The research in the dissertation work is aimed at solving scientific and applied problems on the operational determination of maneuvering parameters, during its execution, including curvilinear motion, to optimize its execution. This approach allows to achieve the optimal ratio between the dimensions of the voyage, the main size of the vessel, their energy and efficiency of means of control. Therefore, navigation systems and controls must be designed so that the information is processed automatically and issued to the operator in the form of knowledge sufficient for rapid decision-making.
The main need for research is the presence of requests for practice in determining the parameters of maneuvering during maritime operations in canals, fairways and in port and port waters:
- the width of the maneuvering offset along the magnitude of the abscissa of the pole of the determination of the pivot point (PP) on the straight sections of the path and when making turns;
- optimal use of tugs on the value of the abscissa of PP and
power of its main engine.
The main task of research is to develop methods for the rapid determination of maneuvering parameters during movement and their use to control the vessel in accordance with the algorithm of the process of performing a naval operation.
As a result of the analysis, the main task is structurally presented in the form of three auxiliary tasks: development of methods for determining the abscissa of the location of the PP and the functional diagram of the navigation device for its definition and visualization; analysis and development of methods
calculation of the width of the shunting shift and the layout of the navigation device of its calculation; improvement of the inverse method of development of the technological map of maneuvering at sea operations.
As a result of solving the main task through the implementation of auxiliary obtained scientific position: the safety of the maneuvering process is ensured by the use of operational methods for calculating the parameters of movement and control of the vessel by their value on the technological map of maneuvering in maritime operations.
The scientific position is substantiated by the following scientific results:
For the first time, a method was developed to determine the abscissa of the PP by tangential velocities of the limbs, which differs from the existing ones by the lack of data for calculating the abscissa of the PP coming from the existing navigation device - Doppler lag, and taking into account the flow parameters. experiment;
- for the first time a method was developed to determine the width of the shunting offset separately for rectilinear segments of the path and for curvilinear, which differs from the existing ones by using the abscissa value for calculations, including curvilinear segments, and automatic switching of calculations for rectilinear and curvilinear segments of the path;
- further developed the methodology of scenario planning of inverse traffic for navigation purposes at the entrance / exit of the port, which differs from the existing using a high-precision method of planning a given path by trajectory points in the form of a matrix of their coordinates and using the existing method of waypoints ;
- improved the method of determining the abscissa of the PP on the equal control forces, which differs from the existing ones taking into account only the lateral forces. To do this, the direction and magnitude of the control forces used are entered, the lateral components and their equivalent are determined, which allows to calculate the abscissa of the PP, the value of which is used to control the maneuver.
The scientific novelty of the obtained results is to develop a new way to determine the position of the PP on the values of existing navigation devices, which provides constant calculation and visualization of the position of the PP and determine the width of shunting displacement when moving on straight paths and when turning.
The practical significance of the obtained results is that algorithms, calculation schemes and techniques can be used to create new decision support systems using existing navigation devices, including a navigation system for non-shift control of the vessel.
The practical results of the dissertation research have been introduced into the research work of the Department of Ship Management, NU "OMA", into the research work at the Kherson State Maritime Academy.
Keywords: safe maneuvering of the vessel, turn pole abscissa, shunting width, curvilinear segments, decision support system, inverse method of mooring scenario planning.
