482results about "Vessel movement reduction by foils" patented technology

A method for controlling a marine vessel having two or more seats. The method includes determining which of the seats are occupied seats and adjusting a control setting for controlling the marine vessel based on which of the seats are the occupied seats to provide an adjusted control setting. The method further provides for controlling the marine vessel based on the adjusted control setting so as to reduce an effect of which of the plurality of seats are the occupied seats on at least one of a pitch and a roll of the marine vessel when underway.

The invention discloses a hydrofoil ship and a hydrofoil ship control method.The hydrofoil ship comprises a ship body, a hydrofoil mechanism and a propelling mechanism, the propelling mechanism is used for providing power for the ship body, the hydrofoil mechanism further comprises a supporting column, a telescopic driving part arranged above the supporting column, a main wing and a flap, and the main wing and the flap are arranged below the supporting column; the main wing is fixedly connected with the supporting column and symmetrically extends out of the two sides of the supporting column, the telescopic driving part is in transmission connection with the flap, one side of the flap is hinged to the main wing, and the telescopic driving part can drive the flap to swing around the main wing so as to change the posture and / or position of the ship body. The hydrofoil ship control method is used for controlling the hydrofoil ship. By means of the method, the ship posture can be rapidly adjusted, and the ship body can be rapidly balanced.

A vessel braking control system for a marine vessel that utilizes one or more of the vessel's features and effectors to increase the drag on the vessel both through increased drag on the features and effectors themselves and by creating a downward force on the vessel as a whole, increasing the wetted hull area and increasing hull drag thereby; the control system operates to place the features and effectors in a braking state through rotation relative to the vessel's direction of travel and relative to the water's surface, and may automatically return the features and effectors to their normal operating state upon the vessel's reaching a detected, predetermined speed.

An electrically driven control method for a fin stabilizer. The control method comprises the following steps: performing signal isolation processing on a ship attitude signal detected by a sensor, then inputting the ship attitude signal into a PLC, subjecting the ship attitude signal to filtering processing followed by a fractional-order PID operation, then passing the ship attitude signal through a speed adjustment program and a wave-level adjustment program, finally sending a generated anti-rolling fin rotation angle signal to an electric motor drive to control a fin stabilizer to rotate, detecting position information of the rotated fin stabilizer by means of the sensor, generating a mechanical fin rotation angle signal, and feeding the mechanical fin rotation angle signal back to the PLC, so as to further control the fin stabilizer to rotate. The control method further comprises: processing a rolling signal generated inside the PLC, passing the rolling signal through the speed adjustment program, then generating a rolling fin rotation angle signal, and inputting the rolling fin rotation angle signal into the electric motor drive to control the fin stabilizer to rotate.

The invention provides a ship path tracking and rolling comprehensive control method and device based on a straight-wing propeller, belongs to the technical field of ship motion control, and solves the technical problem that path tracking and rolling control precision and efficiency of a ship are insufficient due to environmental disturbance. Constructing a four-degree-of-freedom ship motion equation, constructing a four-degree-of-freedom ship motion model with interference and measurement noise, reconstructing a ship motion state by adopting a Kalman filter, calculating a path tracking error by utilizing a self-adaptive sight guidance algorithm, and generating an expected course angle; determining a longitudinal thrust, a rolling stabilizing moment and a course control thrust; and the revolution speed and the rotation swing angle of the straight wing propeller are optimized, and the rotation swing angle is recalculated. The method is suitable for the ship provided with the straight-wing propeller, and high-precision path tracking and efficient rolling stabilization are achieved by controlling the revolution speed and the swing angle of the propeller.

A rotary actuator includes a housing having a first end and a second end spaced from the first end along an axis. The housing defines a cavity extending circumferentially about the axis. An output shaft is arranged coaxially with the axis. The output shaft extends outwardly from the cavity through the first end. A drive system is disposed in the cavity and axially spaced from the first end. A gearbox is disposed in the cavity between the output shaft and the drive system. The gearbox is coupled to the drive system and the output shaft. A rotational controller is disposed in the cavity between the drive system and the second end. The rotational controller is configured to actuate the drive system to adjust an angular position of the output shaft.

