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Increasing the damping of oscillatory systems with an arbitrary number of time varying frequencies using fractional-order collocated feedback

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Increasing the damping of oscillatory systems with an arbitrary number of time varying frequencies using fractional-order collocated feedback

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This paper studies the active damping of the oscillations of lightly damped linear systems whose parameters are indeterminate or may change through time. Systems with an arbitrary number of vibration modes are considered. Systems described by partial differential equations, that yield an infinite number of vibration modes, can also be included. In the case of collocated feedback, i.e. the sensor is placed at the same location of the actuator, a simple fractional order differentiation or integration of the measured signal is proposed that provides an effective control.

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Nội dung Text: Increasing the damping of oscillatory systems with an arbitrary number of time varying frequencies using fractional-order collocated feedback

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