Optimization of an impact drive mechanism based on real-coded genetic algorithm

Ha, Jih-Lian; Fung, Rong‐Fong; Han, Chang-Fu

doi:10.1016/j.sna.2005.03.001

Cited by 29 publications

(15 citation statements)

References 8 publications

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“…α, β and γ control the shape of the hysteresis loop. The same form of the Bouc-Wen model was also employed to describe the frictional hysteresis force of an impact drive mechanism by [118].…”

Section: Piezoelectric Actuatorsmentioning

confidence: 99%

The Hysteresis Bouc-Wen Model, a Survey

Ismail¹,

Ikhouane²,

Rodellar³

2009

Arch Computat Methods Eng

651

314

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Structural systems often show nonlinear behavior under severe excitations generated by natural hazards. In that condition, the restoring force becomes highly nonlinear showing significant hysteresis. The hereditary nature of this nonlinear restoring force indicates that the force cannot be described as a function of the instantaneous displacement and velocity. Accordingly, many hysteretic restoring force models were developed to include the time dependent nature using a set of differential equations. This survey contains a review of the past, recent developments and implementations of the Bouc-Wen model which is used extensively in modeling the hysteresis phenomenon in the dynamically excited nonlinear structures.

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Section: Piezoelectric Actuatorsmentioning

confidence: 99%

The Hysteresis Bouc-Wen Model, a Survey

Ismail¹,

Ikhouane²,

Rodellar³

2009

Arch Computat Methods Eng

651

314

View full text Add to dashboard Cite

show abstract

“…Liu et al (2009) studied the IDM robot actuated by a piezoelectric bimorph (which is of a different configuration of piezoelectric materials to generate motion or deformation) based on a model without consideration of the inertia of the PA. Makkar et al (2007) and Li et al (2009) studied the modeling for friction without consideration of the inertia of PA. Ha et al (2005) optimized the mass ratio of the block and main body and the driving waveform (Fig. 1); however they have not included the inertia of PA in their analysis.…”

Section: Introductionmentioning

confidence: 99%

A computationally efficient model to capture the inertia of the piezoelectric stack in impact drive mechanism in the case of the in-pipe inspection application

Liu

Xiong

et al. 2016

Mech. Sci.

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Abstract. This paper presents a new model for the piezoelectric actuator (PA) in the context of in the impact drive mechanism (IDM) for the in-pipe inspection application. The feature of the model is capturing the inertia of PA stack in a distributed manner as opposed to the lumped manner in literature. The benefit arising from this feature is a balanced trade-off between computational efficiency and model accuracy. The study presented in this paper included both theoretical development (i.e. the model of the piezoelectric actuator and the model of the entire IDM which includes the actuator) and experimental verification of the model. The study has shown that (1) the inertia of the PA in such a robot will significantly affect the accuracy of the entire model of IDM and (2) the simulation of the dynamic behavior with the proposed model is sufficiently accurate by comparing with the experiment. It is thus recommended that the inertia of the PA be considered in the entire model of the IDM robot. The model is an analytical type, which has a high potential to be used for the model-based control of the IDM robot and optimization of its design for a much improved performance of the IDM system.

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“…Although, it recently has been found more extensive applications, they most have low calculation efficiency because the procedure of the GA [8,9] must use the operation by encoding and decoding. In this study, the real-coded genetic algorithm (RGA) [10,11] is adopted because it is more natural to represent the genes directly as real numbers. As a result that the method is calculated by real-code, it can shorten the calculating time.…”

Section: Introductionmentioning

confidence: 99%