Hybrid mass damper: theoretical and experimental power flow analysis

2022 ◽  
pp. 1-18
Author(s):  
Kevin Billon ◽  
Guoying Zhao ◽  
Christophe Collette ◽  
Simon Chesne
Keyword(s):  
Power Flow ◽  
Flow Analysis ◽  
Tuned Mass Damper ◽  
Control Law ◽  
Hybrid Device ◽  
Hybrid Controller ◽  
Mass Damper ◽  
The Time Domain ◽  
Fail Safe ◽  
Specific Control

Abstract In this paper, a hybrid mass damper (HMD) and its hyperstability thanks to a power flow approach are studied. The HMD proposed combines an active control system with an optimal passive device. The initial passive system is an electromagnetic Tuned Mass Damper (TMD) and the control law is a modified velocity feedback with a phase compensator. The resulting hybrid controller system is theoretically hyperstable and ensures fail-safe behavior. Experiments are performed to validate the numerical simulation and provide good results in terms of vibration attenuations. Both excitation from the bottom in the frequency domain and shock response in the time domain are tested and analyzed. The different power flows in terms of active and reactive powers are estimated numerically and experimentally on the inertial damper (passive and active) and on the HMD. More over, through a mechanical analogy of the proposed system, it is shown that this hybrid device can be seen as an active realization of an inerter based tuned-mass-damper associated with a sky-hook damper. Observations and analysis provide insight into the hyperstable behavior imposed by the specific control law.

Power Flow Analysis for Hybrid Mass Damper Design

2018 ◽  
Author(s):  
S. Chesne ◽  
K. Billon ◽  
C. Collette ◽  
G. Zhao
Keyword(s):  
Power Flow ◽  
Flow Analysis ◽  
Tuned Mass Damper ◽  
Control Law ◽  
Unconditionally Stable ◽  
Active Systems ◽  
Mass Damper ◽  
Damper Design ◽  
Fail Safe ◽  
Damping Capability

Tuned Mass Damper (TMD) are largely used in many domains like aerospace or civil engineering. While very simple and robust, their damping capability is proportional to their mass, which represents an important shortcoming. Hybrid-TMDs propose to combine active systems to an optimal passive device. Nevertheless, stability problems can result from this association. In this study, the passivity concept is used to design a control law enforcing the hybrid-TMD to be hyperstable. Consequently, the resulting Hybrid TMD is fail-safe and unconditionally stable. An analysis of the active and reactive powers also illustrates the energy flux in the device and its passive nature. Simulations based on an experimental model show the performance of such system.

Hybrid Mass Damper Experimental Analysis of Shock Response

2018 ◽  
Author(s):  
Kevin Billon ◽  
Matthias Perez ◽  
Simon Chesné ◽  
Guoying Zhao ◽  
Christophe Collette
Keyword(s):  
Tuned Mass Damper ◽  
Control Law ◽  
Electromagnetic System ◽  
Velocity Feedback ◽  
Experimental Parameters ◽  
Mass Damper ◽  
Spring System ◽  
Fail Safe ◽  
Mass Spring ◽  
System Controller

In this paper, an hybrid mass dampers (HMD) and its control law are studied. Based on a optimal tuned mass damper (TMD), it is a one degree of freedom (dof) mass-spring system associated with an electromagnetic system. The passive damping is provided by the coil-magnet combination coupled with a tunable load. The passive resonator has been modify to become “dual”, a second coil-magnet combination has been had on the same dof to create an active part. The control law is a modified velocity feedback with phase compensator. The proposed hybrid system controller is hyperstable and ensure a fail-safe behavior. The HMD is experimentally tested at 1:1 scale. It is carried out on a main structure suspended by flexible blades. The numerical model, with experimental parameters identification, provides good results. Under shock disturbance, experimental results show the ability of this system to react quickly and dissipate energy in comparison with the passive one.

scholarly journals Experimental validation of fail-safe hybrid mass damper

2017 ◽  
Vol 24 (19) ◽  
pp. 4395-4406 ◽  
Author(s):  
Simon Chesné ◽  
Christophe Collette
Keyword(s):  
Hybrid Control ◽  
Control Device ◽  
Control Law ◽  
Controlled System ◽  
Hybrid Device ◽  
Mass Damper ◽  
Initial Control ◽  
Fail Safe ◽  
Feedback Techniques ◽  
System Controller

A simple control law, dedicated to improving the performance and stability of hybrid mass dampers, is investigated. The resulting hybrid device is based on decentralized velocity feedback techniques. Two poles and two zeros are added to the initial control law, in order to interact with the dynamics of the structure and the actuator. The interest of these interactions is to change the poles of the closed loop system so as to make the controlled system hyperstable. The margins of gain and phase are therefore infinite. Consequently, the proposed hybrid system controller is fail-safe but also unconditionally stable in theory. Experimentation, using a tuned voice coil actuator, illustrates the performance and robustness of this hybrid control device.

scholarly journals Hybrid skyhook mass damper

2021 ◽  
Vol 22 ◽  
pp. 49
Author(s):  
Simon Chesné
Keyword(s):  
Hybrid System ◽  
Power Flow ◽  
Dynamical Behavior ◽  
Control Unit ◽  
Mechanical Impedance ◽  
Impedance Analysis ◽  
Critical Issue ◽  
Control Law ◽  
Mass Damper ◽  
Fail Safe

