Modern control systems are very complex applications that pose special difficulties to systems designers. Design patterns are common in the field of automatic control but in most cases they are restricted to small subfields of application. In this paper we propose a pattern schema with two particular properties: i) it deals with some issues very relevant to control designers and ii) it is gener...

Information transmission is an important part of the wellbore trajectory automatic control system. Combined with the characteristics of the guided drilling system, drilling fluid pulse is selected as a tool for trajectory control. Negative pulse transmission of drilling fluid is one of the key technologies to realize wellbore trajectory automatic control. In this paper, the working principle of...

Safety and security are top concerns in maritime navigation, particularly as maritime traffic continues to grow and as crew sizes are reduced. The Automatic Identification System (AIS) plays a key role in regard to these concerns. This system, whose objective is in part to identify and locate vessels, transmits location-related information from vessels to ground stations that are part of a so-c...

Basic control courses are often attended by students from many different study programs. Many of these students are mainly interested in solving practical problems, whereas the lecturer usually aims at teaching profound knowledge of the analysis and control of dynamical systems. This gap between the application-oriented expectation of the learner and the theoryfocused material chosen by the lec...

This paper is concerned with continuous-time nonlinear risk-sensitive filters. It is shown that for large classes of nonlinearities entering both the dynamics and measurements, these filters are finitedimensional generalizations of the Benes filters. Specific examples are discussed. The small noise limiting analog is discussed using change of probability measures.

Mnesors are defined as elements of a semimodule over the min-plus integers. This two-sorted structure is able to merge graduation properties of vectors and idempotent properties of boolean numbers, which makes it appropriate for hybrid systems. We apply it to the control of an inverted pendulum and design a full logical controller, that is, without the usual algebra of real numbers. "Thus the t...

In this note we observe how, using the same arguments of Liberzon and Hespanha [(2005). Stabilization of nonlinear systems with limited information feedback, IEEE Transactions on Automatic Control, 50, 910–915] , integral input-to-state stabilizability with respect to measurement errors is enough to prove stabilizability of nonlinear systems with limited information. The utility of the remark l...

This paper presents nonlinear small gain theorems for both continuous time systems and discrete time systems in a general setting of input-to-output stability. Most small gain theorems in the past literature were stated for interconnected systems of which the subsystems are either input-to-state stable, or are input-to-output stable and satisfy an additional condition of input/output-to-state s...

this paper presents design and construction of an automatic moldboard profilograph by substituting an optical sensor and a control system together with its evaluation. the modified profilograph is an electro mechanical apparatus in which a micro switch and a dc motor was replaced with an optical sensor and a control system for revolution of a dc motor. thereby, the considered surface is measure...

In this paper, we study the almost sure stability of discretetime jump linear systems with a finite-state Markov-form process. A general condition for almost sure stability, which is a necessary and sufficient condition for (scalar) one-dimensional systems, is derived. Many simpler testable sufficient conditions for almost sure stability are derived from this sufficient condition.