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| 1 | Active vibration control of piezoelectric bonded smart structures using PID algorithm显示文摘Thin-walled structures are sensitive to vibrate under even very small disturbances. In order to design a suitable controller for vibration suppression of thin-walled smart structures, an electro-mechanically coupled finite element(FE) model of smart structures is developed based on first-order shear deformation(FOSD) hypothesis. Considering the vibrations generated by various disturbances, which include free and forced vibrations, a PID control is implemented to damp both the free and forced vibrations. Additionally, an LQR optimal control is applied for comparison.The implemented control strategies are validated by a piezoelectric layered smart plate under various excitations. | Zhang Shunqi Rdiger Schmidt Qin Xiansheng | 2015 | Chinese Journal of Aeronautics2015，28，1： | 8 |
| 2 | Sediment variability and transport in the littoral area of the abandoned Yellow River Delta, northern Jiangsu显示文摘放弃的黄河三角洲(AYRD ) 的三角洲进化和侵蚀过程广泛地被学习了。然而,在沿着江苏的北方海岸的大沿岸的规模的沉积的变化少些被理解。在这研究,在 2006 和 2012 在黄河三角洲的沿岸的区域获得的表面沉积样品的数据被用来由使用 geostatistics 分析工具和谷物尺寸趋势学习沉积可变性和沉积运输趋势分析模型。为了保证模型,的适用性, geostatistics 方法被用来决定典型距离(D < 潜水艇 class= “ a-plus-plus ” > 有谷物尺寸参数的平均范围价值(Ao ) 的 c ) 。过滤方法(搬迁数据不在一个采样车站) 被用来改进数据的精确性选择。结果在 Lianyun 港口区域和放弃的黄河三角洲的南部的部分显示出那沉积空间关联(作为) 在放弃的黄河三角洲的北部分比那好(一) 。在区域的沉积被发现是在东北东南方向的 anisotropy。谷物尺寸趋势分析表明沉积趋势向 bayhead 并且在 Haizhou 海湾南方,在东南沿着在南方 Lianyun 的海岸线移植,在西北在里面一 and 在东方在东南在里面作为分别地。在 D 之间的可能的关系的调查 < 潜水艇 class= “ a-plus-plus ” > c , Ao,沉积运输和三角洲进化显示出在 D 之间的一个靠近的连接 < 潜水艇 class= “ a-plus-plus ” > c 和一沉积联合的 Ao。沉积运输趋势能相当代表三角洲进化到某个度,这也被发现。 | ZHANG Lin CHEN Shenliang PAN Shunqi YI Liang JIANG Chao | 2014 | Journal of Geographical Sciences2014，24，4： | 4 |
| 3 | Research on the weak acoustic signal features based on magneto-acoustic effect显示文摘The electrical characteristics of tissue yield valuable information for the early diagnosis of pathological changes. Magneto-acoustic tomography( MAT) is a novel functional imaging approach for imaging electrical conductivity. It combines the advantages of high spatial resolution of ultrasonic imaging and high contrast ratio of electrical impedance tomography. It has potential application value in the early tumor diagnosis and bioelectricity monitoring. The analysis and detection of the magneto acoustic signal have a key role in improving the contrast resolution,imaging resolution and reconstruction accuracy of the electrical conductivity image. In this paper,the amplitude,the waveform characteristics and the frequency characteristics of the magnetic sound signal are review ed by the theoretical research,simulation and testing experiments of the weak magneto-acoustic signal. | ZHANG Shunqi YIN Tao LIU Zhipeng | 2016 | Instrumentation2016，3，4： | 2 |
| 4 | Active shape and vibration control for piezoelectric bonded composite structures using various geometric nonlinearities显示文摘 | ZHANG Shunqi LI Yaxi RDIGER S | 2015 | Composite Structures2015，122，4： | 1 |
| 5 | A Study of Acoustic Source Generation Mechanism of Magnetoacoustic Tomography 显示文摘 | Wang Shigang Zhang Shunqi Ma Ren | 2014 | COMPUT MED IMAG GRAP2014，38，1： | 1 |
| 6 | A study of a- coustic source generation mechanism of magnetoacoustic tomography 显示文摘 | WANG Shigang ZHANG Shunqi MA Ren | 2014 | Computerized Medical Imaging and Graphics2014，38，1： | 1 |
| 7 | A study of acoustic source generation mechanism of magnetoacoustictomography 显示文摘 | Wang Shigang Zhang Shunqi Ma Ren | 2014 | Computerized Medical Imaging and Graphics2014，38，1： | 1 |
| 8 | Advances in the development offunctional foods from buckwheat显示文摘 | LI Shunqi ZHANG Qinhua | 2001 | Crit Rev Food Sci Nutr2001，41，6： | 1 |
| 9 | A study on locating the sonic source of sinusoidal magneto-acoustic signals using a vector method 显示文摘 | Zhang Shunqi Zhou Xiaoqing Ma Ren | 2015 | Bio-Medical Materials and Engineering2015，26，： | 1 |
| 10 | Ultrasonic Microwave Assisted Extraction of Polysaccharides from Sipunculus nudus显示文摘[Objectives] This study was conducted to optimize experimental conditions for extraction of polysaccharides from Sipunculus nudus.[Methods]With the Sipunculus nudus from Sanya as the experimental material,S.nudus polysaccharide was extracted by ultrasonic microwave assisted method,during which univariate factors including solid-liquid ratio,time,temperature,ultrasonic power,microwave power were investigated,to select optimal extracting conditions,which were also demonstrated and optimized by variance and response surface analysis.The optimized conditions were adopted to carry out a test,in which the absorbance of S.nudus polysaccharide was measured with an ultraviolet and visible spectrophotometer,followed by the calculation of the extracting amount of polysaccharide,and precision test and recovery test were also carried out to verify the experimental method.[Results]The standard solutions were determined at the maximum absorption wavelength of 486 nm,and the regression equation was A = 0.2677 C + 0.001 8,R^2= 0.999 8.Solid-liquid ratio,time,temperature,ultrasonic power and microwave power were investigated by univariate analysis and then optimized by response surface method as follows: solid-liquid ratio at 1:20( g/ml),time of 35 min,temperature at 50 ℃,ultrasonic power at 420 W and microwave power at 300 W,under which the measured extracting amount of S.nudus polysaccharide was1.37 mg/g.The RSD was 0.985% in precision experiment.In the repeatability test,the extracting amounts of polysaccharide were 1.41,1.43 and 1.38 mg/g for three parallel tests,respectively,with a RSD of 1.140%.The recovery test obtained following results: for group a( added with glucose standard) : the recovery of S.nudus polysaccharide was in the range of 100.3%-101.4%,RSD = 0.03%; and for group b( not added with glucose standard) : the recovery of S.nudus polysaccharide was in the range of 99.7%-100.3%,RSD = 0.02%.[Conclusions]The research method is stable and reliable.This study provides data basis and reference for follow-up study on S.nudus. | Wen CHEN Xiangjun WANG Yujie WANG Shunqi ZHANG Xu LIN Chenjia JIAO Congcong ZHANG | 2018 | Agricultural Biotechnology2018，7，6： | 0 |
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