71results about How to "Balanced reliability" patented technology

A high melting point exothermic welding flux for a copper-clad steel / copper grounding grid belongs to the metal welding field. The existing exothermic welding flux for welding copper-clad steel has the defects of lower melting point of the metal on a joint than the temperature of a base material, poor structural uniformity and the like. The exothermic welding flux comprises the following components by weight percent: 50-60% of copper oxide, 9-10% of aluminium metal powder, 20-35% of copper metal powder, 3-4% of fluorite powder, 2-3% of tin metal powder, 0-5% of nickel metal powder and the balance alloy powder. The exothermic welding flux has the melting temperature close to that of the base metal, and can assure that a grounding body formed by the joint and the base material has even reliability.

The invention relates to a bit priority mapping method in high-order modulation. The method comprises the following steps: dividing a bit sequence to be modulated into two or more than two areas with different reliability levels according to corresponding different reliability levels of mapping bits of constellation points; according to a high-low position sequence, writing a high-position bit to be mapped to the area with relatively high reliability; and writing a low-position bit to be mapped to the area with relatively low reliability level. The method can maximizedly balance the reliability of the coding word bit and is simple to realize; and the method is combined with Chinese invention patent application 'a bit priority selection method in high-order modulation' previously provided by an applicant, can obtain higher link throughput performance and reduce time delay of transmission in a hybrid automatic repeat request (HARQ) mode compared with the prior art.

The embodiment of the invention discloses a data transmission method, a data transmission apparatus and a data transmission device based on an Ethernet udp protocol, and a computer readable storage medium. The method comprises the following steps: a sending end sends a file information packet containing to-be-transmitted data size through a udp protocol format, divides the to-be-transmitted data into a plurality of grouped data packets according to a value of the number of sequences and the sequence size fed back by a receiving end, divides one grouped data packet into a plurality of sequencepackets and sends the sequence packets, and sends a grouped ending packet after completing sending of each grouped data packet; in a transmission process of one grouped data packet, when the receivingend confirms that an unreceived sequence packet exists according to a sequence number of each sequence packet, the receiving end sends a retransmission request containing packet loss information, andthe sending end retransmits the corresponding sequence packet according to the packet loss sequence number in the retransmission request. The method, the apparatus, the device and the medium providedby the invention realize that the Ethernet udp protocol lose data under a congested network environment no longer, meanwhile, can transmit large-capacity, real-time and reliable data under the non-congested environment.

The invention discloses a tree structure-based data aggregation method with reliability assurance. The aggregation method comprises the following steps: generating a tree creating module, an in-tree data aggregation module and a data detection module, and generating a tree revising module. The aggregation method adopts the tree structure to realize fast aggregation of data in the network, ensure that data can be conveniently found and used in the entire network, reduce the communications of the network in the data aggregation process and prolong the service life of the entire network; and the data detection method and the method of generating tree revise are both adopted and the phenomenons such as the damage and death of node can be monitored and found, thus increasing the accuracy and effectiveness of data transmission in the network and the reliability of the entire network.

The present invention relates to the radio communication field and discloses a method and a system for high-speed downlink shared channel coding multiplexing. In the process of HARQ bit combination, the method uses read-in in order and skip read-out, read-in in arrangement and read-out in row or read-in in row and read-out in arrangement which enhances the interweaving effect. A plurality of parameter designs is advanced and the better transmission effect can be obtained when a second velocity matches. The bit sequence obtained by dividing the physical channel is divided into three sequences which are separately interwoven by the interweaving machines with the same size; on one hand, the requirements of 64QAM is met, on the other hand, the compatibility is better. A plurality of plans for constellation rearrangement is advanced, which is used in HARQ reemission or transmitted before or reemits difference output bit sequence; in this way, the reliability of every bit is equal and the overall transmission quality is promoted.

The invention discloses a high-reliability control method for low-energy-consumption computer cluster nodes. The method comprises the following steps: grouping the nodes in a cluster; limiting node startup times of the groups at a certain number when the nodes are waken up in order that the node startup times do not exceed a certain threshold; and limiting shutdown times of the node groups during energy-saving scheduling in order that the shutdown times do not exceed a certain threshold. Compared with a conventional unlimited scheduling algorithm, the high-reliability control method has the advantages that total startup and shutdown times of a system can be reduced effectively. Meanwhile, the startup and shutdown times are distributed to the node groups as uniform as possible, so that early failure of a part of nodes due to centralization of the startup and shutdown times on certain nodes is avoided, thereby lowering the energy consumption of a cluster system, and enhancing the reliability of the system at a certain degree. Moreover, the startup and shutdown times of the nodes in the groups can be borrowed, so that certain flexibility is realized, and the energy consumption of the system can be lowered to the maximum extent.

