking technologies that are utilized in ultrasound imaging. In light of the growing demand for object tracking, this article explores both the potential and challenges associated with different tracking technologies applied to various ultrasound imaging applications, including freehand 3D ultrasound imaging, ultrasound image fusion, ultrasound-guided intervention and treatment. Recent development in tracking technology has led to increased accuracy and intuitiveness of ultrasound imaging and navigation with less reliance on operator skills, thereby benefiting the medical diagnosis and treatment. Although commercially available tracking systems are capable of achieving sub-millimeter resolution for positional tracking and sub-degree resolution for orientational tracking, such systems are subject to a number of disadvantages, including high costs and time-consuming calibration procedures. While some emerging tracking technologies are still in the research stage, their potentials have been demonstrated in terms of the compactness, light weight, and easy integration with existing standard or portable ultrasound machines.

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29

Hu, Yabo, Yunhai Geng, Baolin Wu, and Danwei Wang. "Model-Free Prescribed Performance Control for Spacecraft Attitude Tracking." IEEE Transactions on Control Systems Technology 29, no. 1 (January 2021): 165–79. http://dx.doi.org/10.1109/tcst.2020.2968868.

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30

Yang, Haidou, and Wei Li. "PERFORMANCE MEASUREMENT OF PHOTOELECTRIC DETECTION AND TARGET TRACKING ALGORITHM." International Journal on Smart Sensing and Intelligent Systems 8, no. 3 (2015): 1554–75. http://dx.doi.org/10.21307/ijssis-2017-819.

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31

Song, Shengli, Rui Jiang, Xieda Song, Yuxuan Cao, and Zhidan Sun. "Driving Performance Assessment Based on Accurate Position Tracking." Wireless Communications and Mobile Computing 2019 (August 8, 2019): 1–8. http://dx.doi.org/10.1155/2019/5256180.

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A driving performance assessment (DPA) system has been proposed in this paper to evaluate drivers’ skills in training. The system is based on centimeter-level localization of the vehicles, thanks to differential BeiDou Navigation Satellite System (BDS). Given a vehicle’s dimensions, its envelopment has been discretized both temporally and spatially as binary images, while the training area is modeled as a grayscale image where the intensity denotes the penalty of the certain area in unit time. The performance index can be obtained from the summation of images along with time. Experiments have been conducted to demonstrate the accuracy of vehicle tracking and the effectiveness of the proposed assessment system.

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32

Wang, Xuerao, Qingling Wang, and Changyin Sun. "Adaptive tracking control of high-order MIMO nonlinear systems with prescribed performance." Frontiers of Information Technology & Electronic Engineering 22, no. 7 (July 2021): 986–1001. http://dx.doi.org/10.1631/fitee.2000145.

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33

De Jager, B. "Improving the tracking performance of mechanical systems by adaptive extended friction compensation." Control Engineering Practice 1, no. 6 (December 1993): 1009–18. http://dx.doi.org/10.1016/0967-0661(93)90011-f.

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34

Youngjin Choi, Wan Kyun Chung, and Il Hong Suh. "Performance and H/sub ∞/ optimality of PID trajectory tracking controller for Lagrangian systems." IEEE Transactions on Robotics and Automation 17, no. 6 (2001): 857–69. http://dx.doi.org/10.1109/70.976011.

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35

Zhou, Lan, Jinhua She, Xian-Ming Zhang, Zhenwei Cao, and Zhu Zhang. "Performance Enhancement of RCS and Application to Tracking Control of Chuck-Workpiece Systems." IEEE Transactions on Industrial Electronics 67, no. 5 (May 2020): 4056–65. http://dx.doi.org/10.1109/tie.2019.2921272.

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36

Kim, Chuljoong, and Hanseok Ko. "Weighted Kernel Filter Based Anti-Air Object Tracking for Thermal Infrared Systems." Sensors 20, no. 15 (July 22, 2020): 4081. http://dx.doi.org/10.3390/s20154081.

