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作者： Engel, Daniel L. Putnam, Zachary R. Dutta, Soumyo Univ Illinois Dept Aerosp Engn 104 S Wright St Urbana IL 61801 USA NASA Atmospher Flight & Entry Syst Branch Langley Res Ctr 1 N Dryden StM-S 489 Hampton VA 23681 USA

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

Flap-based steering systems on blunt-body Mars entry vehicles may improve flight performance relative to existing bank-angle steering systems. Successful implementation of articulating aerodynamic flaps on a hypersonic entry vehicle requires an active control system to map angle of attack and sideslip angle commands to flap deflection commands. Here, a successivelinearization model predictive control algorithm, as well as a linear-quadratic regulator, are designed and assessed to address this multiple input multiple output control problem. These two control algorithms are assessed in the presence of uncertainty in Monte Carlo simulations for various flap configurations and command profiles. Results indicate that while both control algorithms provide successful command tracking in the presence of uncertainty, the model predictive controller provides tracking errors about half the value of those corresponding to the linear-quadratic regulator, indicating increased robustness. Comparison of several flap configurations shows the model predictive controller can be applied to various flap configurations successfully with only marginal performance differences between configurations.

关键词： control algorithm Neptune Proportional Integral Derivative Aerodynamic Force Coefficients Lift to Drag Ratio Aerodynamic Angle Sideslip Angle Monte Carlo Simulation Flight Performance Reaction control System

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Adaptive Dynamic State Prediction control algorithms for Quantitative Weighing System 8

Adaptive Dynamic State Prediction Control Algorithms for Qua...

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8th International Conference on Future Generation Communication and Networking FGCN

作者： Gao, Jun-feng Tang, Guang-yi Wang, Yao Harbin Univ Sci & Technol HRBUST Sch Software Harbin Peoples R China

ISBN: (纸本)9781479977802

In the most industrial processes, weighing machines are designed to automatically fill one or more types of the containers with a predetermined weight of particulates raw material using a controller. The performance of the machine is closely related to the accuracy of measurement and speed of dynamic response, which are contradictory. For a gravimetric filling machine, a novel adaptive dynamic state prediction control (ADSPC) algorithm running in the controller is proposed in this paper to regulate conflicts. This algorithm will consider the weighing process as a finite state. State migration is depended on the resulting weight and current state. The resulting weight is determined by the weight of measurement and current state. Compared with normal algorithm and simple prediction algorithm separately under the same condition, the result indicated that the algorithm is effective and feasible.

关键词： dynamic weighing control algorithm quantitative weighing weighing machine data processing

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Scaled experimental stand for testing control algorithms on brake systems with anti-lock capability

Scaled experimental stand for testing control algorithms on ...

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5th International Conference on Robotics and Automation Systems

作者： Ciupe, Valentin Vatau, Steliana Maniu, Inocentiu Politehn Univ Timisoara Fac Mech Engn Dept Mechatron Timisoara 300222 Romania

ISBN: (纸本)9783908451884

The paper presents a scaled experimental stand for applying different algorithms onto a braking system with anti-lock capability, in order to determine the best way to control the braking process. The stand consists of a test wheel with an electro-mechanic brake caliper rolling against a powered tambour track. The angular velocities of both rolling wheel and track are monitored by a PC using custom hardware and software. The functional parameters of the test stand can be modified, thus employing different approaches for the anti-lock function of the braking process.

关键词： Test stand anti-lock brake tire slip control algorithm

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Research on Consistency of control algorithms for High-order Inertial Object

Research on Consistency of Control Algorithms for High-order...

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2nd IEEE International Conference on Advanced Computer control

作者： Liu Ji-zhen Liu Xin-ping Yang Yong Guan Zhi-min N China Elect Power Univ Sch Control Sci & Engn Baoding 071003 Peoples R China

ISBN: (纸本)9781424458479

Several different control algorithms for high-order inertial system were researched recently in China. Since different algorithms have similar effects, the consistency of these algorithms was first proposed in this paper in the view of control principle. The superheated steam temperature system of a 600 MW unit was taken as an object. The characteristics of time domain and frequency domain, spectrum of local disturbance signals, robustness under model perturbation, and the real actuator output were analyzed and discussed. The conclusion is that the different algorithms applied in practice do have consistency;these algorithms have intrinsic deficiency, which is derived from the structure of the algorithms themselves. Finally it has carried on prospect for future research and some problems meriting our attention.

