268results about "Movement controllers" patented technology

The invention provides a TMD lockout control method for motion suppression of a semi-submersible platform, and the method comprises the steps: carrying out the frequency domain decomposition of a random wave predicted by a target sea condition, obtaining the energy distribution of each frequency component, obtaining the equivalent amplitude of each frequency component according to the energy distribution, considering the amplitude response of the platform under the action of waves of different frequencies, and achieving the motion suppression of the semi-submersible platform. The method comprises the following steps of: calculating a weight ratio of platform motion response caused by each frequency component under the action of random waves by integrating three types of information, namely amplitude, amplitude response and motion suppression effect, and finally carrying out weighted combination on the locking time corresponding to each frequency component according to the weight ratio, so as to obtain the motion suppression effect of the platform. And the optimal locking control time suitable for the current random wave is obtained. According to the method, a high-complexity non-causal control command does not need to be deduced, control parameters can be updated in real time according to short-term sea condition changes, pitching response of a platform is effectively reduced, and comprehensive optimization control over multi-frequency waves is achieved.

A floating body for an offshore wind turbine includes: one first column; two second columns; two lower hulls connecting the first column to each of the second columns; and a beam member connecting the two lower hulls. The beam member is disposed within a height range between an upper surface and a lower surface of each lower hull.

The invention discloses a ship water gauge scale line fitting algorithm, and relates to the technical field of ship water gauge scale calculation, and the method comprises the steps: obtaining a ship water gauge region image through an image collection device to extract a measurement point coordinate, and building a mapping relation between a pixel position and a physical draft; a weighted least square method is adopted to perform nonlinear curve fitting, a weight coefficient is calculated based on a local neighborhood standard deviation, a polynomial order p is dynamically adjusted according to an adjusted decision coefficient, and the decision coefficient is iteratively optimized to improve the balance between amplitude and model complexity. And the system repeatedly corrects model parameters through a dynamic verification mechanism of the residual sum of squares and a preset threshold value, and finally an accurate water gauge scale fitting curve is generated. The method effectively solves the problems that traditional manual observation is prone to environmental interference and large in measurement error, high robustness is kept in a complex water area environment, and reliable data support can be provided for the fields of ship load evaluation, channel safety management and the like.

A vessel for transporting cargo by water comprises one or more propulsion devices with at least one air-breathing engine from the one or more propulsion devices disposed entirely above a surface of the water in a high-speed mode of operation. The least one air-breathing engine is configured to bleed airflow into a fluid circuit. The fluid circuit routes the bleed airflow to one or more fluid outlets disposed entirely below the surface of the water in the high-speed mode of operation. At least some of the one or more fluid outlets release the bleed airflow in the high-speed mode of operation generate a boundary layer along at least a portion of a hull of the vessel to reduce a skin friction drag thereof.

The invention belongs to the field of ship control, and provides a self-adaptive active stabilization method and system for a ship. The ship is configured to be provided with a plurality of water pressing plate executing mechanisms, each water pressing plate executing mechanism comprises a water pressing plate assembly and an executor connected with the water pressing plate assembly, and the method comprises the following steps that ship body attitude information of the ship is obtained; calculating a target moment according to the hull attitude information; generating an execution instruction corresponding to each actuator according to the target torque; and the executor responds to the execution instruction so as to drive the connected water pressing plate assembly to execute water pressing movement. According to the self-adaptive active stabilization method and system for the ship, the ship can be effectively controlled to reduce shaking, and the navigation stability, comfort and safety of the ship are improved.

The invention provides a ship liquid level intelligent monitoring system. The ship liquid level intelligent monitoring system comprises a data acquisition layer, a data processing layer and an application layer, the data acquisition layer comprises an inertial measurement unit and a liquid level measurement unit, the inertial measurement unit is used for measuring ship attitude information, and the liquid level measurement unit is used for acquiring original liquid level information in a liquid tank; the data processing layer comprises a data preprocessing module, an intelligent liquid level correction module, a model training updating module and a local server, the data preprocessing module is used for preprocessing information, and the intelligent liquid level correction module can calculate static liquid level information according to the preprocessed information; the model training and updating module can utilize historical navigation data stored in the local database to train the liquid level dynamic correction model; the application layer is used for receiving and displaying the static liquid level information; according to the invention, the finally output liquid level value is close to the real static liquid level, and the measurement precision and reliability are greatly improved.

