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112results about How to "Stable value" patented technology

Series-wound long short-term memory recurrent neural network-based heating load prediction method

ActiveCN107239859ASolving the vanishing gradient problemFast convergenceForecastingNeural learning methodsShort durationMachine learning
The present invention discloses a series-wound long short-term memory recurrent neural network-based heating load prediction method. The method comprises the steps of constructing a sample data set based on temperature, climate and heat supply data during a given period of time, and respectively subjecting the input data and the output data of the sample data set to standardized treatment; dividing the input data into two portions, respectively inputting the two portions into two independent long short-term memory recurrent neural networks to merge the two portions of the input data, inputting the output data to a long short-term memory recurrent neural network at a next layer, and finally inputting the data into two full connection layers; training a constructed series-wound long short-term memory recurrent neural network, and optimizing the network by adopting the parameter optimization-based adaptive torque estimation algorithm; inputting to-be-predicted data into the series-wound long short-term memory recurrent neural network, calculating and obtaining a heating load prediction result. The method of the invention can effectively discriminate input data, and accelerate the learning speed. Therefore, the learning efficiency is improved and the prediction accuracy is improved.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +2

Parallel decision feedback balance method and device based on initial parameter passing

The invention discloses a time domain balance method for a plurality of paths of orthogonal modulation signals. The method is implemented through a plurality of decision feedback balancers having the same structures. The decision feedback balancers construct a balancer group, wherein the number of the decision feedback balancers is the same as the number of paths of orthogonal modulation signals; each decision feedback balancer consists of a feed-forward filter, a feedback filter and a symbol detector. The method comprises the following steps: receiving a training sequence by using one of the decision feedback balancers, performing initial parameter iteration training, transmitting the coefficient of the feed-forward filter to the remaining feed-forward filters when a mode switching condition is satisfied, and transmitting the coefficient of the feedback filter to the remaining parallel feedback filters to rapidly realize initialization of all decision feedback balancers; switching the balancer group from a training mode to a decision guide mode, and entering a tracking stage; at the tracking stage, performing further iteration on parameters by adopting a decision directed algorithm independent of the training sequence till convergence; in the process, performing parameter adjustment through each decision feedback balancer according to a modulation signal passing through a channel.
Owner:王红星

Preparation method of water content standard material

The invention relates to a preparation method of a water content standard material. The method comprises the steps of: weighing the mass of a dried glass volumetric flask, adding propylene carbonate, 1-butanol and xylene in proportion, and weighing the mass of the mixed solution; measuring water in the mixed solution, and calculating the mass of water needing to be added according to a preparation target value; adding deionized water into the volumetric flask and mixing the solution well; shifting part of the mixed solution into an ampoule bottle, adjusting the humidity of a constant temperature and humidity chamber, monitoring water content variations over time under different humidity conditions; recording the humidity within the constant temperature and humidity chamber when the solution water content varies minimally; under a humidity condition with stable solution water content, charging ampoule bottles with the mixed solution separately, and sealing the ampoule bottles; taking the mean of the results measured by Coulometry and volumetric methods as the water content of a standard material; and evaluating the water uncertainty. The water content standard material prepared by the method of the invention is beneficial for improving the accuracy of a Karl Fischer water titrator measuring result.
Owner:NAT INST OF METROLOGY CHINA
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