11 results about "Lateral drift" patented technology

An inflatable paddle board includes a board body which is inflatable and a central balancing fin which is configured to be provided at a bottom of the board body, the central balancing fin increases the surface area in contact with the water, so as to provide additional lateral resistance, and this added resistance stabilizes the paddle board, making it less prone to tip over, and also maintain a straight trajectory by reducing the lateral drift.

The application discloses a transverse drift stabilizer applied to a small towing system, which comprises a towing main body, a towing tail plate and streamlined stabilizers, the towing main body and the towing tail plate are connected through a shaft to form a basic towing system, and the towing main body is connected with the streamlined stabilizers on both sides respectively, and the towing tail plate can swing up and down during operation. The transverse drift stabilizer has simple structure and can self-adaptively maintain the stability of transverse movement in the marine environment with transverse disturbance.

The invention relates to the technical field of energy-saving heat supply management, and discloses an energy-saving heat supply management system which comprises the steps that characteristic parameters, including a water supply temperature sequence, a return water temperature sequence, a condensation layer temperature sequence, gas flow and system flow, of a wall-mounted gas boiler are collected according to a fixed time interval; the water supply temperature sequence and the return water temperature sequence are subjected to first recognition processing, a convection gradient path is obtained, and the convection gradient path comprises a convection slope and a convection transverse position; performing second identification processing on the condensation layer temperature sequence to obtain the center height of the condensation layer; comparing the convection transverse position with a preset convection transverse position, and determining a transverse drift error; the center height of the condensation layer is compared with the preset center height of the condensation layer, and a vertical drift error is determined; judging whether the transverse drift error and the vertical drift error exceed limits or not; if the transverse drift error exceeds the limit, axial correction is carried out in combination with the convection slope; and if the vertical drift error exceeds the limit, adjusting the system flow to carry out vertical correction.

The Huntsman Bit is a Forstner-style drill bit designed to precisely enlarge existing holes, even when a center alignment point is no longer present. It features a non-cutting leading edge that acts as a self-aligning guide within a previously drilled hole, preventing lateral drift and protecting the material surface. Positioned above the guide is a step-cutting edge that incrementally increases the hole diameter with control and accuracy. Constructed from durable steel alloy, the bit is offered in both SAE and metric sizes, with diameters consistent with standard Forstner bit ranges. The design enables versatile application in woodworking and carpentry where reliable hole enlargement is required.

The invention discloses a navigation building approach channel entrance width determination method, and particularly relates to the technical field of approach channel design. According to a ship lock approach channel, an entrance area, connection section arrangement, representative ship navigation capability and on-way navigation water flow conditions, dynamic change characteristics of ship navigation are considered; and establishing a ship transverse drift accumulation calculation formula in the process of driving the ship into the approach channel, accurately predicting the drift condition of the ship under the action of water flow, further determining the width of an approach channel entrance, and ensuring that the ship can safely and smoothly drive into the approach channel.

The invention discloses an ozone column total amount calculation method based on sounding observation, and relates to the technical field of data analysis, by introducing a GPS three-dimensional path and air mass layer overlay analysis on the basis of traditional vertical section calculation, the situation that a sounding balloon passes through an air mass boundary or an ozone sudden change area due to transverse drift can be identified, and the overall ozone column total amount is calculated. And judging the section interfered by the transverse non-uniformity in the vertical section. By constructing a profile credibility weight mechanism, the suspected misjudgment section is flexibly corrected, the situation that transverse sudden change is misunderstood into vertical change is avoided, and the space consistency and the structure authenticity of column total amount calculation are improved. And meanwhile, a transverse interference section is extracted to generate an error sensitive mark for the remote sensing inversion model to use, so that the interference of a pseudo gradient structure on model training is remarkably reduced, and the problem of vertical misjudgment caused by balloon drift in a traditional method is solved.

