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期刊论文 2

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2022 1

2006 1

关键词

定位；中心对称十字阵；非圆信源；近场；方向矢量分解 1

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Design Method and Numerical Control Machining Principle for an Arbitrary n-polygon Noncircular Section

WU Yi-jie, LENG Hong-bin

《机械工程前沿（英文）》 2006年 第1卷 第1期   页码 71-75 doi: 10.1007/s11465-005-0005-8

摘要：

By analyzing the structure characteristics of arbitrary n-polygon noncircular sections, mathematical formulas among the characteristic parameters were set up, and a theorem for designing this kind of sections was deduced by mathematical induction method. Based on the mechanistic transmission principle, the control theorems for the numerical control (NC) grinding of arbitrary n-polygon noncircular sections and the control model for the multicoordinate motion were built. A feed rate selfadjusting method was proposed to uniform the grinding speed with the changes of sectional curvature. Then, an NC machine tool for grinding n-polygon noncircular sections was developed. The test results of the grinded parts showed that the section profiles accorded with the design demands: the roughness was less than 0.32 ?m and the dimensional accuracy was within 8 ?m. The results prove that the proposed theorems and method can effectively direct the design and manufacture of the polygonal noncircular connection.

关键词： manufacture     multicoordinate     characteristic     polygonal noncircular     mechanistic transmission    

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利用方向矢量分解的近场及严格非圆信源三维定位 Research Article

李正1,2,沈金清1,2,张小飞1,2

《信息与电子工程前沿（英文）》 2022年 第23卷 第4期   页码 644-652 doi: 10.1631/FITEE.2100034

摘要： 关于中心对称十字阵下近场及严格非圆信源的三维定位很少有报道。本文提出一个性能改进算法。分离方向矢量中多个参数以将方向矢量转变为若干矩阵的乘积形式，并且每个矩阵只包含一个参数。由此可以通过一个一维谱搜索来解决每个待估计参数。尽管该算法复杂度是我们之前提出算法的若干倍，然而，其关于波达方向的估计误差和分辨率估计性能得到提升，同时距离估计性能也能够保持不变。所提算法优越性在仿真结果中得到验证。

关键词： 定位；中心对称十字阵；非圆信源；近场；方向矢量分解    

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标题 作者 时间 类型 操作

Design Method and Numerical Control Machining Principle for an Arbitrary n-polygon Noncircular Section

WU Yi-jie, LENG Hong-bin

期刊论文

利用方向矢量分解的近场及严格非圆信源三维定位

李正1,2,沈金清1,2,张小飞1,2

期刊论文