40results about How to "Reduce performance indicators" patented technology

The invention discloses a method for selecting a multi-objective immune optimization multicast router path, which mainly solves the problem of the optimization of multicast routers. The method has the following steps of: (1) determining an optimized target to generate a network model, and setting running parameters to generate an initial population; (2) eliminating an individual path loop; (3) calculating the individual target value to generate a current non-dominant population; (4) judging finishing conditions, if the finishing conditions are met, the current non-dominant population is output, or else, carrying out step (5); (5) calculating the individual crowding distance of the current non-dominant distance to generate an active population; (6) carrying out cloning and local searching operation on the active population; (7) carrying out recombination, variation and local search operation on the cloned population; (8) combining the current non-dominant population with the populations obtained in the steps (6) and (7) to eliminate the individual path loop; (9) calculating the individual value to refresh the current non-dominant population, and carrying out the step (4). The invention has the advantage of providing a flexible optimization scheme and is suitable for selecting the multicast router path.

The invention discloses a flameless combustion heat accumulating type flat flame combustion nozzle. A combustion nozzle body is internally provided with an air or smoke gas passage, a porous heat accumulator, a combustion cavity, a gas pipeline and an ignition device, wherein the tail end of the air or smoke gas passage is provided with a tangential air inlet duct positioned along the tangential direction of the circumferential combustion cavity, and the air or smoke gas passage is connected with the combustion cavity through the tangential air inlet duct; the tail end of the gas pipeline is provided with a flame combustion gas pipe and a flameless combustion gas pipe which are parallel and respectively controlled by a flame combustion control valve and a flameless combustion control valve, and the aperture of a flameless combustion gas spray orifice positioned on the tail end of the flameless combustion gas pipe is smaller than that of a flame combustion gas spray orifice positioned on the tail end of the flame combustion gas pipe. The flameless combustion heat accumulating type flat flame combustion nozzle has high energy utilization efficiency and good furnace temperature uniformity and can greatly reduce the discharge amount of NOX; fuel is sprayed at high speed through the necking spray orifice, thereby effectively controlling the flame temperature and being beneficial tothe sufficient combustion of the fuel; and in addition, the flame sprays into a furnace cavity with a very short spraying distance so as not to spray to parts inside the furnace cavity.

The invention discloses a single-arm mechanical arm self-adaptation controller and control method based on the output position. The controller comprises a first comparator unit, an observer unit, a backstepping first updating unit, a backstepping first approaching unit, a backstepping first arithmetic unit, a second comparator unit, a backstepping first sub-controller unit, a third comparator unit, a fourth comparator unit, a backstepping second updating unit, a backstepping second approaching unit, a backstepping second arithmetic unit, a fifth comparator unit, a backstepping second sub-controller unit, an ADP updating unit, an ADP approaching unit, an ADP arithmetic unit, an ADP first sub-controller unit, an ADP second sub-controller unit and a sixth comparator unit. According to the single-arm mechanical arm self-adaptation controller and control method based on the output position, the stability of a single-arm mechanical arm is guaranteed, meanwhile, the performance index of a system is reduced, the control cost of the system is reduced, and high use and popularization value is achieved.

The invention relates to a making method of a functional fiber bulked yarn fabric blanket. The making method comprises the steps that continuous functional fiber endless tows are continuously blown and sprayed through high-speed air flow to be in the screw type bulked state, and functional fiber bulked yarns and the endless tows made of the same raw materials as the functional fiber bulked yarns are merged in an over-feed mode to form bulked composite yarns; the bulked composite yarns are used as weft yarns to be interwoven with the endless tows to form the fabric blanket, and thick fiber blankets with various standards can be formed by weaving. The continuous functional bulked yarn blanket not only maintains the advantages of chopped fiber blankets, but also adds new functions, defects of short fiber punched felts are overcome, and the whole mechanical property of a fiber net is improved. The functional fiber bulked yarn fabric blanket can be directly applied to materials for thermal insulation, filtering, adsorption, abrasion and the like, can also be used as fiber prefabricated bodies for composite materials, gives full play for mechanics bearing performance and functionality advantages, and has wide application prospects.

