共搜索到4853条信息，每页显示10条信息，共486页。用时：0小时0分0秒897毫秒
Effect analysis of friction and damping on anti-backlash gear based on dynamics model with time-varying mesh stiffnessYANG Zheng(杨政), SHANG Jian-zhong(尚建忠), LUO Zi-rong(罗自荣) (School of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, China)Abstract:A nonlinear model of anti-backlash gear with time-varying friction and mesh stiffness was proposed......
Effect of nonlinear impact damping with non-integer compliance exponent on gear dynamic characteristicsWU Li-juan(吴丽娟), TANG Jin-yuan(唐进元), CHEN Si-yu(陈思雨) (State Key Laboratory of High Performance Complex Manufacturing(Central South University), Changsha 410083, China)Abstract:A nonlinear impact damping model of single-degree-of-freedom spur cylindrical gear with backlash and time-varying......
Dynamic characteristics of the planetary gear train excited by time-varying meshing stiffness in the wind turbineRui-ming Wang1,Zhi-ying Gao2,Wen-rui Wang2,Yang Xue1,De-yi Fu11. State Key Laboratory... wind conditions, and the harmonic excitation are investigated. The analysis of the time-varying meshing stiffness and the dynamic meshing force shows that the dynamic design under different loads can......
J. Cent. South Univ. Technol. (2008) 15(s1): 057-060 DOI: 10.1007/s11771-008-314-2 New algorithm applied to vibration equations of time-varying system CHEN Rui-lin(陈锐林)1, 2, ZENG Qing-yuan(曾庆元..., Xiangtan 411105, China) Abstract: Vibration equations of time-varying system are transformed to the form which is suitable to precise integration algorithm. Precision analysis and computation efficiency......
Trans. Nonferrous Met. Soc. China 31(2021) 2532-2544 Time-varying impact of political risk on copper prices Jing TANG1, Jian-bai HUANG1,2, Hong-wei ZHANG2,3, Yu-mei LUO1 1. School of Business... that the impact of political risk on copper prices is time-varying and has tended to increase gradually in recent years. There are significant country-level differences in the impact of political risk......
during the Trump election, the impact displays positive and negative alternating in most countries. Key words: economic policy uncertainty; gold price; time-varying effects; TVP-SVAR-SV... displayed significant differences, as shown in Fig. 5. Fig. 5 Time-varying responses of gold prices to EPU at different time periods Specifically, during the international financial crisis, the impact......
, the time-varying backlash caused by both MEs and AEs, and the contact ratio under load conditions are also investigated. The results show that the novel method can effectively predict the range... in the design stage of gear systems. Key words: gear; transmission error; time-varying backlash; prediction method; accuracy grade Cite this article as: LIU Chang, SHI Wan-kai, Francesca Maria CURA......
J. Cent. South Univ. (2017) 24: 382-393 DOI: 10.1007/s11171-017-3440-5 Leader-following coordination of multiple UUVs formation under two independent topologies and time-varying delays YAN Zhe-ping... and it is easy to be interfered under the water, time delay is assumed to be time-varying during the members communicate with each other. Meanwhile, the state feedback linearization method is used to transfer......
A novel stabilization approach for small signal disturbance of power system with time-varying delayYANG Bo(杨波), SUN Yuan-zhang(孙元章) (School of Electrical Engineering, Wuhan University, Wuhan 430072... delay influence and can not precisely describe power system dynamic behaviors. In this work, a modified small signal stability model considering time varying delay influence was constructed and a new time......
: This paper seeks to model and forecast the Chinese nonferrous metals futures market volatility and allows new insights into the time-varying volatility of realized volatility and leverage effects using high-frequency data. The LHAR-CJ model is extended and the empirical research on copper and aluminum futures in Shanghai Futures Exchange suggests the dynamic dependencies and time-varying volatility......
