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22nd International Congress of Chemical and process Engineering, CHISA 2016 and 19th Conference on process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2016

作者： De Jesus, S.S. Santana, A. Maciel Filho, R. Laboratory of Optimization Design and Advanced Control School of Chemical Engineering University of Campinas Campinas SP13083-970 Brazil Laboratory of High Pressure Process Department of Chemical Engineering and Environmental Technology University of Valladolid Valladolid47011 Spain

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An online performance monitoring using statistics pattern based kernel independent component analysis for non-Gaussian process

An online performance monitoring using statistics pattern ba...

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Annual Conference of Industrial Electronics Society

作者： Xin Peng Ying Tian Yang Tang Wenli Du Weimin Zhong Feng Qian Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai P. R. China Department of Electrical Engineering University of Shanghai for Science and Technology Shanghai P. R. China

An online monitoring method, which aims to deal with the high order non-Gaussian characteristics in chemical process, is proposed in this paper. In the framework of the proposed method, kernel based independent component analysis is utilized to identify the operation status of the chemical process and statistics pattern analysis is employed to combine with independent component analysis to extract high order information from the process so as to improve the monitoring performance. The modified statistics pattern analysis introduces the Mahalanobis distance into statistics pattern to analyze the inner structure relationship between the samples. Then, the validity and effectiveness of our proposed method is illustrated by applying to a representative non-Gaussian process, Continuous Stirred Tank Reactor (CSTR). The results show that the proposed method has its advantages when compared to other conventional Eigen-decomposition monitoring algorithms.

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High lactic acid production from molasses and hydrolysed sugarcane bagasse

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Chemical Engineering Transactions 2016年 50卷 307-312页

作者： De Oliveira, Regiane Alves Filho, Rubens Maciel Rossell, Carlos Eduardo Vaz Laboratory of Optimization Design and Advanced Process Control School of Chemical Engineering University of Campinas Brazil National Laboratory of Science and Technology of Bioethanol National Center for Research in Energy and Materials Brazil

ISBN: (纸本)9788895608419

In this work is presented a process with high lactic acid production as well as high sugar conversion and low by-products formation. The microorganism Lactobacillus plantarum uses preferably 6-carbon sugars. However, the xylose consumption occurs since the hexose concentration is not high. Lb. plantarum was shown to have a capacity for lactic acid production from cellulosic and hemicellulosic hydrolysates without detoxification. The results were similar to that using glucose, which is the source of carbon currently used by the lactic acid industry. Lactic acid is an organic acid with a hydroxyl and an acid functional group. It has an asymmetric carbon and it naturally occurs as two optical isomers, D and L lactic acid. Crystallinity and many other important physical properties such as rate of degradation, melting point and boiling point are controlled by the ratio of enantiomers used. Lactic acid production by fermentation has several advantages when compared to chemical synthesis, such as low temperatures, low energy consumption, better environmental concerns and high purity. Furthermore, by fermentation it is possible to obtain the optically pure lactic acid, while by chemical synthesis only the racemic mixture can be produced. Despite the wide variety of feedstock tested for the lactic acid production most of them have problems with price, seasonality, continuous availability for largescale production, fermentation rate, the amount of contaminants present, yields of lactic acid, formation of byproducts, location of lactic acid production plant due to both availability as logistics of transportation and use of it. Trying to find substrates that overcome some of these barriers, in this work is proposed the use of molasses from sugar industry, pentose and hexose from enzymatic hydrolysis of sugarcane bagasse aiming to produce lactic acid. Copyright © 2016, AIDIC Servizi S.r.l.,.

关键词： Lactic acid

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L2- L∞ State Estimation for Discrete-time Delayed Neural Networks with Missing Measurements and Randomly Occurring Sensor Linearity

L2- L∞ State Estimation for Discrete-time Delayed Neural Ne...

