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into contact with 100C6 steel ball with a diameter of 6 mm. All tests were performed at the same sliding speed of 100 r/min (0.052 m/s). The applied normal load was 1 N. Friction tests were performed...; dry sliding friction; surface characterization 1 Introduction Wrought aluminum-magnesium alloys (5xxx) have been widely used in automotive, shipbuilding and engineering construction due......
and the dry sliding wear behaviour were assessed by Vickers micro-hardness tester and pin-on-disc wear test setup, respectively. It is revealed that almost uniform alloyed layer forms on the AZ91 alloy substrate for a specific current and scan speed employed in the present experiments. The alloyed layer exhibits hardness value up to 305 HV0.25, and almost negligible wear as compared to the as-received......
J. Cent. South Univ. (2016) 23: 2296-2304 DOI: 10.1007/s11771-016-3287-6 Fuzzy robust sliding mode control of a class of uncertain systems REN Li-tong(任立通)1, XIE Shou-sheng(谢寿生)1, MIAO Zhuo-guang(苗卓... external disturbances, a method of fuzzy robust sliding mode control was proposed. Firstly, an integral sliding mode surface containing state feedback item was designed based on robust H∞ control theory......
; 文献标志码:A 文章编号:1672-7207(2018)03-0566-08 Nonlinear bending-torsional dynamics of geared rotor system supported by sliding.... College of Mechanical Engineering, Anhui Science & Technology University, Chuzhou 233100, China) Abstract: A nonlinear dynamic model of geared rotor system coupling with sliding bearing was established......
against steel [J]. Journal of Materials Science, 1997, 32: 5069-5083. [34] GOMES J R, SILVA O M, SILVA C M, PARDINI L C, SILVA R F. The effect of sliding speed and temperature on the tribological...Trans. Nonferrous Met. Soc. China 29(2019) 1903-1913 Reciprocating sliding tribology of brake oil treated carbon fiber reinforced ceramic matrix composites Parshant KUMAR, Vijay Kumar SRIVASTAVA......
J. Cent. South Univ. Technol. (2011) 18: 573-579 DOI: 10.1007/s11771-011-0733-3 Optimum control strategy for all-variable speed chiller plant JIANG Xiao-qiang(蒋小强)1, 2, LONG Wei-ding(龙惟定)3, LI... to the chiller plant can bring a saving of 23.27% in power compared with the corresponding conventional variable speed plant, indicating that the optimal control strategy can improve the energy efficiency......
; 文章编号:1672-7207(2012)01-0137-06 Neural network sliding mode control for constant pressure hydrostatic transmission system ZHAO Li-jun1, 2, 3, LI Guo-jun1, JIANG Ji-hai2, 3 (1... Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China) Abstract: A two degrees of freedom vehicle dynamic model was set up for speed control according......
, suitable driving speed which is not less than the critical velocity, reasonable friction coefficient difference, higher damping ratio and smaller tightening. Key words: megawatt wind power; sliding... corresponding solutions were gotten. The results show that some factors such as torsional stiffness, yaw drive speed, friction coefficient difference, damping ratio and pressure are the major leading......
J. Cent. South Univ. (2016) 23: 2008-2023 DOI: 10.1007/s11771-016-3258-y
temperature using a pin-on-disc tribometer with applied loads of 2, 5, 10 and 15 N at a constant sliding speed and distance of 3.14 m/s and 2200 m, respectively, and a track radius of 60 mm in an EN31 steel as counterface with a rotational speed of 500 r/min. The dry sliding wear tests were performed using the pin-on-disk equipment with 20 mm long composite pins of 10 mm in diameter in accordance......