16 results about "Seakeeping" patented technology

The invention belongs to the technical field of ship and ocean engineering, and discloses a ship seakeeping intelligent forecasting method and system based on a physical information neural network. According to the method, a CFD-RAO method is combined with PINNs, and rapid and high-precision prediction of ship seakeeping is realized by constructing a coupling model of a physical equation and a neural network loss function. According to the invention, rapid and high-precision prediction of ship seakeeping is realized. The method not only can effectively cope with multi-degree-of-freedom coupling motion under complex sea conditions, but also has high real-time performance and adaptability, and provides more scientific and reliable technical support for ship design and navigation safety.

The invention provides a parallel hydraulic interconnection damping catamaran which comprises an upper cabin, a hydraulic interconnection suspension and a floating body which are sequentially arranged from top to bottom, and the whole structure is symmetrically distributed in the front view and is trapezoidal in the left view. The hydraulic interconnection suspension forms two side waists of a trapezoid, the upper cabin body is connected with the transverse rocker arm through the hydraulic cylinder set, the front transverse rocker arm is hinged to the longitudinal rocker arm through the radial spherical plain bearing, the longitudinal rocker arm is hinged to the floating body through the radial spherical plain bearing, and the rear transverse rocker arm is directly connected with the floating body. The front hydraulic cylinder set and the rear hydraulic cylinder set stretch out and draw back to achieve pitching motion, the left hydraulic cylinder set and the right hydraulic cylinder set stretch out and draw back alternately to drive the floating bodies on the two sides to move in a staggered mode, heeling of the ship body is achieved, and therefore three-freedom-degree vibration reduction compensation of heaving, pitching and heeling is jointly completed. Through the eight-cylinder interconnected hydraulic loop design and the special connection pair layout, wave multi-degree-of-freedom impact is effectively decoupled, the seakeeping and stability of the ship are remarkably improved, and the device is suitable for special rescue scenes such as shallow water areas and complex channels.

The invention relates to the technical field of ship intelligent navigation and energy management, in particular to a two-stage meteorological route optimization method based on a ship seakeeping model. The method comprises the following steps: constructing a three-degree-of-freedom ship seakeeping model, comprehensively considering the motion characteristics of surging, swaying and yawing, carrying out discretization processing on meteorological parameters and ship motion states, generating a corresponding state node set and a meteorological state set, calculating motion primitive sets under different meteorological conditions, and constructing a state grid space, so as to obtain a seakeeping state of the ship. Optimal path planning is carried out through a heuristic search algorithm, and a navigation path with the lowest energy consumption is obtained. Further, segmentation and speed optimization are performed on the path segment, and the optimal propulsive force and speed profile are output in combination with acceleration constraint. According to the method, collaborative optimization of route planning and dynamic performance is realized, and route optimization calculation efficiency and intelligence and practicability of route planning are remarkably improved.

This invention provides a collaborative optimization method for the main hydraulic cylinder system of a super-large piling vessel adapted for deep-sea applications, belonging to the field of marine engineering equipment technology. This invention constructs a five-dimensional collaborative system encompassing navigation, shallow water, energy conservation, seakeeping, and safety, including: multi-scenario requirement analysis; navigation-operational height collaboration, enabling rapid folding of the piling frame via quick-change interfaces; shallow water-buoyancy adaptation collaboration, linking the buoyancy tank to adjust draft and optimize hydraulic cylinder thrust; power grid-hydraulic cylinder energy efficiency collaboration, maintaining the main engine's economical load through energy storage regulation; seakeeping-attitude stability collaboration, linking anti-roll tanks and dampers to suppress roll; safety-lifespan early warning collaboration, predicting component lifespan based on digital twins; and full-condition benefit assessment and parameter iteration. This invention achieves dynamic linkage between the main hydraulic cylinder and various subsystems, solving the pain points of poor adaptability and insufficient collaboration in traditional equipment across all scenarios, significantly improving operational efficiency, energy conservation, and safety.

The invention provides a method for designing the main scale of a large seakeeping maneuverability comprehensive pool, aiming at the problem that the main scale of a traditional test pool cannot be accurately determined. Structurally, the test pool adopts a rectangular layout, a wave making device and a wave absorbing device which are opposite to each other are respectively arranged on long and short sides, and a trailer assembly comprising a main trailer and an auxiliary trailer is also arranged. According to the method, the main scale is determined through different design modules; the length design module superposes multiple sections of lengths to determine the minimum length; the width design module takes the maximum width value required by the seakeeping and maneuverability test; the depth design module determines the minimum depth according to a wave attenuation rule and the like. According to the method, various test requirements are comprehensively considered, the main scale can be accurately determined, sufficient generation and absorption of waves are ensured, the test operation is flexible, reliable conditions are provided for ship model comprehensive tests, and the test accuracy, reliability and efficiency are improved.

