12results about How to "Achieve structural optimization" patented technology

The invention discloses an inductive process mining method and system based on local structure optimization. The method comprises the following steps: acquiring an event log executed by an actual business process; mining an original process tree model from the event log, searching and identifying an inaccurate structure in the original process tree model, and extracting a corresponding sub-log; iteratively optimizing the inaccurate structure in the sub-log to obtain a new sub-structure set; the new substructure set is combined by a Cartesian product to obtain a new substructure combination, a new substructure in the new substructure combination replaces a corresponding inaccurate structure in the original process tree model to obtain a result process tree model, the result process tree model is converted into a Petri net model, quality indexes fit and precision of the model are evaluated, a comprehensive quality index F-measure is calculated, and a final process tree model is obtained. And finally, selecting a Petri net model with the highest F-measure as output. According to the method, the model mining efficiency is improved, possible losses are reduced, and it is guaranteed that the high-quality structure is not affected while the inaccurate structure in the process model is improved.

The invention provides an ultrasonic transducer and a four-dimensional ultrasonic imaging method and device, and relates to the technical field of medical equipment. The ultrasonic transducer comprises an array element, a frame, a working module and an excitation channel, a plurality of array elements are provided; the frame comprises a mounting part, and the array elements are mounted on the mounting part; the frame is of a deformable structure; the number of the working modules is multiple, and each working module comprises the same number of array elements. A plurality of excitation channels are provided, and each excitation channel corresponds to a plurality of working modules; the excitation channel is used for transmitting an excitation signal to the working module so as to obtain a sub-image. The relative position relation between the array elements can be adjusted through torsional deformation of the frame, so that a larger scanning range can be obtained, scanning of a complex environment is achieved, and the imaging depth and resolution are improved; the number of the excitation channels is multiple, and each excitation channel corresponds to multiple working modules, so that the number of the excitation channels is reduced, and the structure optimization of the excitation channels is realized.

The invention belongs to the technical field of direct-current high-voltage GIS insulation, and relates to a basin-type insulator of a high-voltage direct-current GIS / GIL and an optimization method, system and device of the basin-type insulator. Modeling the insulator structure to obtain an insulator structure model, modeling the shielding case to obtain a shielding case structure model, and establishing a multi-physics field coupling model according to the physics field boundary condition and the initial value of the basin-type insulator under the actual working condition in combination with the GIS insulation structure two-dimensional axisymmetric model; and substituting the insulator structure model and the shielding case structure model into a multi-physics field coupling model to solve surface charge distribution and electric field distribution of the basin-type insulator, and selecting an optimal basin-type insulator structure according to the surface charge distribution and electric field distribution of the basin-type insulator. The structure of the basin-type insulator can be optimized, the optimized structure of the basin-type insulator can relieve concentration of local electric stress under the working condition of high-voltage direct current, long-term insulation is guaranteed, reliability of long-term insulation is improved, and safe and stable operation of a direct-current GIS is guaranteed.

The invention relates to the technical field of steel pipe manufacturing, and discloses an extra-large-wall-thickness stainless steel seamless steel pipe for an ocean platform, and the steel pipe is manufactured by adopting the following manufacturing method: step A, smelting; step B, die casting; c, forging, wherein the steel ingot is forged into a round billet; d, perforating and rolling: heating the round steel, and perforating to prepare a hollow billet; e, heat treatment, wherein fine grain treatment is conducted on the pierced billet; f, cold rolling and passivation are conducted, specifically, the steel pipe subjected to heat treatment is fed into a cold-rolling mill for finished product rolling; g, inspection is conducted, specifically, the steel pipe is subjected to final inspection; the steel pipe comprises, but is not limited to, about 0.25% of Co, about 0.15% of V, about 0.10% of Cu and about 0.045% of P. By adopting a refining process of'three-removal of molten iron and intermediate frequency furnace pre-solution, AOD, RH and die casting 'and combining an RH vacuum treatment technology, the dehydrogenation rate is more than 80%, and the content of harmful elements is effectively controlled, so that the corrosion resistance of the steel pipe is remarkably improved.