The objective of this study is to increase the efficiency of an initial passive Tuned Mass Damper (TMD) by adding an active control unit. A critical issue in many engineering domains is the design of fail-safe active systems. The proposed hybrid system aims to address this issue and realizes the said objective. It emulates the behavior of a skyhook damper parallel to a passive TMD. Skyhook dampers acts like viscous dampers connected to the ground, reducing the vibration amplitudes without any overshoot. It can be difficult to design a specific control law to obtain a desired dynamical behavior. The paper presents two ways to understand and design the hyperstable control law for Hybrid Mass Damper (HMD) (also called Active TMD), using the power flow formulation or the mechanical impedance analysis. These approaches are illustrated through the synthesis of this hybrid device and the emulation of the Skyhook damper. It is shown that a well-designed control law for this kind of system may result in high damping performance, ensuring stability and a fail-safe behavior. In addition, the amplitude of the primary system’s response is reduced over the entire frequency range which is not the case for the usual active or hybrid systems. Robustness is analyzed and compared to that of the classical active mass damper, and an experimental set up validates the proposed hybrid system.

scholarly journals LQR Control of Wind Excited Benchmark Building Using Variable Stiffness Tuned Mass Damper

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
S. N. Deshmukh ◽  
N. K. Chandiramani
Keyword(s):  
Linear Time ◽  
Variable Stiffness ◽  
Tuned Mass Damper ◽  
Nonlinear Static Analysis ◽  
Performance Criteria ◽  
Control Law ◽  
Control Force ◽  
Displacement Control ◽  
Lqr Control ◽  
Mass Damper

LQR control of wind induced motion of a benchmark building is considered. The building is fitted with a semiactive variable stiffness tuned mass damper adapted from the literature. The nominal stiffness of the device corresponds to the fundamental frequency of the building and is included in the system matrix. This results in a linear time-invariant system, for which the desired control force is computed using LQR control. The control force thus computed is then realized by varying the device stiffness around its nominal value by using a simple control law. A nonlinear static analysis is performed in order to establish the range of linearity, in terms of the device (configuration) angle, for which the control law is valid. Results are obtained for the cases of zero and nonzero structural stiffness variation. The performance criteria evaluated show that the present method provides displacement control that is comparable with that of two existing controllers. The acceleration control, while not as good as that obtained with the existing active controller, is comparable or better than that obtained with the existing semiactive controller. By using substantially less power as well as control force, the present control yields comparable displacement control and reasonable acceleration control.

scholarly journals A Generalized and Mode-Adaptive Approach to the Power Flow Analysis of the Isolated Hybrid AC/DC Microgrids

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2253 ◽  
Author(s):  
Yu Xiao ◽  
Chunguang Ren ◽  
Xiaoqing Han ◽  
Peng Wang
Keyword(s):  
Power Flow ◽  
Operation Mode ◽  
Flow Analysis ◽  
Dc Microgrid ◽  
Dc Microgrids ◽  
Operation Modes ◽  
Load Fluctuation ◽  
Practical Operation ◽  
Binary Matrices ◽  
The Time Domain

Hybrid AC/DC microgrids (HMG) are emerging as an attracting method for integrating AC/DC distributed energy resources (DERs). In the isolated hybrid AC/DC microgrid (IHMG), the key problem is how to balance power variation and regulate voltage and frequency. Various energy storage systems (ESS) and interlinking converter (IC) technologies are viable for this application. The present study proposes a novel unified power flow (PF) model which can be applied to compare and analyze the practical operation modes of the IHMG and, further, to evaluate and compare the abilities of the ESS with different connection topologies and ICs with different control approaches to maintain the voltage and frequency stability of the IHMG. Five operation modes of the IHMG are defined and explained. Then, a set of generic PF equations are derived. Moreover, three binary matrices are applied as input parameters of the unified power equations. These matrices enable a single operation mode of the IHMG at a time to be constructed in the power equation. Finally, the accuracy and effectiveness of the proposed scheme are verified against the time domain simulation result. The quasi-steady-state behaviors of multi-DC subgrids IHMG in different modes after a range of load fluctuation are investigated. The results show that the use of multiple grid-forming units in the AC and DC subgrids, when IC adopted normalized.

Prediction of Solutions of the Duffing System with Tuned Mass Damper

2020 ◽  
Vol 22 (4) ◽  
pp. 983-990
Author(s):  
Konrad Mnich
Keyword(s):  
Dynamical System ◽  
Duffing Oscillator ◽  
Probabilistic Approach ◽  
Nonlinear Dynamical System ◽  
Tuned Mass Damper ◽  
Nonlinear Dynamical ◽  
Duffing System ◽  
Mass Damper ◽  
Basin Stability ◽  
Stability Concept

AbstractIn this work we analyze the behavior of a nonlinear dynamical system using a probabilistic approach. We focus on the coexistence of solutions and we check how the changes in the parameters of excitation influence the dynamics of the system. For the demonstration we use the Duffing oscillator with the tuned mass absorber. We mention the numerous attractors present in such a system and describe how they were found with the method based on the basin stability concept.

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