Vibration control of an optical table employing mechatronic inerter networks

Wang, Fu-Cheng; Wu, Sheng-Yao

doi:10.1177/1077546314528365

Cited by 21 publications

(11 citation statements)

References 24 publications

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“…Since the Smith's [1] pioneering contribution in 2002, the inerter has become a popular mechanical device studied and used in different fields, from improved suspension systems in automotive engineering [2]- [6], to steering compensators for high-performance motorcycles [7], suspensions in railway engineering [8]- [10], mitigation of liquid sloshing in storage tanks [11], vibration suppression of optical tables [12] and even aircrafts landing gears [13].…”

Section: Introductionmentioning

confidence: 99%

Novel fluid inerter based tuned mass dampers for optimised structural control of base-isolated buildings

Domenico

Deastra

Ricciardi

et al. 2019

Journal of the Franklin Institute

142

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This work studies the advantageous features of the fluid inerter device for optimised structural control of buildings. Experimental data are first presented to characterise the fluid inerter dynamics, and validate the simplified analytical formulations. Building on these observations, the device is modelled as an inerter in parallel with a nonlinear dashpot representing a power law damping term. The latter dissipative effects are mainly induced by the pressure drops occurring in helical channels due to the fluid viscosity and density. Then, novel passive vibration control schemes are implemented for the earthquake protection of base-isolated buildings by combining the fluid inerter with a tuned mass damper system. To account for the uncertain nature of the earthquake input, the base acceleration is modelled as a Kanai-Tajimi filtered stationary random process. The optimal fluid inerter parameters, namely inertance and damping, are identified numerically by minimising stochastic performance indices relevant to displacement, acceleration, and energy-based measures of the structural response. The nonlinear damping behaviour of the fluid inerter is fully incorporated in the optimal design procedure via the statistical linearization technique. Nonlinear response history analysis under an ensemble of 44 natural earthquake ground motions is carried out to assess the seismic performance of the system. Since inertance and damping are coupled characteristics in a real fluid inerter, design guidelines are finally outlined to determine the actual geometrical and mechanical properties of the device to achieve targeted parameters resulting from the optimisation procedure.

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Section: Introductionmentioning

confidence: 99%

Novel fluid inerter based tuned mass dampers for optimised structural control of base-isolated buildings

Domenico

Deastra

Ricciardi

et al. 2019

Journal of the Franklin Institute

142

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show abstract

“…An inerter was first applied to the suspension systems of Formula 1 racing cars [15] and was found to significantly improve the performance of the suspension systems. [16][17][18] It was subsequently utilized in other mechanical systems such as motorcycles, [19] trains, [20] optical tables, [21] aircraft landing gears, [22] storage tank, [23] and energy-harvesting systems. [24,25] There have also been attempts to use inerter-based systems to control the dynamic responses of civil structures.…”

Section: Introductionmentioning

confidence: 99%

“…An inerter was first applied to the suspension systems of Formula 1 racing cars and was found to significantly improve the performance of the suspension systems . It was subsequently utilized in other mechanical systems such as motorcycles, trains, optical tables, aircraft landing gears, storage tank, and energy‐harvesting systems …”

Section: Introductionmentioning

confidence: 99%

Design of structure with inerter system based on stochastic response mitigation ratio

Pan

Zhang

2018

Struct Control Health Monit

110

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Summary An easy‐to‐use method for a practical design of single‐degree‐of‐freedom (SDOF) structures with inerter systems was developed. The method adopts the stochastic vibration response mitigation ratio as the design index, and expressions of the closed‐form stochastic response are used to evaluate the structural response and optimize the design parameters. Three basic types of inerter systems with tuning and damping magnification mechanisms were considered in this study. The closed‐form stochastic responses of SDOF structures with inerter systems under white‐noise excitations were derived on the basis of the equations of motion. In addition, the response variation patterns due to changes in key parameters of the inerter system were investigated, and the parameter optimization approaches for different inerter systems are proposed on the basis of the response variation patterns. The use of the closed‐form stochastic response mitigation ratio as the design index leads to a rational and simple design process, with the tuning or response extremum conditions employed as complementary conditions for determining the key design parameters. Thus, the proposed method involves the solution of a set of nonlinear equations. Fitted empirical design formulae are provided in this paper for quick calculation of the key parameters of the SDOF structure with the inerter system for a given response mitigation ratio and inherent damping ratio. Moreover, design examples are provided to verify the proposed method. The design results show that the proposed method is effective and more convenient than existing methods. Furthermore, the method can be easily extended for considering seismic excitations and design of structures with other complex‐form inerter systems.

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“…16–18 It has also revived interest in mechatronic network synthesis. 19–22 At present, the common forms of inerters are rack and pinion type, 23 ball screw type, 24 and fluid type. 25…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a new hydropneumatic inerter-based suspension system with semi-active control effect

Lin

Wang

Meng

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper develops a hydropneumatic inerter-based suspension system theoretical model to analyze its performance, based on the mechanical network theory of inerter and semi-active control. Comparison of the stiffness and damping characteristics among a passive hydropneumatic suspension system, semi-active hydropneumatic suspension system based on skyhook control, and hydropneumatic inerter-based suspension system is conducted. Moreover, the relationship between the internal coefficient of the inerter and the damping coefficient of the hydropneumatic suspension is investigated. The simulation results of the flow–volume curves of the hydropneumatic inerter-based suspension system are close to those of the semi-active hydropneumatic suspension system based on skyhook control. Furthermore, the performance of a quarter vehicle model with the hydropneumatic inerter-based suspension system is analyzed and compared to that with the semi-active hydropneumatic suspension system based on skyhook control. The simulation results show that the performance of the hydropneumatic inerter-based suspension system is as good as that of the semi-active hydropneumatic suspension system based on skyhook control, which means that the hydropneumatic inerter-based suspension system can achieve similar performance for semi-active control suspension. Finally, a prototype is developed, and a comparative bench test is carried out to verify the accuracy of the simulations. In addition, the hydropneumatic inerter-based suspension system can achieve semi-active control performance without additional hardware or energy loss.

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Vibration control of an optical table employing mechatronic inerter networks

Cited by 21 publications

References 24 publications

Novel fluid inerter based tuned mass dampers for optimised structural control of base-isolated buildings

Novel fluid inerter based tuned mass dampers for optimised structural control of base-isolated buildings

Design of structure with inerter system based on stochastic response mitigation ratio

Performance analysis of a new hydropneumatic inerter-based suspension system with semi-active control effect

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