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第三十三届中国控制会议

作者： FENG Zhen FU Jing Qi WANG Yang School of Mechatronic Engineering and Automation Shanghai University College of Mechatronics and Control Engineering Hubei Normal University School of Electric Engineering Shanghai DIANJI University

ISBN: (纸本)9781479947249

In wireless sensor networks,this paper puts forward a distributed fault detection algorithm to solve the node failure *** takes into account the spatial correlation of network node,based on the way of weighted distance,compares its own reading with the weighted value to judge the fault ***,the feasibility and effectiveness of the algorithm is demonstrated via computer *** simulation results show that the correct rate of fault detection is improved,and the false alarm rate of fault detection is reduced.

关键词： Wireless sensor networks,fault detection,spatial correlation

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Online identification of multivariable nonlinear processes with iterative structure learning and application to a diesel engine 19

Online identification of multivariable nonlinear processes w...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Kowalczyk, Marek Yi, Boliang Isermann, Rolf Institute of Automatic Control and Mechatronics Laboratory of Control Engineering and Process Automation Technical University Darmstadt Germany

ISBN: (纸本)9783902823625

This contribution presents a new methodology for the online identification, which allows the modeling of the stationary and dynamic behavior of nonlinear combustion engines with many input and output variables in short time with an appropriate model structure. The used models are local polynomial model trees. The necessary enhancements and adaptations of the identification algorithm for local polynomial model trees for the online methodology are presented. To enable an online identification, not only the parameters but also the structure of the models has to be adapted to the ongoing measuring procedure at a test bench. This structure adaptation methods use iteratively recorded measured data for the determination of an optimized model partition and regressor selection regarding the quality and complexity of the model. This maximizes the iterative improvement of the mathematical model, leading to a reduced test bench time. The applicability of the developed methodology is shown for the identification of a model from both, an artificial test function as well as a real diesel engine. © IFAC.

关键词： Iterative methods

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Implementation of Input Shaping control to Reduce Residual Vibration in Industrial Network Motion System

Implementation of Input Shaping Control to Reduce Residual V...

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International Conference on control, automation and Systems

作者： Ha-Quang-Thinh Ngo Quoc-Chi Nguyen Won-Ho Kim Control and Automation Lab Department of Mechatronics Engineering Ho Chi Minh City University of Technology Department of Mechatronics Engineering Ho Chi Minh City University of Technology Department of Intelligent System Engineering Dong-Eui University

ISBN: (纸本)9781479999767

In this paper, a method to implement the input shaping control in Mechatrolink-III motion system is introduced. Firstly, the underdamped system is theoretically built by modeling. Then, the motion controller of Mechatrolink-III network is designed to apply the input shaper for reducing residual vibration in manufacturing machine. Later, the experimental beam is set-up to verify the effective performance of input shaping technique. The validity of the control strategy is practically performed by testing ZV, ZVD and ZVDD input shapers. Especially, the successful implementation provides an opportunity to apply the input shaper for multi-axes since Mechatrolink-III motion controller supports up to 32 axes.

关键词： Motion control Input shaping Mechatrolink-III Industrial network Residual vibration

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A surface acoustic wave sensor for the treatment of hydrocephalus

A surface acoustic wave sensor for the treatment of hydrocep...

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作者： Zhang, Bing Hu, Hong Li, Tianli Department of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen University Town Shenzhen518055 China College of Mechatronics and Control Engineering Shenzhen University Shenzhen518060 China

The hydrocephalus shunt system has a high risk of malfunction, which could lead to serious problems for patients. It is therefore important to monitor intracranial pressure (ICP). In this paper, a novel ICP sensor is presented to provide real-time pressure measurement for hydrocephalus patients. Surface acoustic wave technology is adopted in the design of the sensor so that it can interrogate wirelessly;and no battery is needed for providing energy, hence it could have a longer life span. The finite element method (FEM) simulation is performed to investigate the input frequency of the sensor;a prototype is fabricated, and the corresponding measurement system based on the NI PXI platform is established to analyze the performance of the sensor. The sensor has a measurement range of 0-14 kPa with sensitivity of 2.95°/kPa. The experimental results strongly suggest that the proposed sensor has the potential in monitoring ICP. © 2014 World Scientific Publishing Company.

关键词： Finite element method

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Online Identification of Multivariable Nonlinear Processes with Iterative Structure Learning and Application to a Diesel Engine

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IFAC Proceedings Volumes 2014年第3期47卷 9216-9222页

作者： Marek Kowalczyk Boliang Yi Rolf Isermann Institute of Automatic Control and Mechatronics Laboratory of Control Engineering and Process Automation Technical University Darmstadt Germany

关键词： Engine modeling Mechatronic combustion engine Iterative measurements Identification methods Online identification Model structure adaptation

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Optimal Tracking Performance of MIMO Networked control Systems with Communication Constraints

Optimal Tracking Performance of MIMO Networked Control Syste...

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第26届中国控制与决策会议

作者： Chao-Yang Chen Ming Chi Zhi-Hong Guan Xian-He Zhang Xi-Sheng Zhan College of Automation Huazhong University of Science and Technology College of Mechatronics and Control Engineering Hubei Normal University

In this paper, we study the optimal tracking performance problem of continuous-time linear multi-input multi-output(MIMO) networked control systems. The unstable and non-minimum phase systems is considered. The output feedback path is subject to quantization noise, additive white Gaussian noise and bandwidth constraints, and encoding and decoding are considered. The reference input is a random signal. The performance is measured through the tracking error energy, and two-parameter controller is considered. The explicit expression of the tracking performance has been obtained. The results show that the unstable poles and non-minimum phase zeros of the plant, the channel noise,bandwidth, quantization noise and coder will aggravate the optimal tracking performance.

