A driven active mass damper by using output of a neural oscillator (effects of position control system changes on vibration mitigation performance)

J. Hongu; D. Iba; T. Sasaki; M. Nakamura; I. Moriwaki

doi:10.1117/12.2084206

27 March 2015 A driven active mass damper by using output of a neural oscillator (effects of position control system changes on vibration mitigation performance)

J. Hongu, D. Iba, T. Sasaki, M. Nakamura, I. Moriwaki

Author Affiliations +

Proceedings Volume 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015; 943510 (2015) https://doi.org/10.1117/12.2084206
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2015, San Diego, California, United States

Abstract

In this paper, a design method for a PD controller, which is a part of a new active mass damper system using a neural oscillator for high-rise buildings, is proposed. The new system mimicking the motion of bipedal mammals is a quite simple system, which has the neural oscillator synchronizing with the acceleration response of the structure. The travel distance and direction of the auxiliary mass of the active mass damper is decided by the output of the neural oscillator, and then, the auxiliary mass is transferred to the decided location by using the PD controller. Therefore, the performance of the PD controller must be evaluated by the vibration energy absorbing efficiency by the system. In order to bring the actual path driven by the PD controller in closer alignment with the ideal path, which is assumed to be a sinusoidal wave under resonance, firstly, the path of the auxiliary mass driven by the PD controller is analytically derived, and the inner product between the vector of ideal and analytical path is evaluated. And then, the PD gain is decided by the maximum value of the inner product. Finally, numerical simulations confirm the validity of the proposed design method of the PD controller.

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J. Hongu, D. Iba, T. Sasaki, M. Nakamura, and I. Moriwaki "A driven active mass damper by using output of a neural oscillator (effects of position control system changes on vibration mitigation performance)", Proc. SPIE 9435, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2015, 943510 (27 March 2015); https://doi.org/10.1117/12.2084206

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KEYWORDS

Oscillators

Control systems

Control systems design

Energy efficiency

Numerical simulations

Earthquakes

Solids

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