9results about How to "Achieve precision control" patented technology

The invention discloses an off-line and on-line combined unmanned aerial vehicle simulation flight path planning method, which belongs to the field of unmanned aerial vehicle flight path planning, and specifically comprises the following steps: obtaining a series of insertion waypoint longitudes and latitudes through a waypoint interpolation algorithm according to a selected route before a flight task is executed in an off-line mode; then altitude information stored in an elevation database is obtained in an elevation query mode, the target height of each waypoint of the unmanned aerial vehicle is calculated, and then route planning in the whole task process is completed; in the online mode, in the flight mission execution process, a real-time to-ground laser ranging system is adopted to obtain real-time to-ground height information of the unmanned aerial vehicle, after a measurement error is calibrated by combining flight attitude information of the unmanned aerial vehicle, the measurement error is compared with the actual flight height of the unmanned aerial vehicle, and the to-ground height of the unmanned aerial vehicle is calibrated on the basis of a pre-planned route; and the ground-imitating flight precision of the unmanned aerial vehicle is improved. According to the invention, high-precision ground-imitating equal-altitude flight route planning of the long-endurance unmanned aerial vehicle in a complex environment is realized.

The invention discloses an adjustable guide limiting stopper for planting a socketed pile and a pile planting process. The guide limiting stopper is composed of N limiting assemblies and N anchor chain assemblies. The limiting assembly comprises a foundation ring capable of being oppositely opened, the multiple adjusting devices are evenly distributed on the annular outer wall of the foundation ring in the circumferential direction of the foundation ring in a radial shape, and the multiple inner sliding assemblies are evenly distributed in multiple inner sliding assembly mounting grooves in the annular inner wall of the foundation ring. The outer sliding assemblies are fixed to the outer side ends of the adjusting devices correspondingly, and the distances between the outer sliding assemblies and the foundation ring are adjusted through the adjusting devices. The N limiting assemblies are coaxially arranged at intervals from top to bottom, and the N anchor chain assemblies are arranged above the limiting assemblies correspondingly so as to connect the adjacent limiting assemblies or the limiting assemblies and a crane lifting hook. The guide limiting stopper is suitable for the adjusting requirement of different deviation conditions of the pile casing and the designed pile position of the engineering pile, precision control over the perpendicularity and the plane position of the engineering pile is achieved, the construction time and cost are saved, and the construction efficiency is improved.

The application provides a method for installing a berthing component, and belongs to the technical field of berthing component installation. The method uses a manual chain block to realize secondary lifting of the berthing component, thereby adjusting the height position of the berthing component and improving the position accuracy of the berthing component. Moreover, the manual chain block is used to directly lift the berthing component relative to hoisting equipment (a square barge crane), and the use of the manual chain block can ensure that the berthing component moves in the vertical direction and does not move in the horizontal direction. Meanwhile, since the manual chain block is used to lift the berthing component, the distance between the lifting point of the manual chain block and the berthing component is small, so the amplitude of the swing of the berthing component caused by the action of side wind is small, thereby facilitating the adjustment of the position of the berthing component and improving the use experience of the product.

This utility model discloses an automatic waterproof membrane paving machine capable of precise edge overlapping in concrete structures. It includes a paving roller, a laser positioning mechanism, a heating roller, and an elastic pressure roller mechanism. The laser positioning mechanisms are symmetrically arranged at both ends of the paving roller; each laser positioning mechanism includes a red laser. The heating roller is located at one end of the paving roller, and the elastic pressure roller mechanism is located at the rear of the paving roller, comprising a pressure roller and a spring. Through the laser positioning mechanism and the edge overlapping and pressing assembly, not only is precise control of the membrane laying path achieved, but operational stability at the edge overlapping position is also improved, as well as the overlapping and bonding effect, further enhancing the waterproofing effect.

