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Design and Implementation of an Integrated Fuzzy Logic Controller for a multi-input multi-output system

DEFENCE SCIENCE JOURNAL 2011年第3期61卷 219-227页

作者： Patil, S. S. Bhaskar, P. Sudheer, L. Shrimanth HKES SLN Coll Engn Dept ECE Raichur 584135 Karnataka India Gulbarga Univ PG Ctr Dept Instrumentat Technol Raichur 584133 Karnataka India

The design and real time implementation of an integrated fuzzy logic controller (IFLC) for a multiple-input multiple-output (MIMO) system is presented. The design of IFLC for an uncoupled MIMO system has been discussed. This study develops a combination of fuzzy and PID controllers (PIDC) to improve the control performance of a two-input-two-output (TITO: angular position, and rotational speed) system. These parameters play a vital role in radar-tracking system for military applications. To verify the applicability of proposed controller, two-motor unit plant along with indigenously designed multi-channel analog interface board of 16-bit precision is used. The proposed MIMO control system is interfaced to a PC through its parallel port. The performance of the system is studied by subjecting it to various standard test signals. The IFLC performs better than the other two controllers in tracking the input command for linear as well as nonlinear inputs such as step, square, triangular, and sine waves is observed.

关键词： dc motor PID controller integrated fuzzy logic controller multi-input multi-output system MIMO control system

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State Trajectory Generation of MIMO multirate Feedforward for Perfect Tracking Control in High-Precision Stage 44

State Trajectory Generation of MIMO Multirate Feedforward fo...

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44th Annual Conference of the IEEE Industrial-Electronics-Society (IECON)

作者： Mae, Masahiro Fujimoto, Hiroshi Univ Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 2778561 Japan

ISBN: (纸本)9781509066841

multirate feedforward control is widely used for the control of precise systems such as the high-precision stages and the hard disk drives. In the multirate feedforward control, it is possible to obtain a control input that achieves perfect tracking for the state trajectory. Therefore, it is necessary to generate a state trajectory corresponding to the output trajectory in advance. In this paper, the authors propose a state trajectory generation from an output trajectory for a multi-input multi-output system using singular value decomposition. The effectiveness of this method is verified through simulation and experiments.

关键词： singular value decomposition state trajectory generation multirate feedforward control perfect tracking control multi-input multi-output system high-precision stage

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A Switching Control Strategy for multi-input Aero-engine systems

A Switching Control Strategy for Multi-input Aero-engine Sys...

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第三十八届中国控制会议

作者： Chao Chen Lijun Long Linghan Li Xiaoqi Mao AECC Shenyang Engine Research Institute College of Information Science and Engineering Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

This paper studies the multi-objective control design problem for the aero-engines. A novel switching control strategy is proposed to achieve the trade-off between safety and response performance for aero-engines. multiple control inputs are considered simultaneously to make full use of potential of the engine. Control design thus becomes complicated. Applying the descriptor linear system theory and the linear quadratic regulator technique, we design the safety protection controllers for the limited outputs. Simulation results of a two-spool turbofan aero-engine verify the effectiveness of the proposed switching control strategy, and indicate that the proposed scheme brings improvement on both safety and transient performance.

关键词： Switching control multi-input multi-output system safety protection control for aero-engines descriptor linear system linear quadratic regulator

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Twin-Rotor MIMO system and Its Control using Interval Type-2 Fuzzy Logic 5

Twin-Rotor MIMO System and Its Control using Interval Type-2...

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5th IEEE International Symposium on Robotics and Intelligent Sensors (IEEE IRIS)

作者： Kafi, Mohamed R. Chaoui, Hicham Miah, Suruz Univ Kasdi Merbah Ouargla Lab Genie Elect Ouargla Algeria Carleton Univ Dept Elect IRES Ottawa ON Canada Bradley Univ Elect & Comp Engn Peoria IL 61625 USA

ISBN: (纸本)9781538613429

This manuscript presents the application of interval type-2 fuzzy logic sets for the control of a twin-rotor multi-input multi-output (MIMO) system (TRMS). As such, accurate tracking with robustness to structured/unstructured uncertainties is achieved. Unlike other control methodologies, no prior knowledge of the system dynamics and/or parameters is needed. Simulation results of different TRMS configurations illustrate the performance of the control scheme in transient and steady-state conditions. Furthermore, the proposed interval type-2 fuzzy control strategy is compared against its type-1 counterpart.

