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第27届中国过程控制会议（CPCC2016）

作者： Kaixiang Peng Bingzheng Wang Liang Ma Mengyuan Wang Key Laboratory for Advanced Control of Iron and Steel Process of Ministry of Education School of Automation and Electrical EngineeringUniversity of Science and Technology Beijing

In this paper,considering the multi-mode characteristics of industrial process data,a novel multi-mode process monitoring method integrating effectively Gaussian mixture model with total projection to latent structures is *** method aims to handle the problem about performance monitoring of multi-mode *** first,principal component clustering is implemented based on optimal Gaussian distribution and statistical parameters acquired by GMM ***,after building the monitoring covariance model,the multi-mode total projection to latent structures(MTPLS) model is established to describe the statistical properties of the process by using the information of ***,a comprehensive statistics index is defined which is based on Bayesian theory,according to posterior probability of the monitored samples belonging to each Gaussian *** method can ensure the implementation of on-line fault monitoring for multi-mode *** validity of the proposed method is verified by the simulation of TE process data in this paper.

关键词： Gaussian Monitoring of Multi-mode Industrial process with Finite Gaussian Mixture Models

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Prediction of Air Pollution Based on FCM-HMM Multi-model

Prediction of Air Pollution Based on FCM-HMM Multi-model

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第35届中国控制会议

作者： Ling Wang Xi-yuan Xiao Jian-yao Meng School of Automation and Electrical Engineering University of Science and Technology Beijing Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education)

ISBN: (纸本)9781509009107

Air pollution is a growing problem arising from various activities and events. Monitoring and prediction of air pollution index remains an important public health concern. In this paper, FCM-HMM Multi-model is proposed to model the air pollution atmosphere system. First, FCM-HMM clustering is developed to mine the inherent states behind the meteorological observation sequence. Second, TS fuzzy inference multi-model is constructed for each state to predict the air pollution index. The experiment results proved the feasibility of the model on air pollution data in Beijing.

关键词： Hidden markov model Fuzzy c-means TS fuzzy inference multi-model Air pollution index(API)

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An improved fuzzy logic controller for speed optimization of harry-ward type motor

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International Journal of Simulation: Systems, Science and Technology 2016年第26期17卷 36.1-36.9页

作者： Li, Zairan Shi, Kai Cui, Tongzhan Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin300072 China Wenzhou Vocational & Technical College Wenzhou325035 China

Harry-Ward control system is a widely used speed control system of DC motors. In this paper, we propose a fuzzy logic based speed control system further optimized by considering state variables and transfer functions. The simulation is performed using the tool Simulink in Matlab. The fuzzy control method is improved to detect errors of input signals, filter the whole process and change the error signals. The simulation shows that the fuzzy logic controller algorithm gives better performance compared with conventional control, largely reduces the error in speed, and continuously adapts to give a more robust approach to the motor speed control system. Several experiments are performed and we conclude that the proposed algorithm gives higher efficiency of the speed control in motor. © 2017, UK Simulation Society. All rights reserved.

关键词： Errors

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Adaptive Backstepping Tracking control of a 6-DOF Unmanned Helicopter

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IEEE/CAA Journal of Automatica Sinica 2015年第1期2卷 19-24页

作者： Bin Xian Jianchuan Guo Yao Zhang the Institute of Robotics and Autonomous System Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and AutomationTianjin University

This paper presents an adaptive backstepping control design for a class of unmanned helicopters with parametric uncertainties. The control objective is to let the helicopter track some pre-defined position and yaw trajectories. In order to facilitate the control design, we divide the helicopter's dynamic model into three subsystems. The proposed controller combines the backstepping method with online parameter update laws to achieve the control objective. The global asymptotical stability (GAS) of the closed-loop system is proved by a Lyapunov based stability analysis. Numerical simulations demonstrate that the controller can achieve good tracking performance in the presence of parametric uncertainties. © 2014 Chinese Association of automation.

关键词： Backstepping Closed loop control systems Closed loop systems controllers Flight dynamics Helicopters

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Fault Tolerant Flight-control via control Allocation for Reusable Launch Vehicles with Aerodynamic control Surfaces Stuck

Fault Tolerant Flight-Control via Control Allocation for Reu...

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第35届中国控制会议

作者： Dezhi Xu Yao Tang Nan Ji Key Laboratory of Advanced Process Control for Light Industry(Ministry of Education)Institute of Automation Jiangnan University Editorial Office of Journal Systems Engineering and Electronics

ISBN: (纸本)9781509009107

In this paper,a reconfiguration flight-control via control re-allocation is developed for a reusable launch vehicle(RLV) under aerodynamic control surfaces *** dynamic control re-allocation scheme is based on real-time computation of linear matrix inequalities(LMIs).In the approach proposed here,control allocation is formulated as an optimization problem to minimize the performance *** into account non-negligible dynamics of the actuators with hard constraints,the presented scheme extends the existing algorithms by providing asymptotic tracking of time-varying input commands for a class of ***,simulation results of X-3 3 reentry vehicle model dynamic show the effectiveness of the reconfiguration approach developed in this study.

关键词： Actuator faults stuck fault-tolerant control(FTC) linear matrix inequalities(LMIs) reusable launch vehicle(RLV)

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Stabilization of Discrete-Time Switched Systems with All Unstable Modes 34

Stabilization of Discrete-Time Switched Systems with All Uns...

