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dynamic matrix control FOR PROCESS SYSTEMS WITH TIME-VARYING PARAMETERS

CHEMICAL ENGINEERING COMMUNICATIONS 1986年第4-6期47卷 295-314页

作者： OGUNNAIKE, BA ADEWALE, KEP Chemical Engineering Department University of Lagos Lagos Nigeria

The industrially successful dynamic matrix control technique (Cutler and Ramaker, 1979; Cutler, 1983) was originally developed for time invariant systems. The expansion of its scope to single variable systems withtime-varyingtime delays and steady state gains is shown to be surprisingly simple. Realistic examples with substantial industrial flavor are used to illustrate the ease of application, and to demonstrate the usefulness of these results.

关键词： dynamic matrix control Time varying system parameters Discrete control systems Time delay control systems Industrial computer control Predictive optimizing control

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dynamic matrix control Algorithm Implementation on ARM Cortex-R5 MCU: Performance Analysis

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IFAC-PapersOnLine 2018年第6期51卷 330-335页

作者： Czerwiski, Kamil Lawryczuk, Maciej Institute of Control and Computation Engineering Warsaw University of Technology ul. Nowowiejska 15/19 Warsaw00-665 Poland

This paper describes implementation of the dynamic matrix control (DMC) algorithm using a microcontroller with the ARM Cortex R5 core. Two versions of the DMC algorithm are considered: the classical one and the simplified one. It is shown that the latter one needs much shorter calculation time, but give the same control quality. Moreover, the influence of tuning parameters of the DMC algorithm on the calculation time is studied experimentally. The obtained implementation of the DMC algorithm can be used in very fast embedded system, with short sampling periods. Results of real experiment are demonstrated for Hercules RM57L843 LaunchPad board from Texas Instruments. © 2018

关键词： Embedded systems ARM processors control theory controllers Microcontrollers Microprocessor chips Model predictive control Real time systems Calculation time dynamic matrix control dynamic matrix control algorithms Performance analysis Real time embedded systems Short sampling period Texas Instruments Tuning parameter

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dynamic matrix control of Load Frequency control for Doubly Fed Induction Generator Wind Energy Grid Connected 34

Dynamic Matrix Control of Load Frequency Control for Doubly ...

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34th International Power System Conference (PSC)

作者： Pakravan, Pedram Pakravan, Payam Menhaj, Mohammad Bagher Amirkabir Univ Technol Dept Elect Engn Power Syst Tehran Iran Univ Tehran Dept Elect & Comp Engn Tehran Iran Amirkabir Univ Technol Dept Elect Engn Tehran Iran

ISBN: (纸本)9781728152738

This paper presents dynamic matrix control (DMC)-based strategies for the wind turbine- system. In order to the uncontrollable nature of the wind energy, the output power of the wind energy conversion systems (WECS) is also uncontrollable. This uncontrollability makes the WECS unable to respond to the load frequency variation when a system disturbance occurs. The instability of such a power system leads to the system failure. In this article, a model DMC is used for supporting load frequency control (LFC) in a doubly fed induction generator (DFIG)-based WECS under the variation of wind speed. It is illustrated that DMC can accept more feedback signals than any other conventional controllers, such as a proportional integral-derivate (PID), which makes it superior. simulation results illustrate that DMC gives stable response and faster to LFC than PID. The effectiveness of the methods is verified by time domain simulations.

关键词： Doubly Fed Induction Generator controller dynamic matrix control Load Frequency wind turbine wind power control

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dynamic matrix control for the step motion of synchronous motor based on the L^∞ performance index 5

Dynamic matrix control for the step motion of synchronous mo...

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5th International Conference on Electrical Machines and Systems

作者： Ge, BM Wang, XH Su, PS Jiang, JP Sun, HX Tsing Hua Univ Beijing 100084 Peoples R China

ISBN: (纸本)7506251159

Based on the infinity norm performance index, dynamic matrix control (DMC) skillfully combines with the step motion, and a novel control technique of synchronous motor is proposed in this paper. It breaks the traditional control method of the drive, and uses the predictive model based on the dynamic information in the rotor position of the synchronous motor, rolling optimization strategy and the feedback control algorithm to solve the problems of modeling and control for synchronous motor. Simulations are-carried out using a 70h.p synchronous motor operating at the position and speed control modes, respectively. The results verify the validity of our present method.

