calculating signal determinant by decomposingnetwork matrix is presented.

Under the conditions of a comprehensive temperature outside the room known as tz (τ) and the temperature inside the room known as t 0 , this paper derivated a formula calculating the heat amount conducted from both the single shield of wall body having inner and outer air shields and the wall body having multishields, through the use of network matrix, which enables to compute with computers.

According to the basic principles of hydromechanics and the electrical network theory, a new method named network matrix approach is presented in this paper to calculate ventilation system.

The switch matrix network composed of severals witch arrays is used to complete the automatic access between the radio channels and wire channels.

The method preserves the robustness of FF fieldbus with respect to the disturbances,and it also shows the advantages of dynamic matrix control based on neural networks in FF fieldbus.

With regards to the characteristics of time-delay system and the weakness of dynamic matrix control, a method is proposed in this paper to carry out dynamic matrix control based on neural networks in FF Fieldbus through an OPC package in Matlab 7.