The invention discloses a power distribution network economy reconstructing method considering network loss and reliability. The power distribution network economy reconstructing method considering the network loss and reliability includes an economy optimizing model for summing based on power loss cost due to network loss and power loss cost due to deficiency of power supply amount under a power failure state, an object-oriented power distribution network reliability calculating method matched with the model, a power distribution network economy reconstructing model calculation method based on a biogeography algorithm, and power distribution network economy reconstructing steps based on the core content of the three parts, wherein the power distribution network reliability calculating method includes element collection class, block class, block class tree and power supply route determination methods, and the power distribution network economy reconstructing model calculation method includes the construction of residential suitability indexes, habitat characteristic vectors, transport models and the like. The power distribution network economy reconstructing method considering the network loss and reliability combines the yearly demand not supplied due to the network electricity interruption and the yearly power loss due to the network loss to construct the power distribution network economy reconstructing model which simultaneously considers the power distribution network reliability and network loss, and the model has visual economy characteristics and strives to obtain the most economical network structure. The power distribution network economy reconstructing method considering the network loss and reliability is suitable for reconstructing the power distribution network economy.

The present disclosure relates to a data transmission method, apparatus, and user equipment. The method includes: receiving, by a base station, a transmission direction of a time domain symbol indicated by a slot mode indication information by using a group general physical downlink control channel; determining, according to a transmission direction of the time domain symbol, a transmission time-frequency resource in which a transmission direction conflict occurs, and transmitting a time-frequency resource The time-frequency resource in the uplink-free scheduling resource period allocated to the base station; when the number of transmission time-frequency resources in the transmission direction conflict is less than a preset value, determining available time-frequency resources that can beused for transmitting uplink data in the resource period; The uplink data is transmitted on the available time-frequency resources. The technical solution of the present disclosure can implement thatthe user equipment can make reasonable data transmission decisions for the number and location of conflicting time-frequency resources in the GF resource period, so as to achieve the reliability of data transmission and the balance of delay in the GF resource period.

The invention discloses a constellation map mapping method and a device. The method comprises the following steps: using a part of bits of a bit sequence to be mapped as a first bit sequence, mapping every m bits in the first bit sequence as a constellation point of a constellation map in a sequence from front to back, mapping the bit positioned in the first preset position onto the first preset bit of the corresponding constellation point for every m bits, mapping the bit positioned in the second preset position onto the second preset bit of the corresponding to constellation point (the reliability of the first preset bit is higher than that of the second preset bit), using the other part of bits of the bit sequence to be mapped as a second bit sequence, mapping every m bits in the second bit sequence as a constellation point of the constellation map in a sequence from front to back, mapping the bit positioned in the first preset position onto the second preset bit of the corresponding constellation point for every m bits, and mapping the bit positioned in the second preset position onto the first preset bit of the corresponding constellation point. The reliability of the code letter bits is furthest balanced.

The invention relates to a piston cam engine used in different field of the mechanical engineering, as internal-combustion engines compressors, pumps etc. The cam engine comprises cylinders (13) with pistons (20), a cylindrical tubular 3D cam (3) having a cam groove on the inner cylindrical surface and at least two guides (10) which are guide columns. The cam (3) is composed and includes two coaxial bushes (3a, 3b), each one having corrugated cam section (95a or 95b) from its one side and flange (35) from its other side besides the bushes (3a, 3b) are positioned against each other with its corrugated ends at a distance from each other, and further comprises spacer (37) between the flanges (35) of the bushes (3a, 3b), so as to form the cam groove having a constant section.

The invention discloses a method for manufacturing a [mu]90 composite magnetic powder core. The [mu]90 composite magnetic powder core is made by compounding two or more alloy powders. The alloy powders comprise the following components: mechanically crushed sendust, aerosolized sendust, aerosolized iron-silicon, aerosolized iron-nickel and aerosolized iron-nickel-molybdenum. The manufacturing method comprises the steps of powder compounding, passivation, insulation coating, press molding, heat treatment and surface coating. The alloy powders complement each other in terms of performance so that the performance of the prepared composite powder core is close to that of a commercially available amorphous magnetic powder core. The alloy powders used in the method have the advantages of mature technology, stable performance and relatively low cost so that the prepared magnetic powder core has quite high cost performance and stable characteristics. The composite magnetic powder core with magnetic permeability of [mu]90 has excellent physical properties and magnetic properties. By use of the magnetic powder core prepared by the invention, the development requirements of an existing electronic industry for low-voltage high current, high power density and high frequency are greatly satisfied.

