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Robust controller designs for second-order dynamic system: A virtual passive approachA robust controller design is presented for second-order dynamic systems. The controller is model-independent and itself is a virtual second-order dynamic system. Conditions on actuator and sensor placements are identified for controller designs that guarantee overall closed-loop stability. The dynamic controller can be viewed as a virtual passive damping system that serves to stabilize the actual dynamic system. The control gains are interpreted as virtual mass, spring, and dashpot elements that play the same roles as actual physical elements in stability analysis. Position, velocity, and acceleration feedback are considered. Simple examples are provided to illustrate the physical meaning of this controller design.
Document ID
19900016053
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Juang, Jer-Nan (NASA Langley Research Center Hampton, VA., United States)
Phan, Minh (National Academy of Sciences - National Research Council Washington, DC., United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1990
Subject Category
Structural Mechanics
Report/Patent Number
NASA-TM-102666
NAS 1.15:102666
Accession Number
90N25369
Funding Number(s)
PROJECT: RTOP 590-14-61-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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