Cable winch is a crucial component of the shore power system, and Permanent Magnet Synchronous Motor (PMSM) with high efficiency and good maintainability is always used as the drive motor for ship cable winch. In order to deal with the various and complex ocean environment, it is rather important for cable winches to keep the tension constant when picking and laying cables so as to realize cons...

A new self-powered magnetorheological (MR) damper control system was developed to mitigate cable vibration. The power source of the MR damper is directly harvested from vibration energy through a rotary permanent magnet direct current (DC) generator. The generator itself can also serve as an electromagnetic damper. The proposed smart passive system also incorporates a roller chain and sprocket,...

The load transfer mechanisms of cable bolts differ from those for normal rebar bolts. The cable bolts used in mines are basically steel strands with different constructions depending on the number of wires or elements and the way they are laid. Tendon bolts (rebar and cable) are normally evaluated for their strength and load transfer properties. The tendon strength can be evaluated by the tensi...

This paper describes a methodology for use in dimensioning the power requirements for provision of telephony over coaxial cable networks. A model describing the distributed power system elements in a coax network is presented. Guidelines are given for cost optimisation of the coax power network. An example of dimensioning the power for telephony on a typical coax network for a given grade-of-se...

A new regulatory debate has sprung up around the pricing of TV networks on cable and satellite systems. Many argue that bundling networks on tiers, rather than selling channels individually, is anti-consumer and forces families to purchase programming they don't value and often find ofensive. The Federal Communications Commission, after issuing sharply conflicting reports on the subject, is con...

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...

Nuclear power plants contain a significant amount of fire load in form of electrical cables. The performance of the cables is interesting both from the fire development and system failure viewpoints. In this work, cable tunnel fires are studied using numerical simulations, focusing on the fire spreading along power cables and the efficiency of the water suppression in preventing the cable failu...

Power Line Communication (PLC) has been considered as attractive media for high speed data transmission, particularly for applications like home networking, internet, voice and data services. For the use of the low voltage networks as high speed data channel the path carrier frequencies within the range up to 30 MHz must be considered. The development of suitable communication systems and the p...