Usage of Wigner–Ville distribution for vibroacoustical forced oscillation diagnostics of cracks

2000 ◽  
Vol 108 (5) ◽  
pp. 2529-2529 ◽  
Author(s):  
Leonid M. Gelman ◽  
Denis A. Adamenko
Keyword(s):  
Forced Oscillation ◽  
Diagnostics Of Cracks

INVESTIGATION OF ROTARY AND UNSTEADY DERIVATIVES OF THE PITCHING MOMENT OF AN AIRPLANE MODEL USING A 2DOF FORCED OSCILLATION RIG

2013 ◽  
Vol 44 (4) ◽  
pp. 507-519
Author(s):  
Ivan Vasilyevich Kolin ◽  
Kazbek Fedorovich Latsoev ◽  
Vladimir Georgievich Markov ◽  
Viktor Konstantinovich Svyatodukh ◽  
Tamara Ivanovna Trifonova ◽  
...  
Keyword(s):  
Forced Oscillation ◽  
Pitching Moment ◽  
Derivatives Of

scholarly journals Damping forced oscillations in power system via interline power flow controller with additional repetitive control

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Shirui Feng ◽  
Xi Wu ◽  
Zhenquan Wang ◽  
Tao Niu ◽  
Qiong Chen
Keyword(s):  
Power Flow ◽  
Forced Oscillation ◽  
Control Method ◽  
Damping Ratio ◽  
Repetitive Control ◽  
Oscillation Amplitude ◽  
Reference Value ◽  
Forced Oscillations ◽  
Flow Controller ◽  
Power Flow Controller

AbstractWith the continuous expansion of power systems and the application of power electronic equipment, forced oscillation has become one of the key problems in terms of system safety and stability. In this paper, an interline power flow controller (IPFC) is used as a power suppression carrier and its mechanism is analyzed using the linearized state-space method to improve the system damping ratio. It is shown that although the IPFC can suppress forced oscillation with well-designed parameters, its capability of improving the system damping ratio is limited. Thus, combined with the repetitive control method, an additional repetitive controller (ARC) is proposed to further dampen the forced power oscillation. The ARC control scheme is characterized by outstanding tracking performance to a system steady reference value, and the main IPFC controller with the ARC can provide higher damping, and further reduce the amplitude of oscillations to zero compared with a supplementary damping controller (SDC). Simulation results show that the IPFC with an ARC can not only greatly reduce the oscillation amplitude, but also actively output the compensation power according to the reference value of the ARC tracking system.

Forced oscillation of second-order neutral equations

2000 ◽  
Vol 21 (10) ◽  
pp. 1197-1200
Author(s):  
Wang Pei-guang ◽  
GE Wei-gao
Keyword(s):  
Forced Oscillation ◽  
Second Order ◽  
Neutral Equations
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