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23rd IASTED International Conference on Modelling, Identification and control

作者： Kubalcik, M Bobál, V Tomas Bata Univ Inst Informat Technol Dept Control Theory Zlin 76272 Czech Republic

ISBN: (纸本)0889863717

control of a coupled drives apparatus laboratory model as a two inputs - two outputs system is presented. One control algorithm based on polynomial theory and pole placement is proposed. A decoupling precompensator is used to suppress interactions between control loops. The algorithm in adaptive version is then used for control of the model. The results of the real-time experiments are also given.

关键词： multivariable control decoupling precompensator control algorithms polynomial methods adaptive control

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control Recycling Technology of Tannery Chromium Wastes

Control Recycling Technology of Tannery Chromium Wastes

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13th WSEAS International Conference on Computers

作者： Kolomaznik, Karel Vasek, Vladimir Janacova, Dagmar Tomas Bata Univ Fac Appl Informat Dept Automat Control Stranemi 4511 Zlin 76005 Czech Republic

ISBN: (纸本)9789604740994

The leader industry produces several kinds of wastes. That is why is necessary to look for the technologies and methods to process these waste to the products unloading the living environment. The solving of the recycling technology for the liquid and solid chromium wastes is only one problem from this area. The importance exactly of this problem results from the fact, that the chromium tannery wastes are potential dangerous for the environment. In this contribution there is described mathematical model of the recycling process, proposal of the laboratory technological equipment for the total chromium recycling of the liquid and solid waste. For this laboratory equipment was solved the computer control system with the full control algorithm closed recycling technology according to optimal electrical energy and alkali solution consumption. Experimental laboratory model were built in the Department of Automatic control Faculty of Applied Informatics Tomas Bata University in Zlin an apparatus fully equipped with sensors and actuators.

关键词： Tanned waste recycling Enzymatic hydrolysis Simulation Real-time Process control Microcomputer's technique control algorithms

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control algorithm for multi-plane photonic banyan-type switching fabric with and without first order crosstalk

Control algorithm for multi-plane photonic banyan-type switc...

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9th International Conference on Transparent Optical Networks (ICTON 2007)

作者： Danilewicz, Grzegorz Kabacinski, Wojciech Michalski, Marek Zal, Mariusz Poznan Univ Tech Chair Commun & Networks Ul Polanka 3 PL-60965 Poznan Poland

ISBN: (纸本)9781424412488

control algorithms for the multiplane baseline switching network are considered in this paper. The first algorithm do not take into account the crosstalk in switching element, while the second algorithm allows to omit the first order crosstalk. In both cases we have derived wide-sense non-blocking conditions. It is also shown that these algorithms require the smallest number of plane, i.e. there is no other algorithms which will lead to the lower number of needed planes. It should be noted, that the algorithm can determine a plane for a new connection in O(N-0.5) time or even in O(1) time depending on the implementation.

关键词： multiplane switching fabrics baseline switching fabrics control algorithms wide-sense non-blocking

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MOBILITY OPTIMIZATION AND control OF A 4X4 HE-VEHICLE IN CURVILINEAR. MOTION ON STOCHASTIC TERRAIN

MOBILITY OPTIMIZATION AND CONTROL OF A 4X4 HE-VEHICLE IN CUR...

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ASME International Design Engineering Technical Conference / Computer and Information in Engineering Conference (IDETC/CIE)

作者： Vantsevich, Vladimir V. Paldan, Jesse R. Farley, Blair K. Univ Alabama Birmingham Dept Mech Engn Birmingham AL 35294 USA Southern Co Serv Birmingham AL USA

ISBN: (纸本)9780791850138

This paper presents a new method for optimizing mobility of a 4x4 hybrid-electric vehicle through control of wheel power distribution. First, a mobility index is used to calculate optimal power distribution for improved mobility using a Lagrangian multiplier. A control algorithm is developed for altering the wheel power distribution in order to follow a trajectory path which is calculated for optimum mobility. An inverse vehicle dynamics math model of a 4x4 vehicle is used in which a task is assigned as a required velocity to test in two simulated curvilinear maneuvers.

关键词： Vehicle dynamics control algorithms Trajectories (Physics) Mathematics Vehicles Optimization Wheels Mechanical admittance

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EXTREMUM SEEKING control IMPLEMENTATION FOR DRILLING EFFICIENCY 43

EXTREMUM SEEKING CONTROL IMPLEMENTATION FOR DRILLING EFFICIE...

