By D Gray, A. J. S. Bennett
Centralized and automated Controls in Ships supply a non-mathematical uncomplicated advent to the topic of keep watch over engineering utilized within the marine box. This booklet consists of 20 chapters that conceal the elemental ideas of the gear in ships.
The beginning chapters take care of send parts, building, and commissioning regimen for sure computerized plant. the subsequent chapters think about the fundamental rules of automated regulate and controllers. those themes are by means of discussions on good judgment devices and information processing apparatus, different keep watch over components, steam generators, and diesel engines. different chapters illustrate the applying of keep watch over suggestions to the foremost components of the ship’s equipment. the ultimate chapters learn send and ship’s regulate approach commissioning and upkeep.
This e-book is a useful resource for marine engineers and marine engineering scholars.
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Additional info for Centralized and Automatic Controls in Ships
Solid state devices are particularly susceptible to voltage transients and may be completely destroyed by high overvoltages. This raises problems for the designer of such equipment and, indeed, equipment which has proved its reliability ashore may not necessarily be satisfactory in the marine environment. Separate stabilized power supplies may be the only satisfactory solution. Practical experience of the failure rate of such equipment is not widespread and literature on the subject is relatively limited but the reports that have been published indicate a good level of reliability.
Thus digital representation of a quantity is a number, often (although by no means necessarily) obtained by counting individual increments. g. manoeuvring) of machinery analogue presentation is usually preferred, since in this form, trends which take place rapidly, are more readily interpreted and understood by the watchkeeper. g. settled voyage conditions, digital displays are sufficient to indicate a healthy or unhealthy state of items of machinery. Alarm systems, which are digital in character, can meet this basic need.
E. there is a minimum step of one-tenth of a mile required in the measured quantity before the milometer value changes. The milometer is, in fact, a mechanical counter which counts the number of revolutions of the car's wheels, through a suitable gear ratio. Other examples are: Liquid volume may be measured as integrated flow by counting the number of revolutions of a paddle wheel rotated by the liquid as it flows through a pipe. The length of a steel billet may be measured by counting the number of rotations of the mill rollers (with corrections to allow for slip between the rollers and the billet).