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63rd IEEE Conference on Decision and control, CDC 2024

作者： Stoican, Florin Mihai, Stefan S. Monnigmann, Martin Ciubotaru, Bogdan D. University 'Politehnica' of Bucharest Department of Automatic Control and Systems Engineering 313 Splaiul Independenţei Sector 6 Bucharest060042 Romania Ruhr University Bochum Martin Mönnigmann Is with Automatic Control and System Theory Bochum44801 Germany

ISBN: (纸本)9798350316339

Solving the explicit model predictive control (MPC) problem entails enumerating a list of critical regions and their ancillary feedback laws. Unfortunately, their number and the time required to compute them increase exponentially with the problem size (state-space model dimension and length of the prediction horizon). We show that when, as it is often the case, the problem's constraints take the form of boxes or zonotopes, the resulting feasible domain can be compactly described as a constrained zonotope. Subsequently, we investigate whether, and under which circumstances, the combinatorial structure of the constrained zonotope interpretation accelerates the computation of the explicit solution. © 2024 IEEE.

关键词： State space methods

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An Improved Machine Learning Model for Pure Component Property Estimation

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engineering 2024年第8期39卷 61-73页

作者： Xinyu Cao Ming Gong Anjan Tula Xi Chen Rafiqul Gani Venkat Venkatasubramanian State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang UniversityHangzhou 310027China Department of Physics Bard College at Simon’s RockGreat BarringtonMA 01230USA PSE for SPEED Company Charlottenlund DK-2920Denmark Sustainable Energy and Environment Thrust The Hong Kong University of Science and Technology(Guangzhou)Guangzhou 510000China Department of Applied Sustainability Széchenyi István UniversityGyör 9026Hungary Complex Resilient Intelligent Systems Laboratory Department of Chemical EngineeringColumbia UniversityNew YorkNJ 10027USA

Information on the physicochemical properties of chemical species is an important prerequisite when performing tasks such as process design and product ***,the lack of extensive data and high experimental costs hinder the development of prediction techniques for these ***,accuracy and predictive capabilities still limit the scope and applicability of most property estimation *** paper proposes a new Gaussian process-based modeling framework that aims to manage a discrete and high-dimensional input space related to molecular structure representation with the group-contribution approach.A warping function is used to map discrete input into a continuous domain in order to adjust the correlation between different *** selection techniques,including prior elicitation and prior predictive checking,are also applied during the building procedure to provide the model with more information from previous research *** framework is assessed using datasets of varying sizes for 20 pure component *** 18 out of the 20 pure component properties,the new models are found to give improved accuracy and predictive power in comparison with other published models,with and without machine learning.

关键词： Group contribution Gaussian process Warping function Prior predictive checking

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Life Cycle Management in Oil&Gas Products Industry 17

Life Cycle Management in Oil&Gas Products Industry

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17th International Conference on engineering of Modern Electric systems, EMES 2023

作者： Magdoiu, Liliana Doina Caciora, Simona Veronica Abrudan Pacala, Anca Gamcova, Maria University of Oradea Control Systems Engineering and Management Department Oradea Romania Technical University of Kosice Faculty of Electrical Engineering and Informatics Kosice Slovakia

ISBN: (纸本)9798350310634

The life cycle of a petroleum product reflects the evolution of its sales volume over time and represents the interval between its introduction on the market and its definitive disappearance from the commodity exchange arena. During the life cycle of a petroleum product, the company marketing it will keep on reformulating the adopted marketing strategies, as determined by variable conditions and new challenges on the side of the competition, along with the changes in customers' interests and their requirements in relation to the product;therefore, appropriate marketing strategies must be developed for each stage in the life cycle of the petroleum product in order to increase its marketing profitability, even though its existence is limited over time. © 2023 IEEE.

关键词： Life cycle

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Development and Analysis of Genetic Algorithm for Optimization of Continuous Cast Billets Warehousing Process

Development and Analysis of Genetic Algorithm for Optimizati...

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2024 International Russian Smart Industry Conference, SmartIndustryCon 2024

作者： Shchegolikhin, Ivan S. Andreev, Sergey M. Nosov Magnitogorsk State Technical University Department of Computer Engineering and Programming Magnitogorsk Russia Nosov Magnitogorsk State Technical University Department of Automated Control Systems Magnitogorsk Russia

