Nonlinear natural control of an experimental beam

L. Meirovitch, H. Baruh, R. C. Montgomery, J. P. Williams

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This paper is concerned with an experiment conducted at the NASA Langley Research Center that was designed to control the motion of a beam. The experimental setup consists of a free-free uniform beam acted upon by four electromagnetic force actuators, with the motion being measured by nine displacement sensors. The entire assembly is linked to a digital computer permitting on-line real-time computation of the control forces. The control scheme is based on the independent modal-space control method in conjuction with a nonlinear, on-off control law for the modal forces. The actuator forces are then synthesized from the modal forces by means of a linear transformation, resulting in quantized forces. The sensors’ data are processed by modal filters. It is observed that the independent controls are very effective in suppressing the motion of the beam, even though there is about a 50% difference between the actual and the analytically computed natural frequencies.

Original languageEnglish (US)
Pages (from-to)437-442
Number of pages6
JournalJournal of Guidance, Control, and Dynamics
Volume7
Issue number4
DOIs
StatePublished - Jan 1 1984

Fingerprint

sensor
Motion
Actuator
filter
Actuators
Electromagnetic Force
actuators
Sensor
off-on control
Linear transformations
Force Control
Sensors
Force control
Digital computers
linear transformations
Linear transformation
NASA
digital computers
Natural Frequency
experiment

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Aerospace Engineering
  • Space and Planetary Science
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Meirovitch, L. ; Baruh, H. ; Montgomery, R. C. ; Williams, J. P. / Nonlinear natural control of an experimental beam. In: Journal of Guidance, Control, and Dynamics. 1984 ; Vol. 7, No. 4. pp. 437-442.
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Nonlinear natural control of an experimental beam. / Meirovitch, L.; Baruh, H.; Montgomery, R. C.; Williams, J. P.

In: Journal of Guidance, Control, and Dynamics, Vol. 7, No. 4, 01.01.1984, p. 437-442.

Research output: Contribution to journalArticle

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