Semi-Active Control Using Magnetorhelogical Dampers with Output Feedback and Distributed Sensing

Chandiramani, Naresh K.; Purohit, Sharadkumar P.

doi:10.1155/2012/838140

Cited by 7 publications

(3 citation statements)

References 18 publications

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“…Being an energy dissipation device that cannot add mechanical energy to the structural system, an MR damper is also very stable and fail safe. MR fluid contains a suspension of iron particles in a carrier fluid such as oil [1].…”

Section: Introductionmentioning

confidence: 99%

Semiactive Vibration Control Using a Magnetorheological Damper and a Magnetorheological Elastomer Based on the Bouc-Wen Model

Zhu

Rui

2014

Shock and Vibration

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A vibration control system is put forward using a magnetorheological damper (MRD) and a magnetorheological elastomer (MRE) connected in series. In order to model the hysteresis of the MRD, a Bouc-Wen model and a corresponding parameter identification method are developed for the MRD. The experimental results validate the proposed Bouc-Wen model that can predict the hysteretic behavior of the MRD accurately. The role of the MRE is illustrated by an example of a single degree-of-freedom system. A semiactive vibration control strategy of the proposed vibration control system is proposed. To validate this new approach, experiments are conducted and the results highlight significantly improved vibration reduction effect of the proposed vibration control system than the vibration control system only using the MRD.

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Section: Introductionmentioning

confidence: 99%

Semiactive Vibration Control Using a Magnetorheological Damper and a Magnetorheological Elastomer Based on the Bouc-Wen Model

Zhu

Rui

2014

Shock and Vibration

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“…Yang et al [10] developed a large-scale MR fluid damper for civil engineering applications for vibration control. Dyke and Spencer [11] and Chandiramani and Purohit [12] controlled MR dampers using several semi-active controllers for vibration control.…”

Section: Introductionmentioning

confidence: 99%

The field-dependent shock profiles of a magnetorhelogical damper due to high impact: an experimental investigation

Kim

Choi

2014

Smart Mater. Struct.

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This work proposes a new damper featuring magnetorheological fluid (MR damper) and presents its field-dependent damping forces due to high impact. To achieve this goal, a large MR damper, which can produce a damping force of 100 kN at 6 A, is designed and manufactured based on the analysis of the magnetic flux intensity of the damper. After identifying the field-dependent damping force levels of the manufactured MR damper, a hydraulic horizontal shock tester is established. This shock testing system consists of a velocity generator, impact mass, shock programmer, and test mass. The MR damper is installed at the end of the wall in the shock tester and tested under four different experimental conditions. The shock profile characteristics of the MR damper due to different impact velocities are investigated at various input current levels. In addition, the inner pressure of the MR damper during impact, which depends on the input's current level, is evaluated at two positions that can represent the pressure drop that generates the damping force of the MR damper. It is demonstrated from this impact testing that the shock profiles can be changed by the magnitude of the input current applied to the MR damper. It directly indicates that a desired shock profile can be achieved by installing the MR damper associated with appropriate control logics to adjust the magnitude of the input current.

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“…When designing the algorithm support for AVC systems, a frequent assumption is that the controlled structure maintains its dynamic properties throughout the control procedure. This assumption enables the straightforward tuning of some controllers used in vibration attenuation like positive position feedback (PPF) [2,4], while, in model-based algorithms such as linear quadratic (LQ) [3,5] or model predictive control [6][7][8] (MPC), it allows the use of a relatively precise nominal model. However, not every AVC application fits this convenient premise.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Model Predictive Vibration Control of a Cantilever Beam with Real-Time Parameter Estimation

Takács

Polóni

Rohal’-Ilkiv

2014

Shock and Vibration

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This paper presents an adaptive-predictive vibration control system using extended Kalman filtering for the joint estimation of system states and model parameters. A fixed-free cantilever beam equipped with piezoceramic actuators serves as a test platform to validate the proposed control strategy. Deflection readings taken at the end of the beam have been used to reconstruct the position and velocity information for a second-order state-space model. In addition to the states, the dynamic system has been augmented by the unknown model parameters: stiffness, damping constant, and a voltage/force conversion constant, characterizing the actuating effect of the piezoceramic transducers. The states and parameters of this augmented system have been estimated in real time, using the hybrid extended Kalman filter. The estimated model parameters have been applied to define the continuous state-space model of the vibrating system, which in turn is discretized for the predictive controller. The model predictive control algorithm generates state predictions and dual-mode quadratic cost prediction matrices based on the updated discrete state-space models. The resulting cost function is then minimized using quadratic programming to find the sequence of optimal but constrained control inputs. The proposed active vibration control system is implemented and evaluated experimentally to investigate the viability of the control method.

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Semi-Active Control Using Magnetorhelogical Dampers with Output Feedback and Distributed Sensing

Cited by 7 publications

References 18 publications

Semiactive Vibration Control Using a Magnetorheological Damper and a Magnetorheological Elastomer Based on the Bouc-Wen Model

Semiactive Vibration Control Using a Magnetorheological Damper and a Magnetorheological Elastomer Based on the Bouc-Wen Model

The field-dependent shock profiles of a magnetorhelogical damper due to high impact: an experimental investigation

Adaptive Model Predictive Vibration Control of a Cantilever Beam with Real-Time Parameter Estimation

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