Results 11 to 20 of about 556,588 (202)
SIMULATION OF FRACTURE USING A MESH-DEPENDENT FRACTURE CRITERION IN THE DISCRETE ELEMENT METHOD [PDF]
Recently, Pohrt and Popov have shown that for simulation of adhesive contacts a mesh dependent detachment criterion must be used to obtain the mesh-independent macroscopic behavior of the system.
Andrey Dimaki +3 more
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Expansion of Linear and Semi-Linear Systems and the Popov Criterion [PDF]
In this paper we shall consider the operation of system expansion in the case of linear and semilinear systems. The emphasis here is on stability theory with particular attention being given to an extension of the Popov criterion in Anderson's multivariable form (see Anderson (1965) and Tokumaru and Saito (1965) ).
Banks, S.P
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Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control
In strip rolling, hydraulic automatic gauge control (HAGC) system is the key element to guarantee the precision of strip gauge. The stability of the kernel pressure closed loop (PCL) in the HAGC system plays an essential role in guaranteeing the rolling ...
Yong Zhu +6 more
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Applications of the Multivariable Popov Criterion† [PDF]
ABSTRACT Two classes of systems are considered for the application of the multivariable Popov criterion. The first is obtained from a linear, finite-dimensional system with a state feedback law derived from a quadratic loss function minimization problem.
J. B. MOORE, B. D. O. ANDERSON
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Accurate and precise positioning control is critical in designing a positioning servo pneumatic system. The internal friction force of the pneumatic is one of the disturbances that make it challenging to achieve accurate and precise positioning. Dynamic
Khairun Najmi Kamaludin +6 more
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In this paper, a new stability criterion for nonlinear feedback systems which include a nonlinearity consisting of the main term and the deviation term is presented. The main term is assumed to be time-invariant and to depend only upon the output of the linear part.
FURUTANI, Eiko +2 more
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Social space as a condition of memory in the development of human activity
Urgency of the research. is related to the need to study the species division and classification of the phenomenon of social space, which defines the demarcation in the understanding of the formation of different types of space, its modalities, as a rule,
Oleg Maltsev
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Contribution to stability analysis of nonlinear control systems [PDF]
The Popov criterion for the stability of nonlinear control systems is considered. The Popov criterion gives sufficient conditions for stability of nonlinear systems in the frequency domain.
varc Ivan
doaj
About intuition mechanisms in the context of human activity
Urgency of the research. The following article represents a research of rational and irrational dialectic contradiction, activity development sources, identification of the field of mechanisms of an intuition in its action, as well as categorial ...
Oleg Maltsev
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An Extension of Popov Criterion to Multivariable Time-Varying Nonlinear Systems. Application to Criterion for Existence of Stable Limit Cycles [PDF]
Projet SOSSOThis report deals with sufficient conditions for absolute stability of multivariable control systems. The proposed conditions extend in a simple way the classical Popov criterion to time-varying memoryless nonlinearities.
Krasnosel'Skii, Alexander M. +1 more
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