45 results about "Deviation matrix" patented technology

Estimating impedance of energy storage devices includes generating input signals at various frequencies with a frequency step factor therebetween. An excitation time record (ETR) is generated to include a summation of the input signals and a deviation matrix of coefficients is generated relative to the excitation time record to determine crosstalk between the input signals. An energy storage device is stimulated with the ETR and simultaneously a response time record (RTR) is captured that is indicative of a response of the energy storage device to the ETR. The deviation matrix is applied to the RTR to determine an in-phase component and a quadrature component of an impedance of the energy storage device at each of the different frequencies with the crosstalk between the input signals substantially removed. This approach enables rapid impedance spectra measurements that can be completed within one period of the lowest frequency or less.

The invention belongs to the field of automatic processing, and particularly discloses a robot deburring method based on a 3D laser scanner. The method comprises the following steps that a robot grabsa debugging workpiece to move in the visual field range of the 3D laser scanner according to a preset track to obtain a contour point cloud data Pri of the debugging workpiece; the debugging workpiece moves to the position of a tool for teaching programming to obtain a deburring track point coordinates Pj; a to-be-cleaned workpiece is grabbed to move in the visual field range of the 3D laser scanner to obtain a point cloud data Pwi of the to-be-cleaned workpiece in the same manner; the Pri and the Pwi are converted into a robot tail end coordinate system, and a position deviation matrix T andan attitude deviation matrix R are registered to obtain; the Pj is corrected by utilizing T and R, and the corrected deburring track point coordinates Pj' is obtained; and the robot clamps the to-be-cleaned workpiece to move relative to the tool to achieve deburring treatment according to the Pj'. The method has the advantages that the automation degree is high, the consistency of the parts afterdeburring is good, the deburring efficiency and the percent of pass are improved, and the pollution to the environment caused by the dust is reduced.

The invention discloses an active contour model-based method for automatically extracting regions of interest from hyperspectral images. First, a standard mixed vector of spectral reflectance of the object of interest is established according to the spectral reflectance vector of the known pure object pixel; and then, the calculation is performed. The correlation coefficient of the spectral reflectance standard mixture vector of the object of interest and the spectral vector of each pixel in the hyperspectral image to be processed is obtained to obtain the pixel correlation coefficient deviation matrix; finally, the C-V is constructed with the pixel correlation coefficient deviation matrix Active contour model, and then use the finite difference method to solve the model to realize the pixel extraction of the region of interest. The test results of the embodiments show that the present invention can achieve significantly better extraction results than the traditional C-V model with fewer iterations.

The invention relates to a rotor disc stacking and assembling method and device. Wherein, the method for stacking and assembling the rotor discs includes the following steps: sequentially obtain the concentricity and deviation degree of the mounting edge of each rotor disc in the n-level rotor discs relative to the reference; calculate the deviation matrix of the n-level rotor discs; From the deviation matrix of the rotor disc, extract the coaxiality deviation function FE of the nth rotor disc relative to the first rotor disc with the installation angle β(i) as the variable; obtain the n-level rotor disc with the installation angle β(i) as the variable The unbalanced amount deviation function FU of the unbalanced amount deviation function FU; According to the coaxiality deviation function FE and the unbalanced amount deviation function FU obtain the deviation total function F=FE+k*FU, the independent variable of this deviation total function is the installation angle β (i ); take the total deviation function as the objective function to find the minimum value, and the obtained value is the installation angle β(i) of the corresponding rotor disc. The invention can improve the assembly accuracy and assembly efficiency of the stacked assembly of the rotor discs.