9results about How to "Improve landing efficiency" patented technology

The application discloses an industrial robot predictive maintenance system based on machine learning, and relates to the technical field of industrial robot maintenance.The application comprises a data acquisition module, a preprocessing module, a feature engineering module, a hybrid prediction model unit, a meta-learning and field adaptation module, a federal learning coordination module, a digital twin sample generation module and a dynamic decision engine unit.The application has the following advantages: through the collaborative mechanism of the meta-learning and field adaptation module, a model-agnostic meta-learning algorithm is used to train a cross-brand general feature extractor;different brand data distributions are confused by combining an adversarial field adaptation network;the "data gap" caused by the definition of sensor parameters and the difference in sampling frequency in traditional modeling is broken through;the model is collaboratively trained under the premise that the data of each brand is not out of the local;the global model containing the commonness of cross-brand faults is generated;and the "data island" problem caused by commercial security requirements in the industrial scene is solved.

The invention belongs to the technical field of fuel cells, and particularly relates to a high-power closed cathode air-cooled fuel cell metal bipolar plate, an electric pile, a system and a design method.The metal bipolar plate specifically comprises an anode plate, a cooling plate and a cathode plate which are arranged in an upper-layer structure, a middle-layer structure and a lower-layer structure; a plurality of anode runners for anode fuel gas to flow are arranged in the anode plate; a plurality of cathode runners for cathode reaction air to flow are arranged in the cathode plate; a plurality of cooling straight flow channels for cooling gas to flow are formed in the cooling plate; the effects of high power density and low cathode voltage of the fuel cell are achieved by a regionalized metal bipolar plate configuration, and the problems of high parasitic power consumption and the like of an air compressor caused by low power density and large cathode voltage drop of the fuel cell under a high-power working condition in the prior art are effectively solved.

The application discloses a method for designing and controlling relative motion configuration of spacecraft formation in the Earth-Moon libration point orbit, and belongs to the technical field of spacecraft orbit dynamics and control. The method firstly constructs a double-level dynamics model composed of a circular restricted three-body problem model and a high-precision ephemeris model, and defines the orbit amplitude difference and phase difference as configuration parameters; then, according to different combinations of the orbit amplitude difference and phase difference, three types of natural relative motion configurations are set, periodic orbits are quickly generated under the circular restricted three-body problem model, and multiple turns are corrected by using the high-precision ephemeris model and two-stage multiple shooting; for the controlled tasks of fixed position, plane and space encirclement, a hierarchical constraint model is established, and a two-stage optimization strategy is adopted to solve the control pulse. The application realizes efficient design and stable control of the formation configuration in a complex dynamics environment, and is suitable for various libration point orbit tasks.

The application discloses a kind of based on activated sludge heterotrophic bacteria cultivation and sulfur autotrophic directional domestication bacterial agent and wastewater treatment method, the bacterial agent mainly with municipal wastewater treatment plant surplus activated sludge as raw material, first through heterotrophic bacteria cultivation to improve sludge activity and biomass, then under the synergistic effect of elemental sulfur, sodium bicarbonate and nitrate, sulfur autotrophic denitrification directional domestication is carried out, and efficient, stable, impact-resistant composite denitrification bacterial population is formed;The mature bacterial population after separation, purification, mixed expansion is made into bacterial agent, directly added to actual wastewater treatment project, to realize the depth denitrification of wastewater.The application does not depend on single strain, does not use expensive reagent, completely from ordinary activated sludge, using two-stage precise domestication process, retains the natural synergy of bacterial population, has the advantages of fast start, low cost, salt and low temperature tolerance, without additional carbon source, stable operation, etc., can significantly improve the denitrification efficiency and stability of wastewater treatment system.

