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240 results about "Hypercube" patented technology

In geometry, a hypercube is an n-dimensional analogue of a square (n = 2) and a cube (n = 3). It is a closed, compact, convex figure whose 1-skeleton consists of groups of opposite parallel line segments aligned in each of the space's dimensions, perpendicular to each other and of the same length. A unit hypercube's longest diagonal in n dimensions is equal to √(n). An n-dimensional hypercube is more commonly referred to as an n-cube or sometimes as an n-dimensional cube.

Nonblocking and deterministic multirate multicast packet scheduling

A system for scheduling multirate multicast packets through an interconnection network having a plurality of input ports, a plurality of output ports, and a plurality of input queues, comprising multirate multicast packets with rate weight, at each input port is operated in nonblocking manner in accordance with the invention by scheduling corresponding to the packet rate weight, at most as many packets equal to the number of input queues from each input port to each output port. The scheduling is performed so that each multicast packet is fan-out split through not more than two interconnection networks and not more than two switching times. The system is operated at 100% throughput, work conserving, fair, and yet deterministically thereby never congesting the output ports. The system performs arbitration in only one iteration, with mathematical minimum speedup in the interconnection network. The system operates with absolutely no packet reordering issues, no internal buffering of packets in the interconnection network, and hence in a truly cut-through and distributed manner. In another embodiment each output port also comprises a plurality of output queues and each packet is transferred corresponding to the packet rate weight, to an output queue in the destined output port in deterministic manner and without the requirement of segmentation and reassembly of packets even when the packets are of variable size. In one embodiment the scheduling is performed in strictly nonblocking manner with a speedup of at least three in the interconnection network. In another embodiment the scheduling is performed in rearrangeably nonblocking manner with a speedup of at least two in the interconnection network. The system also offers end to end guaranteed bandwidth and latency for multirate multicast packets from input ports to output ports. In all the embodiments, the interconnection network may be a crossbar network, shared memory network, clos network, hypercube network, or any internally nonblocking interconnection network or network of networks.
Owner:TEAK TECH

Electric system economic dispatching optimization method based on criss-cross algorithm

The invention discloses an electric system economic dispatching optimization method based on a criss-cross algorithm. The criss-cross algorithm is a brand new swarm intelligence optimization algorithm and mainly comprises a horizontal cross operator and a longitudinal cross operator, wherein a multi-dimensional optimizing space is divided into hypercubes with half of the population size through horizontal cross, and each pair of paired parent particles searches for filial generations in its hypercube subspace and the periphery of the hypercube subspace; arithmetic cross search is executed on different dimensions in the population with a certain probability through longitudinal cross; a domination solution obtained from a moderate solution generated through two kinds of cross through a competition operator will rapidly spread into the whole population in a chain reaction mode, so that the evolution speed is greatly increased. The electric system economic dispatching optimization method based on the criss-cross algorithm has the advantages of being high in global searching ability and high in convergence rate through the criss-cross algorithm, applicable to optimizing a non-linear high-dimensional function and also applicable to achieving large-scale complex optimization in practical engineering.
Owner:GUANGDONG UNIV OF TECH

Robust environment economic scheduling method considering multi-microgrid energy interaction

The invention discloses a robust environment economic scheduling method considering multi-microgrid energy interaction. The method comprises the following steps: in the background of supporting the rapid development of an active distribution network by microgrids, the energy interaction among multiple microgrids is thoroughly considered; a renewable energy generation model and a cost model in themicrogrid are built; an environment economic scheduling model considering multi-microgrid energy interaction is built; the uncertainty of renewable energy and load is considered, a robust environmenteconomic scheduling model considering multi-microgrid energy interaction is built, a Latin hypercube method is adopted for sampling, and the robust environment economic scheduling model is converted to a robust certainty model; and a multi-objective chemotaxis algorithm is adopted to solve the above robust certainty model, and the Pareto optimal solution is found out. The uncertainty of renewableenergy and load prediction is thoroughly considered, the energy interaction among multiple microgrids is considered, the calculation result is closer to the actual situation, the rationality is strong, and reliable basis is provided for the economic operation of the power system.
Owner:YANSHAN UNIV

