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| 1 | 基于状态观测和反馈的伺服系统位置控制器显示文摘为了提高永磁同步电机伺服系统中的位置控制性能,提出一种基于状态观测器和状态反馈的位置控制器。状态观测器可以利用较低精度的位置传感器来准确观测负载转矩、转子位置和转速。基于状态空间算法的位置控制器通过合适的零极点配置,可以提高位置控制性能。利用观测的负载转矩可以把负载的变化作为系统扰动进行补偿。仿真和实验结果表明:该控制器与传统的比例积分微分控制器相比,位置控制快速准确并且没有超调,在负载变化时系统仍然能够保持很好的稳定性和控制精度。 | 郑泽东 李永东 FADEL M 肖曦 | 2008 | 清华大学学报(自然科学版)2008,48,1: | 6 |
| 2 | Antimicrobial Agents from Selected Medicinal Plants in Libya显示文摘Objective:To test the in vitro antimicrobial efficacy of water and methanol extracts of 23 plan species that are commonly used in Libyan folk medicine.Methods:The antimicrobial activity was determinec using the well-diffusion method.Four test microorganisms were used namely,Escherichia coli,Salmonella species,Staphylococcus aureus and Bacillus subtilis.The minimum inhibitory concentration(MIC) was determined for the high biologically active crude plant extracts.Results:Among 23 medicinal plants used in the study,only 5 methanolic extracts[Rosmarinus offcinalis L,Carduus marianium L.,Lantana camara L.,Rhus tripartite(ueria) Grande,and Thymus capitatus(L.) Hoffm(link)]showed the highest antimicrobial activity againsl Staphylococcus aureus,Bacillus subtilis and Salmonella species,while 22 methanolic and aqueous extracts showed moderate to weak antimicrobial activity on all tested organisms.However 19 of the extracts showed no activity at all against Gram-ve and Gram +ve microorganisms.MIC was found to be 1.25 mg/mL(Thymus capitatus),3 mg/mL(Rhus tripartite),4 mg/mL(Carduus marianium),5 mg/mL(Rosamarinus officinalis) and5 mg/mL(Lantana camara),respectively.Conclnsions:The present results revealed that,crude methanolic extracts of the investigated Libyan folk medicinal plants exhibited mild to high in vitro antibacterial activities against Gram-positive and Gram-negative microorganisms. | Hasan MH Muhaisen Miftah Mailoud Ab-Mous Fadel A Ddeeb Aboclaid All Rtemi Omer M Taba Mehtab Parveen | 2016 | Chinese Journal of Integrative Medicine2016,22,3: | 2 |
| 3 | 肺动脉高压患者的负荷适应性显示文摘已知右心室对压力超负荷的适应是肺动脉高压(pulmonary arterial hypertension,PAH)患者预后的主要影响因素。为了评估右心室适应和负荷之间的关系,然后比较PAH中不同负荷适应性指数的预后价值,Amsallem及其同事纳入推导队列(n=85)和验证队列(n=200),使用3种方法评估负荷适应性:①脑室动脉耦合的替代物(例如右心室面积变化/收缩末期面积); | 刘莉 叶鹏 Amsallem M Boulate D Aymami M Guihaire J Selej M Huo J Denault AY McConnell MV Schnittger I Fadel E Mercier O Zamanian RT Haddad F | 2017 | 中华高血压杂志2017,25,8: | 2 |
| 4 | Multicell converters: Active control and observation of flying-capacitor voltages 显示文摘 | Gateau G Fadel M Maussion P | 2002 | IEEE Trans on Industrial Electronics2002,49,5: | 1 |
| 5 | Carbon monoxide and volatile organic compounds as indicators of indoor air quality in underground parking facilities显示文摘 | Fadel M E Alameddine I Kazopoulo M | 2001 | Indoor and Built Environment2001,10,2: | 1 |
| 6 | Serotonin transporter overexpression is responsible for pulmonary artery smooth muscle hyperplasia in primary pulmonary hypertension显示文摘 | Eddahibi S Humbert M Fadel E | 2001 | J Clin Invest2001,108,8: | 1 |
| 7 | Serotonin transporter over expression is responsible for pulmonary artery smooth muscle hyperplasia in primary pulmonary hypertension 显示文摘 | Eddahibi S Humbert M Fadel E | 2001 | J Clin Invest2001,108,: | 1 |
| 8 | Long-term resuolts (up to 17 years) of pulmonary balloon valvuloplasty in adults and its effects on concomitant severe infundibular stenosis and tricuspid regurgitation 显示文摘 | FAWZY M E HASSAN W FADEL B M | 2007 | Am Heart J2007,153,3: | 1 |
| 9 | Classifying functions for mechanical design 显示文摘 | Fadel G M | 1998 | ASME Journal of Mechanical Design1998,120,3: | 1 |
| 10 | Serotonin trans porter overexpression is responsible for pulmonary artery smooth muscle hyperplasia in primary pulmonary hyper tension显示文摘 | Humbert M Fadel E | 2001 | J Clin Invest2001,108,8: | 1 |
| 11 | Classifying for function for mechanical design显示文摘 | Kirschman C F Fadel G M | 1998 | ASME Journal of Mechanical Design1998,120,3: | 1 |
| 12 | Two point exponential approximation method for structural optimization 显示文摘 | Fadel G M Riley M F Barthelemy J M | 1990 | Structural Optimization1990,2,: | 1 |
| 13 | Long-term (up to 18 years) clinical and eehoeardiographie results of mitral balloon valvuloplasty in 531 consecutive patients and predictors of outcome显示文摘 | Fawzy ME Shoukri M Fadel B | 2009 | Cardiology2009,113,3: | 1 |
| 14 | Classifying Functions for Mechanical Design显示文摘 | KIRSCHMAN C F FADEL G M | 1998 | Journal of Mechanical Design1998,120,3: | 1 |
| 15 | Robust control of switched power converters via sliding mode显示文摘 | Nicolas B Fadel M Cheron Y | 1996 | ETP1996,6,3: | 1 |
| 16 | Pulmonarythromboendarterectomy for chronic thromboembolic obstruction ofthe pulmonary artery in piglets显示文摘 | Fadel E Riou JY Mazmanian M | 1999 | J Thorac Cardiovasc Surg1999,117,4: | 1 |
| 17 | Methane emissions from wastewater management显示文摘 | EI FADEL M MASSOUD M | 2001 | Environmental Pollution2001,114,2: | 1 |
| 18 | Chitosan /rice straw nanofibers nanocomposites: Preparation, mechanical, and dynamic thermomechanical properties 显示文摘 | HASSAN M L FADEL S M EL-WAKIL N A | 2012 | Journal of Applied Polymer Science2012,125,2: | 1 |
| 19 | Managing flexion knee deformity using a circular frame显示文摘 | Hosny GA Fadel M | | 0,,12: | 1 |
| 20 | Resection of locally advanced (T4) non-small cell lung cancer with cardiopulmonary bypass 显示文摘 | de Perrot M Fadel E Mussot S | 2005 | Ann Thorac Surg2005,79,5: | 1 |