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Boundary conditions for the bending of a piezoelectric beam

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Science China(Physics,Mechanics & Astronomy) 2008年第7期51卷 847-856页

作者： GAO Yang1, XU SiPeng2 & ZHAO BaoSheng3 1 College of Science, China Agricultural University, Beijing 100083, China 2 College of Engineering, Ocean University of China, Qingdao 266071, China 3 School of Mechanical Engineering, University of Science and Technology liaoning, Anshan 114044, China College of Science China Agricultural University Beijing China College of Engineering Ocean University of China Qingdao China School of Mechanical Engineering University of Science and Technology Liaoning Anshan China

For beam bending in transversely isotropic piezoelectric media, the reciprocal theorem and the general solution of piezoelasticity are applied in a novel way to obtain the appropriate stress and mixed boundary conditions accurate to all orders for the beam of general edge geometry and loadings. By generalizing the method developed by Gregory and Wan, a set of necessary conditions on the edge-data for the existence of a rapidly decaying solution is established. The prescribed edge-data of the beam must satisfy these conditions in order that they could generate a decaying state within the beam. When stress and mixed conditions are imposed on the beam edge, these decaying state conditions for the case of bending deformation of piezoelectric beam are derived explicitly. They are then used for the correct formulation of boundary conditions for the beam theory solution (or the interior solution). Besides, an analytical solution of elastic beam is formulated to verify validity of our boundary conditions. For the stress data, our boundary conditions coincide with those obtained in conventional forms of beam theories. More importantly, the appropriate boundary conditions with two sets of mixed edge-data are obtained for the first time.

关键词： boundary conditions beam bending piezoelectric media decaying states regular states

Mixed boundary conditions for piezoelectric plates

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Science China(Physics,Mechanics & Astronomy) 2009年第5期52卷 755-761页

作者： GAO Yang 1 ,XU SiPeng 2 &ZHAO BaoSheng 3 1College of Science,China Agricultural University,Beijing 100083,China 2College of Engineering,Ocean University of China,Qingdao 266071,China 3 School of Mechanical Engineering,University of Science and Technology of liaoning,Anshan 114044,China College of Science China Agricultural University Beijing China College of Engineering Ocean University of China Qingdao China School of Mechanical Engineering University of Science and Technology of Liaoning Anshan China

For plate bending and stretching problems in piezoelectric materials,the reciprocal theorem and the general solution of piezoelasticity are applied in a novel way to obtain the appropriate mixed boundary conditions accurate to all order.A decay analysis technique is used to establish necessary conditions that the prescribed data on the edge of the plate must satisfy in order that it should generate a decaying state within the *** the case of axisymmetric bending and stretching of a circular plate,these decaying state conditions are obtained explicitly for the first time when the mixed conditions are imposed on the plate *** are then used for the correct formulation of boundary conditions for the interior solution.

关键词： boundary conditions piezoelectric plates mixed data bending problems stretching problems

Analysis on the Reliability of Intelligent Model of Blasting

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Analysis on the Reliability of Intelligent Model of Blasting

The Seventh International Symposium on Rock Fragmentation by Blasting

作者： GUO Lianjun ZHANG Guojian TAN Yingxian(Anshan Institute of Iron and Steel Technology liaoning 114044 China)

＜正＞ This paper, by analyzing the opaque and indeterminacy of blasting objects and using the indeterminacy principle and fuzzy logical method, put forward one sets of method used for uncertainty knowledge description in engineering blast;an artificial fuzzy neural network model was constructed and tested. When indeterminacy occurred due to the insecure and disaccord of knowledge resources, the reliability could be assured by selecting maximum uniform sets. Furthermore, by merging certainty and uncertainty knowledge into fuzzy network, clear neural cells and fuzzy neural cells were set up separately. An artificial fuzzy neural network model was constructed;The model was analyzed by reliability theory, and the degree of belief was introduced;Finally, the model was tested by comparing the prediction results of the model with the real results of some ten times of practical blasting.

关键词： Intelligent blasting Uncertainty Reliability Maximum uniform sets

Application on Neural PID Control of MN-AGC in Continuous Hot Rolling

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Application on Neural PID Control of MN-AGC in Continuous Ho...

