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Fuzzy Identification of Non-uniformly Sampled Data Nonlinear Systems Based on Clustering Method

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Fuzzy Identification of Non-uniformly Sampled Data Nonlinear...

第37届中国控制会议

作者： Hongwei Wang xia hao Jie Lian School of electrical engineering Xinjiang University School of Control Science and Engineering Dalian University of Technology

This paper is motivated by the practical control considerations that non-uniformly sampled nonlinear systems are abundant in industrial *** corresponding input-output relationship of non-uniformly sampled nonlinear systems is obtained by using the weighted combination of the multiple local lifted linear models acquired from non-uniformly sampled ***,fuzzy model is derived by constructing the fuzzy membership degree functions as the weighted combination *** this basis,we propose a fuzzy identification algorithm using GK fuzzy clustering and recursive least squared ***,the simulation example is studied to demonstrate the effectiveness of the proposed method..

关键词： fuzzy identification multi-rates non-uniformly sampling nonlinear systems

Continuous crystallization process control with deep Galerkin method

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Continuous crystallization process control with deep Galerki...

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作者： hao xia Weijie Wang Yan Pang School of Control Science and Engineering Dalian University of Technology School of School of Aeronautics and Astronautics Dalian University of Technology

The aim of the continuous crystallization process control is to produce final product with desirable crystal size distribution（CSD）.The evolution of CSD during the process can be obtained by solving the so-called population balance equation（PBE） which governs the dynamic behavior of crystallization *** a model,PBE is essentially a nonlinear partial integro-differential *** numerical solution of such PBE is a remarkably *** the advances of deep learning,a new type of neural networks called physics informed neural network（PINN）,are trained for supervised learning tasks while respecting physics described by general nonlinear partial differential equations has been *** this paper,we use a specific PINN called deep Galerkin method（DGM） to train the neural networks to approximate the solution of the PBE for continuous crystallization *** the PBE solved by the DGM,we are able to optimize the temperature profile of the process to produce products matching the desired *** experiments are used to prove the feasibility of the proposed method.

关键词： Continuous crystallization Population balance equation Deep Galerking method

Intramammary expression and therapeutic effect of a human lysozyme-expressing vector for treating bovine mastitis

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2006年第4期7卷 324-330页

作者： SUN Huai-chang XUE Fang-ming QIAN Ke FANG hao-xia QIU Hua-lei ZHANG Xin-yu YIN Zhao-hua School of Veterinary Medicine Yangzhou University Yangzhou 225009 China

To develop a gene therapy strategy for treating bovine mastitis, a new mammary-specific vector containing human lysozyme (hLYZ) cDNA and kanamycin resistance gene was constructed for intramammary expression and clinical studies. After one time acupuncture or intracisternal infusion of healthy cows with 400 μg of the p215C3LYZ vector, over 2.0 μg/ml of rhLYZ could be detected by enzymatic assay for about 3 weeks in the milk samples. Western blotting showed that rhLYZ secreted into milk samples from the vector-injected cows had molecular weight similar to that of the natural hLYZ in human colostrums. Twenty days after the primary injection, the quarters were re-injected with the same vector by quarter acupuncture and even higher concentrations of rhLYZ could be detected. Indirect competitive ELISA of milk samples showed that the vector injection did not induce detectable humoral immune response against hLYZ. Clinical studies showed that twice acupuncture of quarters with the p215C3LYZ vector had overt therapeutic effect on clinical and subclinical mastitis previously treated with antibiotics, including disappearance of clinical symptoms and relatively high microbiological cure rates. These data provide a solid rationale for using the vector to develop gene therapy for treating bovine mastitis.

关键词： Human lysozyme cDNA Mammary-specific vector Expression Mastitis Gene therapy

Robust Multi-Objective Optimization for Gas Turbine Operation Based on Kriging Surrogate Model

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Robust Multi-Objective Optimization for Gas Turbine Operatio...

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作者： hao xia Peilin Jia Liang Ma School of Control Science and Control Engineering Dalian University of Technology No.703 Research Institute of China State Shipbuilding Corporation Limited

This paper presents a systematic method for the optimal settings of gas turbine operation. After building the highfidelity model of the gas turbine, the fuel flow, variable inlet guide-vane（VIGV） of the high and low pressure compressors,ambient air pressure and temperature are selected as the decision variables, while the pollutant emissions and output power of whole system are chosen as response variables to be optimized. In order to guarantee the accurate response prediction,the performance of three different types of surrogate models, namely polynomial response surface（PRS）, Kriging and radial basis function（RBF） models are built with sampling points generated by Latin hypercube design（LHD） method. With Kriging surrogate model best fitting the data, it is chosen as the model for performance prediction during the optimization process. It is also shown that the NSGA-II algorithm is suitable for the multi-objective optimization of gas turbine. The robustness of the Pareto solutions are checked under the varying ambient pressure and temperature. By considering the solution robustness, and the nature of gas turbine performance change under perturbation, the optimal operating conditions are identified.