The invention discloses an event-driven wireless sensor network clustering routing method. The method comprises the following steps: establishing a clustering network; constructing a multi-hop transmission link; guiding link search by adopting an estimation cost function, and obtaining a minimum transmission cost link; optimizing the link so as to reduce the link overhead of the link and obtain the minimum link overhead; in the data transmission stage, grading and gathering data importance to a cluster head, and performing emergency judgment at the cluster head end by adopting a sequential method; taking the link with the minimum transmission cost after optimization as a preferred link for data transmission, and sequentially transmitting the data from high to low according to the emergencydegree. The invention also discloses a network clustering routing system. The method has the advantages that the defects of network congestion, increase of node monitoring and processing expenditure,increase of implementation complexity and the like of a packet loss retransmission method in the prior art are overcome. The multi-path redundant transmission method has the advantages that the datatransmission quantity is increased, the congestion of the whole network is easy to form, the transmission cost ratio is low and the like.

The invention discloses a method for manufacturing a [mu]26 composite magnetic powder core. The technical scheme is as follows: after two or more alloy powders from mechanically crushed sendust, aerosolized sendust, aerosolized iron-silicon, aerosolized iron-nickel and aerosolized iron-nickel-molybdenum are selected and are fully mixed, phosphoric acid passivation treatment and drying are performed, then one or more from silicon oxide, aluminum oxide, calcium oxide and magnesia calcinata, sodium silicate, and deionized water are successively added to the alloy powders subjected to the passivation processing and drying for insulation coating, and afterwards, the [mu]26 composite magnetic powder core is prepared after press molding, heat treatment and surface coating. The alloy powders used in the method have the advantages of mature technology, stable performance and relatively low cost so that the prepared magnetic powder core has quite high cost performance and stability. Such oxides as the silicon oxide, the aluminum oxide, the magnesia calcinata and the like and such inorganic materials as the sodium silicate and the like are used for coating adhesion so that the obtained composite magnetic powder core has the advantages of high stability, high reliability, low cost, high safety and facilitated production.

The invention discloses a user response policy optimization method for stimulative power demand response. The method comprises the steps of confirming a resource parameter of a user; building a user cost benefit model and setting an objective function; building a user reliability quantitative model and setting an objective function; combining the two objective functions into a multi-objective optimization model; solving the model by adopting a multi-objective genetic algorithm NSGA-II to obtain a Pareto non-inferior solution set of a user response policy and an optimization result set consisting of user profits and user comprehensive reliability indexes; calculating normalized Euclidean distances between all optimization results and constructed ideal results; and according to the normalized Euclidean distances, sorting the optimization results to form a to-be-evaluated set, evaluating the optimization results in the to-be-evaluated set by adopting an entropy weighting double points method, and finally obtaining an optimal user response policy. According to the method, the economy and reliability of the user are balanced; a reasonable response sequence can be given for multiple users participating in response together; and the method is especially suitable for optimization of the response policies of the multiple users.

The present invention discloses a collaboration communication method for improving frequency spectrum utilization ratio in wireless communication field, for principally resolving a problem that a traditional collaboration communication system reduces the frequency spectrum utilization ratio when dividing time slot. The method is implemented by the following steps: a node A modulates information ofown and information of a node B received at a last time slot by mapping schemes C1 and C2, and orthogonally adds the two-road modulation signals together and broadcast; the node B modulates local information and relay information by mapping schemes C3 and C4, then broadcasts adding modulation symbols; a destination node D demodulates received two-road adding symbols unitedly and obtains information of the node A. The node D obtains the information of the node A by an identical collaboration communication method. The invention ensures a user node to transmit the local information and the relayinformation simultaneously, which improves the systemic frequency spectrum utilization ratio, and further improves error code performance of the collaboration system and ensures communication qualitywithout addition of system complexity.

The invention provides an ICP (Inductively Coupled Plasm) light source flame state detection device and a detection method. The detection method comprises the steps: incident flame light of an ICP light source is attenuated by a light attenuation filter; the attenuated flame light is transmitted to an image sensor; after the attenuated flame light is sensed by the image sensor, a flame image is obtained; the flame image is transmitted to a video frame buffer; the frequency of the flame image is adjusted by the video frame buffer, so the frequency is consistent to the frequency of a processor, accordingly, information of each frame of flame image collected by the image sensor is obtained, and image obtainment is finished; then, the image information is transmitted to the processor, and the image information is subjected to image pretreatment, mode matching and flame state judgment by the processor. The device and the method overcome the defects in the prior art, the detection and analysis can be carried out on the ICP light source flame state, and reliable detection results can be provided for subsequent fully-automatic ignition control of instruments.