ISBN: (纸本)9798350395044

Warehouses are an important logistic component of various companies. Warehouses may have different layouts, equipment and their own features. Optimization of warehouse operations can decrease overhead costs and increase the economic efficiency of industry. The technological process of steel sheet production at a metallurgical company includes two major stages: casting of liquid steel into billets and rolling of these billets on a rolling mill. In order to coordinate the productivity of these two stages and to be able to fulfill orders promptly, a warehouse of slabs (billets) is used. Billets of different parties and steel grades are stored in stacks. The billets are moved to the warehouse for storage and from the warehouse to the rolling mill by bridge cranes. In this paper the problem of optimization of the process of continuous cast billets storage is solved to minimize the number of slab handling operations. The problem is decomposed into two subproblems SLAP (Storage Location Assignment Problem) and CSP (Crane Scheduling Problem). A modified genetic algorithm was applied to solve the problem. Using a simulation model of the warehouse, the efficiency of the algorithm was evaluated using different approaches to take the restrictions imposed on the process of slab handling into account. It is shown that the most effective is the algorithm in which there is no restriction on the placement of stacks of billets belonging to one melting. © 2024 IEEE.

关键词： Genetic algorithms

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Hyperstability Criterion in Model Reference Adaptive control: Enhancing Induction Motor Efficiency for Autonomous Electric Vehicles 7th

Hyperstability Criterion in Model Reference Adaptive Control...

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7th International Conference on Artificial Intelligence in Renewable Energetic systems, IC-AIRES 2023

作者： Guendouz, A. Bouhenna, A. Department of Automation and Control Systems Yahia Fares Medea University Algiers Algeria Department of Electrical Engineering National Polytechnic School of Oran – Maurice Audi-MA Oran Algeria

ISBN: (纸本)9783031606281

The combination of Electric Autonomous Vehicles (EAVs) and renewable energy aligns with sustainability goals. However, to achieve these goals, it’s necessary to implement a robust control system for the key component that drives the vehicle, specifically, the electric motor. This paper explores the control of Induction Motor pursuing the Required Performance Standards for Autonomous Vehicles. The primary objective is to build a robust control system to achieve this, the first approach is the Indirect Rotor Field Oriented control (IFOC), the Latter is implemented along with a PI controller, Lastly Model Reference Adaptive control by Hyperstability Criterion is introduced. A detailed analysis is carried out using MATLAB Simulink, which shows the efficiency of adaptive control not only in speed tracking, but also in parameter variation and disturbance. The comparative analysis between PI and Hyperstability control method validates the theory asserting the robustness and insensitivity of adaptive control to parameter uncertainty and disturbances. Furthermore, it convincingly demonstrates that the latter outperforms traditional classic controllers. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Model reference adaptive control

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Performance Analysis and Flexible control of a Novel Ball Double-screw Hydraulic Robot Knee Joint

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Journal of Bionic engineering 2023年第5期20卷 2147-2163页

作者： Jie Shao Yongming Bian Meng Yang Guangjun Liu School of Mechanical Engineering Tongji UniversityShanghai201804China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou310027China Department of Control Science and Engineering Tongji UniversityShanghai201804China National Engineering Technology Research Center for Prefabrication Construction in Civil Engineering Tongji UniversityShanghai200092China

Focusing on the ball double-screw hydraulic knee joint as the research object,this paper analyzes the load driving performance of the hydraulic knee *** the posture data of the human body such as walking,squatting and landing buffer as initial learning objects,motion features are *** simplifying the trajectories of different motion actions into key feature control points and flexible trajectory fitting,the trajectory of joint actions is *** method can realize the adaptability of the hydraulic robot knee joint in different movements,and take the flexible action as the optimization goal under the condition of ensuring the movement performance,so as to reduce the damage to the knee joint caused by the foot impact in *** simulation model was built by Adams and Matlab to complete the performance analysis and motion optimization experiment of the knee *** simulation results show that the foot impact force of the experimental model decreases gradually through ***,the method is applied to the hydraulic joint experimental prototype to prove its load capacity and flexible motion control performance.

关键词： Bionic robot Ball double-screw hydraulic joint Robot knee joint Performance analysis Humanoid motion control Flexible control

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Achieving Fine-Grained and Flexible Access control on Blockchain-Based Data Sharing for the Internet of Things

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China Communications 2022年第6期19卷 22-34页

作者： Ruimiao Wang Xiaodong Wang Wenti Yang Shuai Yuan Zhitao Guan School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China Department of Finance Operationsand Information SystemsBrock UniversityCanada

The traditional centralized data sharing systems have potential risks such as single point of failures and excessive working load on the central *** a distributed and collaborative alternative,approaches based upon blockchain have been explored recently for Internet of Things(IoTs).However,the access from a legitimate user may be denied without the pre-defined policy and data update on the blockchain could be costly to the *** this paper,we first address these issues by incorporating the Accountable Subgroup Multi-Signature(ASM)algorithm into the Attribute-based Access control(ABAC)method with Policy Smart Contract,to provide a finegrained and flexible ***,we propose a policy-based Chameleon Hash algorithm that allows the data to be updated in a reliable and convenient way by the authorized ***,we evaluate our work by comparing its performance with the *** results demonstrate significant improvement on the effectiveness and efficiency.