关键词： Gas turbine Kriging model Robust Multi-objective optimization

Modeling and Tracking Control of Tethered Kite Systems

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Modeling and Tracking Control of Tethered Kite Systems

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作者： Siqi Han Yan Pang hao xia State Key Laboratory of Structural Analysis for Industrial Equipment Dalian University of Technology School of Control Science and Engineering Dalian University of Technology

Tethered kites are emerging devices that can take the advantage of high altitude wind energy by controlling their flight paths. In this paper, the tracking control methods of tethered kite systems for both ship propulsion and power generation are presented. A simplified control model for a single kite system is derived to predigest calculation. With the objective of guiding the kite to follow a figure-of-eight trajectory, a simple control scheme based on velocity angle control is introduced for the ship propulsion system and a nonlinear model predictive controller is designed for a more complex kite generating system. Two control algorithms are proposed to implement the optimization process for 4-DOF model and 5-DOF model respectively. Numerical simulations are performed to test the control performance in Simulink.

关键词： Tethered kite systems tracking control dynamic modeling of kite systems NMPC cascade control

Dynamic Rod Worth Estimation with Extended Kalman Filter and Background Current Elimination

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Dynamic Rod Worth Estimation with Extended Kalman Filter and...

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作者： hao xia Junqi Yang Chao Bao Dalian University of Technology Science and Technology on Reactor System Design Technology Laboratory

The dynamical rod worth method(DRWM) is a fast and accurate method to measure and validate the worth of control rod during the zero power physics test at pressure water nuclear *** control rod worth is obtained from the reactivity change caused by the fast insertion of the control rod into the bottom of the *** reactivity is calculated based the measured ex-core detector signals which normally varies from～10 nA to～10 nA during the rod insertion *** the later stage of the test,as the detector signal becomes～10 nA,the impact of the measurement noise and the gamma-ray background current on the reactivity calculation becomes *** this paper,we developed an extended Kalman filter(EKF) with suitable weighing matrices to filter out the measurement *** most measurement noise filtered out,a background current estimation method is used to eliminate the effect of the background *** combining the background current estimation method with EKF filter,accurate control rod worth is obtained from the real test data.

关键词： Dynamic Rod Worth Method Reactivity Extended Kalman filter Background Current

An Assembly of Pyrano[3,2-b]indol-2-ones via NHC-Catalyzed[3+3]Annulation of Indolin-3-ones with Ynals

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Chinese Journal of Chemistry 2024年第13期42卷 1487-1492页

作者： xia Wang Shulei Zhang Shao-Jie Wang hao An xiaolan Xin haonan Lin Zhifeng Tu Shenci Lu Frontiers Science Center for Flexible Electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)&Shaanxi Instituteof Biomedical Materials and Engineering(SiBME)Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'anShaanxi 710072China School of Chemistry and Chemical Engineering Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'anShaanxi 710072China

We report herein an unprecedented N-heterocyclic carbene-catalyzed formal[3+3]annulation of ynals with N-Ts indolin-3-ones under the oxidation condition affording the functionalized pyrano[3,2-b]*** alkynyl acylazoliums via the combination of a carbene with ynals in the presence of oxidate proved to be the important intermediates for the success of this *** method features a broad substrate scope and mild conditions,including axially chiral skeletons with suitable substitutions.

关键词： N-Heterocyclic carbene Annulation Organocatalysis Atropisomerism Carbazole Aldehydes Heterocycles Asymmetric catalysis

Optimal alarm threshold under time-varying operating conditions

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Optimal alarm threshold under time-varying operating conditi...

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作者： hao xia Zengle Li Xiluo Yang College of Control Science and Engineering Dalian University of Technology

Alarm is an important method to detect the abnormal situations in modern industrial plants. Reducing the number of false alarms and missed alarms is significant for improving the performance of the alarm systems. In this paper, the optimal alarm threshold under time-varying operating condition has been studied. An alarm system model is introduced first, then the computational method of optimal alarm threshold without any data processing techniques is discussed. Moving average filter is then used to reduce the impact of measurement noise and its effect on the threshold design is further explained. An alarm design procedure based on these analysis is presented for the fast computation of alarm threshold. An example is provided to illustrate the effectiveness of the proposed method.

关键词： Alarm systems alarm threshold Moving average filter

基于LED光源DLP前照灯系统策略研究与验证

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内燃机与配件 2024年第16期 48-50页

作者：宋明明岳敏郝丽霞赵家威宋立彬徐杰明雷达新能源汽车(浙江)有限公司浙江杭州310051 上海中建申拓投资发展有限公司上海201800

本文以LED辅助光源的DLP前照灯系统为研究对象,开发一种应对多种场景需求的DLP前照灯系统策略及控制逻辑。采用整车及系统台架实测验证,试验结果表明,LED辅助光源的DLP前照灯系统能够很好实现人车防眩目,坡度及转弯、高速公路等工况自... 详细信息

本文以LED辅助光源的DLP前照灯系统为研究对象,开发一种应对多种场景需求的DLP前照灯系统策略及控制逻辑。采用整车及系统台架实测验证,试验结果表明,LED辅助光源的DLP前照灯系统能够很好实现人车防眩目,坡度及转弯、高速公路等工况自动照明,提高夜间行车驾驶安全。

关键词： DLP前照灯系统 LED辅助光源自动前照灯