78 results about "Sailing craft" patented technology

The invention belongs to the technical field of ship course control, and discloses an unmanned sailboat sail-rudder cooperative active-disturbance-rejection course control method based on ESO, and the method comprises the following steps: building a nonlinear course motion mathematical model; designing a self-adaptive tracking differentiator to smooth the expected course; the course, the yawing angular velocity, the sail aerodynamic moment and the comprehensive disturbance are observed in real time through ESO; based on a nonlinear state error feedback control law, in combination with the output of the tracking differentiator and the observed value of the ESO, generating a rudder torque control quantity, performing constraint processing on the rudder torque control quantity, and outputting a rudder angle instruction; and a dynamic optimal sail angle is decided according to the lift-drag ratio parameter, the apparent wind speed and the relative wind angle of the sail aerodynamic model corrected in real time, and a sail angle instruction is generated after the dynamic optimal sail angle is compensated and constrained by combining the course deviation. The adaptive capacity to the time-varying wind field and the model uncertainty is enhanced, and the anti-interference performance and the energy efficiency of the system are improved through dynamic optimization and compensation of the sail angle.

A system for sailing training includes at least one tuning parameter of a sailboat which can be set to multiple positions; a camera mounted on the sailboat for recording a video of a current position of the at least one tuning parameter; a mobile computing device for controlling the camera; an app executing on the mobile computing device for analyzing the position video of the at least one tuning parameter of the sailboat and for determining in real-time using AI how to modify the current position of the tuning parameter to maximize performance of the sailboat; and a notification generated by the mobile computing device for alerting a sailor to the preferred tuning parameter position.

The invention discloses a method for determining optimal water surface stability and underwater motion performance of a dual-mode unmanned sailboat. Firstly, based on ship stability specifications, the water surface initial stability height of a sailing ship under different heavy hammer masses is calculated, and the initial stability height range is determined; secondly, ship body recovery torque and wind tilting torque are calculated, static and dynamic heeling angles are determined, and the initial stability high range of the ship body is further narrowed; thirdly, calculating underwater stability, establishing an underwater motion model, and obtaining a hydrodynamic coefficient; then, simulation is carried out based on the underwater motion model, and the limit pitch angle and rising / diving height performance under different parameters are calculated. And finally, constructing a multi-objective optimization model and solving an optimal parameter combination. And selecting an optimal compromise scheme based on an ideal point method, and determining the final weight mass and propeller mounting angle. Unified optimization of the dual-mode performance is achieved, and the design efficiency and the comprehensive performance of the aircraft are remarkably improved.

The application belongs to the field of unmanned sailboat manufacturing, in particular to a lightweight wing sail of an unmanned sailboat and a processing method thereof. The lightweight wing sail of the unmanned sailboat comprises a carbon fiber wing sail shell and a metal framework. The metal framework is arranged at the lower part of the inner cavity of the carbon fiber wing sail shell. The carbon fiber wing sail shell comprises a carbon fiber wing sail shell side piece A and a carbon fiber wing sail shell side piece B. A plurality of hand holes are arranged on the carbon fiber wing sail shell side piece B. The carbon fiber wing sail shell and the metal framework are arranged, and the metal framework is arranged at the lower part of the inner cavity of the carbon fiber wing sail shell. The upper part of the inner cavity of the carbon fiber wing sail shell can be supported by the structure of the carbon fiber wing sail shell itself. The metal framework does not need to penetrate from top to bottom in the carbon fiber wing sail shell. The weight of the entire wing sail can be greatly reduced, the gravity center of the wing sail is lowered, the overall gravity center of the unmanned sailboat is lowered, the rolling stability and the anti-overturning ability of the unmanned sailboat are effectively ensured, and the installation structure is simple and easy to process.

This invention provides an angle-of-attack control device and a passive angle-of-attack airfoil sailboat, belonging to the field of passive angle-of-attack control for rigid sails. The angle-of-attack control device includes an airfoil sail and a rotating mechanism. The airfoil sail includes an airfoil sail surface, a mast, and a base matching the mast. The mast is perpendicular to the base and rotatably connected to the base. The mast is fixedly connected to the bottom of the airfoil sail surface. The rotating mechanism is located at the top of the airfoil sail surface. The rotating mechanism includes a motor and a rotating drum. The motor includes a rotation drive component, a speed-changing component, and an output shaft. The motor is located at the top of the airfoil sail surface, and the output shaft is parallel to the mast and fixedly connected to the rotating drum. This passive angle-of-attack airfoil sailboat includes a double hull and multiple angle-of-attack control devices, which are arranged in an array on the double hull. Using the angle-of-attack control device and passive angle-of-attack airfoil sailboat provided by this invention can solve the problems of excessively large airfoil sail structures, insufficient mainsail area, and insufficient propulsion in existing technologies.

