检索结果-内蒙古大学图书馆

第26届中国过程控制会议（CPCC2015）

作者： Dengfeng Liu Hong-Tao Zhang Chi-Chung Lin Baoguo Xu Key Laboratory of Industrial Advanced Process Control for Light Industry of Ministry of Education Jiangnan University School of Internet of Things Engineering Jiangnan University Key Laboratory of Industrial Biotechnology of Ministry of Education Jiangnan University

Chinese rice wine making is a typical simultaneous saccharification and fermentation(SSF)*** the fermentation process,temperature is the key parameter which decides the quality of Chinese rice *** optimize the SSF process for Chinese rice wine brewing,the effects of temperature on the kinetic parameters of yeast growth and ethanol production at various temperatures were determined in batch cultures using a mathematical *** kinetic parameters as a function of temperature were evaluated using the software *** these functions with the mathematical model,an appropriate form of the model equations for the SSF considering the effects of temperature were *** kinetic parameters were found to fit the experimental data satisfactorily with the developed temperature dependent model and the temperature profile for maximizing the ethanol production for rice wine *** optimum temperature profile began at a low temperature of 26°C up to 30 h,the operating temperature increased rapidly to 31.9°C,and then decreased slowly to 18°C at 65 ***,the temperature was maintained at 18°C until the end of fermentation.A maximum ethanol production of 89.3 g/L was ***,our model would facilitate the improvement of Chinese rice wine production at the industrial scale.

关键词： Chinese rice wine Temperature controlling Simultaneous saccharification and fermentation Optimal temperature profile

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An improved Bayesian-based wavelet package denoising method for data reconciliation to coking chemical process

Communications in Computer and Information Science

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Communications in Computer and Information Science 2014年 461卷 137-149页

作者： Wu, Shengxi Ye, Qiang Shen, Kai Gu, Xingsheng Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai200237 China

Measurement data usually do not reflect actual chemical processes correctly because of inevitable errors in measurement, which is known as unbalance of measurement data. Data reconciliation and gross error detection are methods of processing measuring instruments that are inconsistent with mass and energy balances. At present, research on data reconciliation mainly focuses on the steady state model of the linear system. However, data reconciliation cannot be implemented in cases of sudden changes in production conditions, operations or instability, or discontinuous data acquisition. An improved Bayesian based on wavelet package denoising for data reconciliation is proposed. After a measurement signal is decomposed into a certain level, the optimal tree is selected with Bayesian classification. Bayesian classification was used to select the node of the optimal tree that would accelerate the calculation speed. The simulation and the coking chemical application show that the improved denoising method contributes to the effectiveness and efficiency of data reconciliation. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Forestry

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A fast colorization algorithm for infrared video

Communications in Computer and Information Science

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Communications in Computer and Information Science 2014年 462卷 282-292页

作者： He, Mengchi Gu, Xiaojing Gu, Xingsheng Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai200237 China

ISBN: (纸本)9783662452608

Color night-vision technology increases the representation ability of monochrome night-vision imagery by adding color to it, making observers’ understanding easier. Usually the color night-vision methods require the infrared and the low-light-level images at the same time, which hinders their application in the environment where totally without light or covered by heavy rain and thick fogs. To expand the application area of color night-vision technology, we propose a quickly colorization method based only on single band infrared video, which can provide all weather condition working. This method only requires a few pixels to be manually set with chrome values, and then the entire frame as well as the following frame sequence is automatically colorized. Experiments show that the colorization results are satisfactory and the algorithm is running fast. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Vision

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A high-order sliding mode stator flux observer for asynchronous motor based on feedback linearization

A high-order sliding mode stator flux observer for asynchron...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： Yuedou Pan Tao Chen School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing China Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) Beijing China

ISBN: (纸本)9781467376839

This paper proposes a high-order sliding mode stator flux estimation method for asynchronous motor based on feedback linearization. Selecting the rotor flux as the system's output, the coordinate change matrix and the nonlinear state feedback are derived based on the affine nonlinear model of asynchronous motors by using the nonlinear system's differential geometry theory. Then the asynchronous motor system is input-output linearized and the feedback linearization model of asynchronous motors is obtained. On this basis, a high-order sliding mode rotor flux observer for asynchronous motor is designed to estimate rotor flux, and this paper analysis the stability of the designed observer, then we can calculate stator flux by using the rotor flux. The designed observer is applied to Direct Torque control (DTC) of the asynchronous motor and achieves a good control performance. Simulation results verify the effectiveness and feasibility of the proposed method.

关键词： Stators Observers Rotors DC motors Nonlinear systems State feedback

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Data filtering based parameter estimation algorithms for multivariable Box-Jenkins-like systems ∗

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IFAC-PapersOnLine 2015年第8期48卷 849-852页

作者： Yanjiao Wang Ling Xu Feng Ding Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Jiangnan University Wuxi 214122 PR China School of Internet of Things Technology Wuxi Institute of Commerce Wuxi 214153 PR China

This paper proposes an auxiliary model based hierarchical least squares algorithm for multivariable Box-Jenkins-like systems using the hierarchical identification principle. To improve the computational efficiency, a multivariable system is decomposed into two subsystems by using the data filtering technique. Furthermore, this paper presents a data filtering based auxiliary model hierarchical least squares algorithm for multivariable Box-Jenkins-like systems. The simulation example shows that the proposed identification algorithms are effective.

关键词： Least squares Data filtering Parameter estimation Hierarchical identification Multivariable system

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Notice of Removal: Active disturbance rejection control for nonlinear two-tank liquid level cascade systems with model uncertainties

Notice of Removal: Active disturbance rejection control for ...

