期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Theoretical Analysis of Noise of Piston Knocking Cylinder Wall in Automotive Engines 被引量:1
1
作者 肖云魁 李世义 +2 位作者 曹亚娟 杨万成 冯汉生 《Journal of Beijing Institute of Technology》 EI CAS 2005年第3期284-288,共5页
Based on the loading conditions of engine, applying difference method to solve the hydrodynamic lubrication equation of piston skirt movement, the force acting on piston skirt and the moment on wrist pin were obtained... Based on the loading conditions of engine, applying difference method to solve the hydrodynamic lubrication equation of piston skirt movement, the force acting on piston skirt and the moment on wrist pin were obtained. A computer program for simulating the piston second order motion was conducted to calculate the lateral motion of the upper part and the bottom part of piston skirts of the engine of automotive model CA1091. From the simulated result, the maximal impacting phase and the maximal impacting region of the piston were obtained. The result can be used for designing engine, diagnosing the noise of piston knocking cylinder wall and explaining many practical fault phenomena in theory. 展开更多
关键词 piston knocking cylinder wall second order motion fault diagnosis
下载PDF
Karhunen-Loeve expansions for the m-th order detrended Brownian motion 被引量:2
2
作者 AI XiaoHui LI WenBo V. 《Science China Mathematics》 SCIE 2014年第10期2043-2052,共10页
The m-th order detrended Brownian motion is defined as the orthogonal component of projection of the standard Brownian motion onto the subspace spanned by polynomials of degree up to m. We obtain the Karhunen-Loeve ex... The m-th order detrended Brownian motion is defined as the orthogonal component of projection of the standard Brownian motion onto the subspace spanned by polynomials of degree up to m. We obtain the Karhunen-Loeve expansion for the process and establish a connection with the generalized (m-th order) Brownian bridge developed by MacNeill (1978) in the study of distributions of polynomial regression. The resulting distribution identity is also verified by a stochastic Fubini approach. As applications, large and small deviation asymptotic behaviors for the L2 norm are given. 展开更多
关键词 m-th order detrended Brownian motion Karhunen-Loeve expansions stochastic Fubini approach Zeilberger algorithm large deviation small deviation
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部