The invention relates to a graph on-line splicing method and system for laser processing of a large format, and solves the problem that the splicing accuracy of an existing on-line splicing method cannot meet the processing requirement. The graph on-line splicing method comprises the following steps of 1) dividing a to-be-processed graph into N sub graphs, and acquiring the coordinate of the center point of each sub graph and the smallest rectangular region containing each sub graph; 2: turning on an indication power supply, enabling light beam emitted by the indication power supply to reach an X to-be-processed area, and scanning the boundary of the X to-be-processed area; 3) observing the X to-be-processed areas by a coaxial measuring unit, acquiring the images of the X to-be-processed areas, and obtaining the actual bounding box of the X to-be-processed areas by the control unit according to the acquired image; 4) comparing a theory bounding box with an actual bounding box; 5) adjusting the positions of X sub graphs in the control unit; and 6) completing the graph scanning of the X processing areas; and 7) repeating the step 2 to the step 6.

The invention relates to a structure of radio frequency coaxial cables, in particular to a novel structure of radio frequency coaxial cables suitable for testing. The conventional structure of radio frequency coaxial cables has defects of poor testing precision and short practical service life. The novel structure of the radio frequency coaxial cables suitable for testing comprises a core and is characterized in that: an insulator, an outer conductor 1, an outer conductor 2, a sheath 1, a spring braid layer, a sheath 2, an intermediate layer, and a sheath 3 are wound on the core sequentially. The spring structure is adopted and sheathes and a nylon rayon mesh are tightly connected through an adhesive layer, so the influence of external force or torsion on internal cables is basically eliminated, the precision of tested cables is guaranteed, influence on the performance index of tested cables because of testing error of tested cables can be reduced, the mechanical bent service life of tested cables can be prolonged because of the outer protection structure of cables.

The invention discloses an adaptive optimal output feedback controller structure for two interconnected synchronous generator systems and a realizing method thereof. The controller structure is used for controlling a generator system I and a generator system II. The structure firstly aims at a condition of state observing incapability in practical application. A fuzzy observer is designed for estimating the power angles and the power angle speeds of the two interconnected synchronous generator systems and the mechanical frequencies of the generators, thereby reducing the control cost of the two interconnected synchronous generators, and overcoming defects in traditional state feedback control. Afterwards, a traditional adaptive back-stepping method is used for designing an adaptive back-stepping controller, and a performance index function of the two interconnected synchronous generator systems is estimated through neural network technology, and furthermore an optimal controller of thesystem is designed. Through cooperation of the adaptive back-stepping controller and an approximate optimal controller, the control method can ensure stable operation of the two interconnected generator systems and furthermore can reduce the performance index of the system.

The invention discloses a DC offset compensation system, comprising: a signal processing circuit, a first compensation module, a second compensation module and a third compensation module. The first compensation module is configured to compensate a DC offset of a second sub-processing circuit in the signal processing circuit, so that a first DC offset value output by the signal processing circuitis less than or equal to a first threshold; the second compensation module is configured to compensate the DC offset of a first sub-processing circuit based on the first DC offset value, so that a second DC offset value output by the signal processing circuit is less than or equal to a second threshold; and the third compensation module is configured to compensate the DC offset of the signal processing circuit based on the second DC offset value, so that a third DC offset value output by the signal processing circuit is less than or equal to a third threshold. The invention further discloses aDC offset compensation method.

The invention relates to a novel distribution transformer, which combines the structural advantages of the existing shell-type transformers and core-type transformers and can completely replace the existing distribution transformers. The cost is greatly reduced, and the passing rate of burst short circuit test is basically 100%. The windings of the transformer have a good cooling effect and strongoverload capability. The transformer has large limit capacity and is convenient to transport. The advantage in ultimate capacity is superior to that of the shell-type transformer. When vertical transportation is inconvenient, the transformer can be inverted for transformation to reduce the height of transportation. The transformer has the advantages of compact structure, small size, low overall weight, compact structure, easy lead installation, uniform capacitance distribution, reliable insulation, and strong lightning resistance and switching overvoltage capability.

