نتایج جستجو برای: underground cable
تعداد نتایج: 26983 فیلتر نتایج به سال:
Due to the overall regulation of modern cities, cables are often placed underground in urban areas, which correspondingly increases difficulty regular inspection, operation and maintenance. Most general text focuses on main issues cable grounding as research topic. After roughly outlining types faults, a comprehensive optimized analysis reasons for faults has been conducted. This provided clear...
Abstract In order to overcome the technical defects of traditional foundation pit support technology, such as complex serious pollution, waste resources, and obstruction construction surrounding underground structures, fully recovered deep system pressure dispersion anchor cable steel module is designed. The force compression deformation modular tested on-site. test results show that: (1) whole...
In this study, in order to examine the joint of the cable and the collar in control of scour around the bridge piles, experiments were carried out in a rectangular plexiglass flume as a direct path. The experiments were carried out using three different cable diameters, three different thread angles and three rounds of the cable threaded at a steady current in clear water. The results of this s...
With the rapid growth of underground cable trenches, corresponding inspections become a heavy burden, and an intelligent inspection robot for automatic examinations in trenches would be suitable solution. To achieve this, this paper establishes one new navigation methodology robots, especially when applied complex scenarios hardware. Firstly, to map with higher precision, improved graph optimiz...
Power transmission covering long-distances has shifted from overhead high voltage cables to underground power cable systems due numerous failures under severe weather conditions and electromagnetic pollution. The are limited by the melting point of insulator around conductor, which depends on surrounding soils’ heat transfer capacity or thermal conductivity. In past, numerical theoretical studi...
In this paper robust PID control of fully-constrained cable driven parallel manipulators with elastic cables is studied in detail. In dynamic analysis, it is assumed that the dominant dynamics of cable can be approximated by linear axial spring. To develop the idea of control for cable robots with elastic cables, a robust PID control for cable driven robots with ideal rigid cables is firstly de...
With the rapid expansion of urban areas and increasingly use electricity, need for locating buried cables is becoming urgent. In this paper, a noval method to locate underground based on Ground Penetrating Radar (GPR) Gaussian-process regression proposed. Firstly, coordinate system detected area conducted, input output are determined. The GPR moved along established parallel detection lines, hy...
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