The application provides a kind of unmanned aerial vehicle landing control method and device, it is related to unmanned aerial vehicle technical field.The unmanned aerial vehicle landing control method includes: the video stream information including nested positioning label and direction positioning label is input into neural network model, obtains the output value including first center point coordinate value, second center point coordinate value, third center point coordinate value, the width pixel value of nested positioning label and the height pixel value of nested positioning label, determines the angle between unmanned aerial vehicle and landing landmark and actual displacement difference by these output values, generates the control instruction of unmanned aerial vehicle according to the height of unmanned aerial vehicle, angle and actual displacement difference, controls unmanned aerial vehicle landing.The technical scheme of the application only needs to input video stream information into neural network model to obtain output value, the number of output value is less, the time for determining angle and actual displacement difference by less output value is shorter, so that the time for controlling unmanned aerial vehicle landing is shorter, and the efficiency of controlling unmanned aerial vehicle landing is improved.

The application discloses a password usability evaluation method and device, equipment, a storage medium and a product, relates to the field of information security technology, and discloses a password usability evaluation method, which comprises the following steps: determining whether a to-be-tested password meets the use demand in a current use scene, independently evaluating the to-be-tested password meeting the use demand, and obtaining an independence evaluation result; determining a use usability evaluation result of the to-be-tested password based on the operation simplicity of a participant involved in a use auxiliary stage of the to-be-tested password and the performance compliance of the to-be-tested password in an official use stage; and comprehensively determining a password usability evaluation result of the to-be-tested password by combining the independence evaluation result and the use usability evaluation result. The application realizes the evaluation of the password usability.

The invention discloses an ecological compensation method and system for cross-basin water diversion, equipment and a storage medium, and belongs to the field of water conservancy and hydropower. According to the method, benefit related parties such as a water receiving party, upstream and downstream parties and the like are clarified through a market mechanism, water resource changes under multiple working conditions are accurately simulated by means of a water circulation physical model and natural laws, and the problem of data and quantization deviation is solved by combining objective data to quantify profit and loss of each party; the cooperation income and the compensation amount of different cooperation combinations are analyzed through the Shapley value, manual intervention is reduced, and the calculation efficiency of a complex scene is improved; and the cooperation income and the compensation amount are fed back and adjusted through water price regulation and control, and finally the ecological compensation scheme is determined through income verification, so that objective, high-landing-efficiency and accurate-quantification ecological compensation scheme determination is realized.

The application discloses a camera auxiliary point arrangement method and system for intelligent patrol of a transformer substation, and comprises the following steps: acquiring and preprocessing multi-source heterogeneous three-dimensional data, constructing a camera point arrangement multi-objective optimization model, selecting an intelligent optimization algorithm to solve an initial point arrangement scheme, and performing three-dimensional visual interactive adjustment, real-time checking and outputting standardized engineering results. According to the power grid technical specification, the application sets constraint conditions, and all installation parameters meet engineering requirements, so that safety hazards are avoided. Through three-dimensional data fusion and space index construction, the iteration efficiency of the intelligent optimization algorithm is optimized. Through the construction of the multi-objective optimization model, the intelligent optimization algorithm and the fitness function, the precise control of the point arrangement parameters is realized, the scene adaptation capability is improved, the equipment procurement and construction cost is reduced by 15%-25%, the point arrangement period is shortened by at least 60%, the single point position query time is less than or equal to 50 ms, and the solving time is less than or equal to 5 minutes.

The invention relates to an unmanned aerial vehicle landing control method and system and a related device. The method comprises the following steps: determining attitude information of an unmanned aerial vehicle after landing; and based on the attitude deviation corresponding to the attitude information, controlling the unmanned aerial vehicle to return to the center, or controlling the unmanned aerial vehicle to land again. According to the method, after the unmanned aerial vehicle lands, the camera on the platform shoots the high-definition image, the attitude deviation of the unmanned aerial vehicle is determined, and the attitude of the unmanned aerial vehicle is judged without frequently operating a centering mechanism by automatically triggering a re-flight program, so that the loss of the centering mechanism to the unmanned aerial vehicle is reduced, and the landing efficiency of the unmanned aerial vehicle is improved.