关键词： blockchain access control smart contract multi-signature chameleon-hash data sharing Internet of Things

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Hierarchical Event-Triggered systems: Safe Learning of Quasi-Optimal Deadline Policies 63

Hierarchical Event-Triggered Systems: Safe Learning of Quasi...

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63rd IEEE Conference on Decision and control, CDC 2024

作者： Ong, Pio Mazo, Manuel Ames, Aaron D. California Institute of Technology Department of Mechanical and Civil Engineering PasadenaCA91125 United States Delft University of Technology Delft Center for Systems and Control Faculty of Mechanical Engineering Netherlands

ISBN: (纸本)9798350316339

We present a hierarchical architecture to improve the efficiency of event-triggered control (ETC) in reducing resource consumption. This paper considers event-triggered systems generally as an impulsive control system in which the objective is to minimize the number of impulses. Our architecture recognizes that traditional ETC is a greedy strategy towards optimizing average inter-event times and introduces the idea of a deadline policy for the optimization of long-term discounted inter-event times. A lower layer is designed employing event-triggered control to guarantee the satisfaction of control objectives, while a higher layer implements a deadline policy designed with reinforcement learning to improve the discounted inter-event time. We apply this scheme to the control of an orbiting spacecraft, showing superior performance in terms of actuation frequency reduction with respect to a standard (one-layer) ETC while maintaining safety guarantees. © 2024 IEEE.

关键词： Orbits

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Incremental Stability of Discrete-Time First-Order Projection Elements ⁎

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IFAC-PapersOnLine 2024年第11期58卷 123-128页

作者： Riccardo Bertollo Sebastiaan van den Eijnden W.P.M.H. (Maurice) Heemels Control Systems Technology section Department of Mechanical Engineering Eindhoven University of Technology The Netherlands

In this paper, we present and analyze a class of discrete-time and sampled-data controllers named first-order projection elements (FOPEs). FOPEs form a class of hybrid controllers that have an underlying linear base dynamics, which are combined with a projection operator that ensures that the input-output (I/O) pair is contained in a well-designed sector. The I/O sector-constraint enables performance benefits in various application domains including motion control of high-precision machines. After the introduction of FOPEs, we focus on incremental stability analysis of these hybrid controllers. We show that the properties of the projection operator ensure incremental stability of the open-loop FOPE dynamics in case of an underlying linear dynamics that is exponentially stable. In this case, we compute tight bounds on the incremental gain. Under an appropriate small-gain condition, we show incremental input-to-state stability of the sampled-data interconnection of a FOPE with a continuous-time linear time-invariant plant. For the case of projected integrator dynamics, we provide a counterexample showing that incremental stability can be compromised. We provide additional, necessary and sufficient conditions under which FOPEs with integrator dynamics are incrementally asymptotically stable. Numerical simulations provide a practical example of the established incremental properties for the trajectories of a dynamical system coming from an industrial motion control application.

关键词： Hybrid integrator-gain systems Projected dynamics Incremental stability Sampled-data systems

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A Tailsitter UAV with a Passive Joint Able to Turn Acutely with a Flip Motion

A Tailsitter UAV with a Passive Joint Able to Turn Acutely w...

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IEEE International Conference on Automation Science and engineering (CASE)

作者： Takumi Ito Riku Funada Mitsuji Sampei Department of Systems and Control Engineering Tokyo Institute of Technology

ISBN: (数字)9798350358513

ISBN: (纸本)9798350358520

This paper proposes a novel hybrid UAV that can turn acutely with flip-turn motion. The UAV has a link consisting of four rotors, named quadlink, which is connected to the fuselage via a passive joint. When the UAV wants to turn in the reverse direction, only the quadlink rotates to generate thrust in the reverse direction for deceleration without changing the attitude of the wings. This eliminates the vertical motion during the deceleration of the conventional tailsitter UAVs and achieves acute turning. Then, once the UAV sufficiently slows down, it accelerates in the reverse direction while flipping the fuselage upside down to point the nose in the reverse direction. Finally, the UAV fully transitions to reverse cruise flight in the opposite direction. This paper only considers longitudinal motion as the first step in controlling the proposed UAV. The acute turn is accomplished without switching controllers. The paper finally presents a simulation result to evaluate the performance of the proposed UAV and controller.

关键词： Computer aided software engineering Simulation Rotors Nose Switches Autonomous aerial vehicles Turning control systems Mathematical models Trajectory

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