Once the oscillation mode
is determined, the index calculation of the candidate signal should be carried out, when it is necessary to transform the system into the state space form and G(s) can be written as
The conjugate pair of eigenvalues with the least damping ratio is selected as the electromechanical oscillation mode
of the test power system, on the basis of the eigenvalue analysis.
Therefore, when any oscillation mode
with [xi] < 0 (i.e., [alpha] > 0) exists in the power system, any small disturbance would stimulate this mode and result in a power oscillation of the tie line with increasing amplitude as shown in Figure 1(a).
As a consequence we can find for any low enough resonant oscillation mode
frequency [f.sub.0] a higher mode frequency [f.sub.1] with an integer relationship n = [f.sub.1]/[f.sub.0].
"Instead, we use an internal electronic oscillation mode
that can be designed or tailored over a broad range by changing the layer thickness of the constituent materials."
Available in temperature ranges suitable for both consumer and automotive applications, these resonators offer a frequency tolerance of 1.3 percent overall with initial tolerance, temperature stability, 10-year aging and a fundamental oscillation mode
of up to 20 MHz.
The Sun's rotation splits an oscillation mode
into families of closely grouped frequencies.
They found that there was a linear relationship between oscillation mode
n and the bubble radius, while the mode n had no certain relationship with the amplitude of the driving pressure.
In each modal i, 3n parameters should be designed according to n shafting oscillation mode
, which has a decisive influence on the performance of SVC.
Once the open loop is well understood and characterized, the next step is nonlinear analysis of the oscillation mode
. Harmonic balance simulation is applied to the cascade in Figure 9 to determine the nonlinear oscillation frequency, the output level and the harmonic performance.
Then the bridge abruptly switched its oscillation mode
, and the roadway started to twist.