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Linear Reconfiguration Problem
In this chapter, the general reconfiguration problem is specialised by applying it to linear systems. The advantage is that the problem can be broken...
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Structural Solutions to Disturbance Decoupling
This chapter develops a novel algorithm which solves the disturbance decoupling problem by repeatedly decoupling one output variable at a time. The...
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Literature Overview
This chapter introduces the main literature relevant for the field of reconfi-guration. During the last decade, different communities have dealt with...
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Reconfiguration Using a Virtual Actuator
This chapter develops the concept of a virtual actuator. The idea of a virtual actuator is to use the input signal meant for the nominal process and...
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Basic Structural Properties
It is possible to attribute properties to a system structure. These properties are called structural properties, and they hold for almost all systems...
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Conclusion
This chapter mentions the main results of the manuscript. The motivation was to find methods for autonomous control reconfiguration after faults....
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Reconfiguration of a Helicopter Model
A two-degrees-of-freedom helicopter experiment (see Fig. 17.1) is used as a more complex reconfiguration example. As demonstrated by Lunze et al....
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Reconfiguration of the 3-Tank System
The 3-Tank experiment is shown in Fig. 16.1. It consists of three tanks, which are connected via the valves u2, u3 and u4. Pumps can bring water into...
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Introduction to Control Reconfiguration
Controlled technological systems are used in many fields. They provide essential services such as the regulation of water pressure, the control of...
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General Reconfiguration Problem
In this chapter, a formal definition of the reconfiguration problem is developed. While the general idea of reconfiguration may appear obvious, there...
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Solvability of Disturbance Decoupling
The strong reconfiguration problem leads to a disturbance decoupling problem as stated in Sect. 10.4. There are known structural tests for the...
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Reconfiguration Using a Virtual Sensor
This chapter develops the concept of a virtual sensor: when a sensor is at fault, an observer is used to calculate a replacement value. This approach...
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Structural Models
The goal of structural modelling is to define all signal paths in a system.1 So for every possible signal path, the structural model has to determine...
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Direct Reconfiguration Using a Static Block
This chapter employs a static reconfiguration block in order to solve the direct reconfiguration problem. It is shown that this approach gives...
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Running Example: the 2-Tank System
A simple system will be used as a running example throughout the manuscript. It serves to illustrate typical faults and the resulting reconfiguration...
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Reconfiguration by Disturbance Decoupling
This chapter addresses the strong reconfiguration goal for plants after actuator faults. The objective is to find a reconfigured block that makes the...
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A Structural Reconfiguration Algorithm for Actuator Faults
This chapter summarises the results from the previous three chapters, and shows how they can be used to analyse and solve the reconfiguration...
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Reconfiguration with Set-Point Tracking
This chapter treats the weak reconfiguration problem: the output equilibrium of the plant (for the same input) has to be restored (see Sect. 5.3 for...
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Technical Reliability and Product Emergence Process
Technical reliability is a characteristic of a product or a process. The analysis of technical reliability takes place in various phases of the...
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Elementary Terms
This chapter outlines the basic terms and concepts of technical reliability and the associated disciplines as a basis for understanding the following...