• Uwe Mackenroth


Suppose a physical system G with two inputs and two outputs is given. In the context of control systems, G is denoted as the plant. One of the inputs, the control u, can be prescribed, whereas the other, the disturbance d, is assumed to be unknown. Further, we suppose that one of the outputs, the variable y, can be measured (therefore y is denoted as a measurement). For the other output, the variable to be controlled z, a certain behavior is desired. In order to achieve this, a device called a controller is needed. The controller K has the measurement y and a reference signal r as inputs. The reference signal specifies the desired behavior of z . The output of the controller is the control u. The configuration of the described system is depicted in Fig. 1.1. Such a system is denoted as a feedback system.


Controller Design Feedback System Robust Stability Distillation Column Optimal Controller 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Uwe Mackenroth
    • 1
  1. 1.FB Maschinenbau und WirtschaftsingenieurwesenFachhochschule Lübeck University of Applied SciencesLübeckGermany

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