关键词： Tracking Performance,Channel Noise,Quantization Noise,Bandwidth Constraint

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A robust algorithm for autotuning controllers in mechatronic modules

A robust algorithm for autotuning controllers in mechatronic...

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WGP Congress 2014

作者： Friedrich, Christian Stanicki, Andreas Bröcker, Markus Lechler, Armin Verl, Alexander Universität Stuttgart Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstraße 36 Stuttgart Germany Schunk GmbH and Co. KG R and D Automation and Mechatronics Bahnhofstraße 106-134 Lauffen/Neckar Germany Hochschule Heilbronn Laboratory for Control Engineering and System Simulation Max-Planck-Straße 39 Heilbronn Germany

ISBN: (纸本)9783038352457

Electric actuators are an important part of every manufacturing system. Often it is a problem to get a good motion control configuration which allows high performance tasks. This contribution shows how the mechanical load and the self-dynamics of the system associate. Based on this, it is possible to formulate an identification algorithm to estimate the mechanical load. Now all system parameters are known and the controller can be computed automatically. Therefore we show the results in an experiment with a classic cascaded and a flatness-based controller. © (2014) Trans Tech Publications, Switzerland.

关键词： Actuators

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Identification of linear parameter varying systems with missing output data using generalized expectation-maximization algorithm 19

Identification of linear parameter varying systems with miss...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Yang, X. Xiong, W. Huang, B. Gao, H. Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin Heilongjiang150080 China Jiangnan University Wuxi Jiangsu214122 China Department of Chemical and Materials Engineering University of Alberta EdmontonABT6G 2G6 Canada Research Institute of Mechatronics and Automation Bohai University Jinzhou121013 China

ISBN: (纸本)9783902823625

This paper is concerned with the identification problems of linear parameter varying (LPV) systems with randomly missing output data. Since one local linearized model cannot capture the global dynamics of the nonlinear industrial process, the multiple-model LPV model in which the global model is constructed by smoothly weighted combination of multiple local models is considered here. The problem of missing output variables data is commonly encountered in practice. In order to handle the multiple-model identification problems of LPV systems with incomplete data, the local model is taken to have a finite impulse response (FIR) model structure and the generalized expectation-maximization (EM) algorithm is adopted to estimate the unknown parameters of the global LPV model. To avoid the problems of ill-conditioned matrices and high sensitivity of parameters to noise, the prior information on the coefficients of each local FIR model is employed to construct the prior probability of unknown parameters. Then the maximum a posteriori (MAP) estimates of the global model parameters are derived via the generalized EM algorithm. The numerical example is presented to demonstrate the effectiveness of the proposed method. © IFAC.

关键词： Parameter estimation

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Lower bound of tracking performance with finite control energy and channel energy constraint

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控制理论与应用（英文版） 2013年第3期11卷 409-414页

作者： Baoxian WANG Zhihong GUAN Fushun YUAN Xisheng ZHAN College of Automation Huazhong University of Science and Technology School of Mathematics and Statistics Anyang Normal University College of Mechatronics and Control Engineering Hubei Normal University

This paper studies the tracking performance of the single-input single-output （SISO）, finite dimensional, linear and time-invariant （LTI） system over an additive white Gaussian noise （AWGN） channel with finite control energy and channel input energy constraint. A new performance index is proposed which is minimized over all stabilizing two-degree-of-freedom controllers. The explicit expressions of the lower bound of the tracking performance and the minimum of signal-to-noise required are obtained. The results show that the lower bound is correlated to the unstable pole, nonminimum phase zero and the channel scaling factor. Finally, one example is given to validate the conclusions by adopting the special inner-outer factorization.

关键词： Optimal performance control energy Channel energy constraint Gaussian noise

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Stability and bifurcation analysis of new coupled repressilators in genetic regulatory networks with delays

Stability and bifurcation analysis of new coupled repressila...

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西南大学2014年全国博士生学术论坛(电子技术与信息科学领域)

作者： Guang Ling Zhi-Hong Guan Ding-Xin He Rui-Quan Liao Xian-He Zhang College of Automation Huazhong University of Science and Technology Wuhan 430074 China School of College of Automation Huazhong University of Science and Technology Wuhan 430074 China Petroleum Engineering College Yangtze UniversityJingzhou 420400 China College of Mechatronics and Control Engineering.Hubei Normal University Huangshi 435002 China

The genetic regulatory networks are complex dynamic systems which reflect various kinetic behaviors of living *** this paper, a new structure of coupled repressilators is introduced to exploit the underlying *** new coupled repressilator model consists of two identical repressilators inhibiting each other *** coupling delays are taken into *** existence of a unique equilibrium for this system is verified firstly, then the stability criteria for equilibrium are analyzed without and with coupling *** different functions on equilibrium and its stability played by related biochemical parameters in the structure including maximal transcription rate, coupling strength, the decay rate ratio between proteins and mRNAs, and coupling delays are *** last, several numerical simulations are made to demonstrate our results.

关键词： Coupled repressilators Stability Hopf bifurcation Coupling delays

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