The invention discloses a design method of a multi-stage thermoelectric cooler adaptive to a multi-component bismuth telluride temperature zone. The design method comprises the following steps: preparing bismuth telluride materials with various components and different thermoelectric properties; testing the change relation of the thermoelectric parameters of the multiple groups of bismuth telluride materials in a near room temperature range along with the temperature; based on a test result, screening the bismuth telluride material with the highest thermoelectric figure of merit in different temperature zones, drawing a curve of thermoelectric parameters of the bismuth telluride material changing along with the temperature, and fitting to obtain a high-order term expression taking the temperature as a variable; setting an initial value of the logarithm and an initial value of the grain size of each layer of element of the multistage thermoelectric refrigerating unit, and substituting the obtained fitting expression into a heat balance equation set of the multistage thermoelectric refrigerating unit according to a temperature zone for analysis; and solving a heat balance equation set by iterating the logarithm and the grain size of each layer of element to obtain an optimal design parameter and finish the design. By means of the method, structural optimization of the multistage thermoelectric cooler can be achieved, material temperature zone adaptation and structural parameter collaborative optimization are achieved, and the refrigeration temperature difference and the refrigeration power are remarkably improved.

The invention relates to the technical field of constructional engineering, in particular to a design method of a multilateral asymmetric pile foundation bearing platform, which comprises the following steps: collecting information data of a multilateral asymmetric pile foundation bearing platform engineering site, and establishing a three-dimensional finite element model of the multilateral asymmetric pile foundation bearing platform according to the collected information data; performing numerical simulation by utilizing the three-dimensional finite element model to obtain a stress-strain distribution cloud picture of the polygonal asymmetric pile foundation bearing platform, and identifying key areas in the stress-strain distribution cloud picture under different working conditions; judging a main failure mode of the multilateral asymmetric pile foundation bearing platform according to the identified stress and strain distribution characteristics of the key area, and selecting a corresponding design model according to the main failure mode; according to the selected design model, recalculating the number and the arrangement mode of the reinforcing bars required by the multilateral asymmetric pile foundation bearing platform; according to the method, the bearing capacity and safety of the bearing platform are improved, and the material cost is effectively controlled.

The utility model relates to the technical field of automobile wire harness, specifically relates to a new energy vehicle waterproof wire harness connector, including connector male, connector female seat and waterproof mechanism, waterproof mechanism includes abutting platform, plug -in ring, first sealing washer, threaded bush, protective sleeve and alignment device, and the connector male is installed on the connector female seat through alignment device cooperation when connecting, and the abutting platform carries out spacing abutment when plugging, and the first sealing washer of installation of the sleeve on the plug -in ring can slide into the sealing of the cooperation cavity on the connector female seat, further sliding the protective sleeve of wire harness outside of the connector male is prearranged and is connected with threaded bush screw thread, realizes the connection of connector male and connector female seat Anti -loose processing, the waterproof treatment of the connector male and the connector female seat plug -in after through the first sealing washer in the structure of the application, and the structure is more stable compared with the waterproof of the existing bonding structure, and the anti -drop -out effect is also better, and then can realize the structure optimization, is favorable to the promotion connector overall waterproof performance.

The present invention relates to a method for optimizing the structure of mixed coal washing and coal blending based on a genetic algorithm, which solves the defect that it is difficult to determine the best coal blending scheme in the process of mixed coal blending compared with the prior art. The present invention includes the following steps: constructing a multi-objective random optimization model for the structure of mixed coal washing and coal blending; setting target parameters and their value ranges for optimization of the multi-objective random optimization model for the structure of mixed coal washing and coal blending; solving the multi-objective random optimization model for the structure of mixed coal washing and coal blending; and obtaining the optimization results of the structure of mixed coal washing and coal blending. The present invention adopts a non-dominated sorting genetic algorithm with an elite strategy for multi-objective optimization. By combining non-dominated sorting, elite strategy and congestion calculation, it can effectively solve the multi-objective optimization problems in the field of coal blending structure optimization, improve the global search capability and convergence accuracy of the algorithm, and achieve the optimization of the structure of mixed coal washing and coal blending.