The invention relates to the field of unmanned sailboat environment perception and path planning, and discloses an unmanned sailboat path planning method combining dynamic wind field reconstruction and an A star algorithm, and the method comprises the following steps: 1, environment modeling and initialization; 2, wind field data simulation and wind field preparation; step 3, executing A star algorithm path planning; 4, meteorological station wind field sampling; step 5, dynamic wind field reconstruction based on a Navier-Stokes equation is carried out; the efficient unmanned sailboat path planning method is provided by integrating a dynamic A star algorithm and a dynamic wind field reconstruction technology, and by means of dynamic wind field reconstruction and real-time updating based on a Navier-Stokes equation and in combination with the dynamic A star path planning algorithm, the path of the unmanned sailboat can be effectively planned. The optimal path selection of the unmanned sailboat can be realized in a complex wind field environment, the sailing time and energy consumption are reduced, and the sailing safety is improved at the same time.

Vehicle with: - a DC network (101) comprising: a) a high-voltage busbar (104) operating at a first voltage level; b) a low-voltage busbar (106) operating at a second voltage level below the first voltage level; c) converters (138, 152, 156) configured to transfer current between different voltage levels by means of a conversion; - at least one high-voltage battery (130) configured to store current at the first voltage level and electrically connected to the high-voltage busbar (104) to transfer current to and from the high-voltage busbar (104); - electrical loads (100) comprising: a) high-voltage loads (114) connected to the high-voltage busbar (104) in parallel with the high-voltage battery (130) to be supplied at the first voltage level;b) Low-voltage loads (116) connected to the low-voltage busbar (106) to be supplied at the second voltage level; - an electronic control unit (BCU) configured to control at least one (152) of the converters (138, 152, 156) to regulate the energy / power flows in the DC network (101);characterized in that the DC network (101) also comprises a medium-voltage busbar (105) operating at a third voltage level between the first and second voltage levels, the vehicle also comprising means for generating electricity from renewable energy sources (139) wherein the means for generating energy from renewable energy sources (139) are connected to the medium-voltage busbar (105) so that current is supplied to the third voltage level and wherein the converters (138, 152, 156) comprise: - at least one first bidirectional DC-DC converter (138) arranged to transfer current between the high-voltage busbar (104) and the medium-voltage busbar (105) with a conversion between the first and third voltage levels;- at least one second DC-DC converter (152) arranged to transfer current from a high-voltage busbar (104) or a medium-voltage busbar (105) to the low-voltage busbar (106) with a conversion to the second voltage level from the first voltage level or the third voltage level.

1. Name of the product in this design: Fragrance (Sailboat). 2. Purpose of this design: Fragrance for improving the air quality in vehicles or indoors. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Craft Ornament (Sailboat). 2. Purpose of this design: decorative ornament. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application provides a kind of unmanned sailboat navigation performance prediction and wing sail attack angle control method fusing ocean current influence, and relates to unmanned sailboat navigation performance analysis technical field.First, the mechanical balance equation of unmanned sailboat is established according to the force and moment balance relationship under stable navigation state;Then solve the stable speed calculation problem of unmanned sailboat under the condition of given heading and wing sail attack angle alpha;For a given heading, the maximum steady-state sailing speed of unmanned sailboat is calculated when all wing sail attack angles alpha={1,…,90}°;Finally, the navigation performance of unmanned sailboat is analyzed, the maximum sailing speed reached by unmanned sailboat under different headings when sailing at a certain wind speed is obtained, and the corresponding best wing sail attack angle value when reaching the maximum sailing speed is obtained, and is predicted, combined with the required best wing sail attack angle value, wing sail angle control is carried out.

