Limiting performance analysis of large systems using an approximate optimization scheme

Pilkey, Walter D.; Kang, Weize; Schramm, Uwe

doi:10.1016/s0168-874x(97)00003-6

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…(2) The conventional design method failed to consider the critical initial velocity. The limiting performance of shock isolation system is studied by literatures [11][12][13][14][15][16][17], where the critical initial velocity is derived. Usually, the critical initial velocity is ignored by engineers, but it is really an important factor for optimal control force.…”

Section: Introductionmentioning

confidence: 99%

Study on the optimization of the shock isolation system based on the limiting performance analysis

Lou

Sun

Tang³

et al. 2013

Int. J. Dynam. Control

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Selecting suitable stiffness for shock isolation system is conventional design mode; there is a bug in this design mode: high shock isolation efficiency always results in large relative displacement. A more feasible design mode is proposed based on the optimal control force: at the beginning of shock response, the relative displacement is small and relative velocity is high, control force should be offered by damping mostly; when the relative velocity become low and relative displacement become large, control force should be offered by spring mostly. The critical initial velocity is decided by limiting performance analysis. In that condition, the optimal control force can be realized by passive device if the function of force-relative displacement and forcerelative velocity comply with some rule. The higher shock isolation efficiency and the smaller relative displacement will be achieved at the same time. An optimal shock isolation system is constructed based on quadratic damping and linear stiffness, and that is proved theoretically. The optimal model is calculated by Runge-Kutta method, and the significant conclusion is obtained: comparing with conventional shock isolation system, the optimal system that is designed with the new mode can get more excellent shock isolation performance.

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Section: Introductionmentioning

confidence: 99%

Study on the optimization of the shock isolation system based on the limiting performance analysis

Lou

Sun

Tang³

et al. 2013

Int. J. Dynam. Control

View full text Add to dashboard Cite

show abstract

“…(2) The conventional design method failed to consider the critical initial velocity. The limiting performance of shock isolation system is studied by literatures [5][6][7][8], where the critical initial velocity is derived. Usually, the critical initial velocity is ignored by engineers, but it is really an important factor for optimal control force.…”

Section: Introductionmentioning

confidence: 99%

The Limiting Performance Analysis of the Shock Isolation System

Lou

Sun

Tang

2012

AMR

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The conventional design of the shock isolation system has focused on selecting suitable stiffness only, so high shock isolation efficiency always gives rise to large relative displacement. In order to design an optimal passive shock isolator, the limiting performance of the shock isolation system is analyzed. The relationship between the shock isolation criterion and the critical initial velocity is studied. The optimal control force is derived and the possibility of engineering implementation of the optimal control force is discussed. The limiting performance analysis shows that the performance of the optimal shock isolator is much more excellent than that of the conventional shock isolator.

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