关键词： high-order inertial object consistency control algorithm superheated steam temperature

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Development of Flexible Mirror control algorithms

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ATMOSPHERIC AND OCEANIC OPTICS 2016年第1期29卷 84-88页

作者： Antoshkin, L. V. Lavrinov, V. V. Lavrinova, L. N. Russian Acad Sci Siberian Branch VE Zuev Inst Atmospher Opt Pl Akad Zueva 1 Tomsk 634055 Russia

To reduce the effect of the time delay on the operation of an adaptive system treated as a dynamic feedback system, the present-day approach to the correction of turbulent distortions of optical radiation supposes application of new control algorithms for the correcting mirror on the basis of forecasting phase distortions. Results of the numerical simulation are presented.

关键词： wavefront control algorithm flexible mirror

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Predictive algorithm for Tuyere Areas’ Parameters and control Over the Distribution of Blast Parameters Around a Blast Furnace 7th

Predictive Algorithm for Tuyere Areas’ Parameters and Contr...

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7th International Conference on Industrial Engineering, ICIE 2021

作者： Gurin, I.A. Spirin, N.A. Lavrov, V.V. Ural Federal University 19 Mira street Ekaterinburg620002 Russia

ISBN: (纸本)9783030852320

In the article, one has presented a mathematical description and an algorithm for prediction of tuyere areas’ parameters and control over the distribution of blast parameters around a blast furnace based on the application of patterns of heat transfer between the hot blast and cooling water for tuyere elements. The algorithm has been designed to align the thermal condition of the tuyere areas of a blast furnace along the circumference. It entails the calculation of the following parameters for each tuyere: output and composition of the hearth gas, heat removal from a tuyere, hot blast blowout velocity from a tuyere, kinetic energy of the hot blast, total mechanical energy of the blast flow, length of circulation and oxidation zones, and theoretical combustion temperature. One calculates the mean values of parameters, the area of oxidation zones, and the relative area of tuyere areas. It has been shown that, in case of the non-uniform distribution of the hot blast to tuyeres, to stabilize the thermal state of tuyere areas and to align the gas distribution along the furnace circumference, one is required to adjust the natural gas flow rate to each tuyere to maintain the theoretical combustion temperature at a target level. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Blast distribution Blast furnace control algorithm Numerical simulation Prediction Tuyere area

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Closing the Loop: Optimal Stimulation of Neuronal Networks via Adaptive control algorithms

Closing the Loop: Optimal Stimulation of Neuronal Networks v...

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作者： Santos, Julia Ann University of Washington

学位级别：master

The Caenorhabditis elegans (C. elegans) worm is a well-studied biological organism model. The nervous system of C. elegans is particularly appealing to study, since it is a tractable fully functional neuronal network for which electro-physical connectivity map (connectome) is fully resolved [1,2]. In this work, we use a recently established computational dynamical model of the C. elegans nervous system, which incorporated the static connectome data with intrinsic properties of neurons and their interactions. With this model, it has been demonstrated that robust oscillatory movements in motor neurons along the body can be invoked by constant current excitation of command sensory neurons (e.g., PLM neurons associated with forward crawling), and that their activation corresponds to low-dimensional Hopf bifurcation [3]. While these first results validated the model, it is exciting to learn and visualize how the nervous system transforms its oscillatory dynamics to the muscles to support robust full body movements (e.g., forward crawling) [4]. Moreover, it is intriguing to understand the optimal sensory stimulations that cause these movements to persist. We explore these questions by developing methods to visualize network activity in a physical space and creating a model for C. elegans musculature as a viscoelastic rod with discrete rigid segments [5]. We map the neuronal dynamics such that they activate the muscles and deform the rod. When motor neuron activity stimulates muscles [2], this activation is translated into force applied to the rod, which moves in accordance with the physical properties of C. elegans. By stimulating the command PLM neurons, we establish for the first time that motor neuron dynamics are indeed producing coherent oscillatory full body movements that resemble forward crawling. We utilize our computational full body model to determine the appropriate sensory input for behavior, such as crawling, to persist after explicit external stimulation (

关键词： c. elegans control algorithm dynamics network neural visualization Applied mathematics

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OPTIMISATION ANALYSIS OF ELECTRIC VEHICLE CHARGING AND DISCHARGING BASED ON BIDIRECTIONAL POWER CONVERTER BIPOLAR STRUCTURE

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MECHATRONIC SYSTEMS AND control 2025年第2期53卷 119-125页

作者： Li, Yuechao Zhang, Zhenhai Ju, Yao Xinxiang Vocat & Tech Coll Xinxiang 453006 Peoples R China