The invention discloses an unmanned ship for three-dimensional sonar scanning measurement of bridge scouring and underwater diseases and a measurement method of the unmanned ship. A measurement device comprises a ship body and sonar arranged on the ship body. The control assembly is installed on the central axis of the bottom of the ship body, the gyroscope is locked in the preset scanning direction of the sonar, and the inertial navigation system is used for recording ship traveling data of the ship body. The control assembly comprises a first holder for controlling the sonar to rotate in the ship traveling direction, a second holder for controlling the sonar to rotate in the direction perpendicular to the ship traveling direction, and a third holder for controlling the sonar to rotate in the direction perpendicular to the plane formed by the rotation directions of the first holder and the second holder. The sonar is regulated and controlled through the control assembly, so that the scanning measurement operation posture of the sonar is more flexible, meanwhile, the gyroscope and the inertial navigation system are used as the basis for regulating and controlling the posture of the sonar, the sonar can be adjusted to be in the preset scanning direction all the time, and the underwater structure of the bridge and the scoured terrain can be comprehensively covered.

A device for modifying a wake of a marine vessel having a hull. The hull extends between a bow and a transom in a longitudinal direction and between sides in a lateral direction perpendicular to the longitudinal direction. The sides each extend between a top and a bottom in a vertical direction that is perpendicular to the longitudinal direction and to the lateral direction. A panel is movably coupled to one of the sides of the hull and movable into and between a stowed position and a deployed position. In the stowed position, the panel extends along the one of the sides of the hull. The panel moves laterally outwardly away from the one of the sides of the hull when moving toward the deployed position. Moving the panel from the stowed position to the deployed position causes the panel to modify the wake of the marine vessel.

The invention provides a ship active stabilization control method and system, and relates to the field of ships. The ship active stabilization control system comprises a stabilization execution mechanism which comprises an upper platform constructed according to a ship body of a ship and a lower platform constructed according to multiple sets of water pressing plate execution mechanisms, and the multiple sets of water pressing plate execution mechanisms are arranged at any positions below waterlines of the two sides of the ship correspondingly; each water pressing plate executing mechanism comprises a water pressing plate assembly and a driving cylinder connected with the water pressing plate assembly; the data acquisition unit is configured to acquire ship body attitude and motion state information and environment data of the ship; the stabilization controller is configured to calculate and generate correction torque according to the parallel robot kinematic mechanics mechanism model, the ship posture and motion state information and the environment data, and distribute the correction torque to an execution instruction corresponding to each driving cylinder; and the driving cylinders drive the corresponding water pressing plate assemblies to execute water pressing movement or return movement according to the execution instructions.

The invention discloses a wind-solar hybrid drive ocean unmanned ship platform and a design method thereof, and relates to the technical field of unmanned ships, the wind-solar hybrid drive ocean unmanned ship platform comprises a platform body module, a power propulsion module, an energy supply module, an environment sensing module and a control module, the platform body module comprises an unmanned ship main body of a strip-shaped single ship structure and stabilization hydrofoils, the stabilization hydrofoils are arranged below the unmanned ship main body, the power propulsion module comprises a wing sail and a sail rotating device, the wing sail is arranged above the unmanned ship main body through the sail rotating device, and the energy supply module comprises a solar charging panel and a storage battery connected with the solar charging panel; the low-resistance characteristic of the strip-shaped single ship structure of the unmanned ship main body is utilized, wind power driving of the wing sails and light energy power generation of the solar charging panel are matched, the cruising ability of the unmanned ship is improved, meanwhile, the problem that the unmanned ship main body of the strip-shaped single ship structure is poor in stability is solved through the stabilization hydrofoils, and the unmanned ship is more stable. And the navigation stability and the anti-overturning capability are improved.

