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19th International Conference on Machine Learning and Cybernetics, ICMLC 2020

作者： Xu, Jing Sun, Qing East China University of Science and Technology Ministry of Education The Key Laboratory of Advanced Control and Optimization for Chemical Process Shanghai200237 China Shanghai University Shanghai Key Laboratory of Power Station Automation Technology School of Mechatronical Engineering and Automation Shanghai200072 China

ISBN: (纸本)9780738124261

This paper is dealt with the rotor speed tracking problem of variable-speed wind turbine systems operating under the partial load condition. Singular perturbation techniques are used to characterize the two-time-scale property of the wind turbine system, and a linear parameter varying (LPV) model is formed to approximate nonlinear behaviours of a wind turbine system. Based on the slow-fast decomposition method, slow and fast subsystems are constructed: one for the mechanical dynamics and the other for the electrical dynamics. Slow and fast controls are derived, respectively, and then a local state feedback controller, sum of the slow and fast control, is formulated. A design procedure, using the linear parameter varying control to combine local controllers, is proposed to guarantee the robustness of the closed-loop nonlinear wind turbine system. Numerical examples are given to show the validity of the proposed control scheme. © 2020 IEEE.

关键词： Wind turbines

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An improved discrete artificial bee colony algorithm for hybrid flow shop problems

Communications in Computer and Information Science

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Communications in Computer and Information Science 2013年 355卷 294-302页

作者： Cui, Zhe Gu, Xingsheng Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai 200237 China

Being a typical NP-hard combinatorial optimization problem, the hybrid flow shop (HFS) problem widely exists in manufacturing systems. In this paper, we firstly establish the model of the HFS problem by employing the vector representation. Then an improved discrete artificial bee colony (IDABC) algorithm is proposed for this problem to minimize the makespan. In the IDABC algorithm, a novel differential evolution and a modified variable neighborhood search are studied to generating new solutions for the employed and onlooker bees. The destruction and construction procedures are utilized to obtain solutions for the scout bees. The simulation results clearly imply that the proposed IDABC algorithm is highly effective and efficient as compared to six state-of-the-art algorithms on the same benchmark instances. © Springer-Verlag Berlin Heidelberg 2013.

关键词： Manufacture

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Delay-dependent output feedback integral sliding mode control of singularly perturbed systems

Delay-dependent output feedback integral sliding mode contro...

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International Conference on control and Automation (ICCA)

作者： Jing Xu Yugang Niu Key Laboratory of Advanced Control and Optimization for Chemical Process East China University of Science and Technology Shanghai China

ISBN: (数字)9781728190938

ISBN: (纸本)9781728190945

This paper presents a descriptor system method for output feedback integral sliding mode control of singularly perturbed systems. The fast state, representing the derivative of output, is approximated with aid of an artificial time-delay estimator. Then, a delay-dependent integral sliding mode controller is designed to ensure the occurrence of sliding phase since the initial time instant. The finite frequency uncertainty is divided into the matched and uncertainty uncertainty. On this basis, the proposed controller contains the nominal part to attain the robustness to the unmatched uncertainty, and the switching part to compensate the matched uncertainty. Finally, the effectiveness of the design method is verified in a mass-damper-spring system subject to finite frequency perturbations.

关键词： Uncertainty Output feedback Perturbation methods Sliding mode control Linear matrix inequalities Delay effects Matrix decomposition

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Sliding Mode control for Uncertain Switched Systems with State and Input Delay

Sliding Mode Control for Uncertain Switched Systems with Sta...

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第三十二届中国控制会议

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

ISBN: (纸本)9781479900305

This paper considers sliding mode control for a class of uncertain switched systems with state and input *** employing a weighted sum of the input matrix,a common sliding surface is designed and the corresponding sliding mode dynamics is *** guarantee the asymptotic stability of the sliding motion,a switching signal based on the min-projection strategy is ***,it is shown that the state trajectories can be driven onto the specified sliding surface despite the presence of state and input delay and external ***,a numerical example is given to demonstrate the effectiveness of the proposed method.

关键词： switched systems sliding mode control input delay multiple Lyapunov functions

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Data-Driven controller Synthesis for Parameters Unknown Linear-delay Systems with Input Constraint

Data-Driven Controller Synthesis for Parameters Unknown Line...

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第33届中国控制与决策会议

作者： Jinggao Sun Guanghao Su Xianfeng Chen Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of EducationEast China University of Science and Technology

In practical control engineering,delay and actuator saturation are main challenges which may lead to system performance degradation,or even controlled variables *** of Smith predictor and model recovery anti windup method is an effective solution to linear delay system anti-windup synthesis,however model dependent property of the above two methods brings obstacles for the application and *** overcome such a difficulty,a data-driven approach is proposed in this paper,operating data is collected and utilized to simultaneously tune feedback controller parameters and estimate internal model applied in Smith ***,anti-windup compensator is constructed with the estimated model and a compensator gain optimization structure is proposed based on Lyapunov ***,simulations have been implemented to three typical processes in chemical engineering,and detailed performance comparison is provided to illustrate the effectiveness of the proposed method.