关键词： dynamic matrix control infinity norm performance index step motion synchronous motor

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dynamic matrix control Algorithm Based on Interpolated Step Response Neural Models

Dynamic Matrix Control Algorithm Based on Interpolated Step ...

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10th International Conference on Artificial Intelligence and Soft Computing (ICAISC 2010)

作者： Lawrynczuk, Maciej Warsaw Univ Technol Inst Control & Computat Engn PL-00665 Warsaw Poland

ISBN: (纸本)9783642132315

This paper presents a nonlinear dynamic matrix control (DMC) algorithm. A neural network calculates on-line step response coefficients which comprise a model of the controlled process. These coefficients are next used to determine the optimal control policy from an easy to solve quadratic programming problem. To reduce the number of model parameters (step response models usually need many coefficients) interpolated step response neural models are used in which selected coefficients are actually calculated by the neural network whereas remaining ones are interpolated by means of cubic splines. The main advantage of the step response neural model is the fact that it can be obtained in a straightforward way, no recurrent training is necessary. Advantages of the described DMC algorithm are: no on-line model linearisation, low computational complexity and good control accuracy.

关键词： Process control dynamic matrix control neural networks interpolation optimisation quadratic programming

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dynamic matrix control of a 3DOF Helicopter with Stabilising Inner Loop 15th

Dynamic Matrix Control of a 3DOF Helicopter with Stabilising...

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15th APCA International Conference on Automatic control and Soft Computing (controlO)

作者： Ramos Ferreira, Andreyna Sarila Caregnato-Neto, Angelo Harrop Galvao, Roberto Kawakami Magalhaes Afonso, Rubens Junqueira Inst Tecnol Aeronaut Div Engn Eletron BR-12228900 Sao Jose Dos Campos SP Brazil

ISBN: (纸本)9783031100475;9783031100468

This paper investigates the use of a dual-loop control system for a laboratory helicopter with three degrees of freedom, namely pitch, elevation and travel. The goal consists of following a travel reference at constant elevation while limiting pitch excursion. A first-principles model of the helicopter was initially employed to design the inner loop through a Discrete Linear Quadratic Regulator (DLQR) formulation. With this stabilising controller in place, the step response to a travel command was acquired to design a dynamic matrix control (DMC) scheme with pitch constraints. The dual-loop architecture was implemented in a multirate manner, with DMC acting as a command governor for the DLQR controller. Experimental results are presented to show the efficacy of the overall control system.

关键词： dynamic matrix control Data-based control design Discrete Linear Quadratic Regulator Multirate control 3DOF helicopter

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dynamic matrix control FOR COLD HELIUM TEMPERATURE OF MULTI-MODULAR HIGH TEMPERATURE GAS-COOLED REACTOR PLANT 31

DYNAMIC MATRIX CONTROL FOR COLD HELIUM TEMPERATURE OF MULTI-...

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31st International Conference on Nuclear Engineering (ICONE) - 24/7 Clean Nuclear Energy - Solution for Global Warming

作者： Wu Zhendong Dong Zhe Tsinghua Univ Collaborat Innovat Ctr Adv Nucl Energy Technol Ch Inst Nucl & New Energy Technol Key Lab Adv Reactor Engn & SafetyMinist Educ Beijing 100084 Peoples R China

ISBN: (纸本)9780791888230

The coordination control strategy for operational multi-modular high temperature gas-cooled reactors primarily considers process variables such as neutron flux, main steam temperature, and hot helium temperature, yet it does not address the control of cold helium temperature. Inappropriate cold helium temperatures can lead to structural material fatigue, impact the lifespan of instrumentation at the core's top, and consequently degrade the operational reliability of nuclear power plants. Additionally, cold helium temperature reflects the thermal balance between the primary and secondary loops, underscoring the necessity of controlling cold helium temperature. In response, a method using dynamic matrix control (DMC) is proposed to control cold helium temperature by adjusting the hot helium temperature setpoint. A step response model with cold helium temperature data is used to design DMC. Utilizing the stability of the existing proportional-integral-derivative (PID) controller and the optimization capabilities of DMC, a cascaded control structure is established. PID acts as the inner loop for stability, and DMC as the outer loop corrects the hot helium temperature setpoint, achieving cascaded control for cold helium temperature in multi-modular high temperature gas-cooled reactors. Numerical simulations based on a 1000MW ten-module high temperature gas-cooled reactor program validated the effectiveness of the proposed control method. The results demonstrate that the controller can effectively regulate the cold helium temperature without compromising the control of other key variables.