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第35届中国控制会议

作者： Hao Zhang Huaicheng Yan Hongbo Shi Hao Zhang Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education Department of Control Science and Engineering Tongji University

ISBN: (纸本)9781509009107

This paper is concerned with the L-L state estimation problem for discrete-time delay neural networks with missing measurements and randomly occurring sensor *** phenomena of missing measurements and randomly occurring sensor linearity are constructed with two sequences of random variables,which obey the partial Bernoulli distribution.A sufficient condition is firstly given such that the augmented filtering error system is stochastically stable with a guaranteed optimal L-L performance by solving a set of linear matrix inequalities(LMIs).Finally,a simulation example is given to show the effectiveness of the proposed method.

关键词： L2-L∞ state estimation discrete-time delayed neural networks missing measurements randomly occurring sensor linearity

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Enhanced process Monitoring via Time Space Coordinated-Locality Preserving Projection

Enhanced Process Monitoring via Time Space Coordinated-Local...

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第27届中国过程控制会议（CPCC2016）

作者： Yang Jian Song Bing Tan Shuai Shi Hongbo Key Laboratory of Advanced Control and Optimization for Chemical Process of the Ministry of Education East China University of Science and Technology

In this paper,a novel dimensionality reduction method,time space coordinated-locality preserving projections(TSCLPP) is proposed based on locality preserving projection(LPP).For the short sampling interval,except the data correlation in spatial scale,there exists data correlation in time scale as *** considering the correlation of sampling points in time and spatial scale simultaneously,TSCLPP constructs the adjacency graph by selecting adjacent points in time-sequence and Euclidean distance ***,the importance of the time-sequential neighbors is measured by the weight based on a time distance.A dual objective function with a weight index coordinating the relationship between time and space is constructed to compute the transformation ***'s T2 and squared prediction error(SPE) are established for process monitoring.A numerical case and the Tennessee-Eastman process(TEP) are employed for the experimental verification.

关键词： Enhanced process Monitoring via Time Space Coordinated-Locality Preserving Projection

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Input-Output Finite-Time Stability and Stabilization of Stochastic Fuzzy Systems With Randomly Occurring Uncertainties and Gain Fluctuations

Input-Output Finite-Time Stability and Stabilization of Stoc...

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World Congress on Intelligent control and Automation

作者： Jun Song Yugang Niu Yuanyuan Zou Key Laboratory of Advanced Control and Optimization for Chemical Process (East China University of Science and Technology) Ministry of Education Shanghai 200237 China

ISBN: (纸本)9781467384155

This paper studies the input-output finite-time stabilization problem of a class of fuzzy stochastic systems with randomly occurring uncertainties and (x, u)-dependent noises. By considering the randomly occurring gain fluctuations in controller gains, a fuzzy controller is designed to render the closed-loop system input-output finite-time stochastic stability with respect to some specified parameters. Through intensive stochastic analysis, a sufficient condition is established for the controller design via a convex optimization approach. A numerical example is exploited to demonstrate the effectiveness of the proposed design method.

关键词： Fuzzy systems Asymptotic stability Stability analysis Numerical stability Uncertainty Stochastic processes Aerospace electronics

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Robust Exponential Stability and L2-Gain Analysis for Uncertain Switched Nonlinear Cascaded Systems with Time-Varying Delay

Robust Exponential Stability and L2-Gain Analysis for Uncert...

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第35届中国控制会议

作者： Qian Yang Huaicheng Yan Hao Zhang Wen Yang Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education School of information Science and Engineering East China University of Science and Technology

ISBN: (纸本)9781509009107

The robust exponential stability and L-gain analysis of the uncertain switched nonlinear cascade systems with time varying delay are considered in this ***,a sufficient condition for robustly exponential stability is studied by using the average dwell-time method,piecewise Lyapunov function and free weighting matrix approach,and then the L-gain of the uncertain switched nonlinear cascaded systems with the external disturbance is ***,the switching law and the average dwell-time are ***,a numerical example is provided to illustrate the effectiveness of the proposed results.

关键词： Robust exponential stability L2-gain nonlinear cascade system average dwell-time time-varying delay

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Fast Modeling Ethylene Yield for Cracking Furnace via Transfer Learning based on Time Series

Fast Modeling Ethylene Yield for Cracking Furnace via Transf...

