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NONLINEAR DATA RECONCILIATION METHOD BASED ON KERNEL PRINCIPAL COMPONENT ANALYSIS

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Chinese Journal of Mechanical Engineering 2003年第2期16卷 117-119页

作者： yan Weiwu Shao Huihedepartment of Automation,shanghai jiaotong university,shanghai 200030, china department of Automation Shanghai Jiaotong University Shanghai 200030 China

In the industrial process situation, principal component analysis (PCA) is ageneral method in data reconciliation. However, PCA sometime is unfeasible to nonlinear featureanalysis and limited in application to nonlinear industrial process. Kernel PCA (KPCA) is extensionof PCA and can be used for nonlinear feature analysis. A nonlinear data reconciliation method basedon KPCA is proposed. The basic idea of this method is that firstly original data are mapped to highdimensional feature space by nonlinear function, and PCA is implemented in the feature space. Thennonlinear feature analysis is implemented and data are reconstructed by using the kernel. The datareconciliation method based on KPCA is applied to ternary distillation column. Simulation resultsshow that this method can filter the noise in measurements of nonlinear process and reconciliateddata can represent the true information of nonlinear process.

关键词： principal component analysis kernel data reconciliation nonlinear

NONLINEAR MODELING AND CONTROLLING OF ARTIFICIAL MUSCLE SYSTEM USING NEURAL NETWORKS

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Chinese Journal of Mechanical Engineering 2004年第2期17卷 306-310页

作者： Tian Sheping Ding Guoqing yan Detian Lin Liangming department of Information Measurement and Instrumentation,shanghai jiaotong university,shanghai 200030, china department of Information Measurement and Instrumentation Shanghai Jiaotong University 上海 200030

The pneumatic artificial muscles are widely used in the fields of medicalrobots, etc. Neural networks are applied to modeling and controlling of artificial muscle system. Asingle-joint artificial muscle test system is designed. The recursive prediction error (RPE)algorithm which yields faster convergence than back propagation (BP) algorithm is applied to trainthe neural networks. The realization of RPE algorithm is given. The difference of modeling ofartificial muscles using neural networks with different input nodes and different hidden layer nodesis discussed. On this basis the nonlinear control scheme using neural networks for artificialmuscle system has been introduced. The experimental results show that the nonlinear control schemeyields faster response and higher control accuracy than the traditional linear control scheme.

关键词： Artificial muscle Neural networks Recursive prediction error algorithm Nonlinear modeling and controlling

SOLUBLE POLYACETYLENE OBTAINED WITH RARE-EARTH CATALYST AND SOME ASPECTS OF POLYMERIZATION MECHANISM

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Chinese Journal of Polymer Science 1987年第3期5卷 221-227页

作者：胡孝东王佛松赵晓江颜德岳 department of applied chemistry shanghai jiaotong university Changchun Institute of applied chemistry Academia Sinica Changchum

Soluble polyacetylene （PA） with well--defined nature has been synthesized with catalyst system Nd（i-OPr）3/AIR3 （R=C2H5-, i-C4H9-） and characterized by IR, Raman and ESR Spectra etc. Number average molecular weight of the soluble specimen were determined by VPO to be about 500g/mol. or lower. The IR and NMR spectra and end group analysis of' the soluble polyacetylene fully demonstrate that polymerization of acetylene with rare-earth catalyst is realized through monomer insertion between the transition metal-carbon bond.

关键词： Soluble polyacetylene Rare Earth Catalyst

A NEW NUMERICAL METHOD FOR GROUNDWATER FIOW AND SOLUTE TRANSPORT USING VELOCITY FIELD

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Journal of Hydrodynamics 2008年第3期20卷 356-364页

作者： ZHANG Qian-fei LAN Shou-qi WANG yan-ming XU Yong-fu School of Naval Architecture Ocean and Civil Engineering Shanghai Jiaotong University Shanghai 200030China shanghai Municipal Engineering Design Institute Shanghai 200092 China department of Geotechnical Engineering Tongji University Shanghai 200092 China

A new numerical method for groundwater flow analysis was introduced to estimate simultaneously velocity vectors and water pressure head. The method could be employed to handle the vertical flow under variably saturated conditions and for horizontal flow as well. The method allows for better estimation of velocities at the element nodes which can be used as direct input to transport models. The advection-dispersion process was treated by the Eulerian-Lagrangian approach with particle tracking technique using the velocities at FEM nodes. The method was verified with the classical one dimensional model and applied to simulate contaminant transport process through a slurry wall as a barrier to prevent leachate pollution from a sanitary landfill.