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SICE Annual Conference

作者： Lijun Wang Fen Zhang Qing Li Yixin Yin Qing Zheng Yumeng Zhang Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) University of Science and Technology Beijing Beijing China Department of Electrical and Computer Engineering Gannon University Pennsylvania USA

Due to the nonlinearities, model uncertainties and disturbances of the two-tank liquid level cascade system, active disturbance rejection controller (ADRC) solution was developed. First, a nonlinear mechanism model and its linearized model were built based on the theories of fluid dynamics for the system. Second, first-order linear ADRCs for the outer loop of the two cascade systems with an unknown order were designed, respectively. With a simple integrator as the normalized type of the feedback system, other parts of dynamic system which are different from the normalized type are treated as the total disturbances. The disturbances were estimated by the second-order linear extended state observer and compensated in the control law. Then the system, with nonlinearities, uncertainties and disturbances, is reduced to only a linear integrator. In comparison with the traditional PI controller, simulation results show that both the proposed ADRCs have better robustness and adaptability against model uncertainties.

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Stable Distributed Model Predictive control Strategy Based on Agent Coordination 33

Stable Distributed Model Predictive Control Strategy Based o...

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第三十三届中国控制会议

作者： WANG Mengling SHI Hongbo Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology

ISBN: (纸本)9781479947249

Many systems composed by several interacting subsystems are usually controlled by a distributed control framework. Distributed Model Predictive control(DMPC) strategy, in which each subsystem is controlled by a local MPC controller, has advantages of accommodating constraints, less computational cost and high flexibility. In order to improve the global performance and guarantee the system stability, a stabilized DMPC strategy is proposed in this paper, in which subsystems interact through inputs. At first, local initial feasible solutions are achieved based on a Minkowski functional to guarantee the local closed-loop system stabilization. And then the global optimal solutions are obtained through coordination strategy for the sake of reducing iteration time and accelerating the convergence speed efficiently. Finally, the accuracy and efficiency of the proposed scheme is put to test through simulation.

关键词： Distributed model predictive control,agent coordination,Stability

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Partition mutation PSO for welding robot path optimization

Advances in Intelligent Systems and Computing

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Advances in Intelligent Systems and Computing 2015年 363卷 77-86页

作者： Wang, Xue-Wu Shi, Ying-Pan Gu, Xing-Sheng Ding, Dong-Yan Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Shanghai200237 China Institute of Microelectronic Materials and Technology School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai200240 China

Many solder joints usually have to be traversed for spot welding robots, and reasonable welding sequence will improve welding efficiency. Intelligent optimization algorithms have been used to study path optimization problems in these years because of their effective optimization abilities. Due to its simplicity, high search accuracy and fast convergence rate, the particle swarm optimization (PSO) algorithm was used to study welding robot path planning. A novel hybrid discrete PSO algorithm was proposed to improve the basic PSO after the partition operation, mutation strategy were combined. Then, the optimization performance of the algorithm was used to solve 3-dimensional welding path planning problem. © Springer International Publishing Switzerland 2015.

关键词： Spot welding

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Approximation algorithms for two-stage supply chain scheduling of production and distribution

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International Journal of Systems Science: Operations and Logistics 2015年第2期2卷 78-89页

作者： Cheng, Bayi Li, Kai Hu, Xiaoxuan School of Management Hefei University of Technology Hefei China Key Laboratory of Process Optimization and Intelligent Decision-making Ministry of Education Hefei China

In this paper, we investigate a class of two-stage optimisation problems for manufacturers in supply chains. The objective is to optimise production and outbound distribution. In the production part, the manufacturer has identical batch-processing machines with limited capacity in size. The processing times and sizes of jobs are determined by the customer. As long as the total size of jobs in a batch does not exceed the machine capacity, the batch can be processed on any machine. The processing of a batch cannot be interrupted until all the jobs in the batch have been completed. In the distribution part, the manufacturer assigns the completed jobs in groups and delivers them to the customer with its own vehicles. We propose the model of minimising service span, which lasts from the processing of the first job to the delivery of the last job. We investigate two types of machine configuration, including single machine and parallel machines. In the vehicle configuration, we consider two cases including infinite vehicles and a fixed number of vehicles. We show all the problems under investigation are NP-hard. For each problem, we design an effective polynomial time algorithm. We analyse the time complexity and show the performance guarantees of the algorithms. © 2014, © 2014 Taylor & Francis.

关键词： approximation algorithm arbitrary-size jobs batch-processing machines supply chain scheduling

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A hybrid discrete harmony search algorithm for flow shop scheduling with limited buffers 3

A hybrid discrete harmony search algorithm for flow shop sch...

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3rd International Workshop on advanced Computational Intelligence and Intelligent Informatics, IWACIII 2013

作者： Cui, Zhe Gu, Xing-Sheng Key Laboratory of Advanced Control and Optimization for Chemical Process Ministry of Education East China University of Science and Technology Shanghai200237 China

The flow shop scheduling problem with limited buffers is widely existing in manufacturing systems. This article proposes a hybrid discrete harmony search algorithm for the problem to minimize total flow time. The algorithm presents a novel discrete improvisation and a differential evolution scheme with the job-permutation-based representation. Moreover, the discrete harmony search is hybridized with the problem-dependent local search based on insert neighborhood to balance the global exploration and local exploitation. In addition, an orthogonal experiment design is employed to provide a receipt for turning the adjustable parameters of the algorithm. Comparisons based on the Taillard benchmarks indicate the superiority of the proposed algorithm in terms of effectiveness and efficiency.

关键词： Manufacture

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