An internal pressure self-sealing rotary compensator comprises a fixed pipe (1) and a rotatable pipe (2) and is characterized in that the end of the fixed pipe is provided with a conical opening, the conical opening end of the fixed pipe is connected with a sealing seat (3), and an inner cavity of the sealing seat is provided with a rotating seat (4) protruding inwards; a ring surface sealing element (5) is mounted on the outer side of the rotating seat and is fixed in the ring surface sealing cavity through a gland (6); an end face self-sealing piece (7) is installed on the inner side of the rotating base, the outer side face of the end face self-sealing piece abuts against an arc-shaped annular convex face (8) on the rotatable pipe, the outer section of the arc-shaped annular convex face is in smooth transition with a first outer conical face (9) at the end of the rotatable pipe, and the inner section of the arc-shaped annular convex face intersects with the outer surface of the rotatable pipe. The first outer conical surface is connected with a second outer conical surface (10), and the taper of the second outer conical surface is matched with that of the conical opening in the end part of the fixed pipe. The device is simple in structure and more convenient to manufacture. Performance indexes of the end face sealing piece can be reduced, and production cost is reduced.

The invention relates to a motor stator punching plate. Winding slots are alternately formed in the stator punching plate through space teeth along the circumference, and the number of the winding slots is the odd times of four (starting from the five times of four), but does not include the common multiples of four and six. The motor stator punching plate can meet a variety of industry standards, the use ratio of silicon steel sheets is greatly increased, and the consumption of copper wires is significantly reduced. Therefore, the production cost is greatly reduced, and the requirements of material saving and consumption reducing are achieved.

The invention provides a special modification stabilizer for cycloalkyl heavy traffic asphalt. The special modification stabilizer is prepared from a cross-linking agent, an accelerant, an activatingagent, an inorganic filling agent and a viscosity improver; the dosage of each component is as follows in parts by weight: 10 to 90 parts of the cross-linking agent, 1 to 50 parts of the accelerant, 1to 50 parts of the activating agent, 5 to 95 parts of inorganic soil and 5 to 90 parts of the viscosity improver, wherein the cross-linking agent is prepared from sulfur, sulfide and calcium petroleum sulfonate and the mass ratio of the sulfur to the sulfide to the petroleum sulfonate is 1 to (0.2 to 0.5) to (0.1 to 0.3); the adding amount of the sulfide and the petroleum sulfonate is determinedbased on the sulfur. By adopting the modification stabilizer provided by the invention, high temperature and low temperature performance of modified asphalt prepared by the cycloalkyl heavy traffic asphalt is remarkably improved, and the attenuation of segregation and performance indexes of the modified asphalt prepared by the cycloalkyl heavy traffic asphalt is reduced; the storage stability is improved and the high-temperature viscosity is reduced; the construction workability of the modified asphalt prepared by the cycloalkyl heavy traffic asphalt is improved and the viscosity at 135 DEG Cis remarkably reduced.

The invention belongs to the technical field of steel production, and particularly relates to a high-strength seamless steel tube for an integrated drawing automobile axle housing. The high-strength seamless steel tube comprises the following components in percentage by weight: 0.145% of C, 0.275% of Si, 1.425% of Mn, 0.0335% of V, 0.03% of AL, 0.013% of P, 0.07% of S, and 98.0085% of Fe and impurities. The process comprises the following steps of: smelting, deoxidizing, alloying, refining and continuous casting in a converter or an electric furnace, protecting casting, tube blank sawing, heating, adding of a re-line temperature monitor in perforating, adding of a re-line temperature monitor in a rolled tube, online micro-control cooling, adding of temperature measurement in the process, micro-tension reducing and intermediate cooling bed, adding of a re-line temperature monitor in the process, cooling bed air cooling, straightening and saw cutting, and sampling inspection, flaw detection, surface inspection, mark spraying warehousing. On the premise that the axle machining quality is met, online normalizing process or heat treatment process links are reduced, and the comprehensive performance of the product is improved.

The invention relates to an optimization technology-based unmanned aerial vehicle positioning method capable of covering robot signals, provides the concept of agriculture and forestry robots and the demand market of the agriculture and forestry robots, and establishes a multi-constraint complex semi-definite programming model by using the optimization technology aiming at the defects of the agriculture and forestry robots in the aspects of signal sources and positioning functions. Through the structure of a multi-constraint complex semi-definite programming model, the model is decomposed into a multi-constraint simple semi-definite programming problem model and a sequence maximum meta problem model. The maximum element problem of the sequence is solved by using a cyclic strategy, and an efficient random algorithm for solving multi-constraint semi-scaling is designed. The method is used for solving the problem that in agricultural and forestry production, unmanned aerial vehicle positioning faces signal loss of covering robot signals and the like.