A Markov-like weighted least squares (WLS) estimator is presented herein for harmonic sinusoidal parameter estimation. The estimator involves two distinct steps whereby it first obtains a set of initial parameter esti...
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We investigate herein the problem of amplitude estimation of sinusoidal signals from observations corrupted by colored noise. A relatively large number of amplitude estimators are described which encompass Least Squar...
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Describes a graduate student laboratory experiment called "MARTS" (multivariable apparatus for real time control studies), which has been in use at the systemscontrol Group, University of Toronto since 1985...
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ISBN:
(纸本)0780352513
Describes a graduate student laboratory experiment called "MARTS" (multivariable apparatus for real time control studies), which has been in use at the systemscontrol Group, University of Toronto since 1985. The laboratory experiment is unique in that it uses industrial commercial process control sensors/actuators for its hardware, and thus when problems arise in controller implementation on MARTS, students cannot invoke the usual excuse that inadequate or faulty university sensor/actuator equipment is to blame. The paper describes the experimental apparatus, the control problem specifications to be carried out on the apparatus, mathematical modelling of the system, typical control experiments which have been carried out on the system using both conventional and unconventional controllers, and features which make the control laboratory experiment challenging.
The focus of the paper is directed towards the control of decentralized continuous systems using generalized sampled-data hold functions (GSHF). A digital control law together with a GSHF forms a time-varying controll...
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The focus of the paper is directed towards the control of decentralized continuous systems using generalized sampled-data hold functions (GSHF). A digital control law together with a GSHF forms a time-varying controller which can potentially outperform a digital controller with a simple zero-order hold. A class of decentralized continuous systems for which a GSHF controller can improve the performance of the resultant closed loop system is characterized.
Concerns decentralized adaptive switching control of decentralized LTI systems, using a family of controllers approach. Our objective is to design a high performance controller for a decentralized system, when the unc...
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Concerns decentralized adaptive switching control of decentralized LTI systems, using a family of controllers approach. Our objective is to design a high performance controller for a decentralized system, when the uncertainty in the plant model is sufficiently large so that a fixed decentralized controller is ineffective. It will be assumed that a set of previously designed high performance decentralized controllers is available for each input-output agent, and that the decentralized switching controller may "switch" from this set.
This paper describes the results of the working group investigating the issues of empirical studies for evolving systems. The groups found that there were many issues that were central to successful evolution and this...
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This paper describes the results of the working group investigating the issues of empirical studies for evolving systems. The groups found that there were many issues that were central to successful evolution and this concluded that this is a very important area within software engineering. Finally nine main areas were selected for consideration. For each of these areas the central issues were identified as well as success factors. In some cases success stories were also described and the critical factors accounting for the success analyzed. In some cases it was later found that a number of areas were so tightly coupled that it was important to discuss them together.
This paper develops the basis of a so-called 2D Lyapunov equation based approach to the stability analysis of discrete linear repetitive processes. The key feature of this equation is that, in contrast to the so-calle...
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Repetitive, or multipass, processes are a class of 2D systems of both practical and algorithmic/theoretical interest whose dynamics cannot be analysed or controlled using standard (1D) systems theory. Recently it has ...
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The emergence of intelligent control has seen a focus of attention on the ideas of learning control. This paper explores the relationship between the performance of learning algorithms and the structure of the system ...
The emergence of intelligent control has seen a focus of attention on the ideas of learning control. This paper explores the relationship between the performance of learning algorithms and the structure of the system to be controlled. The importance of system's relative degree (pole-zero excess) and the system's zeros are described and the role of prediction in improving performance is demonstrated using ideas from iterative learning control.
Provides insight into the design of controlled mechanical systems. Most conventional mechanical designs are based on requirements involving weights, stiffness, strength, and so forth. Which are not directly related to...
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Provides insight into the design of controlled mechanical systems. Most conventional mechanical designs are based on requirements involving weights, stiffness, strength, and so forth. Which are not directly related to controlled performance. The objective of the paper is to identify mechanical (structural) properties that are critical for guaranteeing good controlled performance. In particular, we point out that the control bandwidth of a servo-tracking system achievable by a dynamic output feedback controller with reasonable amount of control effort, is closely related to the frequency range where the open-loop transfer function exhibits positive-realness. A finite frequency positive-real property is characterized in terms of linear matrix inequalities and structure design methods are proposed using the characterization.
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