2010 Chinese Control and Decision Conference

作者： Boqun Li,Jiaren Guo,Zhiyong Zhao School of Electronic and Information Engineering University of Science and Technology liaoning,Anshan 114044

＜正＞It is always primary object to improve gauge control accuracy in hot strip *** based on conventional PID emerged when the controlled object is complex,nonlinear and ***-AGC based on single neuron PID controller is introduced for improving automatic gauge control accuracy and quality in continuous hot *** controller is applied in hydraulic AGC of *** practical application results have shown the effectiveness of this algorithm and control performance gets much better.

关键词： Continuous hot rolling Screw down MN-AGC Single neural PID control

Intelligent Decoupling for Flatness and Gauge Control System in Hot Strip Rolling

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Intelligent Decoupling for Flatness and Gauge Control System...

2010 Chinese Control and Decision Conference

作者： Boqun Li,Jiaren Guo,Chuanqing Zhu School of Electronic and Information Engineering,University of Science and Technology liaoning,Anshan 114044

＜正＞Hot strip rolling is a very complicated nonlinear process,and characterized by couple between automatic flatness control （AFC） and automatic gauge control（AGC）.By analyzing actual rolling process and considering real application,a kind of intelligent decoupling algorithm based on single neuron PID is *** simulation results have shown this kind of controller has good performances of adaptively tracking target and resisting disturbances and superior to the conventional decoupled PID control in improving hot strip flatness and gauge accuracy.

关键词： AGC AFC Single Neuron Intelligent Decoupling

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大系统平衡块对角优分解

系统仿真学报 2002年第10期14卷 1402-1404页

作者：赵明陈雪波鞍山科技大学辽宁鞍山114044

为了实现大系统的并行处理,大系统的分解总是希望分配给各处理器的任务量是均衡的,即分解后的子系统要有平衡的结构(或维数尽量接近)。因此,在系统平衡块三角分解的基础上,利用非平衡补偿方法使系统状态方程的系数矩阵具有块对角优型,... 详细信息

为了实现大系统的并行处理,大系统的分解总是希望分配给各处理器的任务量是均衡的,即分解后的子系统要有平衡的结构(或维数尽量接近)。因此,在系统平衡块三角分解的基础上,利用非平衡补偿方法使系统状态方程的系数矩阵具有块对角优型,使系统模型简化的结果更为理想。系统平衡块对角优分解方法通过实例仿真证明是可行的,并为大系统分散控制的分析与设计提供了新的系统模型简化的手段。

关键词：大系统块三角分解平衡块三角分解非平衡补偿块对角优

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交通警察执法中面临的问题及解决途径

吉林公安高等专科学校学报 2006年第5期21卷 65-67页

作者：张立艳辽宁警官高等专科学校鞍山分校辽宁鞍山114044

交通警察执法中面临着许多问题,既有外部执法因素,又有内部执法原因。分析交通警察执法工作的现状,从多方面提出解决执法中面临问题的途径,使交通警察执法工作进一步规范化和制度化。

关键词：交通警察执法问题解决途径

The exact theory of plane problems for piezoelectric media

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The exact theory of plane problems for piezoelectric media

2011年全国压电和声波理论及器件应用研讨会

作者： Yang GAO~(1,*) Bao-Sheng ZHAO~2 1 College of Science,China Agricultural University,P.O.Box 74,Beijing 100083 2 School of Mechanical Engineering,University of Science and Technology liaoning,Anshan 114044

＜正＞Without employing ad hoc assumptions,various equations and solutions for plane problems of piezoelectric media are deduced systematically.A method for the exact solution of three-dimensional equations is present... 详细信息

关键词： plane problems plate theory piezoelectric the exact theory

Application of Particle Swarm Optimization to Pattern Identification

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Application of Particle Swarm Optimization to Pattern Identi...

第二十四届中国控制会议

作者： Zhang Ying~(1,2) Chen Xuebo~2, Wu Qinghong~2, Wang Wei~1 (1.School of Electronic and Information Engineering, Dalian University of Technology, Dalian 116024, China) (2. School of Electronic and Information Engineering, Anshan University of Science and Technology, liaoning, 114044, China)

＜正＞ A new algorithm for supervised pattern identification based on Particle Swarm Optimization （PSO） is proposed in this paper. At first, an image database with training image samples is set up. Secondly, image samples to be identified and stored in the database are preprocessed. Then, point matching is made between the identified images after preprocesing with the training images after preprocesing by using PSO, respectively. Finally, the identification is realized by seeking the minimum of a defined classification function. This algorithm is approved to be effective, accurate and simple by the experiments.

关键词： pattern identification PSO binarization thinning