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Performance of fixed-parameter control algorithms on high-rise structures equipped with semi-active tuned mass dampers

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STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS 2016年第7期25卷 340-354页

作者： Demetriou, Demetris Nikitas, Nikolaos Tsavdaridis, Konstantinos Daniel Univ Leeds Sch Civil Engn Leeds W Yorkshire England

The present study investigates the performance of fixed parameter control algorithms on wind-excited high-rise structures equipped with semi-active tuned mass dampers of variable damping. It has been demonstrated that the algorithms that increase significantly the performance of the controlled structure do so at the expense of damper strokes. When the maximum damper strokes are capped to progressively lower limits, the efficacy of different algorithms, measured through a number of performance objectives, drastically alters totally changing the performance ranking of them and pointing out the need for an extensive study of the interplay between loading, control algorithm and allowable stroke within the design of semi-active tuned mass dampers devices. 2015 The Authors. The Structural Design of Tall and Special Buildings published by John Wiley & Sons Ltd.

关键词： vibration mitigation control algorithms wind engineering high-rise buildings

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Shaking table testing of a steel frame structure equipped with semi-active MR dampers: comparison of control algorithms

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SMART STRUCTURES AND SYSTEMS 2015年第4期15卷 963-995页

作者： Caterino, N. Spizzuoco, M. Occhiuzzi, A. Univ Napoli Parthenope Dept Engn Naples Italy Univ Naples Federico II Dept Struct Engn & Architecture Naples Italy CNR ITC I-20133 Milan Italy

The effectiveness of the various control algorithms for semi-active structural control systems proposed in the literature is highly questionable when dealing with earthquake actions, which never reach a steady state. From this perspective, the paper summarizes the results of an experimental activity aimed to compare the effectiveness of four different semi-active control algorithms on a structural mock up representative of a class of structural systems particularly prone to seismic actions. The controlled structure is a near full scale 2-story steel frame, equipped with two semi-active bracing systems including two magnetorheological dampers designed and manufactured in Europe. A set of earthquake records has been applied at the base of the structure, by utilizing a shaking table facility. Experimental results are compared in terms of displacements, absolute accelerations and energy dissipation capability. A further analysis on the percentage incidence of undesired and/or unpredictable operations corresponding to each algorithm gives an insight on some factors affecting the reliability and, in turn, the real effectiveness of semi-active structural control systems.

关键词： semi-active control shaking table test magnetorheological damper control algorithms smart device

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AN INTRODUCTION TO THE USE OF FUZZY-SETS IN THE IMPLEMENTATION OF control algorithms

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JOURNAL OF THE INSTITUTION OF ELECTRONIC AND RADIO ENGINEERS 1985年第10期55卷 357-367页

作者： SUTTON, R TOWILL, DR UWIST DEPT MECH ENGN & ENGN PRODCARDIFF CF1 3XEWALES

The purpose of this paper is to present to the reader who is unfamiliar with fuzzy set theory the basic concepts in a straightforward manner. Thus a tutorial approach is adopted in the explanation of these concepts. After describing fuzzy sets, it is shown how fuzzy logic can be used to develop a fuzzy control algorithm by means of the fuzzy conditional statement. In order to unify the ideas that are presented, a detailed description of the development of a fuzzy controller is discussed. Computer simulation results are shown of the fuzzy controller with heading error and yaw rate as input and rudder demand as output activating the non-linear yaw dynamics of a ship during course-changing manoeuvres. For the simulation ship study, the model was derived from full-scale sea trials on a Royal Navy frigate.