The invention discloses an unmanned ship capable of overturning and submerging and a control method of the unmanned ship. The unmanned ship comprises a middle ship body, a first side ship body, a second side ship body, a first wing plate and a second wing plate. The first side hull and the second side hull are arranged on the two sides of the middle hull, the middle hull is connected with the first side hull through the first wing plate, and the middle hull is connected with the second side hull through the second wing plate; the first wing plate and the second wing plate are each provided with a horizontal rudder, and the first side ship body and the second side ship body are each provided with a plurality of propellers. A plurality of water ballast spaces are arranged in the first side ship body and the second side ship body and used for adjusting water inflow and drainage in the ship bodies, and adjustment of diving, floating and longitudinal and transverse inclination of the unmanned ship is achieved. According to the invention, a symmetrical turnover and submergible design is adopted, multi-degree-of-freedom control is realized in heavy stormy waves, and the device can adapt to diversified operation modes such as water surface navigation and full-submergence navigation, and meets the requirements of overwater and underwater operation under high sea conditions.

The present application pertains to the technical field of ship hydraulic systems, and in particular relates to a hydraulic system for a non-retractable fin stabilizer and a control method therefor. Said hydraulic system comprises a locking mechanism, a fin tiller, a fin-rotating hydraulic cylinder set, and a control valve set, the control valve set being separately connected to the locking mechanism and hydraulic chambers of two fin-rotating hydraulic cylinders. When the control valve set applies to the two fin-rotating hydraulic cylinders driving forces which have the same magnitude and are in the same direction, torques of the two fin-rotating hydraulic cylinders acting upon the fin tiller are of the same magnitude and in opposite directions, such that the fin tiller is reset, and the control valve set controls a retractable pin of the locking mechanism to extend into a pinhole of the fin tiller so as to lock the fin tiller; and when the control valve set alternatingly applies to the two fin-rotating hydraulic cylinders forces in different directions, at this time the fin tiller carries out rotational motion. In the hydraulic system for a non-retractable fin stabilizer of the present application, the fin-rotating hydraulic cylinders can be controlled to drive the fin tiller to rotate, and the torques acting on the two ends of the fin tiller can also be precisely controlled to attain balance, thus ensuring that after being reset the fin tiller can lock the fin in place or unlock same by means of the retractable pin of the locking mechanism.

The invention discloses an unmanned double-body modular self-adaptive hydrofoil ship, and relates to the technical field of hydrofoil ship equipment. The hydrofoil ship comprises a ship body, a buoy, a hydrofoil mechanism and a controller. The buoy is connected with a driving assembly. The hydrofoil mechanism comprises a first hydrofoil mechanism and a second hydrofoil mechanism, and each of the first hydrofoil mechanism and the second hydrofoil mechanism comprises a telescopic rod and a hydrofoil plate. One end of the telescopic rod is connected with the ship body, and the other end of the telescopic rod is rotationally connected with the hydrofoil plate; the hydrofoil plate comprises a base plate and a side plate, a first motor is fixed on the base plate, and the first motor drives the base plate to rotate; the side plates are rotationally connected with the base plate, a second motor is fixed to the base plate, and the second motor drives the side plates to rotate. Through cooperation of the first hydrofoil mechanism and the second hydrofoil mechanism, stability and seaworthiness in the sailing process are enhanced, transverse shaking is reduced, lift force distribution of the hydrofoil plates is optimized, and sailing resistance is reduced.

A boat stabilizer having an upper harness for attachment to a vessel, the upper harness having an assembly control system for controlling attached wing assemblies, each wing assembly having a wing attached to the assembly control system and a wing mount attached to the wing and the assembly control system. The boat stabilizer may be further comprised of a controllable parasail comprising a parasail canopy, a plurality of parasail cords attached the parasail canopy, a parasail mount attached to the upper harness and the parasail cords, a parasail control rudder attached to each parasail cords, and yaw and pitch controllers, both of which are attached to the parasail control rudder. The assembly control system is configured to work in conjunction with the controllable parasail to provide the desired balance of vertical lift and forward propulsion to the attached vessel, while also providing directional control to the attached vessel.

