Using such graphs, it is possible to check the best optimization stages for each
damping ratio considered, and to show the best optimization points throughout the process.
The objective of modeling the damping controller is to enhance the
damping ratio of the poorly-damped or unstable electromechanical modes of oscillation, which can be achieved through designing of a damping controller that provides a pure damping torque.
The Model 7264H 1,000g piezoresistive accelerometer with a natural frequency [greater than or equal to]19 kHz uses gas damping with a
damping ratio between 0.4 and 0.85 to minimize ringing in shock applications.
Two of the necessary parameters for the study of dynamic behavior of an object are the modulus of elasticity and the
damping ratio; and the results of this study will aid in the development of harvesters using mechanical vibration.
This study presents predictive models for estimating normalized shear modulus and
damping ratio of three compacted remodeled rockfill materials using modified hyperbolic and nonlinear multiple regression methods.
The generalized inverse system parameters ([a.sub.10], [a.sub.11], [a.sub.20], [a.sub.21]) are set to make the
damping ratio ([xi]) of this composite subsystem close to 0.7.
The variation curve of transmissibility coefficient T with the frequency ratio [beta] for discrete values of the
damping ratio [xi] is shown in Figure 2.
The weakly damped electromechanical mode will have minimum value of
damping ratio [Min([xi]i)] among all the
damping ratios of the system.