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ASME 43rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE)

作者： Ikhlef, Mohammed Amine Bekkevik, Sindre Sahebi, Hamed Gravdal, Jan Einar Sui, Dan Univ Stavanger Dept Energy & Petr Engn Stavanger Norway NORCE Norwegian Res Ctr Dept Technol Bergen Norway

ISBN: (纸本)9780791887868

In the continuously changing environment of drilling operations, the optimization of the Rate of Penetration (ROP) holds significant importance in improving efficiency and minimizing operational expenses. This study introduces a new methodology, referred to as Extremum Seeking control (ESC) with the aim of implementing sophisticated control and optimization methodologies for real time ROP or mechanical specific energy (MSE) in drilling. The ESC algorithm is a real-time adaptive control method that does not rely on a model and is capable of adjusting parameters in the presence of unknown system dynamics and mappings between control parameters and an objective function. Extremum searching can be employed as a methodology for addressing static optimization problems and optimizing parameters inside dynamic systems. In this work, this control algorithm is utilized to dynamically modify drilling parameters in real-time. By continuously seeking the optimal combination of factors such as weight on bit (WOB), it enables drilling engineers to maximize ROP while ensuring drilling safety and equipment integrity. This strategy signifies a fundamental change from traditional procedures by providing high accuracy and flexibility in the control of ROP. Moreover, this research examines the application oWith the growing complexity of drilling operations, the incorporation of ESC emerges as a potentially viable approach to address the industry's need for enhanced efficiency and cost-effectiveness.

关键词： Engineers control algorithms System dynamics algorithms Weight (Mass) Drilling Dynamic systems Optimization Adaptive control Safety

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DYNAMICS AND control OF CRANE PAYLOADS THAT BOUNCE AND PITCH DURING HOISTING

DYNAMICS AND CONTROL OF CRANE PAYLOADS THAT BOUNCE AND PITCH...

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ASME International Design Engineering Technical Conferences/Computers and Information in Engineering Conference

作者： Yoon, Jisup Singhose, William Vaughan, Joshua Ramirez, Gabriel Kim, Michael Tawde, Sujay Korea Atom Energy Res Inst Adv Fuel Cycle Syst Engn Div Taejon South Korea

ISBN: (纸本)9780791849019

The natural sway of crane payloads is detrimental to safe and efficient operation. Most crane control research has focused on oscillation induced by motion of the overhead trolley that is perpendicular to the vertical suspension cables. Little consideration has been given to bouncing oscillation in the hoist direction and pitching oscillation with respect to mass center of the payload. These dynamic effects arise in cases when the suspension cables are very long. These oscillations may interfere with the ability of the crane operators to accurately unload the payload at its desired position and orientation. This paper presents a method for generating shaped commands that suppress payload oscillations of bouncing and pitching. Theoretical models are initially used to develop and evaluate the input-shaping control algorithm. Then, experiments performed on a portable tower crane are used to demonstrate the improved response provided by the proposed approach.

关键词： control algorithms Cables Dynamics (Mechanics) Cranes Oscillations Hoists Tower cranes

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NONLINEAR ADAPTIVE control OF DYNAMIC SYSTEMS DRIVEN BY SHAPE MEMORY ALLOY (SMA) ACTUATORS

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ASME International Mechanical Engineering Congress and Exposition

作者： Chen, Shuo Craft, William J. Song, David Y. N Carolina Agr & Tech State Univ Dept Mech Engn Greensboro NC 27411 USA

ISBN: (纸本)9780791848722

This work describes the development and analysis of nonlinear adaptive based control algorithms for composite structures/systems operated with Shape Memory Alloy (SMA) actuators. A mathematical model charactering the motion of the composite systems is established, and by using Lyapunov stability theory, algorithms for linear displacement tracking control are derived. Actuation and control is achieved by adjusting the supply current to the SMA actuators. It is shown that with the proposed strategy for both linear displacement and velocity requires that the desired trajectory is tracked precisely. The novelty of the proposed approach also lies in the fact that it is fairly easy to set up and the computation involved as compared with other strategies. An example is used to verify the validity of the proposed approach. Simulation results using Matlab are presented.

关键词： control algorithms Matlab algorithms Simulation results Trajectories (Physics) Displacement Adaptive control Shape memory alloys Composite materials Tracking control Dynamic systems Computation Stability Actuators

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Simulink Generated control Algorithm for Nine-phase PMS Motor 7

Simulink Generated Control Algorithm for Nine-phase PMS Moto...