This invention relates to the field of rare earth electrolysis processes, specifically to an oxide feeding control system and its control method, comprising: an oxide feeding device and a control module. The oxide feeding device includes a first hopper and a second hopper located below the first hopper. A control valve is installed between the first and second hoppers. A feeding mechanism is installed below the second hopper, and a loss-in-weight detection scale is installed at the bottom of the second hopper. The control valve includes a valve body, a drive motor, and a transmission component. A valve core is connected to the end of the transmission component. A spring is installed on the side wall of the valve body located below the valve core. A first vibration sensor is provided at one end of the spring near the side wall. The control module is electrically connected to the drive motor, the loss-in-weight detection scale, the first vibration sensor, and the second vibration sensor. When the second hopper is filled to more than 70% of the target weight, the speed of the motor auger is reduced. This invention reduces the impact on the sensors to an acceptable range, thereby achieving precise control.

The present invention discloses a method for mounting a total assembly of the bottom section of the engine room of an LNG ship. The design method comprises the following steps: S1, setting a total assembly cradle of the bottom section of the engine room, S2, first segment positioning, S3, second segment assembly, S4, third segment assembly, S5, fourth segment assembly, S6, fifth segment assembly, S7, setting a cradle for mounting the bottom section of the engine room, S8, dock mounting the bottom section of the engine room. The present invention adopts an efficient cradle design method, which is in line with the characteristics of the double-shaft engine room section of the LNG ship, can improve the mounting accuracy and efficiency of the bottom section of the engine room of the LNG ship, and improves the level of safe construction, can improve the installation accuracy of the main engine of the LNG ship, and ensure the propulsion efficiency of the LNG ship during operation.

The embodiment of the invention discloses a body measurement size prediction method and device fusing multi-modal data and a medium, is applied to the technical field of artificial intelligence, and is used for solving the problem that an existing body measurement mode is low in efficiency and low in accuracy. The method comprises the following steps: training an initial visual feature extraction model based on a sample human body image and a user basis corresponding to the sample human body image to obtain a preset visual feature extraction model; acquiring a multi-angle human body image of a current user and basic parameters of the user, and splicing the multi-angle human body image and the basic parameters of the user to obtain multi-channel input data; performing feature extraction on the multi-channel input data based on a preset visual feature extraction model to obtain corresponding visual features, and inputting the visual features into a preset full-connection layer to obtain feature data corresponding to the current user; and processing the feature data according to a preset auto-encoder model to obtain a prediction result of the current user.

The invention discloses a preparation method of a high-K dielectric material aluminum oxide film. The preparation method comprises the following steps: putting a pretreated substrate into a vacuum reaction chamber, vacuumizing and heating; introducing a first precursor gas Al (CH3) 3 into the reaction chamber, and applying a voltage to form an electric field; then introducing inert gas; introducing a second precursor gas H2O, and synchronously applying voltage to form an electric field; then introducing inert gas; repeating the steps for several times until the aluminum oxide film with the required thickness is deposited on the substrate; and finally, inert gas is introduced, and normal pressure is recovered. In the process of preparing the high-K dielectric material aluminum oxide film through atomic layer deposition, electric field regulation is introduced, so that the adsorption behavior and reaction kinetics of precursor molecules are improved, and the deposition rate is increased to be close to theoretical expectation; by utilizing electric field regulation and control, atomic layer precision control in the growth process of the aluminum oxide film can be realized, and the growth precision of the aluminum oxide film is improved.

The present invention provides a roller positioning and measuring method, which relates to the technical field of equipment installation. The method comprises: collecting reference point data, selecting collection points on the roller and collecting the design coordinates of the collection points. According to the reference point data, a total station is used to establish a coordinate station. The accuracy of the station establishment is confirmed. A frame is installed on the top of the roller, and the frame is leveled for installing a target rod. The target rod is inserted into the frame, the bottom of the target rod is against the surface of the roller, and a prism is installed on the top of the target rod. The three-dimensional coordinates of the collection point are measured by the total station to obtain the collection coordinates. The collection coordinates are compared with the design coordinates, and the first difference between the collection coordinates and the design coordinates is calculated. The roller position is adjusted according to the first difference to complete the positioning of the roller. The method is simple to operate, avoids the problems of wire rack hanging and human errors in measurement in the traditional method, improves the measurement accuracy, and realizes the precision control of the roller equipment.