Institute for Fluid Power Drives and Controls IFAS of RWTH Aachen University

Transcription

1 Innovation in Fluid Power Institute for Fluid Power Drives and Controls IFAS of RWTH Aachen University

2 RWTH Aachen University Facts and Figures Established in faculties, 260 institutes (55 in mech. engineering) employees (539 professors) students ( in mech. engineering) Budget: 868,7 Mio.

3 Institute for Fluid Power Drives and Controls Testing facilities of 1300 m² including: - More than 50 test rigs for hydraulic and pneumatic components - 6 machine beds on isolated foundation - 5 isolated test chambers with machine beds - Anechoic room on isolated foundation, m², 90/200 kw with energy recovery - Climatic test chamber measuring m³, -70 C to +70 C, - Test rigs for ageing of hydraulic fluids and components 21 scientific staff members working in various fields of fluid power applications Qualification of young post graduate engineers, students and apprentices Competence in simulation and special test equipment for hydrostatic machines Englisch

4 Institute for Fluid Power Drives and Controls Technology Transfer Lectures and courses - Fundamentals of Fluid Power - Servohydraulics - Fluid power technology for mobile application - Simulation of Fluid Power Systems - Lubricants and pressure media - Design of fluid power machines and components Conferences - Industrial conferences - International conference on Fluid Power

5 11. IFK International Fluid Power Conference Biggest expert conference in the field of hydraulic & pneumatic drive and control technology international participants - Colloquium for users, manufacturers & scientists - Exchange between industry & university 2-year conference cycle - IFAS/ RWTH Aachen & IFD/ TU Dresden

6 Personnel Englisch

7 Budget Englisch

8 References Englisch

9 Research Groups Englisch

10 Tribology and Fluid Analysis Julian Angerhausen Ximena Ayala Felix Fischer Nicolai Otto Philipp Weishaar Group leader Tobias Mielke Tel.: 0241/

11 Tribology and Fluid Analysis General approach Fluid properties Tribologic properties of fuels Fluid influence on component and system efficiency Electrostatic charging of fluids Equipment Sealing technology - Surface measurement (3D-Microscope, Micro hardness, etc.) - Oil laboratory Employed software - ABAQUS, ANSYS, FIRST, etc. - Tribosimulation tools developed in-house

12 Tribology and Fluid Analysis General approach Fluid properties Tribologic properties of fuels Capillary viscometer Viscosity, acid number, water content, particle content, pourpoint, foaming characteristics High pressure falling body viscometer Fluid influence on component and system efficiency Electrostatic charging of fluids Sealing technology Saturation curve identification Diffusion coefficient determination in micro channel

13 Tribology and Fluid Analysis General approach Rheology Lubricity Fluid properties Tribological properties of fuels Micro gap test bench HFRR SLBOCLE Fluid influence on component and system efficiency Electrostatic charging of fluids Sealing technology Pressure Disc-on-disc tribometer Temperature

14 Tribology and Fluid Analysis General approach Fluid properties Fluid influence on displacement machine efficiency Tribological properties of fuels Fluid influence on component and system efficiency Electrostatic charging of fluids Sealing technology Fluid influence on system efficiency

15 Tribology and Fluid Analysis General approach Fluid properties Cooler Tribological properties of fuels Fluid influence on component and system efficiency Reservoir Pumps Electrostatic charging of fluids Sealing technology Test specimen Non conductive hoses Charge measuring cell

16 Tribology and Fluid Analysis General approach Fluid properties Tribological properties of fuels Fluid influence on component and system efficiency Simulation: Transient friction and leakage behavior Water entrainment via seals Phase border AP1.2: Phasengrenze m W m W sealing contact AP 1.3: Dichtkontakt Electrostatic charging of fluids Sealing technology Friction measurement at high relative velocity Ungelöstes Wasser Öl mit gelöstem Wasser AP 1.1: Hydrauliköl Hydraulic fluid

17 Pump and Motor Technology Markus Gärtner Tobias Pietrzyk Florian Schoemacker Seong-Ryeol Lee Group leader Stephan Wegner Tel.: /

18 Druck [bar] Fläche [mm²] Volumen [mm³] Pump and Motor Technology Optimization of hydrostatic machines Problem Simulation Measurements Druckverläufe bei n=2000 min-1, Kennfeld: boc0118f Fundamental investigations using simulation tools Druck HD2 95 Druck HD Zellendruck 85 ND 65 HD1 80 A HD V Zelle Druckschwankungsamplitude HD1: 2.15 bar Druckschwankungsamplitude HD2: bar Drehwinkel Außenrad [ ] Maximaler Zellendruck: bar Specialized measurement equipment for hydraulic machines Optimized hydraulic components Acoustic analysis Further fields of research Equipment: - Test facilities for component tests of hydraulic pumps - Measurement technology designed for hydraulic applications - Acoustic chamber Employed software - Ansys FEM / CFD, DSHplus, PumpLinx, etc. - Simulation tools developed in-house