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7th IEEE International Conference on control System Computing and Engineering (ICCSCE)

作者： Kozovsky, Matus Blaha, Petr Brno Univ Technol CEITEC BUT Purkynova 123 Brno 61200 Czech Republic

ISBN: (纸本)9781538638972

This paper deals with the nine-phase motor control algorithm development, mainly with its implementation in target hardware using MATLAB Simulink. This environment allows control algorithm design using model based approach and the subsequent automatic conversion of control algorithms into C code using Simulink Embedded coder which is then used in the inverter software. Field oriented control algorithm has been designed and tuned for this motor. control algorithm has been tuned according to the measured motor parameters in simulations and then fine tuned on a real motor. The inverter control unit is based on AURIX Tricore microcontroller TC275. The code generation in Simulink has many settings. This paper analyses computational time depending on these settings. Potential problems with floating point math functions are outlined. Automatic code generation proves to be quick and easy tool for replacement of control algorithms or for fast control algorithm adaptation to different hardware.

关键词： control algorithms Simulink code generation multi-phase motor permanent magnet synchronous motor

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HYDRODYNAMIC RESPONSE OF TETHERED UNDERWATER ROBOT BY FEED-FORWARD AND INCREMENTAL PID control TECHNIQUES 39

HYDRODYNAMIC RESPONSE OF TETHERED UNDERWATER ROBOT BY FEED-F...

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ASME 39th International Conference on Ocean, Offshore and Arctic Engineering (OMAE)

作者： Wu, Jiaming Chen, Dongjun Lin, Jinhua Chen, Yan Dou, Yizhe South China Univ Tech Dept Naval Arch & Ocean Engn Guangzhou 510640 Peoples R China Yanhzhou Polytechn Inst Dept Arch Engn Yangzhou 225127 Jiangsu Peoples R China Guangzhou Shunhai Shipyards Ltd Guangzhou 511440 Peoples R China

ISBN: (纸本)9780791884317

The trajectory of tethered underwater robot is usually controlled by actuating the rotating speeds of control propellers attached to the robot and/or adjusting the length of umbilical cable. When the trajectory control problem of a tethered underwater robot is studied, it is necessary to couple the main body of underwater robot, umbilical cable and control propellers together forming an integrated hydrodynamic model so that the robot is in a comprehensive dynamic equilibrium condition, suitable control algorithms are then jointed into the hydrodynamic model constructing a hydrodynamic and control model for the tethered underwater robot system. Only in this way the hydrodynamic and control nature of a tethered underwater robot during different kinds of control manipulations can be numerically revealed objectively. In this paper, a hydrodynamic and control model to simulate the trajectory following control of a tethered underwater robot system is proposed, and the hydrodynamic performances of the robot and the umbilical cable are observed. To achieve this goal, three-dimensional hydrodynamic model of tethered underwater robot system is first introduced, feed-forward control technique for adjusting the length of umbilical cable and incremental PID algorithm for regulating the rotating speeds of propellers are then incorporated into the hydrodynamic model forming the hydrodynamic and control model. Based on the established hydrodynamic and control mode, relationships between the thrusts from the propellers and the rotating speeds of the propellers, and those among the trajectory following of the underwater robot and the control actions of adjusting the length of umbilical cable and governing the rotating speeds of the propellers are analyzed, and also the hydrodynamic performances of the tethered underwater robot system under the control manipulation are observed. In the research, the amplitude limit filtering method is applied in solving the governing equations of the

关键词： Robots Feedforward control Cables Propellers Trajectories (Physics) Computation Filtration algorithms Equilibrium (Physics) Thrust Tension control algorithms

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Noninteracting weight, moisture, and opacity control

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Journal of Dynamic Systems, Measurement and control, Transactions of the ASME 1975年第2期97卷 140-145页

作者： al-Shaikh, A.L. Shigemura, M.S. Control System Group Measurex Corporation Cupertino CA United States

For the control of a multi-input, multi-output process with time delays, algorithms for noninleractive control with lime delay compensation are developed. These are then applied to a 3 input, 3 output process, to obtain the 3 × 3 noninteracting algorithms. To lest and study the behavior of such a control system, simulation techniques are found to be very useful not only in designing and testing tlie control system but also in investigating and correcting for its limitations. Simulation results are presented and discussed. Although these algorithms are general and have been used in various industry applications, the major contribution of this paper is the application of the developed theory in the paper industry. For a fine paper machine, the major quality variables are basis weight, moisture and opacity. control of these variables is effected by adjustment of stock flow, steam pressure and TiO₂ flow. Mathematically this process includes lime delay and dynamics in addition to cross-coupling effects. The control algorithms developed here are implemented using a digital process control computer. Field results are presented and discussed in detail. © 1975 by ASME.

关键词： Weight (Mass) Delays Process control Simulation Dynamics (Mechanics) Paper products industry Computers Flow (Dynamics) control systems control algorithms Design Paper machines Simulation results Steam Pressure algorithms Testing

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