关键词： Multi-modular high temperature gas-cooled reactor dynamic matrix control Cascade control

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dynamic matrix control of thermal power for multiple nuclear steam supply system modules 21st

Dynamic matrix control of thermal power for multiple nuclear...

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21st IFAC World Congress on Automatic control - Meeting Societal Challenges

作者： Jiang, Di Dong, Zhe Tsinghua Univ Key Lab Adv Reactor Engn & Safety Collaborat Innovat Ctr Adv Nucl Energy Technol Ch Inst Nucl & New Energy Technol INETMinist Educ Beijing 100084 Peoples R China

To suppress the fluctuation from both load side and intermittent renewable energy (IRE), nuclear power plants (NPPS) should be operated in load-following mode to improve economic competitiveness. The modular high temperature gas-cooled reactor (MHTGR) belongs to the category of small nuclear reactor and is suitable for load-following by the virtue of online refueling ability and inherent safety. To realize economies of scale for MHTGR, multi-modular scheme that multiple nuclear steam supply system (NSSS) modules are connected in parallel providing superheated steam for common turbine is recommended to achieve desired power ratings. However, because of the large heat capacity in the pebble-bed of MHTGR and thermal coupling of different NSSSs through common secondary loop fluid network, the current control strategy which suppresses the nuclear power, coolant temperatures measurement from their set-points without considering thermal dynamic of NSSS itself, may not favorable for heat transfer in the NSSS. To improve the load-following ability, a multivariable dynamic matrix control (DMC) is constituted to dynamic compensate the thermal energy variation of NSSS. The implementation of the DMC has a typical cascade structure, where DMC revises the set-points of NSSS module in outer loop and the existing PID control law is adopt for stabilization in inner loop. Numerical results show that this cascade dynamic matrix control can improve the transient of thermal power under power maneuvering. Copyright (C) 2020 The Authors.

关键词： Multi-nuclear steam supply systems cascade control dynamic matrix control thermal power optimization modular high temperature gas-cooled reactor

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dynamic matrix control for Active Queue Management Based on Step Response Model

Dynamic Matrix Control for Active Queue Management Based on ...

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8th World Congress on Intelligent control and Automation (WCICA)

作者： Wang, Ping Chen, Hong Lu, Xiaohui Jilin Univ Dept Control Sci & Engn Changchun 130025 Peoples R China

ISBN: (纸本)9781424467129

Most of existing active queue management (AQM) algorithms were designed on the fluid model of TCP/AQM dynamics which ignores the slow start and TCP timeout mechanism. Modeling TCP flows more precisely is very important to study AQM performance. To address this problem, this paper develops the step response model of TCP/AQM network based on the dumbbell topology in NS2. Then a novel AQM algorithm (DM-AQM) based on dynamic matrix control (DMC) is proposed in dynamic TCP networks. According to the predicted future queue length in data buffer, early packets at router are dropped reasonably so that the queue length reaches the desired value with minimal tracking error. The simulation results show that DM-AQM algorithm outperforms RED and PI in terms of stability and responsiveness.

关键词： active queue management step response model dynamic matrix control

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dynamic matrix control for a single-phase inverter 30

Dynamic matrix control for a single-phase inverter

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30th IEEE International Symposium on Industrial Electronics (ISIE)

作者： Alvarez, Carlos Erazo, Paolo Arcos-Aviles, Diego Martinez, Wilmar Univ Fuerzas Armadas ESPE Dept Elect & Elect Engn Sangolqui Ecuador Univ Fed Rio de Janeiro Elect Engn Dept Rio De Janeiro Brazil Katholieke Univ Leuven ESAT Dept Elect Engn Diepenbeek Belgium

ISBN: (纸本)9781728190235

In recent years, the model predictive control (MPC) has become a powerful control technique capable of dealing with nonlinearities of complex and non-complex systems. This paper presents the implementation of a dynamic matrix control algorithm applied to a single-phase photovoltaic inverter for its application in isolated areas. The proposed algorithm is evaluated in Matlab/Simulink for reference signal tracking and disturbance rejection. The experimental validation is performed at the Federal University of Rio de Janeiro through Hardware-In-the-Loop testing, using a Typhoon HIL402 real-time emulator machine and a dSPACE DS1103 controller board. The results show that this control algorithm is robust to load variations and has a fast response to reference change and disturbance rejection.

关键词： dynamic matrix control single-phase inverter photovoltaic generation model predictive control hardware-in-the-loop testing

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