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148篇 您的检索式:作者名="Steyn H"
    题名 作者 年代 出处 被引量
1低轨道航天器姿态跟踪机动控制研究显示文摘某些低轨道航天器在执行任务时 ,需要通过姿态控制系统使其有效载荷 (如星载相机 )在一段时间里连续指向地面或空间的给定目标。文中研究了带 3个反作用飞轮的低轨道航天器的姿态跟踪开展问题。首先根据刚体运动学知识推导出航天器的参考姿态角、参考角速度和参考角加速度表达式 ,然后基于卫星航天器姿态动力学给出了 3个互相垂直安装的反作用飞轮的控制律 ,并利用 L yapunov稳定性理论证明了闭环系统的渐近稳定性。李俊峰 徐敏 Steyn W H 2001清华大学学报(自然科学版)2001,41,2:15
2Diurnal blood pressure variation in the evaluation of early onset severe preeclampsia显示文摘STEYN D W ODENDAAL H J HALL D R 2008Eur J Obstet Gynecol Reprod Biol2008,138,2:1
3Attitude control systems for agile atatellites using control moment gyros 显示文摘LAPPAS V J STEYN W H UNDERWOOD C I 2002Acta Astronautica2002,51,1:1
4Defining “Project Governance” for Large Cap-ital Projects 显示文摘Bekker M C Steyn H 2009South African Journal of Industrial Engineering2009,20,2:1
5Project management applications of the theory of constraints beyond critical chain scheduling 显示文摘Steyn H 2002International Journal of Project Management2002,20,1:1
6Diet, nutrition and the prevention of type 2 diabetes显示文摘STEYN N P MANN J BENNETT P H 2004Public Health Nutr2004,7,:1
7Advanced control with fun-damental and data-based modeling for falling film evapora-tors显示文摘HaasbroekA Steyn H Auret L 2013IEEE2013,113,8:1
8Randomised controlled trial of ketanserin and aspirin in prevention of pre-eclampsia显示文摘 Odendaal H J 1997Lancet1997,350,:1
9Effect of synchronization of energy and nitrogen supply on ruminal characteristics and microbial growth 显示文摘Henning P H Steyn D G Meissner H 1993J Anita Sei1993,71,:1
10Project management applications of the theory of constraints beyond critical chain scheduling显示文摘STEYN H 2002International Journal of Project Management2002,20,3:1
11Dihydralazine or ketanserin for severe hypertension in pregnancy? Pre-liminary results显示文摘 Odendaal H J 1997Eur J Obstet Gynecol Rrprod Biol1997,75,:1
12Purification and characterization of a novel heparinase显示文摘 Pitout M J Steyn P L 1990J Biological Chemistry1990,265,13:1
13An investigation into the fundamentals of critical chain project scheduling 显示文摘STEYN H 2000International Journal of Project Management2000,18,6:1
14Expectant management of early onset,severe pre-eclampsia:maternal outcome 显示文摘HALL D R ODENDAAL H J STEYN D W 2000Br J Obstet Gynecol2000,107,10:1
15An investigation into the fundamentals of critical chain project scheduling显示文摘STEYN H 2000International Journal of Project Management2000,19,6:1
16Proline accumulation in response to drought and heat stress in cotton显示文摘RONDE J A MESCHT A V D STEYN H S F 2000African Crop Science Journal2000,8,1:1
17Improve perinatal mortality rates in 1001 patients with severe preeclampsia 显示文摘ODENDAAL H J STEYN D W NORMAN K 1995S Afr Med J1995,85,10:1
18Project Management Applications of the Theory of Constraints beyond Critical Chain Scheduling显示文摘 2002International Journal of Project Management2002,,20:1
19Urinary protein excretion and expectant management of early onset, severe preeclampsia 显示文摘Hall DR Odendaal H J Steyn DW 2002Int J Gynecol Obstet2002,77,1:1
20Project management applications of the theory of constraints beyond critical chain scheduling显示文摘STEYN H 2002International Journal of Project Management2002,20,1:1
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