关键词： fuzzy set theory nonlinear yaw dynamics fuzzy sets control algorithms fuzzy controller course-changing manoeuvres Combinatorial mathematics heading error ships Royal Navy control system synthesis rudder demand fuzzy conditional statement frigate Marine system control fuzzy logic ship control system analysis and synthesis methods yaw rate

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Programmable Integrated Silicon Photonics Waveguide Meshes: Optimized Designs and control algorithms

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IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS 2020年第2期26卷 1页

作者： Lopez, Daniel Perez Univ Politecn Valencia Photon Res Labs Valencia 46022 Spain iPron Programmable Photon SL Valencia 46022 Spain

Programmable Integrated Photonics is a recent area of research that aims to integrate a very-large scale of reconfigurable photonic components to enable flexible and versatile photonic integrated circuits. In this paper, we review the state of the art of general-purpose waveguide mesh arrangements with a special focus on those that allow the synthesis of optical feedback loops. Moreover, we propose for the first time, a new design approach to generate waveguide mesh patterns with equally-oriented components. This innovation is of special relevance to improve performance and to mitigate one of the main scalability limitations, the integration density. The paper finalizes with an introduction to control algorithms for waveguide mesh arrangements based on derivative methods and non-derivative methods. These control methods provide a proof for the self-reconfiguration of large-scale waveguide mesh arrangements. In particular, we apply the computational optimization algorithms to program a hexagonal waveguide mesh to emulate a 1 x 8 beamforming network and an optical filter based on an unbalanced MZI design. All in all, the paper comprises recipes to achieve truly practical software-defined photonic integrated circuits.

关键词： Programmable photonics reconfigurable circuits signal processing integrated circuits control algorithms

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Petri net models of discrete logics used in control algorithms developed in ladder diagram language

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INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 2023年第7-8期124卷 2597-2612页

作者： Carlos Quezada, Jose Flores, Ernesto Banos, Esperanza Quezada, Victor Autonomous Univ Hidalgo State High Sch Tizayuca Km 2-5 Highway Tizayuca Pachuca Tizayuca 43800 Hidalgo Mexico

control algorithms for programmable logic controllers are still developed based on the experience of those responsible for control in the industry. The IEC-61131-3 standard considers five programming languages: Ladder Diagram, Structured Text, Function Block Diagram, Instruction List, and Sequential Function Diagram, which use different function blocks to develop control algorithms. Within the control algorithms for discrete event systems, there are two types of blocks: those with discrete inputs and outputs, and those with discrete and analog inputs and discrete output. Of the latter, the present research shows the analysis and formal model of the blocks including the problems of accumulation of tokens and the restoration of the coils. This proposal includes logical blocks of timers, counters, positive and negative transition detectors and bistable elements, which, together with the AND, OR, AND-OR, contact lock, auto-loop and Set-Reset logics, can be modeled and analyzed control algorithms with a greater degree of complexity. This guarantees the safety of workers as well as machines.

关键词： control algorithms Discrete event system Function block diagram language Ladder diagram language Petri nets Programmable logic controller Structured text language

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EXPERIMENTAL COMPARISON AND APPLICATION OF VARIOUS PARAMETER-ADAPTIVE control algorithms

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AUTOMATICA 1980年第2期16卷 117-133页

作者： KURZ, H ISERMANN, R SCHUMANN, R TH DARMSTADT INST REGELUNGSTECHFACHGEBIET REGELSYSTD-6100 DARMSTADTFED REP GER

Various recursive parameter estimation algorithms and controller design procedures can be combined to build up parameter-adaptive control algorithms. Two parameter estimation methods and six control algorithms have been selected, taking into account good convergence properties and small computational expense and regarding the conditions for closed-loop identification. The resulting 12 parameter-adaptive control algorithms are compared and tested with a process computer in on-line operation with analog simulated stable and unstable processes for stochastic disturbances and step changes of the reference signal. The results are very promising. In many cases a good control performance is achieved. As a priori knowledge only the sampling time, the process model order and time delay and in some cases a weighting factor for the process input signal are required. Some parameter-adaptive control algorithms with good properties are applied to digital adaptive control of an air heater. Conclusions are given for the selection of parameter-adaptive control algorithms, depending on the type of process and its disturbances. The adaptive control algorithms may be applied for adaptive control of constant and time variant, linear and weakly non-linear stable and unstable processes with process computers or micro computers or for self-tuning of control algorithms or tuning of conventional analog PID controllers, if external disturbances act on the loop.

