Abstract
Fluid power systems contain hose lines for various reasons like
the connection between moving components or the isolation of
structure-borne noise. For dynamic system analysis and simulation
purposesthese hose lines need to be modeled mathematically.
While there are good models for the computationally efficient simulation
of wave propagation in transmission lines available in the
literature, the parameterisation of these models typically needs
measurement data from individual types of hoses. This measurement
data can either be collected by in-situ methods trying to
take off the necessary signals from a hose assembled into a fluid
power system, or it may be acquired on a dedicated test rig. Such
test rigs typically need auxiliary functions for holding a mean
pressure and flushing the device under test with a low mean flow
rate to take heat and entrained air away. These auxiliary circuits
typically result in low frequency errors in the measurement data.
This paper reports about a method for correcting low frequency
errors due to leakages associated with the necessary pressurisation
and flushing circuit in a typical hydro-pulse test rig. The
measurements provided in the paper are for a fluid power hose
with a diameter of 20 mm and a length of 3 m.
the connection between moving components or the isolation of
structure-borne noise. For dynamic system analysis and simulation
purposesthese hose lines need to be modeled mathematically.
While there are good models for the computationally efficient simulation
of wave propagation in transmission lines available in the
literature, the parameterisation of these models typically needs
measurement data from individual types of hoses. This measurement
data can either be collected by in-situ methods trying to
take off the necessary signals from a hose assembled into a fluid
power system, or it may be acquired on a dedicated test rig. Such
test rigs typically need auxiliary functions for holding a mean
pressure and flushing the device under test with a low mean flow
rate to take heat and entrained air away. These auxiliary circuits
typically result in low frequency errors in the measurement data.
This paper reports about a method for correcting low frequency
errors due to leakages associated with the necessary pressurisation
and flushing circuit in a typical hydro-pulse test rig. The
measurements provided in the paper are for a fluid power hose
with a diameter of 20 mm and a length of 3 m.
| Translated title of the contribution | A LOW FREQUENCY CORRECTION METHOD FOR FLEXIBLE HOSE TEST RIGS |
|---|---|
| Original language | English |
| Title of host publication | Proceedings of the ASME 2025 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
| Subtitle of host publication | 38th Fluid Power and Motion Control Symposium (FPMC) |
| Number of pages | 8 |
| Edition | 1 |
| ISBN (Electronic) | 9780791889268 |
| DOIs | |
| Publication status | Published - 27 Oct 2025 |
Publication series
| Name | Proceedings of the ASME Design Engineering Technical Conference |
|---|---|
| Volume | 6 |
Fields of science
- 203 Mechanical Engineering
- 203015 Mechatronics
JKU Focus areas
- Sustainable Development: Responsible Technologies and Management