This invention discloses an automatic vehicle modal extraction method and related equipment. The method includes: obtaining basic order information of the first-order torsional mode and the first-order bending mode corresponding to the basic model, and basic model displacement information of the target point, respectively, through modal simulation analysis; obtaining modal calculation information corresponding to multiple parametric models through simulation analysis; calculating the similarity information between the displacement information of the parametric models corresponding to different parametric models and the displacement information of the basic model; and obtaining the torsional frequency information and torsional order information of the parametric models corresponding to the first-order torsional mode, and the bending frequency information and bending order information of the parametric models corresponding to the first-order bending mode, based on the similarity information. The method provided in this application can significantly reduce the post-processing time of simulation results, achieve automatic identification of modal information of parametric models, and improve simulation efficiency in the design phase.

The invention relates to a longitudinal double-roller type continuous coal mining process and equipment for a stepped working face of a strip mine. Comprising a mounting base part, a transfer part, a roller cutting part, a walking part and an intelligent navigation and posture monitoring system. The installation base part is composed of a frame type rack and an installation platform and used for supporting the whole machine. A scraper conveyor is adopted in the transfer part, a bottom coal cleaning shovel plate and a spiral roller are arranged at the tail end, and efficient conveying of coal briquettes and bottom coal cleaning can be achieved. The cutting angle of the roller cutting part is adjusted through the main rocker arm, the auxiliary rocker arm and the hydraulic system to adapt to the heights and hardness of different coal seams, and the flexibility and adaptability of coal mining operation are improved. The walking part is of a four-track structure and is provided with an intelligent control system, the angle of the tracks can be automatically adjusted to adapt to complex terrains, and therefore the walking stability of the equipment is enhanced. The system has the advantages that by optimizing the structural design, the intelligent control level is improved, equipment abrasion is reduced, the coal mining efficiency is improved, and the system is suitable for continuous coal mining operation of the complex terrain of the strip mine.

The invention discloses a polysaccharide composition for inhibiting dog and cat intestinal stink-causing bacteria and promoting short-chain fatty acid generation and application, and relates to the technical field of pet health care. The polysaccharide composition is composed of fucoidan, aloe polysaccharide and yeast glucan according to a specific proportion, and through a synergistic effect, proliferation of intestinal tract core stink-causing bacteria (such as desulfurization vibrio, bacteroides, fusobacterium and the like) is inhibited in a targeted mode, and generation of excrement stink metabolites such as amines, sulfides and indoles is reduced; and meanwhile, the proliferation of acid-producing bacteria (such as bifidobacteria) and the generation of short-chain fatty acid (SCFAs) are remarkably promoted. The SCFAs can maintain the acid-base balance of intestinal tracts, enhance the barrier function of the intestinal tracts, inhibit the growth of harmful bacteria and improve the health of the intestinal tracts. The polysaccharide composition disclosed by the invention is particularly suitable for a high-protein diet environment for dogs and cats, and the intestinal flora structure is remarkably optimized and the intestinal health is improved while the excrement odor is effectively reduced.

The utility model provides a power module for a three-level converter and the three-level converter. The power module includes: a heat dissipation plate having a first heat dissipation surface; a first IGBT unit disposed on the heat dissipation plate and including first to third IGBT groups, the first IGBT group including two or more first IGBT modules connected to each other in parallel, the second IGBT group including two or more second IGBT modules connected to each other in parallel, the third IGBT group including two or more third IGBT modules connected to each other in parallel, and the first IGBT unit including first to third IGBT groups connected to each other in parallel; each IGBT module includes two IGBTs connected in series with each other, and the first to third IGBT modules are linearly arranged on the first heat dissipation surface along the length direction of the heat dissipation plate. According to the power module provided by the utility model, the output power can be improved under the same boundary dimension.