1. The name of the design product: intelligent remote control sailboat model. 2. The use of the design product: an intelligent remote control unmanned sailboat model for competition. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

1. Name of the product in this design: Vehicle Hanger (Split-Type Sailboat). 2. Purpose of this design: To be hung inside a vehicle. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Assembled Craft (Sailboat Refrigerator Magnet). 2. Purpose of this design: This design is used for assembling handicrafts. 3. The key design features of this product are its shape and pattern, as well as the layout of each component in the assembly diagram. 4. The image or photograph that best illustrates the design highlights: Combined State 1 main view. 5. The back of this product is a part that is not easily seen or cannot be seen during use, so rear views of each component are omitted; this product is a thin product, so other views of each component are omitted.

An electric saildrive (2) for a sailing boat. The electric saildrive (2) comprises an elongate hollow shaft and an elongate transmission axle extending longitudinally within said elongate hollow shaft, and a hollow housing (8) surrounding the elongate hollow shaft. A pod housing (9) is rigidly connected to the end of said elongate hollow shaft and the transmission axle to extends into an inner compartment of the pod housing (9). The inner compartment accommodates an angle drive connecting the transmission axle to a propeller shaft (10) which extends from said inner compartment to the exterior of the pod housing (9) through a second aperture in a sealed manner. The hollow housing (8) has an elongate cross-section so as to pro-vide a fin-shape.

1. The name of the design product: silicone mold (sailboat ornament). 2. The use of the design product: silicone mold for making ornaments by dripping glue. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

A sailboat support includes a keel support platform, a mechanical linkage assembly, and rotating support arms to proportionally distribute the weight of the sailboat between the keel and the hull. The support is designed so that the keel bears the majority of the load while the hull receives proportional support through a flexible cradle. The system is self-adjusting, thus reducing the need for manual adjustments and improving ease of use and safety.

1. Name of the product in this design: Fair Cup (Sailboat). 2. Purpose of this design: Drinking vessel. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses an unmanned sailboat self-adaptive environment sensing method and a sensing system, and relates to the technical field of unmanned sailboats.The application realizes the leap from passive geometric sensing to active cognition based on physical laws through physical trigger sampling, sea wave same-frequency denoising, true wind field reconstruction and active smoothing interaction, effectively solves the problem of sensing failure of the unmanned sailboat in severe sea conditions, and can guarantee stable sailing of the unmanned sailboat.

A sailing device includes a base connected to a lower end portion of a mast and a proximal portion of a boom, and rotatable in a plane perpendicular to an upward-downward direction of a hull.

1. The name of the design product: silicone mold (blank heart sail ship card). 2. The use of the design product: silicone mold for making cards by dropping glue. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

1. Name of the product in this design: Bag (AnyWear Sailing Briefcase). 2. Purpose of this design: For containing items. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Silicone mold (sailboat flower arrangement ornament). 2. Purpose of this design: Silicone mold for making decorative objects using epoxy resin. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

1. The name of the design product: silicone mold (horizontal stripe sailboat card). 2. The use of the design product: silicone mold for making cards by dropping glue. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to the technical field of ship path planning, and particularly discloses an unmanned sailing ship local path planning method and system, and the method comprises the steps: S1, building a sea area map; s2, constructing a random tree; s3, obtaining a new node, if the new node is in a headwind state, executing the step S4, otherwise, executing the step S5; s4, judging whether the new node falls outside a preset headwind constraint area, if so, executing S5, and if not, terminating the expansion and returning to S3; s5, judging whether the new node passes collision detection or not, if so, adding the new node to the random tree, otherwise, terminating the expansion and returning to S3; s6, reselecting a father node for the new node; s7, re-routing the random tree; and S8, judging whether the new node arrives at the terminal point, if so, judging whether the number of iterations reaches the maximum number of iterations, if so, completing local path planning, if not, returning to S3, and if not, returning to S3. According to the method, the local path of the unmanned sailboat is optimized and planned.

A motion transmission system for maneuvering sail ropes includes a winch, a winch drive device and a kinematic connection system between the drive device and the winch. The kinematic connection system includes at least one angular drive including a train of gears which mesh together for transmitting a rotary motion from the drive device to the winch. The train of gears includes a first gear rotatably mounted around a first axis and a second gear rotatably mounted around a second axis. The angular drive includes first and second supports hinged to each other around a hinge axis and an adjustment system of the relative angular position between the supports around the hinge axis. The first and second gears are respectively mounted on the first and second supports as to allow adjustment of the relative angular position between the first and second axes around the hinge axis through the adjustment system.