Project Details
Projekt
Development of a real-time actuator and sensor network
Applicant
Professor Dr. Stefan van Waasen
Subject Area
Microsystems
Term
from 2011 to 2020
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 202175528
During the first funding period, we focused on the development of a real-time network of distributed actuators and sensors as well as on the instrumentation of the wind tunnel experiments. This included the development of actuating systems for different ranges in amplitude, force, and frequency. For amplitudes up to 45 µm, a system of piezoelectric actuators has been designed. For amplitudes up to 1 mm two electromagnetic actuating systems were developed. The first system is based on commercially available voice coils and was successfully used for the actuation of a PVC foil. For the actuation of aluminum surfaces with and without riblet structure up to a sheet thickness of 0.4mm, a special electromagnetic actuating system based on aircoils has been developed.The topology and the protocol of the real-time actuator and sensor network is based on the standard IEEE1451.0 ('Smart Transducer Standard'). In a first step, a network model was developed using MATLAB / SIMULINK and the TrueTime toolbox. The selected network parameters have been verified using a network testbed based on Raspberry Pi computer modules. Special interfaces ensure that the model can be used to drive the wind tunnel experiments ('model in the loop ') and enable coupling with the central control (subproject 3).In the second funding period the focus will be extended from steady to unsteady inflow conditions and therefore subproject 4 will concentrate on the following tasks:(i) Enhancement of the real time actuator and sensor network to enable flow control in unsteady conditions, i.e., change of inflow velocity of the plate in the wind tunnel. For this purpose, the time constant of the amplitude control must be reduced (~ 0.5 s) within the cascaded control loop.(ii) Development of the electromagnetic actuating system with the objective to actuate aluminum sheets of up to 1 mm thickness in a larger amplitude range (25 µm to 1.0 mm) at higher accuracy (~ 5 µm). (iii) In terms of the desired energy savings by active drag reduction, model-based concepts for energy optimization of the actuation and the real - time actuator and sensor network shall be developed.
DFG Programme
Research Units
Major Instrumentation
4 x Elektromagnetische Aktuatorsysteme mit Zubehör
Co-Investigator
Dr. Michael Schiek
