4results about How to "Improve the restraint effect" patented technology

The application discloses a hyperspectral remote sensing image constraint collaborative representation anomaly detection method based on global anomaly weighting. A local dictionary is constructed by using a sliding double window, a graph regular term constraint is added on the basis of collaborative representation in order to maintain the local geometric structure in the original data space, a graph constraint collaborative representation model is established, and a global anomaly saliency weight is constructed by using a spectral residual method in order to fully utilize the global features of the hyperspectral remote sensing image. Finally, the established graph constraint collaborative representation model and the constructed global anomaly saliency weight are nonlinearly fused. The application aims at solving the problems of insufficient utilization of the best representation of the to-be-tested image element in the reconstruction model and features, and effectively improves the precision of the hyperspectral anomaly detection by using the graph constraint collaborative representation model and the global anomaly saliency weight.

The five-degree-of-freedom permanent magnet biased magnetic suspension bearing comprises an outer stator set and an inner rotor set, the outer stator set comprises a stator iron core and two stator magnetic rings arranged at the two ends of the stator iron core respectively, a plurality of stator teeth are arranged on the inner wall of the stator iron core in the radial direction, and coils are wound around the stator teeth; the inner rotor set comprises a rotor core and two rotor permanent magnets arranged at the two ends of the rotor core respectively. The rotor core and the stator teeth are arranged oppositely in the radial direction and are in clearance fit. The two stator magnetic rings and the two rotor permanent magnets are magnetized in the axial direction, the magnetizing directions of the two stator magnetic rings are opposite, and meanwhile the magnetizing direction of any stator magnetic ring is opposite to the magnetizing direction of the rotor permanent magnet opposite to the stator magnetic ring in the radial direction. A static bias magnetic field is provided by permanent magnet acting force between the stator magnetic ring and the rotor permanent magnet, dynamic suspension auxiliary adjustment is performed by using electromagnetism, the power consumption of the system is remarkably reduced, the size is small, and the weight is light.

The present application relates to the field of industrial control technology, disclose a kind of electron beam power self-adapting regulation control method and system, the method includes: real-time acquisition electron beam processing workpiece beam amplitude, power output voltage, focusing coil current, according to fixed time window construction power timing adjustment sequence;Beam amplitude variation rate deviation is analyzed based on timing adjustment sequence, obtain amplitude deviation, closed-loop control output voltage, obtain power amplitude correction amount;According to beam amplitude drop rate analysis power output carrier phase characteristics, real-time calibration phase, obtain power phase correction amount;Phase correction amount is mapped as focusing coil current constraint adjustment coefficient, according to amplitude deviation variation gradient setting threshold, obtain focusing current constraint amount;According to beam amplitude drop rate dynamically weighted setting each correction amount, constraint amount, obtain power fusion driving control amount;Fusion driving control amount is input into power control terminal, complete electron beam power self-adapting regulation control.

The application relates to the technical field of plasma digital control, and provides a method and system for controlling plasma rotation, which comprises the following steps: moving an electrode head to a preset magnetic surface according to target window positioning data, applying a deflection bias after satisfying a vacuum condition, making two magnetic surfaces form a radial potential difference, inducing a radial electric field and generating a radial current; combining magnetic field data to determine a Lorentz force distribution, generating a moment and constructing a momentum source area to drive plasma rotation; and combining density parameters to generate an adjustment instruction to optimize the rotation state. The method can control plasma rotation and a boundary electric field under the premise of a complex three-dimensional magnetic field configuration without increasing impurity sources, and realizes boundary transport inhibition and constraint performance improvement.