H(infinity) optimized wave-absorbing control - Analytical and experimental results

Matsuda, Khoichi; Fujii, Hironori

doi:10.2514/3.21139

Cited by 220 publications

(75 citation statements)

References 11 publications

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“…A significant amount of research has been carried out on the synthesis of poly(vinyl acetal), [1][2][3] especially poly(vinyl butyral) (PVBu), due to its excellent commercial applications. Minamino 4 had reported the preparation of PVBu with a degree of acetalization of 80 -90.5 mol %.…”

Section: Introductionmentioning

confidence: 99%

Preparation of poly(vinyl butyral) with high acetalization rate

Chetri¹,

Dass²

2001

J of Applied Polymer Sci

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Poly(vinyl alcohol) (PVA) can be dissolved in a nonaqueous medium in the presence of catalytic concentration of ethyl nitrate dimethyl sulfoxide, C 2 H 5 ONO 2 ⅐ DMSO (EN ⅐ DMSO). From the PVA solution, poly(vinyl butyral) (PVBu) was prepared by acid-catalyzed homogeneous acetalization of PVA with butyraldehyde. The formation of PVBu was confirmed by IR and 1 H-NMR spectra. The degree of acetalization of PVBu was found to be 95 mol %, which was verified by 1 H-NMR data and acetylation method. The molecular mass of the polymer was determined by GPC method. The glass transition temperature, T g , was measured from differential scanning calorimetric (DSC) thermograms. Thermal stabilities were checked by thermogravimetric analysis (TGA) and differential thermogravimetry (DTG). The acetal decomposed in three stages. The corresponding initial decomposition temperatures were found to be 285, 390, and above 500°C.

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Section: Introductionmentioning

confidence: 99%

Preparation of poly(vinyl butyral) with high acetalization rate

Chetri¹,

Dass²

2001

J of Applied Polymer Sci

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“…Many approximation methods are present in the literature for continuous time domain as well as for discrete time domain. Some of the widely used continuous time domain approximations are, 'Crone or Oustaloup approximation' (Oustaloup et al, 2000;Sabatier et al, 2002), 'Carlson approximation' (Carlson & Hajlijak, 1964), 'Matsuda approxiamtion' (Matsuda & Fujii, 1993) etc. For discrete time approximation generally different techniques or operators for s → z transformation are used and then the fractional power is raised on the approximation function, by which s → z transformation was achieved.…”

Section: Fractional Calculus Implementationmentioning

confidence: 99%

A fractional order fuzzy PID controller for binary distillation column control

Mishra

Kumar

Rana

2015

Expert Systems with Applications

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“…The methods developing integer order approximations can be used for time domain analysis of fractional order control systems similar to classical control approaches. Some of the well known methods for evaluating rational approximations are the Continued Fractional Expansion (CFE) method, Oustaloup's method, Carlson's method, Matsuda's method, Chareff's method, least square methods and others [18,[37][38][39][40][41]. In this paper, the CFE method given in [35,42] is used for time domain simulation of nonlinear control systems with FOTF.…”

Section: Fractional Order Dynamicsmentioning

confidence: 99%

Limit Cycles in Nonlinear Systems with Fractional Order Plants

et al. 2014

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Abstract:In recent years, there has been considerable interest in the study of feedback systems containing processes whose dynamics are best described by fractional order derivatives. Various situations have been cited for describing heat flow and aspects of bioengineering, where such models are believed to be superior. In many situations these feedback systems are not linear and information on their stability and the possibility of the existence of limit cycles is required. This paper presents new results for determining limit cycles using the approximate describing function method and an exact method when the nonlinearity is a relay characteristic.

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H(infinity) optimized wave-absorbing control - Analytical and experimental results

Cited by 220 publications

References 11 publications

Preparation of poly(vinyl butyral) with high acetalization rate

Preparation of poly(vinyl butyral) with high acetalization rate

A fractional order fuzzy PID controller for binary distillation column control

Limit Cycles in Nonlinear Systems with Fractional Order Plants

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