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

The present application relates to a floating support foundation, a wind turbine, and a control method. The floating support foundation includes: a floating main body including n floating columns spaced apart around a first axis and connecting bodies connecting every adjacent two of the floating columns, n≥3, the n floating columns including one first floating column and n-1 second floating columns, and the first floating column being used for supporting the tower; stabilization devices, each of the second floating columns being connected to a respective one of the stabilization devices, the stabilization device including a drive assembly, a first impeller, and a base connected to the second floating column, the base having an inner cavity, and a first opening and a second opening communicating with the inner cavity, the first opening, the inner cavity, and the second opening forming a flow channel for the seawater, the first impeller being disposed in the inner cavity, the drive assembly driving the first impeller to rotate and causing the seawater to flow within the flow channel, so as to adjust the second floating column connected to the stabilization device to float upward or sink downward. The present application has a simple structure and relatively low cost.

The embodiment of the invention discloses a ship bilge keel system and a ship. The bilge keel system comprises a bilge keel cabin, a bilge keel body, a hydraulic automatic control unit, a hydraulic jack set, a connecting toggle plate, a rotating shaft and a sealing limiting unit. The bilge keel cabin is arranged at the joint of a ship bottom plate and a broadside, a bilge keel body is of a triangular prism-shaped structure defined by three rows of coamings and is provided with a first limiting connecting piece and a second limiting connecting piece, and the broadside coaming is in an arc shape along a broadside outer plate and corresponds to an opening of the bilge keel in shape. One side of the side coaming is hinged to a bilge keel opening through a rotary hinge, and the hydraulic automatic control unit can control the hydraulic jack set to stretch out and draw back so as to drive the bilge keel body to rotate along the rotary hinge through the rotary shaft, so that the first limiting connecting piece or the second limiting connecting piece is in matched sealing connection with the sealing limiting unit. The retractable design of the bilge keel is achieved, and the sailing resistance is reduced by recovering the bilge keel.

The utility model belongs to ship equipment technical field discloses a kind of wave compression device and boat. Wave compression device includes hinged six-bar mechanism, spoiler piece and rotary drive part, rotary drive part drives spoiler piece rotation by hinged six-bar mechanism, to make spoiler piece have the working position of extension into water. The utility model is driven by first connecting rod continuous rotation, by the hinged transmission of fourth connecting rod and spoiler piece, the swing angle of spoiler piece is naturally limited by the rotation range of first connecting rod, without setting rigid stroke end, allowing rotary drive part continuous rotation, without reversing, avoid the "overshoot phenomenon" of traditional reciprocating motion, eliminate the vibration, wear and tear and control deviation problem caused by overshoot fundamentally.

The invention relates to a ship water gauge measurement method, a ship water gauge measurement system and a medium, and the method comprises the steps: collecting a video of a ship entering a port water area, and carrying out the target ship recognition detection of the ship video, so as to obtain a target ship cutting image frame sequence entering a preset region; performing water gauge area positioning detection on each frame of image in the target ship cutting image frame sequence to obtain a water gauge area image of the corresponding frame, and performing multi-target element synchronous detection on each water gauge area image to obtain a multi-target element detection result of the corresponding water gauge area image; and performing fusion processing on the multi-target element detection result of each water gauge area image to obtain a ship water gauge measurement result of the corresponding target ship, and finally processing all the obtained ship water gauge measurement results to obtain a current ship water gauge measurement result of the target ship. In this way, automatic and continuous measurement of the water gauge of the ship driving into the port water area is achieved, and the ship water gauge measurement precision and accuracy are improved.

