With sufficient consideration to realistic application factor of UHV transformer end connecting with long-distance transmission line, and with corresponding calculation for transformer equivalent instantaneous reluctance using adaptive digital low-pass filter, this scheme is good for solving problem.

Study on equivalent damping calculation for hydraulic damper of helicopter rotor;

Based on the classic composites laminates theory,the stiffness matrix and the equivalent damping matrix of the laminates which can be described by elastic constants and damping constants were determined.

The results of calculated equivalent impedance was agree with measured.

The equivalent impedances of inductor and capacitor in transient response were deduced from the exponential transient solution and the volt ampere relation of these elements.

The equivalent impedance of floating-ring bearing which considering the mass of floating-ring is deduced.

And the equivalent damp of super-elastic effect o f TiNi Shape Memory Alloy is calculated by simulating its cycle curve using experimen t data.

And we calculate equivalent damp of super-elastic effect of TiNi Shape Memory Alloy through simulating its cycle curve.

According to the characteristics of the series-base-isolation structure,the calculation formulas for the equivalent damp and equivalent stiffness of the structure were given,and the desirable equivalent damp could be obtained.

A general study on equivalent resistance of 2×N-laddered network;

The equivalent resistance of a random resistor network;

Calculation of equivalent resistance--joint point analytic method;