The invention provides a hydrofoil ship which comprises a ship body and a front wing assembly, the front wing assembly comprises a front mast and a front wing body fixedly arranged at one end of the front mast, the other end of the front mast is rotationally connected with the ship body, and the rotational connection position of the front mast and the ship body is located between a prow of the hydrofoil ship and the gravity center of the hydrofoil ship; the front wing body has an unfolding position and a folding position, when the front wing body is located at the unfolding position, the front wing assembly is swept back and provides main lift force for supporting the ship body to leave the water surface, and when the front wing body is folded, the front wing body rotates forwards until the front wing body is exposed out of the water surface, stable lift force can be provided, and meanwhile the hydrofoil ship is more convenient to control; and the folded hydrofoils are exposed out of the water surface to prevent marine organisms from growing, and the folded hydrofoils do not occupy the internal space of the ship body.

The application discloses a kind of ship lifting fin plate self-adapting cleaning device, belong to ship equipment technical field, including fixed plate, the fixed plate is connected with fin plate by suspension assembly, the fin plate outside is provided with deep well, the deep well side wall is provided with cleaning assembly, the cleaning assembly includes the slide rail mounting bracket of the deep well side wall, the slide rail mounting bracket is installed with slide rail, the slide rail is installed with push rod, the push rod is connected with sanding wheel, the whole device is provided with control component.The application adopts the above-mentioned ship lifting fin plate self-adapting cleaning device, push rod is adjusted sanding wheel and fin plate adhesion degree by spring and hydraulic equipment, symmetrically arranged sanding wheel is combined with slide rail and can fully cover fin plate surface, improve cleaning efficiency;Real-time monitoring data is obtained by torque sensor and flexible pressure sensing array, and the cleaning strength is intelligently adjusted by using fuzzy PID algorithm, which can ensure the cleaning effect and avoid damaging the anticorrosive coating of fin plate.

The invention belongs to the technical field of water surface carriers, and particularly relates to a posture-adaptive semi-submersible water surface carrier which comprises a ship body and fins symmetrically arranged on the two sides of the ship body, and the fins can swing on the two sides of the ship body. A main control cabin and a load cabin are arranged in the ship body, a power system and related sensor equipment are carried in the main control cabin, double-beam equipment is carried in the load cabin, an anti-inclination box is further arranged in the ship body, a movable balancing weight is carried in the anti-inclination box, and the gravity center position of the ship body is changed and adjusted through movement of the balancing weight; the water surface carrier adjusts the center-of-gravity position of the ship body through the anti-tilting box and adjusts the buoyancy center through the fins, and the ship body posture is kept stable through the synergistic effect of the anti-tilting box and the fins. A semi-submersible structure perpendicular to the water surface is adopted, vertical mass distribution of'heavy on the bottom and light on the top 'is formed, and passive stability improvement is achieved by means of the physical characteristic that restoring moment is naturally generated when the gravity center is lower than the buoyancy center'.

The present application relates to a wind turbine foundation, a wind turbine generator system and a control method. The wind turbine foundation can be arranged in seawater and is configured to support a tower. The wind turbine foundation comprises: floating bodies, the number of which is n, the floating bodies being spaced apart from each other, lines for connecting the centers of the floating bodies forming a polygon, and n≥3; and a connection body, which is connected between two adjacent floating bodies, wherein each floating body has a static chamber and a dynamic chamber which are independently provided; a first medium is sealed in the static chamber; each floating body is provided with a first opening and a first control valve, which are in communication with the dynamic chamber; and the first control valve controls the opening and closing of the first opening, so as to adjust the volume of seawater that enters inside the dynamic chamber. In the wind turbine foundation, the wind turbine generator system and the control method provided in the embodiments of the present application, the wind turbine foundation has a fast response speed and a good stabilizing effect.