Nonblocking and deterministic unicast packet scheduling

A system for scheduling unicast packets through an interconnection network having a plurality of input ports, a plurality of output ports, and a plurality of input queues, comprising unicast packets, at each input port is operated in nonblocking manner in accordance with the invention by scheduling at most as many packets equal to the number of input queues from each input port to each output port. The system is operated at 100% throughput, work conserving, fair, and yet deterministically thereby never congesting the output ports. The system performs arbitration in only one iteration, with mathematical minimum speedup in the interconnection network. The system operates with absolutely no packet reordering issues, no internal buffering of packets in the interconnection network, and hence in a truly cut-through and distributed manner. In another embodiment each output port also comprises a plurality of output queues and each packet is transferred to an output queue in the destined output port in nonblocking and deterministic manner and without the requirement of segmentation and reassembly of packets even when the packets are of variable size. In one embodiment the scheduling is performed in strictly nonblocking manner with a speedup of at least two in the interconnection network. In another embodiment the scheduling is performed in rearrangeably nonblocking manner with a speedup of at least one in the interconnection network. The system also offers end to end guaranteed bandwidth and latency for packets from input ports to output ports. In all the embodiments, the interconnection network may be a crossbar network, shared memory network, clos network, hypercube network, or any internally nonblocking interconnection network or network of networks.
Owner:TEAK TECH

Method for optimally designing structure of sliding shaft sleeve based on Kriging model

The invention relates to a method for optimally designing the structure of a sliding shaft sleeve based on a Kriging model. By using an unbiased optimal estimation theory of the Kriging model, the optimal design scheme of the sliding shaft sleeve is predicted and solved. The method comprises the following steps of: determining the basic appearance of the sliding shaft sleeve; analyzing and defining a design variable and a definition domain, which influence the shape of the sliding shaft sleeve; sampling a design space by using a Latin hypercube experiment design method; calculating the stress response of the sliding shaft sleeve by using a finite element method; constructing the Kriging model, and performing accuracy estimation; and constructing a mathematical optimization model, solving the optimal design scheme of the sliding shaft sleeve, and validating by using the finite element method. By using the design variable correlation and variability characteristic of the Kriging model, the unbiased optimal estimation is performed, and guidance is provided for optimal design of the structure of the sliding shaft sleeve. Compared with the conventional method, the method provided by the invention has the characteristics of high calculation speed, optimal scheme design and high reliability.
Owner:WISDRI ENG & RES INC LTD

VLSI layouts of fully connected generalized networks

In accordance with the invention, VLSI layouts of generalized multi-stage networks for broadcast, unicast and multicast connections are presented using only horizontal and vertical links. The VLSI layouts employ shuffle exchange links where outlet links of cross links from switches in a stage in one sub-integrated circuit block are connected to inlet links of switches in the succeeding stage in another sub-integrated circuit block so that said cross links are either vertical links or horizontal and vice versa. In one embodiment the sub-integrated circuit blocks are arranged in a hypercube arrangement in a two-dimensional plane. The VLSI layouts exploit the benefits of significantly lower cross points, lower signal latency, lower power and full connectivity with significantly fast compilation.The VLSI layouts presented are applicable to generalized multi-stage networks V(N1, N2, d, s), generalized folded multi-stage networks Vfold(N1, N2, d, s), generalized butterfly fat tree networks Vbft(N1, N2, d, s), generalized multi-link multi-stage networks Vmlink(N1, N2, d, s), generalized folded multi-link multi-stage networks Vfold-mlink(N1, N2, d, s), generalized multi-link butterfly fat tree networks Vmlink-bft(N1, N2, d, s), and generalized hypercube networks Vhcube(N1, N2, d, s) for s=1, 2, 3 or any number in general. The embodiments of VLSI layouts are useful in wide target applications such as FPGAs, CPLDs, pSoCs, ASIC placement and route tools, networking applications, parallel & distributed computing, and reconfigurable computing.
Owner:KONDA VENKAT

