Results 71 to 80 of about 65,035 (289)

Performance improvement of discrete‐time linear‐quadratic regulators applied to uncertain linear systems using the Tikhonov regularization method

Asian Journal of Control, EarlyView.
Abstract The linear‐quadratic regulator (LQR) problem of optimal control of an uncertain discrete‐time linear system (DTLS) is revisited in this paper from the perspective of Tikhonov regularization. We show that an optimally chosen regularization parameter reduces, compared to the classical LQR, the values of a scalar error function, as well as the ...
Fernando Pazos, Amit Bhaya
wiley   +1 more source

MATHEMATICAL MODEL OF FUEL PUMP-REGULATOR OF HELICOPTER TURBO-SHAFT ENGINE

Авіаційно-космічна техніка та технологія, 2020
This article discusses the relevance of creating a mathematical model of a hydromechanical fuel regulator as the main component of the parametric diagnostics method.
Игорь Валериевич Оганян
doaj   +1 more source

Using formal methods to support testing [PDF]

, 2008
Formal methods and testing are two important approaches that assist in the development of high quality software. While traditionally these approaches have been seen as rivals, in recent years a new consensus has developed in which they are seen as ...
Bogdanov, K, Bowen, JP, Cleaveland, R, Derrick, J, Dick, JH, Gheorghe, M, Harman, M, Hierons, RM, Kapoor, K, Krause, P, Luettgen, G, Simons, AJH, Vilkomir, S, Woodward, M   +13 more
core  

Complexity Theory and the Operational Structure of Algebraic Programming Systems [PDF]

, 1982
An algebraic programming system is a language built from a fixed algebraic data abstraction and a selection of deterministic, and non-deterministic, assignment and control constructs. First, we give a detailed analysis of the operational structure of an
Asveld, P.R.J., Tucker, J.V.
core   +3 more sources

Young people's occupational aspirations beyond the aspiration discourse: A sociocultural perspective

British Educational Research Journal, EarlyView.
Abstract Young people's aspirations have been the focus of many educational, sociological and psychological studies. This paper argues, firstly, that the concept of aspirations holds greater generative potential than suggested by the policy‐oriented ‘aspiration discourse’.
Jelena Popov
wiley   +1 more source

Optimal model‐based design of experiments for parameter precision: Supercritical extraction case

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

Algebraic Riccati equation based Q and R matrices selection algorithm for optimal LQR applied to tracking control of 3rd order magnetic levitation system

Archives of Electrical Engineering, 2016
This paper presents an analytical approach for solving the weighting matrices selection problem of a linear quadratic regulator (LQR) for the trajectory tracking application of a magnetic levitation system.
Kumare Vinodh, Jerome Jovitha
doaj   +1 more source

A hidden Markov model and reinforcement learning‐based strategy for fault‐tolerant control

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study introduces a data‐driven control strategy integrating hidden Markov models (HMM) and reinforcement learning (RL) to achieve resilient, fault‐tolerant operation against persistent disturbances in nonlinear chemical processes. Called hidden Markov model and reinforcement learning (HMMRL), this strategy is evaluated in two case studies
Tamera Leitao, Debaprasad Dutta, Simant R. Upreti   +2 more
wiley   +1 more source

Formalization and implementation of logical-probabilistic and logical-algebraic operational models of the functional architecture of cluster computing systems

Известия высших учебных заведений. Поволжский регион:Технические науки
Background. Based on the conducted study of developments in the field of functional architecture of cluster computing systems, the relevance of work in this direction is shown, which is due to the increasing demand for affordable high-performance ...
G.V. Petushkov, A.S. Sigov
doaj   +1 more source

Commutative Chain Rings with Index of Nilpotency 5 and Residue Field ${\mathbb{F}}_{p^m}$

Axioms
This paper gives a thorough characterization of chain rings with index of nilpotency 5 and residue field Fpm, where p represents a prime number, contributing valuable insights to the field of algebraic structures.
Alhanouf Ali Alhomaidhi, Sami Alabiad, Nawal A. Alsarori   +2 more
doaj   +1 more source