The invention relates to the technical field of ship engineering, in particular to a method for predicting the performance of a real ship by utilizing a ship model test, which comprises the following steps of: S1, designing and manufacturing a model; s2, resistance testing; s3, carrying out seakeeping test; s4, testing the maneuverability; the ship initial model framework is constructed according to the size of the ship body of the actual ship, the ship initial model framework is filled to obtain the ship initial model, and then the ship model is obtained by adjusting the balance of the ship initial model. The comprehensive performance evaluation coefficient of the ship model is obtained according to the resistance, seakeeping and maneuverability analysis of the ship model, the comprehensive performance evaluation of the ship model is fed back, the actual situation of the ship can be accurately simulated, potential problems can be found in advance, targeted improvement can be conducted, and the performance of the ship can be optimized.

The invention relates to the field of ship form optimization, in particular to a ship form comprehensive optimization method, which comprises the following steps: S1, setting constraint conditions; s2, designing a deformation control point and a deformation amplitude range thereof; s3, constructing a genetic algorithm and setting genetic algorithm parameters; s4, calculating still water resistance of the individuals and calculating fitness; s5, judging whether the maximum algebra of the genetic algorithm is reached or not; s6, selecting and copying individuals with high fitness; s7, carrying out crossover and variation on the individuals with high fitness, and returning to the step S4; s8, ending the genetic algorithm, and outputting no less than two still water resistance optimization schemes; s9, calculating the wave increase resistance of the still water resistance optimization scheme by using a slicing method; and S10, selecting a scheme which most meets the requirements of a ship owner as an optimal scheme, and calculating a corresponding optimal ship type through an FFD method. According to the method, the rapidity and seakeeping of the optimized ship are considered, and the calculation amount is reduced.

This invention relates to the field of ship hull optimization, specifically to a comprehensive ship hull optimization method, comprising: S1, setting constraints; S2, designing deformation control points and their deformation ranges; S3, constructing a genetic algorithm and setting its parameters; S4, calculating the hydrostatic resistance and fitness of individuals; S5, determining whether the maximum number of generations of the genetic algorithm has been reached; S6, selecting and replicating individuals with high fitness; S7, performing crossover and mutation on individuals with high fitness, and returning to S4; S8, terminating the genetic algorithm and outputting at least two hydrostatic resistance optimization schemes; S9, using the slicing method to calculate the wave resistance increase of the hydrostatic resistance optimization schemes; S10, selecting the scheme that best meets the shipowner's needs as the optimal scheme, and calculating the corresponding optimal ship hull hull using the FFD method. This invention achieves a balance between optimizing the speed and seakeeping of ships while reducing computational load.

The utility model belongs to the technical field of wave absorbing devices, and particularly discloses a wave absorbing supporting structure of a large-scale seakeeping maneuverability comprehensive pool, which comprises a mounting plate, a supporting fixing shaft and a limiting connecting shaft, mounting anchor cables penetrate through the fixing anchor holes to be fixed in the inner wall of the pool, cement filling layers are arranged in the fixing anchor holes, and the mounting plates are fixed to the inner wall of the pool; the wave absorbing bank body is movably connected to the mounting plate through the limiting connecting shaft, and when the wave absorbing bank body floats up and down or floats in a reciprocating mode, the limiting connecting shaft moves relatively along the long penetrating groove along with the wave absorbing bank body. Meanwhile, the wave absorbing bank body is further stabilized through a supporting fixing shaft, so that the wave absorbing bank body is stably connected with the corresponding mounting plate, when the wave absorbing bank body floats, the bottom of the supporting fixing shaft drives a sliding block to move on a sliding long groove, and the top of the supporting fixing shaft is limited by a limiting disc to slide in an embedded long groove; through the integral movable supporting structure, the stability of the wave absorbing device is guaranteed, and the wave absorbing effect is not affected.

The application discloses a kind of unmanned ship cluster design methods of convergence, comprising the following steps: step 1, with the purpose of reducing total resistance and improving seakeeping when unmanned ship cluster is navigated in formation combination mode, design ship type;Step 2, design the connecting device of unmanned ship cluster;Step 3, design parallel type modular ship micro-grid;Step 4, design multi-boat power system and dynamics model;Step 5, design the overall tracking control strategy of unmanned ship cluster.The application proposes new type splicing drag reduction ship type, hull power integrated connecting device and other key innovations, and demonstrates and verifies the functions such as autonomous splicing, water patrol, target trapping of unmanned ship cluster through ship model test.

The utility model provides a wind, light and wave energy comprehensive offshore power generation platform, which comprises a floating platform, a mooring system, a wind power generation module, an oscillating floater type wave energy power generation module and a photovoltaic power generation module, the floating platform is of a circular structure, a groove cabin is arranged in the middle of the top of the floating platform, and the wind power generation module is centrally erected on the floating platform; the oscillating floater type wave energy power generation module is arranged in the middle under the floating platform, and solar photovoltaic panels of the photovoltaic power generation module are uniformly laid around the center of the floating platform; comprehensive, efficient, reliable and stable utilization of multi-energy complementation of offshore wind energy, wave energy and solar energy is achieved; the impact load of waves on the platform is reduced; wind direction limitation is broken through, and aerial work requirements are reduced; the rolling and pitching resistance is improved, the seakeeping performance of the floating platform is improved, and the overturning resistance is improved; the seakeeping performance of the platform and the safety and self-storage performance under the extreme storm condition are improved, the utilization rate of offshore renewable energy sources is increased, and the offshore operation risk and the installation cost are reduced.