A system for controlling a marine vessel comprises an input device for inputting an operator command, a sensor which senses and signals an engine function variable or a vessel dynamic variable, and a first structural element and a second structural element. The first structural element and the second structural element each control speed or direction of motion of the marine vessel, and the first structural element and the second structural element each affect the marine vessel dynamic variable. There is a controller which receives the operator command and the engine function variable or the vessel dynamic variable. The controller moves the first structural element and the second structural element based on the engine function variable or the vessel dynamic variable, after receiving the single operator command.

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.

This invention discloses a semi-submersible offshore platform with movable wave-breaking plates, belonging to the field of floating wind turbine turbulence. It comprises multiple platform components connected by trusses. Each platform component includes a column with a vertically oriented axis. Several movable wave-breaking plates are provided on the outer wall of the column, spirally distributed around the column's axis. Each movable wave-breaking plate includes an anti-roll plate fixed to the column's peripheral wall. A hinge is located at the lower end of the anti-roll plate; one side of the hinge is fixedly connected to the anti-roll plate, and the other side is connected to an arc-shaped cover plate. The hinge's rotation axis is horizontally oriented. The side of the arc-shaped cover plate facing the column's outer wall bulges upwards, allowing it to rotate around the hinge's axis under buoyancy. This invention can reduce vortex-induced motion and decrease platform oscillation.

This invention discloses a flexible, wave-resistant, floating photovoltaic system, including a photovoltaic platform frame. A photovoltaic power generation platform is located on the upper side of the photovoltaic platform frame, and a central float is coaxially positioned below the photovoltaic platform frame. The central float is fixedly connected to the photovoltaic platform frame via a float support. Around the central float, several arc-shaped attitude adjustment bodies are arranged in a circular array. Each arc-shaped attitude adjustment body has two ends connected to coaxial rotating shafts along its length, allowing it to rotate around the axes of its two ends. In addition to being wave-resistant, it also has a light-tracking function.

The invention relates to the field of rescue equipment, in particular to a water surface unmanned rescue device with high stability, full-time sensing capability and accurate active rescue function, which comprises a hull assembly, a sensing and navigation system, a power propulsion assembly, a rescue execution assembly and a communication module, the ship body assembly comprises a main floating body and auxiliary floating barrels arranged on the two sides of the main floating body, a sealed cabin is arranged in the main floating body, a battery pack and a main control unit are arranged in the sealed cabin, the gravity center position of the ship body assembly is lower than the buoyancy center position, and a balancing weight is arranged at the top of the main floating body through an adjusting mechanism. When the overturning angle of the ship body assembly exceeds a preset threshold value, restoring torque is generated through gravitational torque so as to achieve automatic righting, and the power propelling assembly is arranged on the ship body assembly and used for driving the ship body assembly to move on the water surface.

A motion absorbing system and method for a structure includes the coupling of a container to a structure. The container has a liquid disposed therein wherein a ullage is defined above a surface of the liquid. An elastic element is positioned in the liquid. The elastic element has a natural frequency tuned to damp motion of the liquid.

The utility model relates to the technical field of ship stabilization, and discloses a rotating wheel type small ship stabilization device which comprises a ship body provided with a ship bottom bin, and further comprises a momentum wheel rotationally installed at the position vertically above the gravity center of the ship body; the motor is fixedly mounted in the mounting seat and is used for driving the momentum wheel to rotate; and a main control chip and an attitude sensor are arranged in the electric control box. According to the rotating wheel type small ship stabilization device, stabilization control is achieved by controlling movement of the momentum wheel, and compared with a traditional hydraulic cylinder, the rotating wheel type small ship stabilization device has the advantages of being higher in cost performance, safe and reliable in performance, easy to maintain and manage and the like, and has wider market application prospects.

The purpose of the present disclosure is to set the initial information of the anchoring object (target) of a ship with high accuracy. A ship navigation assistance device according to the present disclosure includes a provisional initial information setting module, a measurement module and a processing module. The provisional initial information setting module may accept a specification of provisional initial information for characteristic information on an object to which a ship anchors or docks (docks to a pier). The measurement module may acquire measurement information on an object using a ranging result of an area including the object.

