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| 1 | High Speed On/Off Valve Control Hydraulic Propeller显示文摘The work-class remotely-operated-underwater-vehicles(ROVs) are mainly driven by hydraulic propulsion system,and the effeciency of hydraulic propulsion system is an important performance index of ROVs.However,the efficiency of traditional hydraulic propulsion system controlled by throttle valves is too low.Therefore,in this paper,for small and medium ROVs,a novel propulsion system with higher efficiency based on high speed on/off valve control hydraulic propeller is proposed.To solve the conflict between large flow rate and high frequency response performance,a two-stage high speed on/off valve-motor unit with large flow rate and high response speed simultaneously is developed.Through theoretical analysis,an effective fluctuation control method and a novel pulse-width-pulse-frequency-modulation(PWPFM) are introduced to solve the conflict among inherently fluctuation,valve dynamic performance and system efficiency.A simulation model is established to evaluate the system performance.To prove the advantage of system in energy saving,and test the dynamic control performance of high speed on/off valve control propeller,a test setup is developed and a series of comparative experiments is completed.The smimulation and experiment results show that the two-stage high speed on/off valve has an excellent dynamic response performance,and can be used to realize high accuracy speed control.The experiment results prove that the new propulsion system has much more advantages than the traditional throttle speed regulation system in energy saving.The lowest efficiency is more than 40%.The application results on a ROV indicate that the high speed on/off valve control propeller system has good dynamic and steady-state control performances.Its transient time is only about 1 s-1.5 s,and steady-state error is less than 5%.Meanwhile,the speed fluctuation is small,and the smooth propeller speed control effect is obtained.On the premise of good propeller speed control performance,the proposed high speed on/off valve control propeller can improve the effeciency of ROV propulsion system significantly,and provides another attractive ROV propulsion system choice for engineers. | ZHU Kangwu GU Linyi CHEN Yuanjie LI Wei | 2012 | Chinese Journal of Mechanical Engineering2012，25，3： | 12 |
| 2 | Kyphoplasty for the treatment of malignant vertebral compression fractures caused by metastases显示文摘 | Zhonglai Qian Zhiyong Sun Huilin Yang Yong Gu Kangwu Chen Guizhong Wu | 2010 | Journal of Clinical Neuroscience2010，，6： | 2 |
| 3 | Porcine model of congenital heart defect with decreased pulmonary blood flow 显示文摘 | Xuegang L Chao S Kangwu W | 2011 | Cell Biochem Biophys2011，61，3： | 1 |
| 4 | Analysis of risk factors for recurrence of giant cell tumor of the sacrum and mobile spine combined with preoperative embolization 显示文摘 | Zhou Ming Chen Kangwu Yang Huilin | 2013 | Turkish Neurosurgery2013，23，： | 1 |
| 5 | Analysis of risk factors for recur- rence of giant cell tumor of the sacrum and mobile spine combined with preoperative embolization 显示文摘 | Ming Z Kangwu C Huilin Y | 2013 | Turk Neurosurg2013，23，5： | 1 |
| 6 | Post-traumatic osteoporotic vertebral osteonecrosis treated using balloon kyphoplasty显示文摘 | Genlin Wang Huilin Yang Bin Meng Xuesong Zhu Jun Zou Minfeng Gan Xin Mei Kangwu Chen Tiansi Tang | 2010 | Journal of Clinical Neuroscience2010，，5： | 1 |
| 7 | Pre-operative emholization facilitating a posterior approach for thesurgieal resection of giant sacral neurogenic tumors显示文摘 | Kangwu Chen Ming Zhou Huilin Yang | 2013 | Oncology Let ters2013，6，1： | 1 |
| 8 | Homocysteine impaired endothelial function through compromised vascular endothelial growth factor/Akt/endothelial nitric oxide synthase signalling显示文摘 | Ting‐TingYan QianLi Xuan‐HongZhang Wei‐KangWu JuanSun LinLi QuanZhang Hong‐MeiTan | 2010 | Clinical and Experimental Pharmacology and Physiology2010，，11： | 1 |
| 9 | 中国加入世贸组织之后2002年的原油和油品贸易格局显示文摘 | KangWu 李万平 等 | 2002 | 世界石油工业2002，9，3： | 0 |
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