Disclosed is a flow-guide device for an offshore platform, comprising a flow-guide column base, a ballast level control device and a spiral side belt system, wherein the flow-guide column base is located at the bottom of an offshore platform, and multiple flow-guide column bases are arranged symmetrically and distributed in a ring array; the flow-guide column base is rotatably connected to the offshore platform; a ballast compartment is arranged in the flow-guide column base, and the ballast level control device is used for controlling a ballast level in the ballast compartment; and the spiral side belt system is arranged outside the flow-guide column base and used for restraining vortex-induced resonance. The flow-guide column base and the offshore platform can be kept in a relatively fixed state by means of a clamping device, such that the offshore platform is able to rotate synchronously with the flow-guide column base.

A marine propulsion system for a marine vessel including a joystick, at least one steerable and trimmable marine drive, and a control system configured to receive a user input to engage full vessel control mode, receive a vessel speed parameter, and receive a joystick position from the joystick. The control system determines a thrust command, a steering command, and a trim command for the at least one marine drive based on the joystick position and the vessel speed parameter and to control the at least one marine drive accordingly.

An adjustable surf wake system enhances a wake formed by a watercraft travelling through water. The system may include a flap for deflecting water traveling past the stern of the watercraft, and / or a positioner operably connected to the flap for positioning the flap relative to a longitudinal axis of the watercraft between a neutral position and an outward position. Positioning a port flap in its extended position enhances a starboard surf wake, and positioning the starboard flap in its extended position enhances a port surf wake. A wake modifying system for modifying a wake produced by a watercraft traveling through water may include a rudder pivotally mounted to the watercraft for steering the watercraft, a fin pivotally mounted to the watercraft substantially along a centerline of the watercraft and forward the rudder, wherein the fin pivots about an upright axis to modify the wake produced by the watercraft traveling through the water, an actuator mounted within the watercraft and operably coupled to the fin for pivoting the fin relative to the centerline, and a controller mounted on the watercraft allowing an operator to control the actuator and selectively pivot the fin to a desired angle θd relative to the centerline.

The invention discloses a ship stability protection device, and relates to the technical field of ship engineering, the ship stability protection device comprises a ship main body, containing grooves are formed in the two sides of the ship main body, and main stabilization assemblies are arranged in the containing grooves; the main anti-rolling assembly comprises a main anti-rolling fin used for enhancing the stability of the ship body and a main fin driving mechanism used for driving the main anti-rolling fin to unfold or contract, a storage groove is formed in the bottom of the ship body, and an auxiliary anti-rolling assembly is arranged in the storage groove; the auxiliary stabilization assembly comprises an auxiliary stabilization fin used for being matched with the main stabilization fin to improve the stabilization effect and an auxiliary fin driving mechanism used for driving the auxiliary stabilization fin to unfold or contract, by starting the rotation driving component, the rotation driving component drives the rotation block to rotate by 90 degrees around the rotation column, the fixing frame is made to rotate out of the containing groove, and the auxiliary fin driving mechanism drives the auxiliary stabilization fin to unfold or contract. The extension length of the main fin stabilizer is changed by the linear driving part, so that the length-width ratio of the ship main body is changed, and the stabilization effect of the ship main body is improved.

The invention relates to a full-speed fin stabilizer without occupied space, and belongs to the technical field of fin stabilizers, and the fin stabilizer comprises a fin angle feedback device, a rotating vane oil cylinder, a supporting seat assembly, a rotating shaft assembly and a fin; the supporting seat assembly comprises a supporting shaft and a first rolling bearing; the supporting shaft is of a hollow shaft structure, one end of the supporting shaft is fixed to the ship body, and the other end of the supporting shaft is sleeved with the first rolling bearing and inserted into the fin to be connected with the fin. The rotating shaft assembly comprises a rotating shaft; the rotating shaft coaxially penetrates through the interior of the supporting shaft, one end of the rotating shaft is coaxially connected with the fin, the other end of the rotating shaft is connected with the rotating vane oil cylinder installed on the supporting shaft, and the rotating vane oil cylinder drives the fin to coaxially rotate through the rotating shaft. Meanwhile, the end of the rotating shaft is connected with a fin angle feedback device installed on the rotating vane oil cylinder, and the fin angle feedback device is used for detecting the angle displacement of the fin and feeding back the angle displacement to the control system. According to the full-speed fin stabilizer, a traditional fin base and an executing mechanism supporting base are integrated, the rotating vane oil cylinder is introduced, and the requirements of the full-speed fin stabilizer which is small in occupied space and large in rotating angle can be met.