The ship form comprises a stern, a cargo hold section and a bow which are connected in sequence, the length of the stern does not exceed 30% of the length of the whole ship, the length of the bow does not exceed 25% of the length of the whole ship, the stern is of a multi-hull ship type structure, the cargo hold section is of a single-hull ship type structure, and the bottom of the cargo hold section is of a double-layer bottom structure. The ship body is of a double-body ship type structure, the ship body and the two sides of the ship body are each provided with a broadside outward floating structure, the ship body, the cargo hold section and the ship body share one layer of main deck, and the main deck is a plane plate frame. According to the method, the wet surface area and the height of the wave-making wave in the high-speed sailing process are reduced by reducing the draft, so that the wave-making resistance is greatly reduced, and meanwhile, the stability and seakeeping of the ship under the severe sea condition are also considered.

This invention discloses a multi-industry integrated floating equipment based on multi-energy complementarity, comprising a floating foundation, a large-megawatt horizontal-axis wind turbine generator, a tower, solar photovoltaic panels, an oscillating float-type wave energy device, aquaculture cages, production and living facilities, and a mooring system. The floating foundation supports the superstructure, and the large-megawatt horizontal-axis wind turbine generator is offset at the midpoint of the short side corresponding to the bow of the floating foundation via the tower. The solar photovoltaic panels are arranged on the upper deck. The oscillating float-type wave energy device is deployed between the buoy and the main beam and located around the aquaculture cages. The aquaculture cages are located below the lower deck, forming at least one space in the hollow area of ​​the floating foundation for aquaculture. The production and living facilities are located on the lower deck. The mooring system connects the floating equipment to the seabed. This invention has good seakeeping, high safety, good economy, a wide range of adaptable water depths, and a large effective load. It can utilize multi-energy complementary power generation for deep-sea aquaculture, decomposition reactions, and chemical energy storage.

The utility model relates to the field of ship energy efficiency control, and provides a free self-propelled ship model motion distributed control device, which comprises a trailer end comprising a power supply module, a ship model locking device and a sensing module for monitoring the state of a ship model; the power supply module is used for supplying power to the ship model locking device, the rudder driver and the paddle driver; the ship model locking device comprises a locking cantilever connected with the ship model body, a locking motor for controlling the locking cantilever, and a locking device driver for controlling the locking motor; the ship model end comprises a ship model body, a rudder driver and a paddle driver, wherein the rudder driver and the paddle driver control the ship model body. The ship model body comprises a plurality of rudders and propellers. The method is used for controlling the navigation state of the free self-propelled ship model in the seakeeping test of the free self-propelled ship model and simulating the motion of the ship model under the real sea condition.

The invention relates to the technical field of wave absorbing devices, in particular to a long-side lifting wave absorbing device of a large seakeeping and maneuverability comprehensive pool, which comprises a wave absorbing bank body, a sliding block and sliding groove system and a driving mechanism, two corresponding fixed hinge points are arranged at the lower end, close to the side edge of the pool wall, of the wave absorbing bank body, bracket structures are arranged below the fixed hinge points, and the bracket structures are fixed to the upper portion of the pool wall; the lower end of the supporting frame is provided with three evenly-distributed connectors, the connectors on the two sides of the lower end of the supporting frame are connected with the sliding block and sliding groove system, and the connector in the center of the lower end of the supporting frame is connected with the driving mechanism. When the long side of the pool generates waves or oblique waves are generated at the same time on the two sides, the long-side lifting wave absorbing device swings to the position near the water surface, and the pool wave absorbing requirement is met; and when the short side of the pool generates waves, the long-side lifting wave absorbing device swings to the vertical direction, so that the bad influence of the long-side lifting wave absorbing device on wave propagation is avoided.

The invention discloses a ship form design method and system for a high-performance large-load river-sea direct ship, and relates to the field of ship design, and the method comprises the steps: obtaining characteristic parameters corresponding to a mother ship form of the river-sea direct ship; the characteristic parameters are ship type parameters influencing ship type seakeeping and maneuverability; determining constraint conditions based on the characteristic parameters; generating a plurality of groups of feature parameter schemes based on the constraint conditions; constructing a ship type geometric model according to the multiple groups of characteristic parameter schemes, and performing numerical simulation to obtain related parameter data about river-sea direct maneuverability and seakeeping; and according to the related parameter data, based on a maneuverability prediction model and a seakeeping prediction model, a multi-objective optimization algorithm is used for optimization, and ship type parameters of the optimal river-river-sea direct ship type are obtained. According to the method, the contradiction between seakeeping and maneuverability can be effectively balanced, and the engineering adaptability is improved.