To tackle issues like high costs, independent design, and poor user experience in electric vehicle (EV) charging and discharging technology, this paper proposes an optimisation method based on bidirectional power converters. This method involves analysing mathematical models of converters in various modes, deriving their power circuit transfer functions, and laying the groundwork for circuit theory analysis, control algorithms, and parameter design. Results indicate that in the bidirectional AC/DC circuit, output voltage stabilises at 350 V within 0.1 s. In constant current mode, it maintains a 20 A output while gradually increasing the voltage. In constant voltage mode, battery capacity exceeds 95% in 0.32 s, followed by a gradual decrease in current and voltage stabilisation at 310 V. This study not only proves the circuit's feasibility but also highlights its potential for extensive use in EV charging and smart grid applications.

关键词： Electric vehicle bidirectional power converter single-phase full- bridge AC/DC three-port isolated DC/DC control algorithm

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Integrated Simulation of Virtual Prototypes and control algorithms of Unmanned Surface Vehicles Based on a Robot Operating System

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JOURNAL OF MARINE SCIENCE AND TECHNOLOGY-TAIWAN 2021年第4期29卷 453-475页

作者： Lee, Hye-Won Woo, Joo-Hyun Roh, Myung-Il Ham, Seung-Ho Zhao, Luman Ha, Sol Kim, Nak-Wan Yu, Chan-Woo Seoul Natl Univ Res Inst Marine Syst Engn 1 Gwanak Ro Seoul 08826 South Korea Korea Maritime & Ocean Univ Dept Naval Architecture & Ocean Syst Engn Busan South Korea Seoul Natl Univ Dept Naval Architecture & Ocean Engn 1 Gwanak Ro Seoul 08826 South Korea Changwon Natl Univ Sch Ind & Naval Architecture Seoul South Korea Norwegian Univ Sci & Technol Dept Ocean Operat & Civil Engn Trondheim Norway Mokpo Natl Univ Dept Naval Architecture & Ocean Engn Mokpo South Korea Agcy Def Dev Daejeon South Korea

Unmanned surface vehicles (USVs) require autonomous software with a high level of liberalization and automation to complete various missions. Therefore, experimental verification and validation of this software at the initial design stage are essential. However, such experiments are impossible before the actual hardware is developed, and the creation of an external environment for the mission requires substantial cost and time. In this study, virtual prototypes of the mission environment and hardware for the USV are developed. Then, a simulation environment for testing the control algorithms in the autonomous software is constructed. Data communication with the USV hardware is necessary for the autonomous software to acquire information from the sensors and to operate the actuators. Similarly, data communication between the programs of the virtual prototypes and the autonomous software is required for the integrated simulation environment. In this study, the robot operating system (ROS) software platform is adopted to construct the interface for this data communication. Finally, the integrated simulation environment of the control algorithms and the virtual prototypes are constructed based on ROS to verify the autonomous software of the USV. The applicability of the suggested simulation environment is evaluated by application to three scenarios: mine detection, path following, and port entry.

关键词： Unmanned surface vehicle (USV) Autonomous software Virtual prototype Integrated simulation control algorithm

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FE simulation on blank holder control using friction reducing algorithm in deep drawing process

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JSME INTERNATIONAL JOURNAL SERIES A-SOLID MECHANICS AND MATERIAL ENGINEERING 2005年第4期48卷 341-345页

作者： Manabe, KI Yamauchi, Y Yagami, T Tokyo Metropolitan Univ Dept Mech Engn Hachioji Tokyo 1920397 Japan

Recent global efforts to resolve environmental issues are required in sheet metal forming. For this reason, some research projects have been focused on unlubricated processes as well as on the use of volatile lubricants. However, low formability due to poor lubrication conditions is still a matter of concern. In this study, in order to improve the friction conditions, a new algorithm for controlling blank holding force (BHF) and punch speed (SPD) was proposed. The concept is to separate the wrinkle eliminating process from drawing process. That is, the process proceeds with an extremely low BHF until a wrinkle sufficiently grows, and the wrinkle is eliminated by BHF loading without punch penetration. Its effectiveness was investigated by finite element (FE) simulation, in which two blank models (0.5 mm and 1.0 mm thickness) were used. As a result, the maximum forming forces decreased by 5.33% (0.5 mm) and 1.55% (1.0 mm) compared with those of the uncontrolled model at a constant minimum BHF. In addition, a thinner blank sheet is better for the algorithm on the basis of the result that cup height decreases and thickness distribution increases in the case of 0.5 mm thickness.

关键词： deep drawing friction reducing control algorithm BHF punch speed wrinkle and FE simulation

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