“…From an application point of view, while the EDFs have been utilized mostly for propelling a craft, their ability to generate a negative pressure and actively adhere to a surface, George Andrikopoulos geoand@ltu.se George Nikolakopoulos geonik@ltu.se 1 Control Engineering Group, Luleå University of Technology, SE-97187 Luleå, Sweden when their ducted structure is placed at a close proximity [3,4], has led to different application areas, with the most recent being the Wall-Climbing Robots (WCRs) [5]. Although the WCRs presented in the related literature have been utilizing a number of different methods for adhesion, from passive [6,7] and active suction cups [8,9] to vortex chambers [3,10] magnetic attraction [11,12] and oscillated propulsion [13,14] the use of an EDF-based design as an adhesion method, provides important advantages that could increase the potential usability of WCRs, advantages that have not been addressed yet at full extent.…”