Helmut Kogler, Karl Ladner, Peter Ladner,
"Flatness-Based Control of a Closed-Circuit Hydraulic Press"
: Dynamics and Control of Advanced Structures and Machines, Vol. 156, Springer, Cham, Seite(n) 111-121, 2022, ISBN: 978-3-030-79324-1
Flatness-Based Control of a Closed-Circuit Hydraulic Press
Sprache des Titels:
Dynamics and Control of Advanced Structures and Machines
Hydraulic drive technology is well known for its high force density and, hence, basically qualified for press applications. While systems with constant pressure supply suffer from a bad energy efficiency due to resistance control and, furthermore, an inferior controllability in particular at fast movement operation, the presented hydraulic press concept overcomes these drawbacks by using a synchronized cylinder in a closed circuit displacement control for rapid movement and in press mode. In this paper, a flatness-based control of the position of the main press actuator is presented. The derivation of the controller design is followed by simulation experiments and, furthermore, by a discussion of measurements on a two-axis prototype with a load capacity of 50 tons.