Download Control Reconfiguration of Dynamical Systems: Linear by Thomas Steffen PDF

By Thomas Steffen

ISBN-10: 3540257306

ISBN-13: 9783540257301

Reconfiguration, an strategy for fault-tolerant keep an eye on, consists of altering the keep watch over constitution according to the fault. This monograph extends this concept to actuator faults and reports intimately the so-called digital actuator technique. "Control Reconfiguration of Dynamical platforms" additionally introduces structural research as a device for reconfiguration. simply because a fault adjustments the constitution of the method, the reconfiguration answer is sought on a structural point. Novel algorithms are awarded to check for reconfigurability and to discover a reconfiguration answer. A MATLAB toolbox is equipped, which incorporates the most algorithms and examples. The publication addresses complex engineering scholars, builders and researchers that experience a particular curiosity up to speed reconfiguration.

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Extra resources for Control Reconfiguration of Dynamical Systems: Linear Approaches and Structural Tests

Example text

The reconfiguration problem for the 2-Tank system can be defined using the reconfiguration goals defined in Sect. 5. 1) is obviously necessary for a successful reconfiguration, since an unstable loop would imply that a tank becomes empty or flows over in the long run. The objective of the system also includes a “reasonably short” settling time. This is a specialisation of the stabilisation goal, because the system is not only required to converge, but to do so reasonably fast. It requires that all states of the plant be controlled, since the open-loop behaviour is not fast enough.

5 . 2c) y=x z = x2 . 25. 3 Controller For normal operation, two proportional controllers are used. The first controls the level x1 of the left tank using the pump u1 . The second controller uses the connection valve u2 to control the level x2 of the right tank. 3) 0 10 where w= w1 w2 is the reference input for the levels of the two tanks. The control structure is shown in Fig. 2. 74 0 y=x z = x2 . 75. 2. 4 Faults Three faults are considered: 1. 4a) 2. 4b) 3. loss of sensor y1 (sensor data not available, fill with 0 instead): y1 = 0 = x1 .

Only the minimal number of signals is used, and the definition is kept strictly within the theory of continuous (linear or nonlinear) time-invariant systems. On the other hand, as few assumptions as possible are made during the problem formulation, so as to keep it as general as possible. The chapter starts with a definition of the system to reconfigure. The behaviour both before and after the occurrence of the fault is considered. The separation of the system into plant and controller is introduced, followed by the concept of the reconfiguration block.

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Control Reconfiguration of Dynamical Systems: Linear Approaches and Structural Tests by Thomas Steffen


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