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Анотація:

Visual object tracking is an important component of surveillance systems and many high-performance methods have been developed. However, these tracking methods tend to be optimized for the Red/Green/Blue (RGB) domain and are thus not suitable for use with the infrared (IR) domain. To overcome this disadvantage, many researchers have constructed datasets for IR analysis, including those developed for The Thermal Infrared Visual Object Tracking (VOT-TIR) challenges. As a consequence, many state-of-the-art trackers for the IR domain have been proposed, but there remains a need for reliable IR-based trackers for anti-air surveillance systems, including the construction of a new IR dataset for this purpose. In this paper, we collect various anti-air thermal-wave IR (TIR) images from an electro-optical surveillance system to create a new dataset. We also present a framework based on an end-to-end convolutional neural network that learns object tracking in the IR domain for anti-air targets such as unmanned aerial vehicles (UAVs) and drones. More specifically, we adopt a Siamese network for feature extraction and three region proposal networks for the classification and regression branches. In the inference phase, the proposed network is formulated as a detection-by-tracking method, and kernel filters for the template branch that are continuously updated for every frame are introduced. The proposed network is able to learn robust structural information for the targets during offline training, and the kernel filters can robustly track the targets, demonstrating enhanced performance. Experimental results from the new IR dataset reveal that the proposed method achieves outstanding performance, with a real-time processing speed of 40 frames per second.

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37

Catarinucci, Luca, and Luigi Patrono. "Performance Evaluation of a Novel Animals Tracking System based on UHF RFID Technology." Journal of Communications Software and Systems 9, no. 1 (March 21, 2013): 4. http://dx.doi.org/10.24138/jcomss.v9i1.153.

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The adoption of solutions based on Radio Frequency IDentification technology in a wide range of contexts is a matter of fact. In many situations, such as the tracking of small-size living animals, the straightforward use of commercial systems does not ensure adequate performance. Consequently, both the RFID hardware and the software control platform should be tailored for the particular application. In this work, the specific requirements of Near Field Ultra High Frequency RFID reader antennas suitable for small-size animal localization and tracking are identified and a control system in a LabVIEW environment is designed. Afterwards, both hardware and software solutions have been implemented and validated. In particular, an algorithm based on the measured Received Signal Strength Indication, in order to obtain precise localization data, was developed and validated. Finally, the set-up of a first working prototype involving built-in-lab reader antennas has been completed and tested. The achieved results prove the effectiveness of the proposed tracking system.

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38

Behera, L., and K. K. Anand. "Guaranteed tracking and regulatory performance of nonlinear dynamic systems using fuzzy neural networks." IEE Proceedings - Control Theory and Applications 146, no. 5 (September 1, 1999): 484–91. http://dx.doi.org/10.1049/ip-cta:19990499.

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39

Hara, Shinji, Toni Bakhtiar та Masaaki Kanno. "The Best Achievableℋ2Tracking Performances for SIMO Feedback Control Systems". Journal of Control Science and Engineering 2007 (2007): 1–12. http://dx.doi.org/10.1155/2007/93904.

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This paper is concerned with the inherentℋ2tracking performance limitation of single-input and multiple-output (SIMO) linear time-invariant (LTI) feedback control systems. The performance is measured by the tracking error between a step reference input and the plant output with additional penalty on control input. We employ the plant augmentation strategy, which enables us to derive analytical closed-form expressions of the best achievable performance not only for discrete-time system, but also for continuous-time system by exploiting the delta domain version of the expressions.

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40

Canbaz, Seçkin, and Gökhan Erdemir. "Performance analysis of real-time and general-purpose operating systems for path planning of the multi-robot systems." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 1 (February 1, 2022): 285. http://dx.doi.org/10.11591/ijece.v12i1.pp285-292.

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Анотація:

In general, modern operating systems can be divided into two essential parts, real-time operating systems (RTOS) and general-purpose operating systems (GPOS). The main difference between GPOS and RTOS is the system istime-critical or not. It means that; in GPOS, a high-priority thread cannot preempt a kernel call. But, in RTOS, a low-priority task is preempted by a high-priority task if necessary, even if it’s executing a kernel call. Most Linux distributions can be used as both GPOS and RTOS with kernel modifications. In this study, two Linux distributions, Ubuntu and Pardus, were analyzed and their performances were compared both as GPOS and RTOS for path planning of the multi-robot systems. Robot groups with different numbers of members were used to perform the path tracking tasks using both Ubuntu and Pardus as GPOS and RTOS. In this way, both the performance of two different Linux distributions in robotic applications were observed and compared in two forms, GPOS, and RTOS.