An adjustable spacer instrument and method of use in a knee arthroplasty procedure are described. The instrument comprises a first member having a substantially planar upper surface and a second member having a substantially planar lower surface. An angular adjustment mechanism is interposed between the first and second members and is operable to adjust the degree of tilt between the upper surface and the lower surface and includes a releasable lock which can maintain the degree of tilt.

The embodiment of the invention discloses a method for determining a parameter value, and equipment. The method comprises the following steps: if a current moment is a parameter value adjustment moment, determining a target value of target parameters at the current moment according to the target mode, wherein the target parameters comprise at least one of an interference threshold, a signal strength threshold, a channel occupancy rate threshold, a channel busy rate threshold and a distance threshold, and the target mode is one of the following modes: determining a target number according to atarget mapping relationship, the target mapping relationship comprising a mapping relationship between the value of the target parameters and first target information, and the first target informationcomprising at least one of a target duration, a target duration proportion, a value of a counter and a retransmission frequency; and determining a target numerical value according to the initial value of the target parameters and the numerical value adjustment step length, the initial value of the target parameters being related to the first target information. According to the method provided bythe embodiment of the invention, the probability that terminal equipment selects proper resources can be improved.

The invention is based on a handheld power grinder, having a motor located in a housing (10), having a receiving flange (30) receiving a grinding tool (12), and having a motor-driven working shaft (16) as well as a balancing unit (22) that has at least one first and one second balancing mass (18, 20). It is proposed that the first balancing mass is embodied as a movable balancing mass (18), and the second balancing mass is embodied as a fixed balancing mass (20). A receiving flange for a grinding tool (12) and a balancing unit are also proposed.

The invention discloses an optimal configuration method and system for comprehensive energy system equipment. According to the optimal configuration method, the uncertainty of a price scheme and comprehensive demand response is comprehensively considered; an IES collaborative planning model considering IDR uncertainty is provided to realize optimal configuration of comprehensive energy system equipment; the method comprises the following steps: S1, making an electricity price scheme, calculating an IDR considering uncertainty according to the electricity price, obtaining a trust interval of the IDR through an evidence theory, and fitting a load curve based on a trust level constraint; s2, establishing a double-layer collaborative planning model considering equipment optimization configuration and an IES operation strategy on the basis of the electricity price scheme and the load curve; and S3, comparing the total cost of the IES under different electricity price schemes through the double-layer collaborative planning model to obtain an optimal electricity price scheme and an IES optimal configuration result.

The invention provides a method, device and system for assembling electric cores of power batteries. The method comprises the steps of acquiring multiple standard electric cores; acquiring parameters of the standard electric cores and data values corresponding to the parameters; judging whether the data values meet preset conditions or not; and if the data values meet the preset conditions, carrying out module assembly on the standard electric cores corresponding to the parameters. The consistency of each single electric core when batteries are assembled into a pack is improved. Meanwhile, the cost of battery assembly is reduced, the risks such as overcharge or overdischarge in equalization are reduced, the reliability and safety of equalization are improved, and the performance of the combined batteries is greatly improved.

A damping apparatus of a flywheel includes a pair of rotors and a weight. The rotors are provided in the flywheel and rotate along with the flywheel. The rotors receive torsional vibration from an engine through the flywheel, and are configured such that they face each other and are restricted from rotating relative to each other. The weight is provided between the rotors. The weight rotates relative to the rotors in a direction in which the torsional vibration transmitted to the rotors is offset.

The invention provides a directed spanning tree cross-layer communication method based on power control, which is characterized in that the method comprises the following steps: first, establishing adirected spanning tree model based on geographical position information; and second, establishing a cross-layer node transmission power control model and solving an optimal node transmission power solution set. The invention adopts a directed spanning tree algorithm to solve the problem of invalid energy consumption in the data transmission process and controls the transmission power of nodes to reduce the network communication competition intensity. Compared with other schemes in the same field, the invention can effectively balance the energy consumption and the reliability of the network communication and meets the requirement of long-time high robustness of a wireless sensor network.

The invention discloses an optimization method of an air conditioner control strategy, a processor and a memory. The optimization method of the air conditioner control strategy comprises the steps that current values of environment parameters are obtained; an initial control strategy corresponding to the current values of the environment parameters is determined, and the initial control strategy is taken as a current control strategy for controlling the output of an air conditioner; and the current control strategy is regulated and controlled at set intervals, and if a control strategy with the better energy saving performance than the current control strategy within a preset tolerance range of comfort, reliability and energy saving performance appears, the control strategy with the betterenergy saving performance serves as the current control strategy for controlling the output of the air conditioner. According to the optimization method of the air conditioner control strategy, the processor and the memory, the control strategy capable of being adjusted and controlled according to actual conditions is achieved, and therefore intelligence and further energy conservation of the airconditioner control strategy are achieved.

