Nonlinear control optimization of digital PID controller of load－sensing pumps;

Based on actual technology conditions of pelleting system in Pellet Plant of Jinan Iron and Steel Co,an online optimizing strategy of optimum load for disc pelletizer was presented to solve online optimizing problem for optimum working load of each disc in multi-disc system.

Convergence and approximate analytical solution of curvilinear search;

Study of nonlinear optimization based on grading competition compact genetic algorithm;

Based on identification of The internal and external constraints on wastewater reuse in urban setting were identified to develop a nonlinear optimization model to maximize the benefits of water resources in wastewater recycling system.

We define three kinds of collision energies,and calculate and discuss them through a nonlinear optimization method.

It is a multi-variables-mixed non-linear optimization problem in designing the structure of the embedded stiffened penstock of hydropower station,and it is difficult to be solved with general optimization methods.

A computing program is developed relied on the non-linear optimization theory with damping least squares.

The main work includes:①the working mechanics of pressuremeter test is numerically simulated with finite element method, in which Duncan-Chang E-B model is applied;②a practical back-analysis method and computing program of constitutive parameters for Duncan-Chang E-B model are developed, based on the non-linear optimization theory with damping least squa.