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41

Yin, Luyue, Wenxiang Deng, Xiaowei Yang, and Jianyong Yao. "Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation." Machines 9, no. 10 (September 26, 2021): 214. http://dx.doi.org/10.3390/machines9100214.

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Measurement noise, parametric uncertainties, and external disturbances broadly exist in electro-hydraulic servo systems, which terribly deteriorate the system control performance. To figure out this problem, a novel finite-time output feedback controller with parameter adaptation is proposed for electro-hydraulic servo systems in this paper. First, to avoid using noise-polluted signals and attain active disturbance compensation, a finite-time state observer is adopted to estimate unknown system states and disturbances, which attenuates the impact of measurement noise and external disturbances on tracking performance. Second, by adopting a parameter adaptive law, the parametric uncertainties in the electro-hydraulic servo system can be much lessened, which is beneficial to averting the high-gain feedback in practice. Then, integrating the backstepping framework and the super-twisting sliding mode technique, a synthesized output feedback controller is constructed to achieve high-accuracy tracking performance for electro-hydraulic servo systems. Lyapunov stability analysis demonstrates that the proposed control scheme can acquire finite-time stability. The excellent tracking performance of the designed control law is verified by comparative simulation results.

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42

Gong, Xuan, Zichun Le, Yukun Wu, and Hui Wang. "Real-Time Multiobject Tracking Based on Multiway Concurrency." Sensors 21, no. 3 (January 20, 2021): 685. http://dx.doi.org/10.3390/s21030685.

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This paper explored a pragmatic approach to research the real-time performance of a multiway concurrent multiobject tracking (MOT) system. At present, most research has focused on the tracking of single-image sequences, but in practical applications, multiway video streams need to be processed in parallel by MOT systems. There have been few studies on the real-time performance of multiway concurrent MOT systems. In this paper, we proposed a new MOT framework to solve multiway concurrency scenario based on a tracking-by-detection (TBD) model. The new framework mainly focuses on concurrency and real-time based on limited computing and storage resources, while considering the algorithm performance. For the former, three aspects were studied: (1) Expanded width and depth of tracking-by-detection model. In terms of width, the MOT system can support the process of multiway video sequence at the same time; in terms of depth, image collectors and bounding box collectors were introduced to support batch processing. (2) Considering the real-time performance and multiway concurrency ability, we proposed one kind of real-time MOT algorithm based on directly driven detection. (3) Optimization of system level—we also utilized the inference optimization features of NVIDIA TensorRT to accelerate the deep neural network (DNN) in the tracking algorithm. To trade off the performance of the algorithm, a negative sample (false detection sample) filter was designed to ensure tracking accuracy. Meanwhile, the factors that affect the system real-time performance and concurrency were studied. The experiment results showed that our method has a good performance in processing multiple concurrent real-time video streams.

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43

Jiang, X. W., Z. H. Guan, G. Feng, Y. Wu, and F. S. Yuan. "Optimal tracking performance of networked control systems with channel input power constraint." IET Control Theory & Applications 6, no. 11 (2012): 1690. http://dx.doi.org/10.1049/iet-cta.2011.0329.

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44

Chen, Chao-Yang, Weihua Gui, Lianghong Wu, Zhaohua Liu, and Huaicheng Yan. "Tracking Performance Limitations of MIMO Networked Control Systems With Multiple Communication Constraints." IEEE Transactions on Cybernetics 50, no. 7 (July 2020): 2982–95. http://dx.doi.org/10.1109/tcyb.2019.2912973.

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45

Kao, Minghui, and John J. Moskwa. "Nonlinear Diesel Engine Control and Cylinder Pressure Observation." Journal of Dynamic Systems, Measurement, and Control 117, no. 2 (June 1, 1995): 183–92. http://dx.doi.org/10.1115/1.2835178.

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This paper presents novel approaches to nonlinear engine fuel controller and cylinder pressure observer designs based on mean torque production and cylinder-by-cylinder models. Sliding mode controllers and sliding mode observers have shown good robustness and high tracking performance. Accordingly, they are selected in this study to fulfill demanding engine electronic control and onboard diagnostics requirements.

