The describing function technique for multiple nonlinearities in a single-loop feedback system is used to get the relationship between the bound of deadzone and the quantum step,and the bound of deadzone for stabilizing the chattering is obtained.

Research on intelligent fitting method for multivariate nonlinear polynomials and its application;

Research conclusions:The multivariate nonlinear regression equation is established with the foundation of layer-summation method to illustrate the eternal relations among the time,settlement deformation,filling height,elastic modulus,and thickness of the compressed layer.

The multivariate nonlinear regression technique was used to select kinetic model of thermal decomposition of Na2SO4·0.

Using multi-sensor technology,some parameters affecting the measurement of water content of crude oil are measured,and prediction models of water content of crude oil based on the methods of multivariate nonlinear regression and artificial neutral networks are presented,and then being improved by subsection modeling.

A multivariate nonlinear regression model is therefore developed and,based on it,three regression equations are obtained correspondingly to show the effects of the three parameters on arc current.

And the regressive equations that to calculate hydrogen content in Chinese anthracite is obtained by using multivariate nonlinear regression.

In this paper, a new model system is introduced, which synthetically applies time series model, nonlinear regression and combination forecasting model to forecast the change of the market price.