VLSI layouts of fully connected generalized networks

In accordance with the invention, VLSI layouts of generalized multi-stage networks for broadcast, unicast and multicast connections are presented using only horizontal and vertical links. The VLSI layouts employ shuffle exchange links where outlet links of cross links from switches in a stage in one sub-integrated circuit block are connected to inlet links of switches in the succeeding stage in another sub-integrated circuit block so that said cross links are either vertical links or horizontal and vice versa. In one embodiment the sub-integrated circuit blocks are arranged in a hypercube arrangement in a two-dimensional plane. The VLSI layouts exploit the benefits of significantly lower cross points, lower signal latency, lower power and full connectivity with significantly fast compilation.The VLSI layouts presented are applicable to generalized multi-stage networks V(N1, N2, d, s), generalized folded multi-stage networks Vfold(N1, N2, d, s), generalized butterfly fat tree networks Vbft(N1, N2, d, s), generalized multi-link multi-stage networks Vmlink(N1, N2, d, s), generalized folded multi-link multi-stage networks Vfold-mlink(N1, N2, d, s), generalized multi-link butterfly fat tree networks Vmlink-bft(N1, N2, d, s), and generalized hypercube networks Vhcube(N1, N2, d, s) for s=1, 2, 3 or any number in general. The embodiments of VLSI layouts are useful in wide target applications such as FPGAs, CPLDs, pSoCs, ASIC placement and route tools, networking applications, parallel & distributed computing, and reconfigurable computing.
Owner:KONDA VENKAT

Optimization design method for wing types of low-Reynolds-number staggered-floor wings

The invention discloses an optimization design method for wing types of low-Reynolds-number staggered-floor wings, and belongs to the technical field of flight vehicle design. Specific to the staggered-floor wings, the wing types are subjected to parameterization by adopting an NURBS curve fitting method, and 13 control points are selected on front and back wings for control separately; computational grids are generated by adopting an automatic grid reconstruction technology, and numerical value simulation on a flow field is carried out based on a <gamma>-Re<theta> transition model which is coupled with a k-<ohms> SST turbulence model; and optimization is carried out by a combined optimization strategy by combination of DOE sampling and a multi-island genetic algorithm as follows: uniform sampling in a designed space is performed by optimal Latin hypercube design, an most effective design region in the overall design space is captured, and then optimization design is performed in the most effective design region by adopting the multi-island genetic algorithm. By performing optimization on the wing types of the staggered-floor wings, unfavorable pneumatic interference of the staggered-floor wings is lowered, lift-drag ratio is improved, the calculated amount is reduced on the basis of ensuring the calculation precision, and the optimization efficiency is improved.
Owner:BEIHANG UNIV

Optimization design method for air vehicle lifting surface structure

Disclosed is an optimization design method for an air vehicle lifting surface structure. The method includes utilizing a Latin hypercube design (LHD) method to extract experiment design samples and obtain a high-accuracy analysis model response value of an air vehicle lifting surface; constructing a radial basis function (RBF) broker model; generating a certain amount of grid points randomly by using the LHD method in design space, and calculating a corresponding response value of the RBF broker model; setting a global space reduction rate M1% and a local space reduction rate M2%, and performing two times of pseudo reduction; optimizing the RBF broker model by using a genetic algorithm in each clustering space; obtaining the space distance between an optimal point and a last-time space global approximate optimal point, and deleting the current space to obtain novel space if reduction criteria are met; and obtaining an actual response value of a current global approximate optimal solution, determining whether the value is convergent, and stopping optimizing if the value is convergent, otherwise, performing iteration repeatedly till the optimal solution is found. According to the optimization design method for the air vehicle lifting surface structure, the optimization efficiency is improved, and the optimization design cost of the air vehicle lifting surface structures saved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
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