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第三十四届中国控制会议

作者： WANG Yijing ZOU Yanchao LI Shulan ZUO Zhiqiang Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and AutomationTianjin University

ISBN: (纸本)9781467374439

Stabilization problem for discrete-time switched systems with all unstable modes is investigated in this paper. Following the idea of getting into each unstable mode and analyzing its internal behavior, the state dynamical decomposition technique is used to convert such a problem to an equivalent one for the inter-decoupled switched systems. The proposed mode-dependent average dwell time approach(MDADT) ensures each sub-state switched system is globally exponentially stable. Moreover, a periodical switching law is designed to guarantee the asymptotic stability of discrete-time switched systems. Finally, a numerical example is given to show the validity of the main results.

关键词： Discrete-time switched systems,Stabilization,Mode-dependent average dwell-time(MDADT),Unstable modes,State dynamical decomposition

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Finite-Time Consensus of Double Integrator Multi-Agent Systems Subject to Input Saturation 34

Finite-Time Consensus of Double Integrator Multi-Agent Syste...

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第三十四届中国控制会议

作者： ZUO Zhiqiang ZHANG Zhicheng WANG Yijing Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University

ISBN: (纸本)9781467374439

This paper investigates the finite-time consensus problem for double integrator multi-agent systems where each agent is subject to input saturation. The global leader-following consensus can be achieved in finite time over directed and detailbalanced communication topology under the proposed control protocol, which employs a priori saturation in order to deal with the constraints imposed on the control input and simplify the analysis. Utilizing the tools from the algebraic graph theory, Lyapunov theory and homogeneity of system dynamics with dilation, we prove in a universal way that our designed consensus protocol can solve the global finite-time consensus problem. The effectiveness of the theoretical result is illustrated with numerical simulations.

关键词： Multi-agent systems,Finite-time consensus,Input saturation,Double integrator dynamics,Directed topology

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Electrical Resistance Tomography System with Long-Distance Data Transmission Function 34

Electrical Resistance Tomography System with Long-Distance D...

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第三十四届中国控制会议

作者： ZHANG Jinyu TAN Chao DONG Feng Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and AutomationTianjin University

ISBN: (纸本)9781467374439

As a type of process parameter measuring technique, Electrical Resistance Tomography(ERT) has the characteristic of simple structure and working mechanism, low cost, no radiation, rapid response and ability of visualization. It is suitable for the process parameter monitoring of closed pipes and vessels in the industrial production process. However, the existing ERT systems are mainly used the design scheme of laboratory instrumentation, and the data acquisition and processing unit uses only the local integration mode. It doesn't have long-distance data transmission function, are unable to connect with industrial control systems, and limits its application in actual industrial process. In order to solve the above problems, a design scheme of ERT System with long-distance data transmission function is put forward. An optical fiber data transmission mode based on Aurora protocol is applied to implement the high speed and reliable data transmission. By check the control words based on the finite state machine, the remote switching of system working modes is realized. The ERT system with long-distance data transmission function is verified with experiments.

关键词： Electrical Resistance Tomography,system design,long-distance data transmission,optical fiber,Aurora protocol

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LQG control for Networked control Systems in the Presence of Data Packet Drops

LQG Control for Networked Control Systems in the Presence of...

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第35届中国控制会议

作者： Kun Xu Jianming Zhou Fei Liu Guoxiang Gu Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Institute of AutomationJiangnan University School of Electrical Engineering and Computer Science Louisiana State University

ISBN: (纸本)9781509009107

We study the linear-quadratic-Gaussian(LQG) control for multiple-input/multiple-output(MIMO) discrete-time networked control systems(NCSs) in the presence of data packet drops that are modeled as multiplicative noises,assumed to be white *** will first analyze the mean square(MS) stability problem for MIMO feedback systems in the presence of the multiplicative noises,and provide a new useful MS stability *** LQG control under packet data drops will then be studied in which the critical probability of the received data packet can be computed by solving a set of linear matrices inequalities(LMIs),beyond which the modified algebraic Riccati equations,associated with the LQG control,admit the stabilizing *** a numerical example from the known literature is employed to illustrate our results.

关键词： Networked control system LQG control data packet drop

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Tracking of Stribeck Friction based on Second-Order Linear Extended State Observer

Tracking of Stribeck Friction based on Second-Order Linear E...

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第28届中国控制与决策会议

作者： Lijun Wang Qing Li Ruihua Jiao Yixin Yin Yinan Feng Yichang Liu School of Automation & Electrical Engineering University of Science and Technology Beijing Key Laboratory of Advanced Control of Iron and Steel Process(Ministry of Education) University of Science and Technology Beijing

ISBN: (纸本)9781467397155

To deal with the problem of observing or tracking for discontinuous signal,a kind of second order linear extended state observer(LESO) algorithm is *** ESO estimating the uncertain disturbance,a simple second-order linear ESO with less tunable parameters was designed in the absence of dynamic model,and the method of discrete time realization was *** proposed LESO was applied to the tracking of discontinuous Stribeck Friction in comparison with adaptive state *** results show that the proposed ESO is effective and practical.

关键词： Extended State Observer Adaptive State Observer Stribeck Friction Discontinuous Track

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