Abstract
This paper proposes a method to improve the performance of a ship's power plant by reducing accidents within it under transitional operating modes. The method is based on decreasing the number of service personnel errors by using a model-oriented decision support system. In order to implement the proposed method, the structure of the system of automatic control of the ship's power plant has been improved. Such an improvement of the control system implied the integration of a modeling unit and a decision support unit into its structure. The modeling unit makes it possible to predict values of the controlled parameters under a transition mode of operation before they actually appear in the system as a result of the operator's actions. A mathematical model of the automatic control system under transitional operating modes has been built for this unit. In order to implement the decision support unit, a method has been devised to formalize the task of managing the power plant under transitional operating modes. The method essentially involves modeling a transitional operating regime, followed by an evaluation of the results based on regulatory requirements and an empirical criterion for assessing the quality of enabling the diesel generators to work in parallel. In addition, a method has been developed for the decision support unit to reduce the accident rate and improve performance with the help of a mathematical apparatus of fuzzy inference, fuzzy logic, and fuzzy sets. Transitional operating regimes resulting from actual erroneous operator actions during ship flights were investigated. As a result of using the proposed system, the power plant performance increases
Highlights
Modern ship’s power plants are multidimensional objects of control, whose complexity is constantly increasing
The method for improving performance and reducing accident rate by using a fuzzy logic apparatus involves the following: Step 1
The proposed model of the power plant automatic control system (ACS) makes it possible to change its structure in the process of modeling, which enables the calculation of power plant parameters under the transitional and dynamic modes
Summary
Modern ship’s power plants are multidimensional objects of control, whose complexity is constantly increasing. Given additional functions and tasks, the composition and structure of the ship’s power plants change. Analysis of marine accident statistics confirms the prevailing human impact on the safety of navigation. Significant attention to this issue led to the adoption in 2003 by the International Maritime Organization (IMO) of a key document (resolution A.947/23) entitled “Human Element Vision, Principles and Goals”. Despite the actions being taken to improve safety, namely, improving the onshore maintenance and training of crews, equipping the vessels with the advanced integrated energy complexes and installations, the accident rate of vessels continues to increase [1]. The topic of this study corresponds to the priority area of research “Information and Communication Technologies”, approved by the Law of Ukraine “On Priority Areas of Science and Technology”, as well as the provision of the Maritime Doctrine of Ukraine to 2035
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