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46

Dimanidis, Ioannis S., Charalampos P. Bechlioulis, and George A. Rovithakis. "Output Feedback Approximation-Free Prescribed Performance Tracking Control for Uncertain MIMO Nonlinear Systems." IEEE Transactions on Automatic Control 65, no. 12 (December 2020): 5058–69. http://dx.doi.org/10.1109/tac.2020.2970003.

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47

Giunta, Giorgio, Leonardo Lucci, Renzo Nesti, Giuseppe Pelosi, Stefano Selleri, and Francesco Serrano. "A Comparison between Standard and Crossfeed Monopulse Radars in Presence of Rough Sea Scattering and Ship Movements." International Journal of Antennas and Propagation 2010 (2010): 1–9. http://dx.doi.org/10.1155/2010/126757.

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Анотація:

Monopulse radars are widely used in tracking systems, due to their relative simplicity and theoretical precision, but the presence of multipath impairs the tracking capabilities of these radars, especially when multipath signals are strong, as in a naval environment. A special monopulse setup, the crossfeed, has been proposed in the past to provide an automatic cancellation from smooth sea multipath. In this contribution, the performances of such a system are analyzed in presence of rough sea scattering and compared with those of a standard monopulse setup. Particular attention is devoted to performance degradations due to possible phase errors in the passive network implementing the comparator and due to ship rolling and pitching. This latter requires a full 3D monopulse simulator for its correct evaluation.

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48

Hassani, Adnane, Mountassar Maamoun, Rezki Tadrist, and Ali Nesba. "A new High Speed and Accurate FPGA-based Maximum Power Point Tracking Method for Photovoltaic Systems." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (September 1, 2017): 1335. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1335-1344.

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We introduce in this paper a new FPGA-based Maximum Power Tracker for photovoltaic systems. The developed approach targets to modify the perturb and observe in view of reaching rapid tracking and achieving excellent accuracy, while keeping the stability performance and the reduced complexity. To perform this improvement, an automatic and smart two steps switcher is integrated, in addition inputs FIR filters are incorporated<strong>. </strong>Therefore, a high sampling frequency is attained, and consequently the tracking speed is improved. MATLAB simulations and the Xilinx FPGA implementation results show that the improved approach reaches a performance very close to the recently published MPPT methods, with lesser complexity.

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49

Liu, Meiqin, Tianyi Huai, Ronghao Zheng, and Senlin Zhang. "Multisensor Multi-Target Tracking Based on GM-PHD Using Out-Of-Sequence Measurements." Sensors 19, no. 19 (October 5, 2019): 4315. http://dx.doi.org/10.3390/s19194315.

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In this paper, we study the issue of out-of-sequence measurement (OOSM) in a multi-target scenario to improve tracking performance. The OOSM is very common in tracking systems, and it would result in performance degradation if we used it inappropriately. Thus, OOSM should be fully utilized as far as possible. To improve the performance of the tracking system and use OOSM sufficiently, firstly, the problem of OOSM is formulated. Then the classical B1 algorithm for OOSM problem of single target tracking is given. Next, the random finite set (RFS)-based Gaussian mixture probability hypothesis density (GM-PHD) is introduced. Consequently, we derived the equation for re-updating of posterior intensity with OOSM. Implementation of GM-PHD using OOSM is also given. Finally, several simulations are given, and results show that tracking performance of GM-PHD using OOSM is better than GM-PHD using in-sequence measurement (ISM), which can strongly demonstrate the effectiveness of our proposed algorithm.

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50

Li, Yongzhi, Cheng Tao, Yapeng Li, Liu Liu, and Tao Zhou. "Investigation of Sphere Decoder and Channel Tracking Algorithms for Media-Based Modulation over Time-Selective Channels." Wireless Communications and Mobile Computing 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/2509824.

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The performance of media-based modulation (MBM) systems, where additional information can be conveyed by the indices of the channel states created by RF mirrors, over time-selective channels is investigated. By transforming the MBM system model into a traditional MIMO system model, we first propose a reduced complexity sphere decoder algorithm. Then two channel tracking algorithms, which are based on least mean square adaptive filter and recursive least-squares adaptive filter, are employed in order to combat the performance loss caused by the time-varying channels. Numerical results show that the proposed sphere decoder and these two channel tracking algorithms perform well in MBM systems.

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