Parametric study of the behavior of double toggle switching mechanisms

Deb, Manan and Sen, Dibakar (2013) Parametric study of the behavior of double toggle switching mechanisms. In: MECHANISM AND MACHINE THEORY, 63 . pp. 8-27.

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Abstract

The paper identified and characterized a special multi-degree of freedom toggle behavior, called double toggle, observed in a typical MCCB switching mechanism. For an idealized system, the condition of toggle sequence is derived geometrically. The existing tools available in a multi-body dynamics package are used for exploring the dynamic behavior of such systems parametrically. The double toggle mechanism is found to make the system insensitive to the operator's behavior; however, the system is vulnerable under extreme usage. The linkage kinematics and stopper locations are found to have dominant role on the behavior of the system. It is revealed that the operating time is immune to the inertial property of the input link and sensitive to that of the output link. Novel designs exploiting this observation, in terms of spring and toggle placements, to enhance switching performance have also been reported in the paper. Detailed study revealed that strategic placement of the spring helps in selective alteration of system performance. Thus, the study establishes the critical importance of the kinematic design of MCCB over the dynamic parameters. (C) 2013 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	MECHANISM AND MACHINE THEORY
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	Copyright for this article belongs to PERGAMON-ELSEVIER SCIENCE LTD, ENGLAND
Keywords:	Toggle;Circuit breaker;Switching mechanism;Kinematic design;Dynamic simulation
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	14 Mar 2013 09:48
Last Modified:	14 Mar 2013 09:48
URI:	http://eprints.iisc.ac.in/id/eprint/46055

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