8results about How to "Improve self-sustainability" patented technology

The invention discloses an erosive wear device suitable for a servo valve and a test method, which are used for solving the problems that a plunger pump is not resistant to pollution, a gear pump is difficult to supply high pressure, and the multi-factor synergistic effect cannot be investigated in the existing test. The device comprises a polluted oil source, a clean oil source, a pressurization system and a tested piece system. Wherein the polluted oil source adopts a gear pump to supply oil, and is provided with a stirrer, a heater and a pollution degree detector; the pressurization system comprises a double-acting pressurization cylinder, a servo valve and an energy accumulator and can output high-pressure stable oil liquid. The clean oil source is used for driving pressurization and adjusting the pollution degree of the main oil way. During testing, a high-pressure mode and a low-pressure mode are switched through the three-way ball valve, and temperature and pollution degree adjustment is integrated. According to the invention, high-pressure and high-pollution-degree test oil liquid can be provided, and collaborative research of multiple factors such as pressure, temperature and pollution degree is supported, so that the test period is remarkably shortened.

The embodiment of the present disclosure provides an offshore monitoring system. In a specific embodiment, the system comprises an offshore anchoring platform and a float; the offshore anchoring platform is provided with a traction assembly for connecting the float; the float is provided with an aerial wind power generation assembly, a monitoring assembly, a wireless communication assembly, a controller and a first energy storage unit, the monitoring assembly comprises a target monitoring assembly and a meteorological monitoring assembly; the controller is used for acquiring a first state of charge of the first energy storage unit, and controlling the running states of the aerial wind power generation assembly, the target monitoring assembly, the meteorological monitoring assembly, the wireless communication assembly and the first energy storage unit according to meteorological information acquired by the meteorological monitoring assembly. The embodiment can realize the dynamic balance among energy production, energy storage and load, and the integration of source acquisition and information sensing depth.

The invention discloses a marine hybrid power integrated device with multiple planetary gear sets and axial flux motors and an energy management method, and the core innovation of the device system is that rotor output shafts of a plurality of high-power axial flux motors are coaxially, rigidly and directly connected with sun gear input shafts of corresponding planetary gear sets through flange plates; the energy management method is characterized in that a whole ship controller integrates the real-time storage amount of hydrogen ammonia fuel and the hydrogen production rate on the ship, and the energy management efficiency is improved. And the output of the high-power hydrogen fuel cell and the output of the high-power solid-state energy storage cell are subjected to prospective dynamic distribution, and the state of a fuel supply chain is brought into a power control closed loop, so that compact integration, stepless smooth speed regulation and global energy efficiency intelligent optimization of a large-wheel multi-source power system are realized; and the power system is particularly suitable for green zero-carbon technical transformation of an ultra-large ocean-going wheel power system with extremely high requirements on endurance and power.

This invention discloses a target trajectory background modeling method and system based on bidirectional difference and grayscale correction, belonging to the field of image data processing technology. The method includes: S1, periodically acquiring basic image trajectory data and performing preprocessing on the acquired data; S2, constructing a frame index sequence, generating a frame pairing table and a grayscale coefficient table, performing grayscale correction and bidirectional difference calculation on the paired frame sequence to obtain the candidate motion mask for the current frame; S3, obtaining the initial background region of the current frame, evaluating the background confidence level of each pixel, and generating an effective background region; S4, comprehensively evaluating the stability level and fluctuation constraint capability of the background, dividing the stable and weak background regions, and outputting the frame-level motion mask to complete the background closed-loop output. This solves the problem that traditional background modeling methods directly use arithmetic mean modeling in a few-frame sequences, leading to the background grayscale being lowered by high-contrast moving pixels, thus generating motion artifacts and causing weak target detection failure.

This invention discloses a novel double-layer pipe roof reinforcement device and its implementation method. The pipe roof consists of two layers arranged in a staggered pattern. A movable sleeve is installed inside the pipe roof, and several steel nails that can pass through the pipe roof are fixed on the sleeve and inserted into the soil under grouting pressure. This effectively expands the reinforcement range of the pipe roof, enhances the self-bearing capacity of the surrounding rock, and achieves a significant reinforcement effect. Furthermore, this invention also discloses an implementation method for using this double-layer pipe roof reinforcement device, including: Step 1: Construction preparation; Step 2: Measurement and layout; Step 3: Installing measuring water pipes or sensors and installing impact drilling tools on the pipe roof steel pipes; Step 4: Installing the first section of steel pipe and starting the drilling rig; Step 5: After advancing 0.5m, verifying the construction parameters and adjusting them before continuing drilling; Step 6: Verifying the pipe roof construction parameters and checking the borehole formation; Step 7: Installing grouting pipes at the ends and filling the pipe roof steel pipes with cement grout; Step 8: Sealing the borehole.

The invention provides a near space jet propulsion system based on a fuel cell and a propulsion method thereof, and belongs to the technical field of near space propulsion. The system comprises an inner shell, an outer shell, a fluid conveying system, a motor system, a porous structural body, a high-speed molecular-level rotating shaft pump, a precooler, a liquid hydrogen tank, a liquid oxygen tank, a high-temperature proton exchange membrane fuel cell, a tail gas collecting and electrolyzing device, a pressure stabilizing chamber, a direct-current conversion control system and an expansion cavity, the invention discloses a flexible solar panel and a plasma electromagnetic jet generator. The system integrates hybrid power supply of a high-temperature proton exchange membrane fuel cell and a flexible solar panel, and is coupled with a tail gas collection electrolysis device to realize in-situ regeneration of an oxyhydrogen working medium; main thrust is generated through the plasma electromagnetic jet generator, multi-mode propulsion is formed in cooperation with the distributed electric propulsion unit, the bottlenecks of unstable combustion, high carbon emission, short endurance and the like in a rarefied air environment are broken through, and zero-carbon-emission, long-endurance and high-reliability operation of the near space aircraft is achieved.

The application discloses a land-air amphibious morphing unmanned aerial vehicle based on a flexible phase change switching actuator. The unmanned aerial vehicle comprises four variable stiffness components, a driving component, a first frame, a motion executing component, a sliding component and a clamp; the driving component is arranged on the sliding component, the driving component is provided with the first frame, the periphery of the first frame is provided with a plurality of motion executing components, each motion executing component is connected with the first frame through a respective variable stiffness component, and both ends of the variable stiffness component are provided with a clamp for connecting the motion executing component and the first frame. The land-air amphibious morphing unmanned aerial vehicle based on the flexible phase change switching actuator can realize repeated reversible working state switching and land-air amphibious motion, has great significance for the motion and work of the unmanned aerial vehicle in a complex environment, and has higher self-sustaining ability and adaptability to the complex environment, and has great application prospect.

The application provides a kind of foot type robot obstacle avoidance navigation control method and system, it is related to robot control technical field, the method includes: obtaining building information model, construction stage and work task information;Component semantic analysis and traffic space extraction are carried out on the model, and multi-layer navigation prior map is generated;Initial pose estimation and real scene perception are completed using sensors to obtain online results, which are spatiotemporally registered with the prior map to identify environmental differences;Risk weight is updated according to environmental differences and construction stage information, and the prior map is refreshed;Based on the updated semantic topological constraints and task information, an initial global path is generated;Based on the path, online results, foot end state and motion posture, a comprehensive evaluation result is obtained;According to the result, local obstacle avoidance and trajectory correction are performed to obtain the final path and gait parameters and issue to the controller for execution.The application improves the environmental adaptability, path executability and long-term deployment self-maintenance capability of the robot in dynamic construction site.