Impact of inerter nonlinearities on vehicle suspension control

Wang, Fu-Cheng; Su, Wei-Jiun

doi:10.1080/00423110701519031

Cited by 116 publications

(76 citation statements)

References 11 publications

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“…Since the initial application in Formula One racing car suspension systems [2], inerters have been applied to various mechanical systems including vehicle suspensions [3][4][5][6][7][8][9], motorcycle steering systems [10], building vibration control [11] and train suspensions [12,13]. The interest in passive network synthesis has also been rekindled [14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis for isolation system with inerter

Chen

Shu

et al. 2014

Proceedings of the 33rd Chinese Control Conference

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Fundamental analysis of vibration system with inerter is carried out in this paper based on a "uni-axial" singledegree-of-freedom isolation system. The condition that force and displacement transmissibilities are identical is derived for all passive isolators composed of springs, dampers and inerters. Specifically, the inerter in parallel connection and the one in series connection are analyzed in terms of the invariant points and isolating bandwidth of the considered transmissibilities. It is analytically demonstrated that both the parallel-connected and the series-connected inerters can effectively lower the invariant points and enlarge the isolating bandwidth. It is also shown that the series-connected inerter can depict some mixed-behaviours between the configuration with only a spring and the configuration with a parallel connection of a spring and an inerter, due to its inherent property of the physical structure. The weakness of isolation at high frequency caused by inerter is also analytically demonstrated.

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Section: Introductionmentioning

confidence: 99%

Vibration analysis for isolation system with inerter

Chen

Shu

et al. 2014

Proceedings of the 33rd Chinese Control Conference

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“…In the experiment, the output force data of the inerter prototype exp was collected. A population of candidate frictional parameter solutions was given to the Stribeck friction model described by (26) and (27). The resulting model output forces mod = f were then compared with the target exp using the following loss function:…”

Section: Frictional Parameters Of the Ball Screw Type Inertermentioning

confidence: 99%

Modeling, Testing, and Characteristic Analysis of a Planetary Flywheel Inerter

Wei-rui

2018

Shock and Vibration

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We propose the planetary flywheel inerter, which is a new type of ball screw inerter. A planetary flywheel consists of several planetary gears mounted on a flywheel bracket. When the flywheel bracket is driven by a screw and rotating, each planetary gear meshing with an outer ring gear generates a compound motion composed of revolution and rotation. Theoretical analysis shows that the output force of the planetary flywheel inerter is proportional to the relative acceleration of one terminal of the inerter to the other. Optimizing the gear ratio of the planetary gears to the ring gear allows the planetary flywheel to be lighter than its traditional counterpart, without any loss on the inertance. According to the structure of the planetary flywheel inerter, nonlinear factors of the inerter are analyzed, and a nonlinear dynamical model of the inerter is established. Then the parameters in the model are identified and the accuracy of the model is validated by experiment. Theoretical analysis and experimental data show that the dynamical characteristics of a planetary flywheel inerter and those of a traditional flywheel inerter are basically the same. It is concluded that a planetary flywheel can completely replace a traditional flywheel, making the inerter lighter.

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“…Inerter concepts have been successfully applied to vehicle suspensions (Wang and Su, 2008;Wang et al, 2009aWang et al, , 2012Wang and Liao, 2010;Wang and Chan, 2011;Jiang et al, 2012Jiang et al, , 2013 and building structures (Wang et al, 2010a) to suppress vibrations. At present, we have proposed four inerter prototypes: the rackpinion inerter (Wang and Smith, 2004), the ball-screw inerter (Wang and Su, 2008), the hydraulic inerter , and the mechatronic inerter network (Wang and Chan, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…At present, we have proposed four inerter prototypes: the rackpinion inerter (Wang and Smith, 2004), the ball-screw inerter (Wang and Su, 2008), the hydraulic inerter , and the mechatronic inerter network (Wang and Chan, 2011). The former three are purely mechanical structures whose parameters cannot be easily adjusted according to the operating conditions; therefore, we developed the mechatronic inerter network that consists of two parts: the ballscrew inerter and permanent magnet electric machinery (PMEM).…”

Section: Introductionmentioning

confidence: 99%

Vibration control of an optical table employing mechatronic inerter networks

Wang

2014

Journal of Vibration and Control

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This paper applies a newly developed mechatronic inerter network to suppress vibrations of a full optical table. Optical tables are normally applied to insulate precision machines from two types of disturbances: ground disturbances from the environment and load disturbances from the equipment. These two disturbances can be independently controlled by disturbance response decoupling (DRD) techniques. For example, we can isolate the ground disturbances by soft passive suspensions and improve the load responses by active control. However, the passive elements cannot be easily adjusted according to the operating conditions. Therefore, this paper applies mechatronic inerter networks to a full optical table, and optimizes the ground responses by connecting the networks to suitable electric circuits. We then apply DRD techniques to improve the load responses without influencing the ground responses. The designed mechatronic inerter networks and active controllers are implemented to a full optical table for experimental verification. Based on the results, the proposed mechatronic inerter networks and DRD structures are deemed effective in improving system responses.

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Impact of inerter nonlinearities on vehicle suspension control

Cited by 116 publications

References 11 publications

Vibration analysis for isolation system with inerter

Vibration analysis for isolation system with inerter

Modeling, Testing, and Characteristic Analysis of a Planetary Flywheel Inerter

Vibration control of an optical table employing mechatronic inerter networks

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