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第27届中国过程控制会议（CPCC2016）

作者： ZHOU Shuheng DU Wenli Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education Academy of Information Science and EngineeringEast China University of Science and Technology

An ethylene plant's main purpose is to convert hydrocarbon feedstock,usually natural gas liquids or naphtha,into a "cracked gas" that contains ethylene and other higher value products,by breaking carbon-carbon bonds in the *** process also results in the slow deposition of coke,a form of carbon,on the reactor *** coke layer on the internal tube skin reduces the cross section of the reactor tube,increases the pressure drop and also degrades the efficiency of the *** characteristic that continuous operational performance of cracking furnaces gradually decays within time brings challenge to the operational scheduling for the entire furnace *** it's normally time-consuming to develop a new process model for multiple feeds and different cracking furnaces in the new process *** this paper,a transfer learning method based on time series is proposed for fast modeling ethylene yields from the view of common characteristics that ethylene yield decays over *** to previous studies,the new model allows to take advantage of a small amount of newly labeled data to construct a high-quality prediction model for the new ***,it obtains satisfied short-term forecast *** studies demonstrate the efficacy of the developed methodology.

关键词： Fast Modeling Ethylene Yield for Cracking Furnace via Transfer Learning based on Time Series

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Cultivation of three microalgae strains under mixotrophic conditions for biodiesel production

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Chemical Engineering Transactions 2016年 50卷 409-414页

作者： Rios, Luisa F. Da Silva Soares, Carla Tasić, Marija B. Maciel, Maria R. Wolf Filho, Rubens Maciel University of Campinas Chemical Engineering Faculty Laboratory of Optimization Design and Advanced Process Control-Bioen Division Av. Albert Einstein 500 Campinas SP Brazil Faculty of Technology University of Niš Bulevar oslobodjenja 124 Leskovac16000 Serbia

ISBN: (纸本)9788895608419

Microalgal biomass have a potential to be used as feedstock for biodiesel production because of high photosynthetic rates, high biomass production, faster growth in comparison to traditional feedstocks and to not be competitive with food production. In this paper, the growth and lipid content of three microalgae strains, namely Chorella vulgaris, Desmodesmus sp. and Desmodesmus brasiliensis, were studied during 9 days of mixotrophic cultivation. The laboratory scale experiments were carried out in BG-11 media enriched with 10 g/L glucose at initial medium pH of 7.5, temperature of 26 ± 4 °C and light flux of 62 μE m-2 s-1. The highest biomass concentration of 3.82 mg/mL was found in the Desmodesmus brasiliensis, followed with 3.64 mg/mL of Desmodesmus sp. and 3.32 mg/mL of Chorella vulgaris strain. However, the Desmodesmus brasiliensis had the lowest lipid content of 6%, followed with 13.2% of Chorella vulgaris, whereas the Desmodesmus sp. strain produced the highest lipids (19.45%). Copyright © 2016, AIDIC Servizi S.r.l.,.

关键词： Feedstocks

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An effective discrete artificial bee colony algorithm for flow shop scheduling problem with intermediate buffers

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Journal of Central South University 2015年第9期22卷 3471-3484页

作者：张素君顾幸生 School of Mechanical and Electrical Engineering Henan Institute of Science and Technology Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology

An effective discrete artificial bee colony(DABC) algorithm is proposed for the flow shop scheduling problem with intermediate buffers(IBFSP) in order to minimize the maximum completion time(i.e makespan). The effective combination of the insertion and swap operator is applied to producing neighborhood individual at the employed bee phase. The tournament selection is adopted to avoid falling into local optima, while, the optimized insert operator embeds in onlooker bee phase for further searching the neighborhood solution to enhance the local search ability of algorithm. The tournament selection with size 2 is again applied and a better selected solution will be performed destruction and construction of iterated greedy(IG) algorithm, and then the result replaces the worse one. Simulation results show that our algorithm has a better performance compared with the HDDE and CHS which were proposed recently. It provides the better known solutions for the makespan criterion to flow shop scheduling problem with limited buffers for the Car benchmark by Carlier and Rec benchmark by Reeves. The convergence curves show that the algorithm not only has faster convergence speed but also has better convergence value.

关键词： discrete artificial bee colony algorithm flow shop scheduling problem with intermediate buffers destruction and construction tournament selection

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