Simulation on Model Performance of Ship’s Diesel Engine Propulsion in Calm Water

2014 ◽  
Vol 69 (7) ◽  
Author(s):  
NurIzzuddin NurIzzuddin ◽  
Sunarsih Sunarsih ◽  
Agoes Priyanto ◽  
Rahimuddin Rahimuddin
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Real Time ◽  
Marine Diesel Engine ◽  
Real Time Control ◽  
Rotating Speed ◽  
Time Control ◽  
Calm Water ◽  
Marine Diesel ◽  
Ship Speed

Ship performance is prevalently evaluated during calm water condition though contrarily the ships operated in actual rough sea environments. The paper elaborates a mathematical model of marine diesel engine propulsion system to estimate real performance of ships in calm water through the proposed computer-simulated model. A post Panamax container ship and LNG tanker are employed as target ships of this study. The analysis of the model includes propeller rotating speed and torque from which the required engine power is estimated to achieve the target speed. These input and output are real-time control system of propeller rotating speed reflecting the characteristics of marine diesel engine. The result has established ultimate limit of affecting features of a real-time control system to control ship speed, power and propeller torque. Further use of the model is advantageous to analyse different condition of ship speed for finding better design characteristics.

Marine Diesel Engine Simulator for Self-Propulsion Test in Evaluating the Fuel Saving Rate

2015 ◽  
Vol 799-800 ◽  
pp. 870-875
Author(s):  
Sunarsih ◽  
Izzuddin Nur ◽  
Agoes Priyanto
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Diesel Engine ◽  
Real Time ◽  
The Self ◽  
Marine Diesel Engine ◽  
Saving Rate ◽  
Fuel Saving ◽  
Rotating Speed ◽  
Marine Diesel

As the vessel operates in the rough open seas, a marine diesel engine simulator which engine rotation is controlled to transmit through propeller shaft is a new methodology for the self-propulsion tests to track the fuel saving in a real time. Considering the circumstance, this paper presents the real time of marine diesel engine simulator system to track the real performance of a ship through computer-simulated model. A mathematical model of marine diesel engine and the propeller are used in the simulation to estimate fuel rate, engine rotating speed, thrust and torque of the propeller thus achieve the target vessel’s speed. The input and output are real time control system of fuel saving rate and propeller rotating speed representing the marine diesel engine characteristics. The self-propulsion test simulation results in calm water [7] were compared to validate the present marine diesel engine simulator. The present simulator then was used to evaluate the fuel saving by employing a new mathematical model of turbocharged marine diesel engine and was applied to a full scale target vessel. The control system developed will be beneficial for users as to analyze different condition of vessel’s speed to obtain better characteristics and hence optimize the fuel saving rate.

A New Flexible Rapid Thermal Processing System

1995 ◽  
Vol 389 ◽  
Author(s):  
K. C. Saraswat ◽  
Y. Chen ◽  
L. Degertekin ◽  
B. T. Khuri-Yakub
Keyword(s):  
Control System ◽  
Real Time ◽  
Processing System ◽  
Process Conditions ◽  
Temperature Uniformity ◽  
Real Time Control ◽  
Wafer Temperature ◽  
Time Control ◽  
Wide Range ◽  
Optical Flux

ABSTRACTA highly flexible Rapid Thermal Multiprocessing (RTM) reactor is described. This flexibility is the result of several new innovations: a lamp system, an acoustic thermometer and a real-time control system. The new lamp has been optimally designed through the use of a “virtual reactor” methodology to obtain the best possible wafer temperature uniformity. It consists of multiple concentric rings composed of light bulbs with horizontal filaments. Each ring is independently and dynamically controlled providing better control over the spatial and temporal optical flux profile resulting in excellent temperature uniformity over a wide range of process conditions. An acoustic thermometer non-invasively allows complete wafer temperature tomography under all process conditions - a critically important measurement never obtained before. For real-time equipment and process control a model based multivariable control system has been developed. Extensive integration of computers and related technology for specification, communication, execution, monitoring, control, and diagnosis demonstrates the programmability of the RTM.

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