关键词： Nonlinear model multi-input multi-output system type-2 fuzzy logic unmanned aerial systems

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Build-in wiretap channel I with feedback and LDPC codes by soft decision decoding

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IET COMMUNICATIONS 2017年第11期11卷 1808-1814页

作者： Zhang, Gaoyuan Wen, Hong Pu, Jiexin Tang, Jie Henan Univ Sci & Technol Sch Elect & Informat Engn Luoyang Peoples R China Univ Elect Sci & Technol China Natl Key Lab Sci & Technol Commun Chengdu Sichuan Peoples R China

Many approaches to build a wiretap channel (WTC) by multi-input multi-output system have been introduced. Different from those approaches, the authors propose a feedback method combined with the low-density parity-check (LDPC) codes for building the WTC I (WTC-I) to achieve unconditional security under single-input single-output system by the soft decision decoding. The novel approach establishes the WTC-I on both the binary symmetric channel and binary input additive white Gaussian noise channel. In order to keep the eavesdropper be fully ignorant about the secret information, randomness is added to the feedback signals from the destination by taking advantage of feedback. In addition, the message to be sent is encoded by the LDPC codes such that it can be correctly decoded by a legitimate receiver. Furthermore, the secret information transmission capacity can be improved by the soft decision decoding.

关键词： decoding parity check codes MIMO communication telecommunication security AWGN channels build-in wiretap channel I LDPC codes soft decision decoding multi-input multi-output system MIMO system low-density parity-check codes WTC I unconditional security single-input single-output system binary symmetric channel binary input additive white Gaussian noise channel feedback signals legitimate receiver secret information transmission capacity

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A Novel multi-point Temperature Control Method Based on Slow Response Mode 43

A Novel Multi-point Temperature Control Method Based on Slow...

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43rd Annual Conference of the IEEE-Industrial-Electronics-Society (IECON)

作者： Hashimoto, S. Yuan, L. Yoshida, K. Izaki, K. Kihara, T. Ikeda, R. Jiang, W. Gunma Univ Div Elect & Informat Kiryu Gunma Japan RKC Instrument Inc R&D Div Ohta Ku Tokyo Japan Yangzhou Univ Dept Elect Engn Yangzhou Jiangsu Peoples R China

ISBN: (纸本)9781538611272

Thermal processing systems that incorporate temperature control are needed in order to achieve high-quality and high-performance processing. In the present paper, in response to the demand for proper transient responses and in order to provide more closely controlled temperatures, a novel multi-point temperature control method based on the slow response mode is proposed. In the proposed method, the temperature differences and transient characteristics of all points can be controlled by making the output of other modes follow the output of the slow mode. The effectiveness of the proposed method is evaluated through simulations.

关键词： Temperature control PID control Dead time coupling multi-input multi-output system

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Teaching multiloop control of nonlinear system: three tanks case study

Teaching multiloop control of nonlinear system: three tanks ...

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11th IFAC Symposium on Advances in Control Education (ACE)

作者： Rosinova, Danica Balko, Peter Puleva, Teofana Slovak Univ Technol Bratislava Inst Automot Mechatron Bratislava Slovakia Tech Univ Sofia Fac Automat Sofia Bulgaria

The paper focuses on teaching advanced MIMO control topics using hydraulic system model. Basic steps of nonlinear MIMO system control design are shown on three tank plant model. After modelling part, comprising nonlinear model based on first principles and its linearization about equilibrium point, two approaches to MIMO system control are demonstrated. The first approach designs a full state feedback PI controller in state space, the second one uses multi-loop approach with individual loop design, overall stability condition is used to detune loop PI controllers for the overall system issues. The results are analysed and compared, important teaching issues are indicated. (C) 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： modelling multi-input multi-output system multi-loop control PI controller nonlinear system robust stability