关键词： anti-windup data-driven control smith predictor unknown linear delay system

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Cross-domain migration design of Yi lacquerware patterns on leather bags based on digital technology

Cross-domain migration design of Yi lacquerware patterns on ...

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2022 International Conference on advanced Manufacturing Technology and Manufacturing Systems, ICAMTMS 2022

作者： Xu, Han Zhang, Yudian Lu, Zhengyang Chen, Han School of design Jiangnan University Wuxi214122 China School of fashion design and engineering Zhejiang Sci-Tech University Hangzhou310018 China Key Laboratory of Advanced Process Control for Light Industry Jiangnan University Wuxi214122 China

ISBN: (纸本)9781510656840

The Yi lacquerware pattern is abundant in content and exquisite in design. It has extremely strong regional characteristics and value connotations. Through field investigation, literature research and physical research, this study analyzes and extracts the pattern theme, morphological structure and typical color of Yi lacquerware from the perspective of design. We use morphological displacement method to redesign the extracted basic pattern and combine the arrangement rules to create a derivative pattern. We apply the derivative pattern to a modern women’s leather bag design, modeling production and simulation presentation through 3D digital software. Finally, we evaluate the design results through eye-movement experiments. The results show that the design method proposed in this research can produce leather bag products with ethnic characteristics while meeting the aesthetic perception of modern women. The cross-domain migration of Yi lacquerware patterns on leather bags can bring new artistic connotations and cultural meanings to contemporary leather products. © 2022 SPIE.

关键词： Leather

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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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Modeling growth of microalgae Dunaliella salina under different nutritional conditions

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American Journal of Biochemistry and Biotechnology 2010年第4期6卷 279-283页

作者： Jesus, Sergio Santos Filho, Rubens Maciel Department of Chemical Process Laboratory of Optimization Design and Advanced Control School of Chemical Engineering University of Campinas Unicamp Cidade Universitária Zeferino Vaz CP 6066 Campinas SP Brazil

Problem statement: The aim of this study was to find the empirical model that describes the growth kinetics of Dunaliella salina, with low production cost and to estimate parameters of this model. Approach: In this study the strain of D. salina UTEX 200 was cultivated in seawater (0.5 M NaCl) at room temperature with agitation of 150 rpm and luminous intensity of 60 mmols.m-2.s-1. The synthetic medium AS100 (0.2 M NaCl) was used in this study for comparison purposes and in order to determine the optimal growth of the microalgae. Kinetics of growth and β-carotene production was determined in a period of 15 days. Results: After the analysis of the behavior graphic, an unstructured model was used for describing the cell growth (logistic model). It was observed that the model was well adjusted to experimental data for the two conditions of analysis. It was observed that alga produces carotenoids under conditions of stress, in which the cell division are retarded. In the case of cells grown in seawater (higher salt concentration), the cell growth was lower but the concentration of β-carotene was higher. Conclusion: In general, these results suggest that D. salina presents higher potential for β-carotene accumulation and that high salinity decreases cellular concentration (measured by the parameter Xm of the kinetic model proposed);however there is an increase in β-carotene production. © 2010 Science Publications.

关键词： Microalgae

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Congestion control for Wireless Sensor Networks: A survey

Congestion Control for Wireless Sensor Networks: A survey

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第26届中国控制与决策会议

作者： Hu Yuan NiuYugang Gan Fenghao Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education (East China University of Science and Technology)

ISBN: (纸本)9781479937097

Due to the characteristics of source limited, multi-to-one paths and burst data flow, congestion inevitable happens in wireless sensor networks(WSNs). The control mechanism of congestion for WSNs is of high significant and plays a key role in achieving high QoS of the network. In this paper, many existing congestion control mechanisms have been summarized and compared, some interesting topics have been provided.

关键词： Wireless Sensor Networks Congestion control mechanism Data Transmission

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Prescribed-time distributed localization of multi-agent systems based on local bearing information

Prescribed-time distributed localization of multi-agent syst...

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第43届中国控制会议

作者： Yunkai Lv Huaicheng Yan Kai Rao Penghui Yang Key Laboratory of Advanced Control and Optimization for Chemical Process of Ministry of Education East China University of Science and Technology

ISBN: (数字)9789887581581

ISBN: (纸本)9798350366907

This work considers the localizability of multi-agent systems based on local bearing measurement.A novel prescribedtime orientation estimation algorithm is first proposed to guarantee that the local reference frame of the follower agent is aligned with the global *** orientation estimation algorithm is then applied to the problem of position estimation,and a prescribedtime distributed localization estimation algorithm is *** global convergence is derived based on the cascade *** simulation results are provided to prove the effectiveness of the proposed estimation methods.

关键词： Local bearing information orientation estimation prescribed-time

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