The Inclusion / selection approach to discrete event systems with application to layered control

An Integration method over a moving window for exponential convergence in adaptive control without persistency of excitation Yayla, Metehan; Kutay, Ali Türker; Department of Aerospace Engineering (2016) Adaptive control has great capabilities in control of uncertain systems to maintain a consistent and desired performance. Another control methodology concerning the uncertain systems is the robust control. It is well-known that the robust control has advantages of dealing with external disturbances, unmodeled dynamics, and quickly varying uncertain parameters. Nonetheless, robustness against these environmental, and parametric uncertainties degrades the tracking performance. Besides, adaptive control can to...
Novel position measurement and estimation methods for CNC machine systems Kılıç, Ergin; Dölen, Melik; Department of Mechanical Engineering (2007) Precision control of translational motion is vital for many CNC machine tools as the motion of the machinery affects the dimensional tolerance of the manufactured goods. However, the direct measurement along with the accurate motion control of machine usually requires relatively expensive sensors i.e. potentiometers, linear scales, laser interferometers. Hence, this study attempts to develop reference models utilizing low-cost sensors (i.e. rotary encoders) for accurate position estimation. First, an indire...
A Hierarchical Architecture for Nonblocking Control of Discrete Event Systems Schmidt, Klaus Verner; PERK, SEBASTIAN (2006-03-13) This contribution investigates the hierarchical control of decentralized DES which are synchronized by shared events. A multi-level hierarchical control architecture providing hierarchical consistency is introduced. Moreover, it allows for composition of decentralized subsystems on the high-level of the hierarchy, and hence reduces the computational complexity of supervisory control synthesis for language inclusion specifications. In this context, a crucial issue is the nonblocking operation of the overall ...
A Control System Architecture for Control of Non-Affine in Control, Open-Loop Unstable Underactuated Systems Marangoz, Alp; Kutay, Ali Türker (2017-07-25) In this paper, a control system architecture for control of non-affine in control, open-loop unstable underactuated system is discussed. Passivization of the unactuated (internal) system dynamics achieved through perturbation of trajectories of the actuated states, which are calculated through adaptive dynamic inversion technique, based on Tikhonov's theorem. Performance of the controller is shown through simulation of two open-loop unstable and locally uncontrollable example problems.
An Interactive approach to two-response product and process design optimization with statistical inferences Özateş, Melis; Köksal, Gülser; Köksalan, Murat; Department of Industrial Engineering (2015) In this study, an interactive approach has been developed for two-response product and process design optimization problems treating the single response problems as a special case. This approach considers preferences of the decision maker explicitly and the correlation between the responses. It uses a predefined set of objectives that are commonly encountered in the literature and industrial applications. However, instead of presenting all objective values at each iteration, a set of performance measures ar...

Citation Formats

A. Nergis, “The Inclusion / selection approach to discrete event systems with application to layered control,” Ph.D. - Doctoral Program, Middle East Technical University, 1997.