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multi positive feedback control method for active vibration suppression in flexible structures

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MECHATRONICS 2016年 33卷 23-33页

作者： Omidi, Ehsan Mahmoodi, S. Nima Shepard, W. Steve, Jr. Univ Alabama Dept Mech Engn Nonlinear Intelligent Struct Lab Tuscaloosa AL 35487 USA

This paper presents a novel controller for active vibration reduction in piezoelectric-actuated flexible structures. The new multi Positive Feedback (MPF) control consists of two sections where each operates using a set of actuators. One section uses position and the other uses velocity feedback to perform real-time vibration control. The 90 phase difference between the feedbacks leads to non-zero resultant control output. This property results in a more effective operation of the available actuators. Sections of the MPF controller are designed based on the concept of the Modified Positive Position Feedback (MPPF) control approach, where the damping of the control system is increased by addition of a first-order term parallel to a second-order compensator. The controller is designed to simultaneously control single or multi resonant frequency vibrations. Due to the high influence of gain values on the control performance, H-2 and H-infinity norms are used to optimize these gains. For validation purposes, the controller is verified here numerically and experimentally for vibration control of a clamped-clamped beam and a cantilever at resonance. According to the results, the MPF controller has a superior performance compared to the MPPF controller, in addition to effective suppression on both vibration displacement and velocity. Using the MPF controller in multimode and by utilizing the H-infinity gain optimization method, vibration displacement amplitudes were reduced to 19.4% of the uncontrolled state for the beam. (C) 2015 Elsevier Ltd. All rights reserved.

关键词： Active vibration control Collocated system H-2 and H-infinity norms multi-input multi-output system Piezoelectric actuator

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A New Approach to Adaptive Control of multi-input multi-output systems Using multiple Models

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JOURNAL OF DYNAMIC systemS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME 2015年第9期137卷 091009-091009页

作者： Ahmadian, Narjes Khosravi, Alireza Sarhadi, Pouria Babol Noushirvani Univ Technol Fac Comp & Elect Engn Babol Sar *** Iran Islamic Azad Univ South Tehran Branch Dept Control Engn Tehran 443511365 Iran

This paper proposes a novel method as second level adaptation using multiple models to identify and control of a class of multi-input multi-output (MIMO) systems. Different uncertain environments change the system parameters and create multiple operating conditions. These conditions are designed as multiple identification models in a model bank using adaptive laws. These models are evaluated using some estimated weighting factors based on the errors between each of the models and the actual plant. The evaluated models are effectively used in identification and control process. Bounded signals, proper closed-loop tracking performance, and rapid and accurate parameter convergence to their real values are achieved through simulation results.

关键词： multiple models multi-input multi-output system second level adaptation

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Agile control of CO₂ capture technology for maximum net operating revenue

Agile control of CO<sub>2</sub> capture technology for maxim...

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11th IFAC Symposium on Dynamics and Control of Process systems including Biosystems

作者： Manaf, Norhuda Abdul Qadir, Abdul Abbas, Ali Univ Sydney Sch Chem & Biomol Engn Sydney NSW 2006 Australia

This paper uses a multi-layered control scheme consisting of model predictive control (MPC) and mixed integer non-linear programming (MINLP) for the analysis of power plant net operating revenue when retrofitted with a post-combustion carbon capture (PCC) plant. The capability of the proposed control scheme is examined for 24-hour operations of an integrated plant (power plant with PCC) in the years 2011 and 2020. The control scheme is tested in response to variability in upstream power plant dynamic loads. The agility of the control scheme subject to forecast 2020 electricity and carbon prices is shown to result in yearly net operating revenue of approximately 12% of the gross revenue. Whereas, the same integrated plant generates a net operating revenue loss of roughly 13% of the gross revenue under 2011 electricity and carbon prices. (C) 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Algorithm Automatic control (close-loop engineering) Optimization devices Plant wide multi-input multi-output system Nonlinear system

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