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.

A method and apparatus for adding buoyancy to the transom of a boat by attaching buoyant material to the trim tabs, or to the planing surface of the trim tab, or constructing the trim tab itself of buoyant material. The buoyancy can be used to correct listing of a boat, or compensate for outboard engines that are unable to clear the water line when tilted up, or generally raise the stern of the boat while at rest. Buoyancy can be added to conventional trim tab plates or added to vertically extending interceptor blade type trim tabs. The invention also proposes a method by which trim tabs can be attached to the transom or the “step” or “pocket” above by a fixed or manually adjustable linkage, such as with a turnbuckle or jack screw or through-bolted perforated rods.

The invention relates to the technical field of marine equipment, and particularly discloses a ship fin stabilizer which integrates bionic resistance reduction, intelligent control and energy recovery functions. The fins are of a layered structure of a flexible silica gel skin and a shape memory alloy wire mesh, V-shaped groove arrays are arranged on the surfaces of the fins, and the fins can be self-adaptively deformed into a U shape to reduce resistance. The driving mechanism realizes high-frequency compensation through cooperation of a hydraulic cylinder and piezoelectric ceramics; the energy recovery module converts mechanical energy into electric energy through a two-way pump-generator. According to the device, the rolling trend is predicted through the LSTM neural network, a Q-learning optimization control strategy is combined, the stabilization efficiency and energy efficiency are remarkably improved, and the device is suitable for stable control of ships under high navigational speed and complex sea conditions.

The invention relates to a test device and a control method for zero-speed rolling reduction of a ship. The test device comprises a ship model, a forced rolling device, a sensor device and a fin rolling reduction device, the forced rolling device is used for driving the ship model to generate rolling motion; the sensor device is used for monitoring attitude information of the ship model in rolling motion; the control device generates an action decision of the fin stabilization device through the strategy network; the fin stabilization device flaps to a specified angle and frequency according to the action decision generated by the control device; wherein the sensor device monitors the posture change of the ship model and the actual flapping angle of the fin stabilization device in real time and feeds back the posture change and the actual flapping angle to the control device, and the control device evaluates the effectiveness of the current strategy according to the feedback of the sensor device: if the stabilization effect meets the requirement, the current strategy is enhanced, otherwise, the strategy network is updated; and the control action of the fin stabilizer is further optimized. The test device is simple in structure and control method, and stabilization can be realized under different sea conditions and dynamic changes of ship rolling.

A support system for outboard marine motors at the transom of a boat includes a support device having a first part that is integral with the transom and a second part that is integral with the outboard motor. The second part is translatable with respect to the first part, so that the second part moves according to an orientation in the distancing or approaching direction of the water line of the boat. A control unit is configured to set the position of the second part with respect to the first part and to generate control signals, so as to move the second part in the direction of immersion of the propeller of the outboard motor.

A computer system includes processing circuitry configured to: obtain data indicative of a target total lift force to be generated by a front hydrofoil arrangement of a marine vessel and by a rear hydrofoil arrangement of the marine vessel, wherein the target total lift force is associated with a constant heave of the vessel; determine a lift force discrepancy between a current lift force of the vessel and the target total lift force, based on a state of the rear hydrofoil arrangement; and adjust an angle of attack of the front hydrofoil arrangement to compensate for the lift force discrepancy.

The electric hydrofoil according to the invention comprises an assistance system to assist its control with a passive warning mode of operation and / or with an active corrective mode of operation. The system thus created is very useful for beginners in this sport and provides easier and safer operation of the electric hydrofoil.