3 results about "Extension method" patented technology

The invention discloses a method for manufacturing an NbTi-CuNi-Cu superconductive composite wire rod. The method comprises the following steps of putting an NbTi alloy rod into a Cu tube, and obtaining an NbTi-Cu single-core composite rod blank through a hot extrusion or sleeve extension method; extending the NbTi-Cu single-core composite rod blank to a hexagonal rod to obtain an NbTi-Cu single-core composite rod, putting the NbTi-Cu single-core composite rod into a copper tube to manufacture an NbTi-Cu multi-core composite rod; putting the NbTi-Cu single-core composite rod or the NbTi-Cu multi-core composite rod into a copper tube, sleeving a CuNi tube with the copper tube, sleeving another copper tube with the CuNi tube, and sealing two ends of the copper tube; reducing space in the copper tube through a hot isostatic pressure method and performing hot extrusion to obtain an NbTi-CuNi-Cu composite rod; performing multiple cold extension and aging treatment on the NbTi-CuNi-Cu composite rod to obtain the superconductive composite wire rod with the required dimension and shape. By means of the method, alternating current loss of the NbTi superconductive composite wire rod is reduced, production processes are simplified, and production cost is reduced.

The invention discloses a method for diagnosing a state of a rolling bearing based on a self-attention neural network, comprising the steps of: using a vibration acceleration sensor to acquire timingsequence signals of vibration acceleration of the rolling bearing in different states under different motor loads to obtain vibration acceleration data to be used as sample data; performing data enhancement processing on the acquired sample data; attaching corresponding labels to the sample data subjected to the data enhancement processing according to the type of the state of the rolling bearing;extending characteristic vectors of each sample data by using multilayer mapping, so as to change one-dimensional characteristics into multi-dimensional characteristics; establishing a self-attentionnetwork diagnosis model; training the self-attention network diagnosis model by using the processed sample data, evaluating the trained self-attention network diagnosis model, and applying the trained self-attention network diagnosis model to monitoring the to-be-diagnosed rolling bearing. According to the method of the invention, a data enhancement technology and a characteristic extension method are adopted, so that a requirement of the method on data volume can be reduced, and the capacity of the method for coping with an extreme environment is improved.

The invention discloses an extension method based on java remote authorization APP, comprising: installing software on a PC and initializing the MAC address of the PC stored in the background; initiating an extension application; checking whether the extension is normal and setting an extension date. Remotely authorize the software that needs to be postponed, prevent the theft of the viewing software at the front desk, realize the one-to-one correspondence between the PC and the APP, greatly prevent the theft of the viewing software, and provide customers with a safer environment for use.