38 results about "Relaxation factor" patented technology

A system and method for designing a progressive lens. Mean power is specified at points distributed over the entire surface of the lens and lens height is specified around the edge of the lens. Lens height is determined at the points consistent with the specified mean power and the lens edge height in part by solving a partial differential equation of the elliptic type subject to the lens edge height as a boundary condition. A successive over-relaxation technique may be employed to converge on the solution to the partial differential equation, and an over-relaxation factor may be determined to most efficiently relax the equation.

The invention discloses an interruption relaxation alignment method based on multi-point multi-user coordination downlink. The method specially comprises the following steps: (1) completing channel estimation at a sending end by using a corresponding channel estimation technique according to that different performances and transmission modes are required by communication systems to obtain channel matrix parameters; (2) establishing an optimized equation consisting of constraint conditions and a target function, wherein the constraint conditions are formed after relaxed interruption and alignment are carried out on constraint conditions by a relaxation factor lambda; (3) solving the optimized equation; (4) respectively performing premultiplication on a sending signal by various receiving ends with a solved wave beam formation matrix so as to complete pretreatment; and (5) carrying out conjugated transposition premultiplication of the received signal by various receiving ends with a solved interruption elimination matrix so as to complete post-treatment. The method has the advantages that a wave beam formation matrix set and an interruption elimination matrix set which are used for inhibiting multi-user interruption can be rapidly solved, and the pre-treatment and post-treatment are respectively carried out by the sending end and receiving ends so as to inhibit the multi-user interruption.

The invention discloses a fault classification method based on an improved fuzzy support vector machine. The method comprises: obtaining sample data of a switch cabinet, establishing an optimization model for the sample data by introducing a relaxation factor, and calculating the hypersphere of the optimization model The minimum radius of the hypersphere; take the minimum radius of the hypersphere as the boundary of the hypersphere, and use the segmented semi-decreasing normal cloud model to calculate the degree of membership of the sample data inside and outside the boundary of the hypersphere; The degree of membership constitutes a sample set of fault types, and the sample set of the fault types is used to obtain the optimal segmentation function of the improved FSVM; the optimal segmentation function of the improved FSVM is used to establish a classifier of the improved FSVM, and the sample data are sequentially Through the classifier of the improved FSVM, the fault type of each sample data is obtained. This method achieves the effect of improving the fault classification of the switchgear.