Aktive Dämpfung für hydraulische Servo-Systeme

Translated title of the contribution: Active damping for servohydraulic systems

Andreas Kellner

Research output: ThesisDiploma Thesis

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This diploma thesis presents the implementation of active damping for servohydraulic systems with the example application for a roadheader mining and tunneling machine. At first the basic physical principles of damping are introduced. Then an overview is given of the most important techniques applied in modern hydraulic systems. To establish an algorithm for damping a system, the theory of optimal control was chosen, which offers a very promising approach for the active damping of servohydraulic systems. Two particular methods of the optimal control theory - the Hamiltonian function method and Pontryagin's maximum principle - are explained and then applied using the example of an elementary spring-mass system. The results are compared with the commonly used solution of a speed-proportional friction damper. After this an active damping system based on these methods is developed for the hydraulic system of a roadheader mining and tunneling machine. Finally a discussion of the results is given.
Translated title of the contributionActive damping for servohydraulic systems
Original languageGerman
  • Rath, Gerhard, Co-Supervisor (internal)
  • O'Leary, Paul, Supervisor (internal)
Award date30 Mar 2012
Publication statusPublished - 2012

Bibliographical note

embargoed until null


  • active damping
  • servohydraulic systems
  • Hamiltonian function method
  • Pontryagin's maximum principle

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