7 results about "Spinor" patented technology

The invention provides a civil structure deformation anomaly detection method based on time series data, and relates to the field of civil structure deformation anomaly detection. A disturbance intensity response value, a disturbance curvature and a local disturbance folding feature are constructed, a range adjustment enhancement value is formed by combining a symbol jump mark and a neighborhood disturbance difference value, a latent guide feature is generated based on the range adjustment enhancement value, a disturbance reconstruction feature is constructed through superposition of a diffusion residual error and an asymmetric difference item, normalization mapping is completed to obtain a normalization feature, and the normalization feature is obtained. A disturbance spinor modulation factor is constructed in combination with a nonlinear suppression correlation coefficient, a disturbance spinor tensor is formed through a logarithmic compression channel and a square amplification channel and by applying quadrature phase coding, a tensor potential mapping map is generated under a path coupling and self-coupling mechanism, disturbance energy offset and extreme value deflection are constructed based on the tensor potential mapping map, and disturbance energy offset and extreme value deflection are obtained. And a probability potential index is formed, and civil structure deformation anomaly detection model training is completed based on the probability potential index, so that civil structure deformation anomaly detection is realized.

The invention discloses an assembly precision analysis method for a rotary shaft system of a mechanical structure based on a laser tracking measurement system, and in the laser tracking measurement system, the high precision guarantee of an assembled mechanical system is the premise of realizing accurate measurement. In order to obtain the assembly precision of a laser tracking measurement system, the invention provides an assembly precision analysis method based on Jacobi-spinor for a rotary shaft mechanical structure of the laser tracking measurement system. A Jacobian matrix model in the deviation transfer process and a spinor model comprising plane features, cylinder features and plane and cylinder parallel features are combined, a laser tracking measurement system rotating shaft assembly precision analysis model is established, and Monte Carlo simulation is adopted for calculation results to simulate actual assembly errors. A result shows that a difference value between a theoretical assembling condition and an analogue simulation actual assembling condition is 6.79 microns. The result shows that the provided method can qualitatively analyze the assembly precision of the rotating shaft of the laser tracking measurement system.

The invention discloses a brain point cloud registration method based on Clifford algebra and manifold features. The brain point cloud registration method comprises the following steps: calculating a brain curvature field based on manifold features; extracting three-dimensional ridge line features; three-dimensional feature main direction construction based on Clifford algebra is carried out; constructing a Clifford geometric invariant feature descriptor; bidirectional consistency matching based on ratio checking; carrying out space attitude calculation based on a high-order spinor mapping kernel; carrying out dense feedback alignment based on manifold constraint; according to the method, manifold differential geometry is introduced to extract high-robustness brain ridge features, a geometric invariant descriptor with holographic characteristics is constructed in combination with Clifford algebra, and meanwhile, singular-point-free rapid attitude calculation is realized by using a high-order spinor analysis method, so that the calculation efficiency is improved on the premise that the calculation efficiency is ensured. And the precision and robustness of multi-modal point cloud registration in neurosurgical navigation are remarkably improved.

The invention discloses an electric spindle tolerance optimization method and device considering thermal deformation, and the method comprises the steps: S1, solving an electric spindle tolerance problem through employing a Jacobian spinor model, and determining an electric spindle tolerance transmission path; s2, carrying out thermal state simulation analysis on the motorized spindle based on finite element software, and extracting deformation point cloud data of the matching surface of each part; s3, deriving deformation point cloud data of the matching surface of each part, discretizing deformation of the matching surface of each part, fitting based on a least square method to obtain geometric features of the deformed matching surface, and calculating corresponding equivalent size, position and shape tolerance according to the geometric features; s4, correcting the Jacobian spinor model according to the equivalent size, the position and the shape tolerance to obtain an electric spindle three-dimensional tolerance model considering thermal deformation; s5, performing a random statistical experiment based on Monte Carlo simulation to realize assembly precision prediction; and S6, establishing an electric spindle tolerance optimization model, and obtaining an optimal distribution result by adopting a grey wolf algorithm.

The invention provides a satellite on-orbit assembly structure relative pose resolving method and system, and the method comprises the steps: constructing a satellite on-orbit assembly structure relative pose measurement system through two sets of five-degree-of-freedom measurement equipment, and building a mathematical model of a three-dimensional displacement measurement device and a two-dimensional deflection angle measurement device; a measurement model of five-degree-of-freedom measurement equipment is deduced and established based on a geometrical relationship, a pose conversion parameter linear resolving model is obtained through processing according to a pose conversion small spinor theory, pose conversion parameters are iteratively calculated through a least square method, and the method is suitable for pose measurement and resolving of most satellite in-orbit assembly or adjustment structures. Good application prospects are realized.

The application provides a civil structure deformation anomaly detection method based on time series data, and relates to the field of civil structure deformation anomaly detection; a disturbance intensity response value, a disturbance curvature and a local disturbance folding feature are constructed, a range adjustment enhancement value is formed by combining a symbol jump flag and a neighborhood disturbance difference value, a latent guide feature is generated based on the range adjustment enhancement value, a disturbance reconstruction feature is constructed by superimposing a diffusion residual and an asymmetric difference item, normalized features are obtained through normalization mapping, a disturbance spinor modulation factor is constructed by combining a nonlinear inhibition correlation coefficient, a disturbance spinor tensor is formed by applying orthogonal phase coding to a logarithmic compression channel and a square amplification channel, and a tensor potential mapping atlas is generated under a path coupling and self-coupling mechanism; on the basis of the above, a disturbance energy offset and an extreme value deflection are constructed, a probability potential index is formed, a civil structure deformation anomaly detection model is trained based on the probability potential index, and the detection of civil structure deformation anomalies is realized.

The application discloses an assembly precision analysis method based on measured values of measuring elements, and belongs to the field of design manufacturability analysis. The method comprises the following steps: firstly, acquiring nominal sizes through a design model, and acquiring all measuring reference points of the measuring elements through a three-coordinate measuring machine or a measuring fixture during positioning; secondly, establishing a reference coordinate system of the measuring elements according to the reference principle; thirdly, using an SDT spinor model to represent the variation of relevant surfaces of a part, and defining the geometric elements in the reference coordinate system through the nominal sizes; and finally, determining the position of the reference coordinate system under the assembly reference elements according to the assembly contact relationship, the assembly sequence and the actual position of the reference elements. The actual position of the target measuring element in the assembly body can be calculated through the above four processes, and the assembly precision analysis based on the measured values of the target measuring elements is realized. The method is high in calculation accuracy since the assembly precision is calculated based on the measured values of the geometric elements.