19 Pump and Motor Technology Optimization of hydrostatic machines CFD-Simulation Fundamental investigations using simulation tools Lubrication film simulation of the cylinder/valve plate contact Specialized measurement equipment for hydraulic machines Acoustic analysis & piston/bushing contact Further fields of research 1D-system-simulation of hydraulic displacement machines

20 Pump and Motor Technology Optimization of hydrostatic machines Efficiency measurement (e.g. with undissolved air) Fundamental investigations using simulation tools Specialized measurement equipment for hydraulic machines Low speed motor friction measurement Acoustic analysis Further fields of research Friction, temperature, gap & leakage measurement of tribological contacts

21 Pump and Motor Technology Optimization of hydrostatic machines Microfones Measurement in acoustic chamber Fundamental investigations using simulation tools Test specimen Reflect. planes Specialized measurement equipment for hydraulic machines Acoustic analysis of hydraulic displacement machines and power units Acoustic simulation Acoustic analysis Further fields of research Pulsation simulation and measurements using reflectionless line termination

22 Pump and Motor Technology Optimization of hydrostatic machines Lubrication film simulation and gap height measurement of the cylinder/valve plate contact Fundamental investigations using simulation tools Simulation Measurement Specialized measurement equipment for hydraulic machines RAC New development of a radial piston unit Acoustic analysis Further fields of research Loss simulation of pumps and pump controllers P Regler P Förder

23 Valve Technology and Mechatronics Patrik Bordovsky Rahelehsadat Mostafavi Marcel Rückert Group leader Dominic Dießel Tel.: /

24 Valve Technology and Mechatronics Main research fields New development Solenoid simulation & opening time meas. 1-D simulations Geometry Actuation Control Short-time ageing test for hydraulic valves Valve Technology and Mechatronics Flow forces in hydraulic valves Flat slide valve with ceramic components Fluid Resistance Flow forces CFD-Simulation & measurement Cavitation modelling in valves Equipment: - Valve test rig - Ageing test rig Employed software - Ansys CFD, ICEM CFD, openfoam, Flux 3D, DSHplus, Matlab

25 Valve Technology and Mechatronics Main research fields Desintegration after <1day Short-time ageing test for hydraulic valves Flow forces in hydraulic valves Flat slide valve with ceramic components Cavitation modelling in valves

26 Valve Technology and Mechatronics Main research fields F Str = f P 1 P n Short-time ageing test for hydraulic valves Flow forces in hydraulic valves Flat slide valve with ceramic components ρl Q 1 t ρ 2Q 2 v 2 cos ε 2 ρ 1 Q 1 v 1 cos ε 1 + A s p 2 p 1 F Str = 2 α D 2 π Dx 1 p cot ε 1 + x 1 x 2 cot ε 2 = F Str Cavitation modelling in valves

27 CFD & FEM Valve Technology and Mechatronics Main research field A B Short-time ageing test for hydraulic valves P T Flow forces in hydraulic valves T B P A T Flat slide valve with ceramic components Cavitation modelling in valves Pressure compensation Low-grade leakage Low- wear Corrosion-resistant Ceramic pre-product

28 Valve Technology and Mechatronics Main research field Short-time ageing test for hydraulic valves Simulation of air bubble release in hydraulic reservoirs Meas. Flow forces in hydraulic valves d(m) Flat slide valve with ceramic components Simulation of gas and vapor cavitation in valves including LES turbulence modeling Cavitation modelling in valves

29 System and Control Technology Raphael Alt Gunnar Matthiesen Matthias Petry Seiji Hijikata Ken Sugimura Group leader Roland Leifeld Tel.: /

30 System and Control Technology General approach Development, analysis & optimization of systems Efficient & compact systems SEHB STEAM Regenerative energy Industrial Internet of Things (IIoT)

31 System and Control Technology General approach Development, analysis & optimization of systems 1 MW wind energy transmission with virtual rotor Rotor aerodynamics in real time simulation Analysis of switching operations & efficiencies generator 1 generator 2 Efficient & compact systems SEHB STEAM Regenerative energy Industrial Internet of Things (IIoT) Component measurement 350 knm at 250 bar Q max l/min Stationary / dynamic Real time simulation of different drives