关键词： groundwater flow solute transport velocity vectors finite element method Eulerian-Lagrangian approach particletracking technique

WEIGHT AVERAGE MOLECULAR WEIGHT OF BLOCK COPOLYMER AND CALLOT INEQUALITY

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Chinese Science Bulletin 1986年第24期31卷 1684-1688页

作者：颜德岳袁萃明 department of applied chemistry Shanghai Jiaotong University

Although there is already an expression for the weight average molecular weight of block copolymers, the term defined by Rempp and Benoit in the expression is still ambiguous, It is impossible to calculate numerically the weight average molecular weight for a block copolymer with this expression; besides, the important inequality named after

关键词： copolymer inequality weights initiator numerically polymerization impossible blocks monomer initiated

计及分布式电源的配电网潮流和断线故障分析算法

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上海交通大学学报 2008年第12期42卷 2028-2032,2036页

作者：刘波张焰杨娜上海交通大学电气工程系上海200240

介绍了分布式电源(DG)与配电网互联的两种常用接口方式,对异步发电机和太阳能电池两种典型DG的运行方式和控制特性进行了研究.建立了各自在潮流计算中所需的数学模型,提出了计及两种DG的交直流混合迭代潮流计算方法,并在此基础上通过考... 详细信息

介绍了分布式电源(DG)与配电网互联的两种常用接口方式,对异步发电机和太阳能电池两种典型DG的运行方式和控制特性进行了研究.建立了各自在潮流计算中所需的数学模型,提出了计及两种DG的交直流混合迭代潮流计算方法,并在此基础上通过考虑配电网特性对灵敏度分析法进行简化,使得该方法能够快速求解断线故障模式下的系统状态,也适合于计及不同DG形式的多电源配电网系统.通过对Kumamoto 15节点配电网系统进行测试,验证了所提出的潮流计算方法以及故障算法的有效性和合理性,为进一步研究DG对电网的影响奠定了基础.

关键词：分布式电源潮流计算灵敏度配电网故障分析

Control System for Low Pressure Gradient Mixer in High Performance Liquid Chromatograph

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Journal of shanghai jiaotong university(Science) 2010年第1期15卷 54-57页

作者：赵瑛王珺艳任秋实柴新禹 department of Biomedical Engineering Shanghai Jiaotong University

A control system used in high performance liquid chromatograph(HPLC) was *** control system adopting low pressure gradient elution was tested with different initial and end volume fractions,and four types of gradient elution *** experimental results verified the theoretical analyses of the applied *** self-designed control system can achieve approving accuracy,repeatability and low cost,which has a bright outlook for domestic applications.

关键词： low pressure gradient high performance liquid chromatograph (HPLC) mixer

Fast Affine Projection Algorithm for Adaptive Noise Canceling and Its Application on the Fetal Electrocardiogram Extraction

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Journal of shanghai jiaotong university(Science) 2009年第6期14卷 690-694页

作者：宫延伟吉小军黄峰一阮晓虹 department of Instruments Science and Engineering Shanghai Jiaotong University

Aimed at the problem of adaptive noise canceling(ANC),three implementary algorithms which are least mean square(LMS) algorithm,recursive least square(RLS) algorithm and fast affine projection(FAP) algorithm,have been *** simulations were made for the performance of these *** extraction of fetal electrocardiogram(FECG) is applied to compare the application effect of the above *** proposed FAP algorithm has obvious advantages in computational complexity,convergence speed and steadystate error.

关键词： adaptive noise canceling (ANC) least mean square (LMS) algorithm recursive least square (RLS) algorithm fast affine projection (FAP) algorithm fetal electrocardiogram (FECG)

漂浮基空间机械臂关节空间轨迹的鲁棒自适应跟踪控制

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力学季刊 2001年第2期22卷 198-203页

作者：陈力刘延柱福州大学机械工程系福州350002 上海交通大学工程力学系上海200030

本文讨论了具有不确定系统参数的漂浮基空间机械臂系统的控制问题。由于载体的位置与姿态均不受控制,空间机械臂系统的控制方程失去了关于系统惯性参数的线性性质,给控制系统设计带来极大的困难。基于增广变量的思想,我们克服了上述难点... 详细信息

本文讨论了具有不确定系统参数的漂浮基空间机械臂系统的控制问题。由于载体的位置与姿态均不受控制,空间机械臂系统的控制方程失去了关于系统惯性参数的线性性质,给控制系统设计带来极大的困难。基于增广变量的思想,我们克服了上述难点,保持了控制方程关于系统惯性参数的线性关系;在此基础上,针对系统中机械臂参数不确定、载荷参数未知的情况,提出了关节空间轨迹追踪的鲁棒自适应控制方案,并应用Lya-punov直接方法对上述控制方案的渐近稳定性条件作了证明。提出的控制方案适用于空间站舱内机械手控制系统设计。仿真运算证实了该方法的有效性。

关键词：漂浮基空间机械臂多刚体系统动力学增广变量法鲁棒自适应控制