Identification of viscoelastic model of four-wire suspension system in optical pickup actuator

Ren-Jung Chang, Zheng Y. Liu

Research output: Contribution to journalArticle

Abstract

A novel viscoelastic model of four-wire suspension structure with damping gel in an optical pickup actuator was identified and validated. A two-stage method was developed for the identification of inertia, damping, and spring parameters in the dynamic model. The inertia and spring parameters were identified from static tests. With the identified parameters in the dynamic model, the damping parameters were identified through sinusoidal excitation tests. The accuracy of utilizing fractional derivative to model the damping of polymer damper was validated by carrying out error analysis. The fractional transfer function with voltage input was identified and compared with the transfer function of classical model.

Original languageEnglish
Pages (from-to)731-744
Number of pages14
JournalTransactions of the Canadian Society for Mechanical Engineering
Volume41
Issue number5
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Pickups
Identification (control systems)
Actuators
Damping
Wire
Transfer functions
Dynamic models
Error analysis
Gels
Derivatives
Electric potential
Polymers

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

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abstract = "A novel viscoelastic model of four-wire suspension structure with damping gel in an optical pickup actuator was identified and validated. A two-stage method was developed for the identification of inertia, damping, and spring parameters in the dynamic model. The inertia and spring parameters were identified from static tests. With the identified parameters in the dynamic model, the damping parameters were identified through sinusoidal excitation tests. The accuracy of utilizing fractional derivative to model the damping of polymer damper was validated by carrying out error analysis. The fractional transfer function with voltage input was identified and compared with the transfer function of classical model.",
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Identification of viscoelastic model of four-wire suspension system in optical pickup actuator. / Chang, Ren-Jung; Liu, Zheng Y.

In: Transactions of the Canadian Society for Mechanical Engineering, Vol. 41, No. 5, 01.01.2017, p. 731-744.

Research output: Contribution to journalArticle

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