32 System and Control Technology General approach Development, analysis & optimization of systems Efficient & compact systems SEHB STEAM Self energizing electro-hydraulic brake System design Development & optimization of advanced control strategies Brake torque oscillation compensation Validation of simulation results on the test rig Function integration in cable car Regenerative energy Industrial Internet of Things (IIoT)

33 System and Control Technology General approach Development, analysis & optimization of systems LS-System STEAM Hydraulic hybrid system for excavators Holistic system approach Simulation & validation Efficient & compact systems SEHB STEAM STEAM Regenerative energy LS-System (1800 min -1 ) Industrial Internet of Things (IIoT) ICE STEAM (1200 min -1 )

34 System and Control Technology General approach Optimization of the hydrostatic power transfer in wave energy applications Development, analysis & optimization of systems Efficient & compact systems SEHB STEAM Regenerative energy Industrial Internet of Things (IIoT)

35 System and Control Technology General approach Development, analysis & optimization of systems Efficient & compact systems SEHB STEAM Industrial Internet of Things Cyber Physical Systems Condition Monitoring Predictive Maintenance Demands towards Fluid Power technology Regenerative energy Master display Error Industrial Internet of Things (IIoT) Diagnositics Control Actuator Valve spool Drive Other devices Measurement data

36 Automation and Pneumatics Fabian Guse Filipp Kratschun Stephan Merkelbach Chong Liu Group leader Maximilian Waerder Tel.: /

37 Automation and Pneumatics Main research fields Automatition & handling Servo pneumatic Aachen-IFAS-Hand Flow control & process technology Simulation Entwicklung Optimierung Medical systems & health care Efficiency improvement & exergy consideration Robotics Vacuum technology Acoustic analysis Gas dynamics simulation Equipment: - Pneumatic laboratory - Pneumatic pressure supply (6 bar & 16 bar ) - Flow measurement test rig Employed software - Ansys CFD, DSHplus, Matlab/Simulink

38 Automation and Pneumatics Main research fields Servo pneumatic Aachen-IFAS-Hand Application Efficiency improvement & exergy consideration Acoustic analysis Electro magnetic commutation Function synthesis Gas dynamics simulation Validation Solenoid simulation

39 Automation and Pneumatics Main research fields E = m c p T T U T U R ln p p U c p ln T T U Servo pneumatic Aachen-IFAS-Hand Energy efficiency of pneumatic pressure transformers Efficiency improvement & exergy consideration Transfer of hydraulic concepts p m p m Acoustic analysis Gas dynamics simulation Design Development Efficiency improvement by use of exhaust air Validation Assessment η E

40 Automation and Pneumatics Main research fields L ex,8h = 80 db(a) L pc,max = 135 db(c) Servo pneumatic Aachen-IFAS-Hand Simulation Measurement Efficiency improvement & exergy consideration Acoustic analysis Gas dynamics simulation

41 Automation and Pneumatics Main research fields Transient CFD-Simulation Boundary values Servo pneumatic Aachen-IFAS-Hand p(t),t(t) f = 20 khz Auswertung der CFD-Simulation Simulated mass flow =? Efficiency improvement & exergy consideration Pressure via sensor Analysis of pressure singal Modeled mass flow Acoustic analysis Gas dynamics simulation

42 Society for the Advancement of Fluid Power Technology Inc. CEO Christian Schleihs Tel.: /

43 Society for the Advancement of Fluid Power Technology Inc. Technology transfer (e.g. organization of conferences) Promotion of students (e.g. study trips to companies) Promotion of research (e.g. purchase of equipment) Technical literature 275 members (41 company members)

44 Society for the Advancement of Fluid Power Technology Inc. Technology transfer (e.g. organization of conferences) Promotion of students (e.g. study trips to companies) Promotion of research (e.g. purchase of equipment) Technical literature 275 members (41 company members)

45 Society for the Advancement of Fluid Power Technology Inc. Technology transfer (e.g. organization of conferences) Promotion of students (e.g. study trips to companies) Promotion of research (e.g. purchase of equipment) Technical literature 275 members (41 company members)

46 Society for the Advancement of Fluid Power Technology Inc. Technology transfer (e.g. organization of conferences) Promotion of students (e.g. study trips to companies) Promotion of research (e.g. purchase of equipment) Technical literature 275 members (41 company members)

47 Vielen Thank Dank you for your attention. für Ihre Aufmerksamkeit Fragen Questions, und Anregungen? Suggestions?