The invention discloses a laminated structure of a three-dimensional memory and a preparation method of the laminated structure. The laminated structure comprises a substrate, a plurality of isolation layers, a plurality of metal layers, a groove and a storage layer, in the first direction, one isolation layer is stacked on the first side of the substrate, and the isolation layers and the metal layers are alternately stacked; the groove penetrates through the plurality of metal layers and the plurality of isolation layers along a first direction; the side wall of the groove is provided with an arc-shaped groove located in the metal layer; the concave direction of the arc-shaped groove is perpendicular to the first direction; the storage layer covers the surface of the arc-shaped groove. Therefore, in the laminated structure, the side wall of the groove is provided with the arc-shaped groove located in the metal layer, so that the contact interface of the metal layer and the storage layer can form arc-shaped transition, the distribution of an electric field on the side wall of the groove is optimized, the phenomenon of electric field concentration is reduced, and the probability of carrier lateral drift is reduced, thereby improving the accuracy of charge trapping and storage; and crosstalk between adjacent storage units is reduced. When the laminated structure is applied to the three-dimensional memory, the reliability of the three-dimensional memory can be improved.

The invention discloses a floating body suspension wave energy collecting device which comprises a floating body structure connected with a seabed through at least one mooring anchoring system. The conversion part is connected with the mooring and anchoring system and used for converting the tension change of the mooring and anchoring system and the movement of the floating body structure into mechanical movement; the power generation module is connected with the conversion part and used for converting the mechanical motion into electric energy; the mooring and anchoring system, namely a static assembly which only has a fixing function originally, is converted into an energy capture carrier, and dynamic tension and inertial load induced by multi-direction movement such as heaving, rolling, pitching and transverse drifting generated by the floating body under the action of wind, waves and tides are directly utilized; potential energy neglected for a long time can be effectively captured and utilized, an independent energy collecting device does not need to be additionally built in the design, the function is achieved through a mooring system necessary for the floating body, and the energy utilization efficiency of the offshore floating body structure is greatly improved.

The application discloses a kind of complex sea conditions near water surface trans-medium platform's anti-disturbance attitude control device and method, using the active fluid dynamic control of cross type tail rudder, can real-time generate reverse rectification torque, effectively offset near water surface sea wave, surge and shear flow to the lateral drift and attitude disturbance caused to platform, the device realizes the closed-loop correction of the floating trajectory, ensure that platform can converge to the predetermined area accurate water, effectively solve the problem of large drop point dispersion range under complex sea conditions, greatly improve the precision of operation deployment;Device is calculated by internal control unit, drive four rudder blades to carry out independent differential or linkage deflection, can complete fine adjustment to platform pitch angle, yaw angle and roll angle under water, which makes platform not need to change hardware configuration, can be independently selected according to actual operation instruction Vertical water, fixed angle water or near horizontal attitude water three modes, greatly expand the single platform's scientific research and engineering application scene.

This invention discloses a method and system for motion estimation of large ships based on multi-millimeter-wave radar. The method includes: deploying at least three millimeter-wave radars along the length of the ship on both port and starboard sides to acquire radar extrinsic parameters; simultaneously acquiring point cloud data and converting it to the ship's coordinate system; filtering out isolated noise points through point cloud consistency matching in overlapping areas to obtain a clean point cloud; solving for the local velocities of each radar based on a radial velocity measurement model and the RANSAC algorithm and converting it to the ship's coordinate system; combining a rigid body kinematics model to fit and solve for the lateral / longitudinal velocities and angular velocities of the ship's center of mass, calculating the lateral / longitudinal accelerations and bow-stern lateral drift velocities, and improving stability through filtering. This invention achieves all-weather, high-precision motion state perception with no cumulative errors through multi-radar data fusion and robust algorithms, providing reliable data support for intelligent operations such as autonomous navigation and collision avoidance for large ships.

An inflatable paddle board includes a board body which is inflatable and a central balancing fin which is configured to be provided at a bottom of the board body, the central balancing fin increases the surface area in contact with the water, so as to provide additional lateral resistance. This added resistance stabilizes the paddle board and makes it less prone to tip over. It also helps maintain a straight trajectory by reducing the lateral drift.