To provide a ship capable of holding at least a part of a deck in a target height position without using a friction force sensor.SOLUTION: A ship comprises a hull, a hydraulic cylinder, a deck connected via the hull and the hydraulic cylinder, a hydraulic pump constituting a closed circuit through connection to the hydraulic cylinder, a supporting capacity calculation unit to calculate the supporting capacity to support the deck using the hydraulic cylinder, and a flow control unit to adjust a flow rate of the hydraulic oil flowing in the circuit by controlling the hydraulic pump based on the supporting capacity. The flow control unit controls the flow rate so that the supporting capacity of the hydraulic cylinder approaches the preset standard weight as weight supported by the hydraulic cylinder.SELECTED DRAWING: Figure 9

The present application relates to a wind turbine foundation, a wind turbine generator system and a control method. The wind turbine foundation is capable of being arranged in seawater and configured to support a tower, wherein the wind turbine foundation includes: floating bodies, wherein a number of the floating bodies is n, the floating bodies are arranged at intervals from each other, and lines connecting centers of the floating bodies form a polygon as a whole, where n≥3; connecting bodies, wherein a corresponding one of the connecting bodies is connected between every two adjacent floating bodies; wherein each of the floating bodies has a static chamber and a dynamic chamber that are independently arranged, a first medium is enclosed within the static chamber, each of the floating bodies is provided with a first opening connected to the dynamic chamber and a first control valve, and the first control valve controls opening and closing of the first opening to adjust a volume of the seawater entering the dynamic chamber. According to the wind turbine foundation, wind turbine generator system and control method provided in the embodiments of the present application, the wind turbine foundation has a fast response speed and a good stability effect.

A method of wake surfing utilizes a marine vessel having a first propulsion device and a second propulsion device that produce thrust having thrust axes that are offset from one another or not parallel. A first propulsion device may have a thrust axis that is controlled to a first thrust offset angle with respect to the second thrust axis. This offset angle may direct a flow of water from the first propulsion device into a flow of water produced from the second propulsion device and thereby produce an effective wake surfing wake. The first thrust axis may be along a horizontal and / or vertical plane with respect to second thrust axis. One or more deflectors may be coupled with the boat to aid in formation of the wake surfing wake. A controller may control the thrust axis and / or the amount of thrust produced by the propulsion devices, independently.

The application relates to the technical field of ship engineering, and discloses a wave-blocking water-tight structure for a ship, the ship comprising a bow house deck, the bow house deck being provided with deck machinery, and comprising the following components: a wall plate assembly, which is installed on the bow house deck; and a wave-blocking shell, which is installed on the bow house deck, the rear end of the wave-blocking shell being connected to the wall plate assembly, the wave-blocking shell, the wall plate assembly and the bow house deck jointly defining a protection cavity, and the deck machinery being accommodated in the protection cavity. The wave-blocking water-tight structure for the ship can effectively improve the sealing performance of the bow house deck area, realize all-around protection of the deck machinery, and optimize the buoyancy distribution and the navigation stability of the ship.

The invention discloses an image recognition intelligent sensing type full-cavity magneto-rheological floating fan stabilization system and method. The system comprises an environment intelligent sensing module, a digital twinning module, a full-cavity magneto-rheological execution module and a central control module. The environment intelligent sensing module collects a wave image in real time and outputs a sea wave period; the digital twin module reconstructs a six-degree-of-freedom motion state of the variable floating type fan platform and a three-dimensional scene view of surrounding sea waves; the full-cavity magneto-rheological execution module moves and excites according to the sea wave period, the acting area and intensity of a magnetic field are adjusted, the chaining degree of magneto-rheological fluid is changed, and damping stepless adjustment is achieved. The central control module generates a corresponding control instruction and sends the control instruction to the full-cavity magneto-rheological execution module; according to the method, digital and physical double reproduction of floating type fan platform motion and the sea wave environment is achieved, self-adaptive damping adjustment can be accurately and rapidly conducted on broadband sea waves, and the power generation efficiency and platform safety are remarkably improved.