关键词： adaptive control computer control control algorithms digital control identifiability parameter estimation Process control

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Inverse kinematic control algorithms with a reduced coriolis component for use in motion simulators

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JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND control-TRANSACTIONS OF THE ASME 1995年第4期117卷 570-577页

作者： Repperger, DW Armstrong Laboratory AL/CFBS BLDG 29 2245 Third Street Wright-Patterson AFB OH 45433-7008

A motion simulator is studied within the framework of a multilink robotic manipulator and a class of inverse kinematic algorithms are investigated. Human subjects, for this motion simulator, sit at the end effector and are subjected to all relative motions of the respective links. From the perspective of the subject, one undesired artifact of this simulation occurs when Coriolis accelerations are induced at the end effector as a consequence of a coordinate frame moving relative to another moving frame. This paper adapts the inverse kinematic solution to those which have a minimum Coriolis component and can be used to control the motion simulator. A simple feedback control law is derived which, it turns out, has an additional interpretation as the solution of a related linear quadratic optimization problem.

关键词： End effectors Optimization Simulation control algorithms Kinematics Manipulators Feedback algorithms

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A unified Hamiltonian approach for LQ and H_∞ preview control algorithms

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JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND control-TRANSACTIONS OF THE ASME 1999年第3期121卷 365-369页

作者： Mianzo, L Peng, H Visteon Asia Pacific Elect Dev Ctr Hiroshima Japan Dept Mech Engn & Appl Mech Ann Arbor MI 48109 USA

A framework for solving both the continuous and discrete-time Le and H-infinity preview control algorithms is presented in this paper. The tracking control of art automotive durability test rig is used as an applicati... 详细信息

关键词： Tracking control control algorithms Simulation results Durability

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Survey of Advances in control algorithms of Quadrotor Unmanned Aerial Vehicle 16

Survey of Advances in Control Algorithms of Quadrotor Unmann...

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IEEE 16th International Conference on Communication Technology (ICCT)

作者： Li, Lebao Sun, Lingling Jin, Jie Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China Hangzhou Dianzi Univ Key Lab RF Circuits & Syst Hangzhou 310018 Peoples R China Dublin City Univ Sch Elect Engn Dublin 9 Ireland

ISBN: (纸本)9781467370059

First, the basic structure and principle of quadrotor UAV and its practical applications are introduced. Then, some control algorithms are also presented, such as, PID, LQR/LQG, H-infinity, sliding mode, feedback linearization, back stepping, model predictive, robust, adaptive, nested saturation, fuzzy logic, neural network, reinforcement learning, iterative learning, memory and brain emotional learning-based intelligent controllers, and the merits and drawbacks of them are analyzed. At last, we predict the main research direction on the future researches of quadrotor UAV.

关键词： Quadrotor unmanned aerial vehicle (UAV) control algorithms Linear and nonlinear Learning

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The Significance of Fuzzy Logic Based control algorithms in Shaping Energy Management Strategies for Electric Vehicles: An In-Depth Analysis

The Significance of Fuzzy Logic Based Control Algorithms in ...

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International Conference on Intelligent and Fuzzy Systems (INFUS)

作者： Cakir, Emre Hanilci, Furkan Kuyu, Yigit Cagatay Karsan Automot R&D Dept Bursa Turkiye

ISBN: (纸本)9783031671913;9783031671920

The energy required to overcome the inertia moment of the electric motor, especially during rapidmovements of electric vehicles, brings about uneven current characteristics on lithium-ion batteries. This situation can have negative effects on the driving range, performance, and battery state of health value of the vehicle. Therefore, energy management strategies in electric vehicles play a critical role in overcoming these challenges and optimizing the system. Energy management strategies in electric vehicles are planned approaches developed to optimize battery usage. These strategies regulate the energy flow to improve vehicle performance and optimize range based on factors such as driver demands, road conditions, and energy consumption. To regulate these flows, energy management strategies operate under the dominance of specific control algorithms. Many articles in the literature focus on these control theories, with particular emphasis on fuzzy logic-based control methods due to their flexibility and diversity in structures. The aim of this study is to comprehensively understand fuzzy logic-based control algorithms and examine their role in energy management strategies in electric vehicles from a broad perspective. The framework created could serve as a comprehensive resource for engineers and researchers working in the field of electric vehicles for quick decision-making.

关键词： Fuzzy Logic control algorithms Energy Management Strategies Electric Vehicles

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