Results 71 to 80 of about 2,377 (166)

Analysis and Design of Complex-Valued Linear Systems

, 2018
This paper studies a class of complex-valued linear systems whose state evolution dependents on both the state vector and its conjugate. The complex-valued linear system comes from linear dynamical quantum control theory and is also encountered when a ...
Zhou, Bin
core   +1 more source

An inverse method for structural modification of a subsystem using constrained eigenstructure assignment method to allocate single resonant frequency of whole structure

Nihon Kikai Gakkai ronbunshu
NV (Noise and vibration) performance of a mechanical system is determined by the contributions of all subsystems that make up the mechanical system. However, complex mechanical systems such as automobiles are concurrently developed, in which the supplier
Kengo MURAKAMI, Yuichi MATSUMURA, Masashi INABA   +2 more
doaj   +1 more source

New geometric results in eigenstructure assignment

, 2019
The focus of this paper is the connection between two foundational areas of LTI systems theory: geometric control and eigenstructure assignment. In particular, we study the properties of the null-spaces of the reachability matrix pencil and of the Rosenbrock system matrix, which have been extensively used as two computational building blocks for the ...
Padula, Fabrizio, Ferrante, Augusto, Ntogramatzidis, Lorenzo   +2 more
openaire   +2 more sources

Flutter suppression using eigenspace freedoms to meet requirements [PDF]

A constrained optimization methodology has been developed which allows specific use of eigensystem freedoms to meet design requirements. A subset of the available eigenvector freedoms was employed.
Adams, William M., Jr., Christhilf, David M., Fennell, Robert E.   +2 more
core   +1 more source

The Algebraic Theory of Operator Matrix Polynomials with Applications to Aeroelasticity in Flight Dynamics and Control

Mathematical and Computational Applications
This paper develops an algebraic framework for operator matrix polynomials and demonstrates its application to control-design problems in aeroservoelastic systems.
Belkacem Bekhiti, Kamel Hariche, Vasilii Zaitsev, Guangren R. Duan, Abdel-Nasser Sharkawy   +4 more
doaj   +1 more source

Eigenspace techniques for active flutter suppression [PDF]

The use of eigenspace techniques for the design of an active flutter suppression system for a hypothetical research drone is discussed. One leading edge and two trailing edge aerodynamic control surfaces and four sensors (accelerometers) are available ...
Farm, Jerome A., Garrard, William L., Liebst, Bradley S.   +2 more
core   +1 more source

Stability robustness improvement of direct eigenspace assignment based feedback systems using singular value sensitivities [PDF]

A methodology to improve the stability robustness of feedback control systems designed using direct eigenspace assignment techniques is presented. The method consists of considering the sensitivity of the minimum singular value of the return difference ...
Garg, Sanjay
core   +1 more source

Event-Triggered Dynamic Coverage Control for Multiple Stratospheric Airships. [PDF]

Sensors (Basel), 2022
Zhang Y, Zhu M, Chen T.
europepmc   +1 more source

Randomized controlled trial of early, small-volume formula supplementation among newborns: A study protocol. [PDF]

PLoS One, 2022
Ginsburg AS, Braima de Sa A, Nankabirwa V, Co R, Murungi J, Kim MO, Brim R, Namiiro F, Namugga O, Hartigan-O'Connor DJ, Roberts SB, Flaherman V.   +11 more
europepmc   +1 more source

Wind-tunnel free-flight investigation of a supersonic persistence fighter [PDF]

Wind-tunnel free-flight tests have been conducted in the Langley 30- by 60-Foot Wind Tunnel to examine the high-angle-of-attack stability and control characteristics and control law design of a supersonic persistence fighter (SSPF) at 1 g flight ...
Boland, Joseph R., Hahne, David E., Wendel, Thomas R.   +2 more
core   +1 more source