Disclosed in the present invention is a hull form of a shallow-draft anti-rolling transport vessel. The hull form comprises a stern section, a cargo hold section and a bow section which are connected in sequence, wherein the length of the stern section does not exceed 30% of the overall length of a vessel; the length of the bow section does not exceed 25% of the overall length of the vessel; the stern section uses a multi-hull structure; the cargo hold section uses a monohull structure; the bottom of the cargo hold section is of a double-bottom structure; the bow section uses a catamaran structure; side flare structures are arranged at both sides of the stern section and the bow section; the stern section, the cargo hold section and the bow section share a main deck; and the main deck is a flat grillage. In the present invention, by means of reducing the draft, a wetted surface area and a wave height during high-speed navigation are reduced, thereby greatly reducing wave-making resistance; and the stability and seakeeping performance of the vessel under severe sea conditions are also taken into account.

This invention relates to the field of marine renewable energy development technology, and discloses an anti-rolling wave fusion device and control method. The anti-rolling wave fusion device includes a wave energy platform, a floating wind turbine, a linkage mechanism, and a single-point mooring mechanism. One end of the wave energy platform is connected to a wave-absorbing float for capturing wave energy and attenuating the vibration force of the waves behind it. The floating wind turbine is located on the side of the wave-absorbing float away from the waves. The linkage mechanism is located between the wave energy platform and the floating wind turbine, and includes two parallel supporting trusses. The two ends of the supporting trusses are respectively hinged to the wave energy platform and the floating wind turbine through a rotating shaft, so that the floating wind turbine and the wave energy platform can move synchronously in the vertical plane. One end of the single-point mooring mechanism is located on the side of the wave energy platform away from the floating wind turbine, and the other end is used to connect to the seabed and form a mooring point. The wave energy platform rotates circumferentially around the mooring point through the single-point mooring mechanism, thereby improving the stability of the floating wind turbine.

The embodiment of the invention provides a fin stabilizer, and belongs to the field of ship stabilization devices, the fin stabilizer comprises a fin blade made of a flexible material, and at least one hollow cavity is formed in the fin blade; when the fin blades are in the use state, the hollow cavities of the fin blades are filled with fluid through the fluid filling device, so that the fin blades are unfolded; when the fins are not used, fluid in the hollow cavity is discharged through the fluid discharging device, and after the fluid is discharged, the fins can be folded, shrunk and stored in the ship body. And the fin rotating arm is driven by the fin rotating power device to stretch out or retract the fin blades in the unused state into the ship body. The effects that the weight is reduced, and a large amount of occupied ship storage space is reduced can be achieved.

The invention discloses a quick-response universal flexible auxiliary towing device which is applied to a floating fan towing system, the towing system comprises a floating fan foundation, a floating fan and a towing boat, the fan foundation comprises a plurality of wind power foundation piles, and the adjacent wind power foundation piles are fixedly connected through connecting rods. Through closed-loop control of real-time monitoring of the attitude sensing assembly, accurate instructions of the control system and dynamic adjustment of the power assembly, technical spanning from passive assistance to active stabilization is achieved, attitude changes caused by wind waves and flows can be quickly responded, targeted restoring force is provided, the risk that a floating type draught fan foundation drastically deflects and overturns is effectively avoided, and the service life of the floating type draught fan foundation is prolonged. Ballasting adjustment does not need to be carried out at a machine location point, and the construction difficulty is remarkably reduced.

The invention relates to an energy storage system (100) for at least one electrical consumer (106) in the electrical system (142) of a watercraft (108), wherein the energy storage system (100) comprises at least one inverter (140) connected to the electrical system (142) for supplying power to the consumer (106). An energy storage device (160) is associated with the at least one inverter (140). According to the invention, the energy storage device (160) comprises at least one energy converter (162) and at least one storage unit (170) associated therewith, wherein the energy converter (162) is configured to enable a bidirectional energy flow (180, 182), thereby allowing the feeding (182) of excess electrical energy back into the electrical system (142) of the watercraft.This makes it possible to easily operate consumers (106) that cause high electrical load peaks, such as a stabilization device (120), a rudder system (128) or the like, on an on-board electrical system (142) of a watercraft (108).