4results about How to "Overcoming technical bias" patented technology

The utility model belongs to but not limited to the technical field of medical instruments, and discloses an endoscopic intervertebral space planer tool device which comprises a connecting part, a working part is arranged at one end of the connecting part, and a universal connecting interface is arranged at the other end of the connecting part and is in butt joint with a power system; the inner diameter of the working part is larger than that of the connecting part, the working part expands at the far end, the diameter of the working part cutter head is larger than that of the connecting part outer sleeve rod, and a working part shell and the cutter head are both provided with openings. A communicated hollow pipeline is arranged between the inner core rod of the connecting part and the tool bit of the working part and communicated with the connector, and after the power system is connected with the connector, the inner core rod and the tool bit axially move and rotate in the outer sleeve rod and the shell. And the suction function is realized through the working part shell opening, the tool bit opening and a hollow pipeline between the connecting part inner core rod and the working part tool bit. When being used for treating the intervertebral space, the device can be inserted into the intervertebral space under the microscope to finish one-time treatment, so that the operation efficiency is improved, and the operation difficulty is reduced.

The invention belongs to the technical field of shale gas effusion early warning, and discloses a shale gas effusion early warning method and system based on an anti-interference multi-classification technology, the method predicts various abnormal working conditions of a gas well based on a Transform multi-classification model, and on the basis of oil pressure, casing pressure, instantaneous flow rate, downstream pressure and other production dynamic data, through a sliding window and difference calculation, the gas well pressure can be accurately measured. Constructing a time sequence feature, a statistical feature, a periodic feature and an event feature by a self-attention mechanism, and raising the dimension of original four-dimensional data to a 441-dimensional feature vector; based on the gas well static features, gas well static feature vectors are extracted; and the characteristics of production dynamic data and gas well static data are fused for reasoning, so that the generalization ability of the model is remarkably improved. Preprocessing and auxiliary judgment are carried out by applying a rule with relatively high certainty in business knowledge, so that the model effusion abnormity alarm performance is improved.

The application belongs to the technical field of lithium ion battery recycling and regeneration, and discloses a method for repairing NCM92 positive electrode material recycling by dielectric material, wherein waste positive electrode material is pretreated to obtain NCM92 positive electrode powder; barium titanate or strontium titanate dielectric material is ground and sieved; the NCM92 positive electrode powder is divided into multiple portions, the dielectric material is mixed with the positive electrode powder in a gradient increasing adding amount, and then dried; lithium source is added to each intermediate product and uniformly mixed; finally, high-temperature sintering, crushing and sieving are performed to obtain regenerated NCM92 positive electrode material. The core of the application is that by gradient adding of the dielectric material barium titanate or strontium titanate, the bulk structure repair of the positive electrode material, the elimination of the surface residual potential and the construction of the functional coating layer are simultaneously realized in the high-temperature sintering process, so that the first efficiency, the cycle stability and the rate performance of the regenerated material are significantly improved. The method has simple process, good regeneration effect and low cost, and provides a new way for realizing high-value direct regeneration of the NCM92 positive electrode material of the retired lithium ion battery.

The application belongs to the technical field of transformers, and discloses a linear phase-shifting transformer core loss calculation method, system, device and terminal, which is based on a classical trinomial loss separation model, three loss coefficients are calculated by using a least square method; the influence of local hysteresis loop, magnetic field non-sine, tooth slot effect and skin effect on the loss model and the loss coefficient is analyzed, the static magnetic density characteristics of the linear phase-shifting transformer are obtained based on finite element simulation calculation; the tangential magnetic density and the radial magnetic density of each characteristic point are separated, and Fourier analysis is carried out, the fundamental wave magnetic density and each harmonic magnetic density are substituted into the improved loss separation model. The core loss of the linear phase-shifting transformer in the stable operation state can be accurately calculated, the calculation precision is greatly improved, which can provide a reference for the efficient operation of the transformer, and has important significance for the optimization design of the linear phase-shifting transformer body and the realization of the minimum loss control of the multiple superposition inverter system of the linear phase-shifting transformer.