VFC – Variational Feedback Controller and its application to semi-active suspensions

Pepe, Gianluca; Carcaterra, Antonio

doi:10.1016/j.ymssp.2016.01.002

Cited by 40 publications

(28 citation statements)

References 21 publications

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“…In (10), x 0 stands for the initial condition defined by w 0 ( ξ ) and

{\overset{w}{true}}_{0} false(ξ false)

. Note that the dynamical system (7) can be used to describe a wide range of semi‐actively controlled structures, such as cantilever structures with embedded elastomer‐based blocks, 34 span structures supported with magneto‐rheological dampers 35 or electromagnetic devices of the motional type, 36 smart buildings operating with magneto‐rheological or tuned mass dampers, 37‐40 and vehicular suspension systems 41 …”

Section: The Investigated Systemmentioning

confidence: 99%

Decentralized semi‐active structural vibration control based on optimal system modelling

Pisarski

Szmidt

Konowrocki

2020

Struct Control Health Monit

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The problem of decentralized semi-active stabilization of vibration of a beam structure is studied. The decentralized controller's architecture is attained by means of optimal system modelling. In this approach, based on a specially designed and optimized set of basis functions, the solution to the continuous Euler-Bernoulli beam equation is approximated by a discrete system, where the mass and stiffness matrices ensure that the assumed stabilizing control law can be operated by using solely the local state information. The performance of the method is examined through numerical experiments for a series of free-vibration scenarios with comparison to competitive decentralized and centralized control strategies. The performance impact of the selection of the parameters of the optimal system model is also studied. The designed method allows practical modular arrangements of the control system and is applicable to large-scale structures.

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“…In (10), x 0 stands for the initial condition defined by w 0 ( ξ ) and

{\overset{w}{true}}_{0} false(ξ false)

Section: The Investigated Systemmentioning

confidence: 99%

Decentralized semi‐active structural vibration control based on optimal system modelling

Pisarski

Szmidt

Konowrocki

2020

Struct Control Health Monit

View full text Add to dashboard Cite

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“…-characteristics of the damping element; -control of a semi-active suspension. A considerable share of scientists worldwide is involved in the investigation of these groups of semi-active suspensions (Savaresi, Spelta 2009;Savaresi et al 2010;Mulla, Unaune 2013;Pei et al 2016;Rao et al 2010;Krauze, Kasprzyk 2016;Emam, Abdel Ghany 2012;Marzbanrad et al 2013;Kashem et al 2015;Aly, Salem 2013;Pepe, Carcaterra 2016;ZF Friedrichshafen AG 2011;Dąbrowski, Ślaski 2016).…”

Section: System Real-time Adaptationmentioning

confidence: 99%

Technological Measures of Forefront Road Identification for Vehicle Comfort and Safety Improvement

2019

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This paper presents the technological measures currently being developed at institutes and vehicle research centres dealing with forefront road identification. In this case, road identification corresponds with the surface irregularities and road surface type, which are evaluated by laser scanning and image analysis. Real-time adaptation, adaptation in advance and system external informing are stated as sequential generations of vehicle suspension and active braking systems where road identification is significantly important. Active and semi-active suspensions with their adaptation technologies for comfort and road holding characteristics are analysed. Also, an active braking system such as Anti-lock Braking System (ABS) and Autonomous Emergency Braking (AEB) have been considered as very sensitive to the road friction state. Artificial intelligence methods of deep learning have been presented as a promising image analysis method for classification of 12 different road surface types. Concluding the achieved benefit of road identification for traffic safety improvement is presented with reference to analysed research reports and assumptions made after the initial evaluation.

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“…Marek et al (2) presented a synthesis of a weighted multitone optimal controller and investigated the effect of identification time selection on the vibration transmission function of an active vibration reduction system. Pepe and Carcaterra (3) proposed a variational feedback controller (VFC) theory and applied it to improve a nonlinear quarter suspension performance. Ahmed et al (4) designed a sophisticated proportional integral and derivative (PID) control for a quarter car model for the automotive industry and validated its performance by comparing passive and active suspension systems.…”

Section: Introductionmentioning

confidence: 99%

Novel Method of Forecasting Performance of Full Vehicle Suspension by Decoupling Analysis and Vibration Sensing Experiments

Wu¹,

Zuo²,

Wang³

2020

Sensors and Materials

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A quarter, half, or full car model is often adopted as the basis of vibration control for the design and evaluation of automotive suspension systems. Regarding automotive suspension systems, a quarter vehicle design-and-test result cannot be used as a substitute for a full vehicle owing to the coupling phenomenon. In this study, by deriving the coupling ratios between the sprung mass of a full car and four sprung masses of quarter cars, the analysis of a full vehicle dynamics is performed with 14 degrees of freedom in the conventional vertical and assisted lateral directions. It is found that for car suspensions, the full car model can be conditionally expressed by four independent quarter car models. Moreover, we verify our proposed novel performance forecasting method for a full vehicle suspension through analyses and investigations via suitable designated vibration sensing experiments. Furthermore, a case study shows that the vibration of a full vehicle can be quantitatively obtained on the basis of test results of quarter suspensions.

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VFC – Variational Feedback Controller and its application to semi-active suspensions

Cited by 40 publications

References 21 publications

Decentralized semi‐active structural vibration control based on optimal system modelling

Decentralized semi‐active structural vibration control based on optimal system modelling

Technological Measures of Forefront Road Identification for Vehicle Comfort and Safety Improvement

Novel Method of Forecasting Performance of Full Vehicle Suspension by Decoupling Analysis and Vibration Sensing Experiments

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