Digital control algorithms for microgravity isolation systems

Alok Sinha, Y. P. Wang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

New digital control algorithms have been developed to achieve the desired transmissibility function for a microgravity isolation system. Two approaches have been presented for the controller design in the context of a single degree of freedom system for which an attractive electromagnet is used as the actuator. The relative displacement and the absolute acceleration of the mass have been used as feedback signals. The results from numerical studies are presented. It has been found that the resulting transmissibility is quite close to the desired function. Also, the maximum coil currents required by new algorithms are smaller than the maximum current demanded by the previously proposed lead/lag method.

Original languageEnglish (US)
Pages (from-to)256-263
Number of pages8
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Volume115
Issue number3
DOIs
StatePublished - Jan 1 1993

Fingerprint

Microgravity
microgravity
isolation
Electromagnets
electromagnets
controllers
coils
time lag
Actuators
degrees of freedom
Lead
actuators
Feedback
Controllers

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{037d5465c3ea474fadc06b3f26d3f14b,
title = "Digital control algorithms for microgravity isolation systems",
abstract = "New digital control algorithms have been developed to achieve the desired transmissibility function for a microgravity isolation system. Two approaches have been presented for the controller design in the context of a single degree of freedom system for which an attractive electromagnet is used as the actuator. The relative displacement and the absolute acceleration of the mass have been used as feedback signals. The results from numerical studies are presented. It has been found that the resulting transmissibility is quite close to the desired function. Also, the maximum coil currents required by new algorithms are smaller than the maximum current demanded by the previously proposed lead/lag method.",
author = "Alok Sinha and Wang, {Y. P.}",
year = "1993",
month = "1",
day = "1",
doi = "10.1115/1.2930342",
language = "English (US)",
volume = "115",
pages = "256--263",
journal = "Journal of Vibration and Acoustics, Transactions of the ASME",
issn = "1048-9002",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "3",

}

Digital control algorithms for microgravity isolation systems. / Sinha, Alok; Wang, Y. P.

In: Journal of Vibration and Acoustics, Transactions of the ASME, Vol. 115, No. 3, 01.01.1993, p. 256-263.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Digital control algorithms for microgravity isolation systems

AU - Sinha, Alok

AU - Wang, Y. P.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - New digital control algorithms have been developed to achieve the desired transmissibility function for a microgravity isolation system. Two approaches have been presented for the controller design in the context of a single degree of freedom system for which an attractive electromagnet is used as the actuator. The relative displacement and the absolute acceleration of the mass have been used as feedback signals. The results from numerical studies are presented. It has been found that the resulting transmissibility is quite close to the desired function. Also, the maximum coil currents required by new algorithms are smaller than the maximum current demanded by the previously proposed lead/lag method.

AB - New digital control algorithms have been developed to achieve the desired transmissibility function for a microgravity isolation system. Two approaches have been presented for the controller design in the context of a single degree of freedom system for which an attractive electromagnet is used as the actuator. The relative displacement and the absolute acceleration of the mass have been used as feedback signals. The results from numerical studies are presented. It has been found that the resulting transmissibility is quite close to the desired function. Also, the maximum coil currents required by new algorithms are smaller than the maximum current demanded by the previously proposed lead/lag method.

UR - http://www.scopus.com/inward/record.url?scp=0000921641&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000921641&partnerID=8YFLogxK

U2 - 10.1115/1.2930342

DO - 10.1115/1.2930342

M3 - Article

VL - 115

SP - 256

EP - 263

JO - Journal of Vibration and Acoustics, Transactions of the ASME

JF - Journal of Vibration and Acoustics, Transactions of the ASME

SN - 1048-9002

IS - 3

ER -