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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Nikolaos, I. Xiros |
| Copyright Year | 2011 |
| Abstract | A cycle-mean-value, quasi-steady, thermodynamic model of slow-speed, two-stroke marine Diesel engines, used for performance prediction and engine-propeller/turbocharger matching, is converted into a power-plant analytic model. The dynamic part of the cycle-mean model consists of the two first-order differential equations for the cycle-mean crankshaft and turbocharger shaft rotational accelerations. This form implies a state-space formulation of the power-plant modeling approach. However, engine, turbine and compressor torques have to be calculated through the solution of the algebraic part of the model, which consists of a nonlinear, perplexed algebraic system of equations not analytically solvable. This inhibits the formulation of the power-plant state-space description. By approximating the torque maps, generated by the thermodynamic model, with neural nets, explicit functional relationships are obtained. Identification of the power-plant operating regimes through linearization and decomposition is performed. In effect, a supervisory power-plant controller structure, applicable to real-time control and diagnostics, is proposed, incorporating the nonlinear state-space description of the plant. |
| Starting Page | 907 |
| Ending Page | 915 |
| Page Count | 9 |
| File Format | |
| ISBN | 9780791854938 |
| DOI | 10.1115/IMECE2011-63797 |
| Volume Number | Volume 7: Dynamic Systems and Control; Mechatronics and Intelligent Machines, Parts A and B |
| Conference Proceedings | ASME 2011 International Mechanical Engineering Congress and Exposition |
| Language | English |
| Publisher Date | 2011-11-11 |
| Publisher Place | Denver, Colorado, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Cycles Torque Propellers Artificial neural networks Control equipment Compressors Modeling Engines Algebra Diesel engines Differential equations Propulsion Power stations Real-time control Turbochargers Turbines |
| Content Type | Text |
| Resource Type | Article |
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