The invention discloses a setting calculation optimization method for a direct feeding traction network distance protection. A power supply system of a traction network is a single-phase power frequency alternating current system; locomotives obtain current through a contact network T; the current flows back to substations through steel rails R after passing through the locomotives; feeder lines in various traction substations are free of an electrical contact in the traction network in a normal operation; each electric locomotive and each power supply arm obtain electricity from one traction substation; and in a double-track section, two lines of an uplink section I and a downlink section II obtain electricity in the same traction substation, but the middle parts or the tail ends of the lines are respectively independent and are not connected with each other in parallel. The method comprises the steps as follows: (1) the section I, the selectivity of the section I is ensured in priority and setting is carried out according to escape of a short circuit at the tail end of each line; and (2) the section II, setting is carried out on the protection range according to the longest distance in various power supply modes.

A data re-transferring method based on bit transformation is disclosed in the present invention. The key point of the method is to exchange the location of each bit constituting data according to selected transformation modes before implementing QAM during each data re-transferring process. The method further comprises: a. presetting the transformation mode representing no bit location transformation at mode 0, modulating and transmitting data with mode 0 during the first data transferring process; b. judging whether it is needed to re-transfer the data after completion of the first data transferring process; if not, going to step a to transfer new data; otherwise, further judging whether all of the selected transformation modes have been used, if not, selecting the next mode in turn, if so, selecting the modes in turn from mode 0 again; and c. exchanging the locations of bits within the symbol according to the selected mode, then modulating and transmitting the processed data. With the method, storage amount can be decreased, balance of reliability of bits within the same data symbol after multiple re-transferring processes can be ensured, in addition, performance of the decoder and reliability of data transmission can be improved.

The present invention relates to an elastic light network multi-link fault probability protection method with minimum fault risk loss, belonging to the optical fiber communication technology field. Through adoption of the asymmetrical business flow minimum fault risk loss probability protection method, the elastic light network multi-link fault probability protection method with the minimum fault risk loss selects a shunt path with the minimum fault risk loss to take as the transmission path of the business flow request to provide efficient probability protection for the business and reduce the network blocking rate, and selects a frequency spectrum block with the maximum frequency spectrum contact ratio through the frequency spectrum distribution method based on the frequency spectrum contact ratio for performing frequency spectrum distribution so as to reduce the frequency spectrum fragments generated by the network. The elastic light network multi-link fault probability protection method with the minimum fault risk loss can effectively reduce the bandwidth blocking rate in the network, realize the balance of the network blocking rate and the reliability, reduce the fault risk loss of the network and improve the frequency spectrum resource utilization rate of the network.

The invention discloses a direct power supply mode traction network distance protection setting calculation optimization method. A power supply system of a traction network is a working frequency single-phase alternating-current system, locomotives take current from a contact network T, and current flows back to power substations through steel rails R after flowing through the locomotives. During normal running, feeds of all the traction substations are free of electric contact in the traction network, and each electric locomotive and each power supply arm take electricity from only one traction substation. In each double-track section, two lines of the uplink section I and the downlink section II take electricity in the same traction substation and are independent and not connected in parallel in the middles or at the tail ends of the lines. The method includes the steps that firstly, on each section I, flexibility of a distance section I is ensured preferentially, and setting is conducted according to the insurance of the total track length; secondly, on each section II, setting is conducted on the protection range according to the longest distance under various power supply modes.

The invention relates to a power distribution information physical system optimization method and system, a storage medium and computing equipment. The method comprises the following steps: establishing a power distribution information-physical system collaborative planning logic architecture fusing a target layer, a planning layer and an operation layer; establishing a power distribution information physical system unified description model based on the logic architecture, and performing double-layer coupling reliability and comprehensive economy analysis and evaluation; and determining a hierarchical collaborative optimization model of the power distribution information physical system on the basis of an analysis and evaluation result, and solving an optimal solution of the collaborative optimization model for fusing system reliability and economy balance by adopting an elite genetic algorithm, thereby realizing power distribution information physical system optimization considering double-layer coupling reliability and comprehensive economy targets. According to the method, under the constraint conditions of ensuring safe interaction and the like, the planning framework can meet double-layer strong correlation and strong adaptability, and the power distribution system can achieve the balance of reliability and economical efficiency; the method can be applied to the technical field of power distribution system optimization.