Cover of Robust Control of Diesel Ship Propulsion
Read Time: ~3.6 hr

Robust Control of Diesel Ship Propulsion

by Nikolaos Xiros (2002)

About this book

The control of marine engines and propulsion plants is a field of increasing interest to the maritime industry. The author's participation in a number of closely related research projects together with practical shipboard experience allows Robust Control of Diesel Ship Propulsion to present a broad view of the needs and problems of the shipping industry in this area. The book covers a number of models and control types: An integrated nonlinear state-space model of the marine propulsion system is developed. This is based upon physical principles that incorporate uncertainties due to engine thermodynamics and disturbances due to propeller hydrodynamics. The model employs artificial neural nets for depicting the nonlinearities of the thermochemical processes of engine power/torque generation and the engine-turbocharger dynamical interaction; neural nets combine the required mathematical flexibility and formalism with numerical training and calibration options using either thermodynamic engine models or measured data series. The neural state-space model is decomposed appropriately to provide a linearised perturbation model suitable for controller synthesis. The proportional integral (derivative) control law is examined under the perspective of shaft speed regulation for enhanced disturbance rejection of the propeller load. The typical marine shafting system dynamics and configuration allow for a smart implementation of the D-term based on shaft torque feedback. Full-state feedback control is, examined for increased robustness of the compensated plant against parametric uncertainty and neglected dynamics. The H-infinity requirements on the closed-loop transfer matrix are appropriately decomposed to similar ones on scalar transfer functions, which give specifications which are easier to manipulate. In effect, the methods are comparatively assessed and suggestions for extensions and practical applications are given. This synthetic approach to the propulsion plant control and operational problems should prove useful for both theoreticians and practitioners, and can be easily adopted for the control of other processes or systems outside the marine field, as well.

Setting / LocationDeep Space
Story EraModern Era
Protagonist / CoreRobust Control of Diesel Ship Propulsion Lead Character

Readers who enjoyed this also loved

Cover of Soulspace

Soulspace

Xorin Balbes

"Expertly designed and decorated homes don't necessarily feel like havens to their dwellers or reflect, inspire, and celebrate what is essential about their inhabitants. Lauded designer and architectural conservator Xorin Balbes created the eight-stage SoulSpace transformation process to help his clients do just that. Through the stages -- assess, release, cleanse, dream, discover, create, elevate, and celebrate -- readers explore not only the design of their living spaces but also their own interiors: the ways they think, feel, and sense. Through client stories, exercises, Q & As, and bountiful photos and illustrations, Balbes guides readers to decode clues to what they wish for, deny, and need to move forward. Empowered with this self-knowledge, they are free to declutter, refresh, and enhance their living spaces. Suitable for any budget and for one wall or one room, apartments or mansions, Balbes's wonderfully unique technique nurtures and transforms both souls and their spaces"--

Cover of Musical Temperaments

Musical Temperaments

Erich Neuwirth

This multimedia product (book) lets the reader investigate the mathematical foundations of musical tuning systems as theory and as audible experience. The embedded acoustical examples help to establish immediate connection between the formulas and the acoustical characteristics of different musical scales. The musical temperaments covered in the document are Pure, Pythagorean, Meantone, and Equal, the historically most important tuning systems. For each one of these temperaments the construction principles are explained in detail and with interactive visual aids, and whenever a mathematical formula for an interval is derived, this interval is made audible and can easily be compared with similar intervals in the different tuning systems. The sound examples in the multimedia version cover intervals, scales, and chords in the different tuning systems, and some examples even allow to listen to different scales simultaneously on the two channels of a stereo system. Besides being an introductory text with sound the document also contains a reference part which gives easy access to all the sound examples in a systematic way. System requirements: IBM PC or compatible, 8 MB RAM, CD-ROM drive, Soundcard, VGA Graphic Adapter, 16 colours, 40 MB free diskspace; Windows 3.x, Windows 95, Windows NT 4.0 European Academic Software Award 1996!

Cover of Spacebusters

Spacebusters

Philip Wilkinson

Describes the voyage of Apollo 11, its three astronauts, and details of the mission that put the first man on the moon in 1969.

Cover of El mundo

El mundo

Juan José Millas

Juan José Millás tiene la capacidad de convertir hechos cotidianos y rutinarios en auténticas experiencias vitales. Es todo un arte que desarrolla en “El Mundo”. Una obra definida como autobiográfica, en la que supuestamente tenemos a un Juanjo de diez años, en su barrio, su casa y su calle -llenas de terribles carencias, sobre todo las afectivas-, donde se desenvuelve con dificultades. “El vitaminas” es su amigo. Un niño enfermo que le llena la cabeza de fantasías que los dos encuentran espiando desde el ventanuco del sótano de “El vitaminas”, donde éste le desvela fantásticos secretos. Millás, con una capacidad retórica y un manejo léxico magnífico llena las páginas de ternura y sordidez por igual. La ternura de la inocencia de los pequeños y la sordidez de sus peculiares aventuras. Se retroalimentan con esos secretos-mentiras que les hacen vibrar, dentro de sus simples vidas. Puedes o no creértelo, puedes hacer como que te crees que esos niños se lo creen, y es entonces cuando el lector disfruta, si te dejas atrapar por la extraña magia que esos secretos imposibles: el padre del “Vitaminas” trabaja en la Interpol y los dos niños llegan a “visitar” el que llaman, el mundo de los muertos. Millás intercala sus vivencias y los traumas de su infancia con su visión como adulto. Un escritor adulto lleno de paranoias que no sabemos si son resultado de su excentricidad o de no haber podido resolver sus traumas infantiles. Como el de María José, la hermana del “Vitaminas”, con la que sufre un encantamiento del que no obtiene respuesta. Cuesta creer que esta niña, luego mujer, sea tan rara. Yo diría hasta “petarda”, porque no sabe qué hacer con su vida incluso cuando crece. La calle en la que viven Juanjo y su amigo es su emoción diaria, el mundo que se inventan y que da título al libro. Llega un momento en el que ya no sabemos qué es real: no sabemos si el niño Juanjo ha creído ver este mundo o es una ensoñación, como otras tantas que describe este libro que sin duda no es para “Planeta” a pesar de que obtuviera este premio en 2007, aunque desde hace mucho es difícil creer que las obras premiadas tienen categoría o altura para merecerlos. Aun así, lo cortés no quita lo valiente. “El mundo” es una historia contada de manera diferente, muy fluida, tan fluida que te resbalas por las palabras y te embalas leyendo, que te hace reír y muchas veces apretar los dientes en tramos puntuales, como los que nos cuentan la tristeza que rodea la vida de Juanjo (es trágico el capítulo de los malos tratos). Eso claro, en el caso de que así fuera, porque -simplemente- puede que ésa sea la manera en la que el autor lo sintió. Si no gusta o no se sabe apreciar “el toque Millás”, es posible que muchos lectores hayan abandonado esta aventura con “El Mundo”. Un libro de premio antiguo, que cojo mucho después de su bombo del momento, porque -en general- huyo como de la peste de los laureles por kilos que atraen los galardones de este tipo. Prefiero dejar pasar el tiempo para que no me arrolle la bandada de reseñas, críticas y comentarios que se acumulan cuando se produce la publicación o la adjudicación de megapremios a un libro.

Robust Control of Diesel Ship Propulsion by Nikolaos Xiros | Literally Just Books