Optimal Sequence-Based Control of Networked Linear Systems

Optimal Sequence-Based Control of Networked Linear Systems
Author: Fischer, Joerg
Publisher: KIT Scientific Publishing
Total Pages: 184
Release: 2015-01-12
Genre: Electronic computers. Computer science
ISBN: 3731503050

In Networked Control Systems (NCS), components of a control loop are connected by data networks that may introduce time-varying delays and packet losses into the system, which can severly degrade control performance. Hence, this book presents the newly developed S-LQG (Sequence-Based Linear Quadratic Gaussian) controller that combines the sequence-based control method with the well-known LQG approach to stochastic optimal control in order to compensate for the network-induced effects.

Control Theory of Digitally Networked Dynamic Systems

Control Theory of Digitally Networked Dynamic Systems
Author: Jan Lunze
Publisher: Springer Science & Business Media
Total Pages: 405
Release: 2013-07-06
Genre: Technology & Engineering
ISBN: 3319011316

The book gives an introduction to networked control systems and describes new modeling paradigms, analysis methods for event-driven, digitally networked systems, and design methods for distributed estimation and control. Networked model predictive control is developed as a means to tolerate time delays and packet loss brought about by the communication network. In event-based control the traditional periodic sampling is replaced by state-dependent triggering schemes. Novel methods for multi-agent systems ensure complete or clustered synchrony of agents with identical or with individual dynamics. The book includes numerous references to the most recent literature. Many methods are illustrated by numerical examples or experimental results.

Model-Based Control of Networked Systems

Model-Based Control of Networked Systems
Author: Eloy Garcia
Publisher: Springer
Total Pages: 387
Release: 2014-08-08
Genre: Science
ISBN: 3319078038

This monograph introduces a class of networked control systems (NCS) called model-based networked control systems (MB-NCS) and presents various architectures and control strategies designed to improve the performance of NCS. The overall performance of NCS considers the appropriate use of network resources, particularly network bandwidth, in conjunction with the desired response of the system being controlled. The book begins with a detailed description of the basic MB-NCS architecture that provides stability conditions in terms of state feedback updates. It also covers typical problems in NCS such as network delays, network scheduling, and data quantization, as well as more general control problems such as output feedback control, nonlinear systems stabilization, and tracking control. Key features and topics include: Time-triggered and event-triggered feedback updates Stabilization of uncertain systems subject to time delays, quantization, and extended absence of feedback Optimal control analysis and design of model-based networked systems Parameter identification and adaptive stabilization of systems controlled over networks The MB-NCS approach to decentralized control of distributed systems Model-Based Control of Networked Systems will appeal to researchers, practitioners, and graduate students interested in the control of networked systems, distributed systems, and systems with limited feedback.

Linear Estimation in Interconnected Sensor Systems with Information Constraints

Linear Estimation in Interconnected Sensor Systems with Information Constraints
Author: Reinhardt, Marc
Publisher: KIT Scientific Publishing
Total Pages: 262
Release: 2015-04-15
Genre: Mathematics
ISBN: 3731503425

A ubiquitous challenge in many technical applications is to estimate an unknown state by means of data that stems from several, often heterogeneous sensor sources. In this book, information is interpreted stochastically, and techniques for the distributed processing of data are derived that minimize the error of estimates about the unknown state. Methods for the reconstruction of dependencies are proposed and novel approaches for the distributed processing of noisy data are developed.

Tracking Extended Objects in Noisy Point Clouds with Application in Telepresence Systems

Tracking Extended Objects in Noisy Point Clouds with Application in Telepresence Systems
Author: Faion, Florian
Publisher: KIT Scientific Publishing
Total Pages: 229
Release: 2016-09-13
Genre: Technology (General)
ISBN: 3731505177

We discuss theory and application of extended object tracking. This task is challenging as sensor noise prevents a correct association of the measurements to their sources on the object, the shape itself might be unknown a priori, and due to occlusion effects, only parts of the object are visible at a given time. We propose an approach to track the parameters of arbitrary objects, which provides new solutions to the above challenges, and marks a significant advance to the state of the art.

Directional Estimation for Robotic Beating Heart Surgery

Directional Estimation for Robotic Beating Heart Surgery
Author: Kurz, Gerhard
Publisher: KIT Scientific Publishing
Total Pages: 272
Release: 2015-05-26
Genre: Electronic computers. Computer science
ISBN: 3731503824

In robotic beating heart surgery, a remote-controlled robot can be used to carry out the operation while automatically canceling out the heart motion. The surgeon controlling the robot is shown a stabilized view of the heart. First, we consider the use of directional statistics for estimation of the phase of the heartbeat. Second, we deal with reconstruction of a moving and deformable surface. Third, we address the question of obtaining a stabilized image of the heart.

Deterministic Sampling for Nonlinear Dynamic State Estimation

Deterministic Sampling for Nonlinear Dynamic State Estimation
Author: Gilitschenski, Igor
Publisher: KIT Scientific Publishing
Total Pages: 198
Release: 2016-04-19
Genre: Electronic computers. Computer science
ISBN: 3731504731

The goal of this work is improving existing and suggesting novel filtering algorithms for nonlinear dynamic state estimation. Nonlinearity is considered in two ways: First, propagation is improved by proposing novel methods for approximating continuous probability distributions by discrete distributions defined on the same continuous domain. Second, nonlinear underlying domains are considered by proposing novel filters that inherently take the underlying geometry of these domains into account.

Tracking Extended Objects with Active Models and Negative Measurements

Tracking Extended Objects with Active Models and Negative Measurements
Author: Zea Cobo, Antonio Kleber
Publisher: KIT Scientific Publishing
Total Pages: 212
Release: 2019-04-09
Genre: Electronic computers. Computer science
ISBN: 373150877X

Extended object tracking deals with estimating the shape and pose of an object based on noisy point measurements. This task is not straightforward, as we may be faced with scarce low-quality measurements, little a priori information, or we may be unable to observe the entire target. This work aims to address these challenges by incorporating ideas from active contours and exploiting information from negative measurements, which tell us where the target cannot be.

Intraoperative Planning and Execution of Arbitrary Orthopedic Interventions Using Handheld Robotics and Augmented Reality

Intraoperative Planning and Execution of Arbitrary Orthopedic Interventions Using Handheld Robotics and Augmented Reality
Author: Klemm, Martin
Publisher: KIT Scientific Publishing
Total Pages: 242
Release: 2018-11-23
Genre: Augmented reality
ISBN: 3731508001

The focus of this work is a generic, intraoperative and image-free planning and execution application for arbitrary orthopedic interventions using a novel handheld robotic device and optical see-through glasses (AR). This medical CAD application enables the surgeon to intraoperatively plan the intervention directly on the patient's bone. The glasses and all the other instruments are accurately calibrated using new techniques. Several interventions show the effectiveness of this approach.