Actuator 2016

Every two years there is the Actuator Conference in Bremen. The main topic of the conference are small actuators for all kinds of application – and of course also for haptic applications.

For haptics, several actuators based on polymeric materials were shown. Electrostatic Actuators based on thin silicone films are known for some time [1], but several papers about improved manufacturing [2], modeling and optimizations [3], especially for higher loads, were presented.

A somehow trending top

Example for an MRE actuator from
Example for an MRE actuator from [4]
ic were magneto-rheological polymer materials. These materials consist of magnetizable particles in an elastomer matrix. They work similar to magneto-rheological fluids, but without the mess and with a base elasticity, that is useful for many applications such as joysticks [4] or knobs [5].

Maxon presented a new haptic device, that uses two MRF clutches to achieve a virtually play-free actuation with high torque capabilities and fast reaction time. This drive seems very interesting for robotics and serial kinematic applications [6].

A couple of intesting applications were also presented. KU Leuween and Haption showed  a comanipulaition system for training of laser surgery  on unborn children [7]. Lithuanian researchers presented a tube-like structure, which pose can be commanded by ERF actuators [8].

Furthermore, two papers drew our attention: A flex-PCB was used by researchers of Université Catholique de Louvain to build up a brushless DC-motor [9]. They increase the filling factor of the motor and find an incrase in power densiy of 28%, which promises smaller actuators. Fraunhofer IPA presented hydraulic actuators for medical applications, which exhibit a high power density and large forces. To overcome leakage, a capacitive sensor is included in the actuator [10].

Despite these mentions, there were a lot of interesting topics in the Actuator Conference (for example a miniature balancing device for high speed rotors by two of our colleagues [11]) that are worth a read.

References

[1] A. Köllnberger, H. F. Schlaak: Elastomers for Dielectric Electroactive Polymer Applications (Review). Proceedings Actuator Conference, Bremen, 2016, p.274

[2] B. von Heckel, H. Bochmann, T. Hoffstadt, J. Maas: Customized Dielectric

Elastomer Stack-Actuators under Consideration of Application Specifications. Proceedings Actuator Conference, Bremen, 2016, p. 278

[3] X. Zhang, A. Verhagen, Q. Zhu, S. Hau, S. Seelecke: Design and Control Strategies for a Novel Actuator System with Dielectric Electroactive Polymer and Spring. Proceedings Actuator Conference, Bremen, 2016, p. 514

[4] J. Bilz, H. Böse, M. Kupnik, C. Hatzfeld: Magneto-Rheological Elastomer Actuators for a Reconfigurable Joystick. Proceedings Actuator Conference, Bremen, 2016, p. 294

[5] H. Böse, W. Hartmann, J. Ehrlich: Haptic Actuators Based on Magnetoactive Polymers. Proceedings Actuator Conference, Bremen, 2016, p. 290

[6] M.E. Busse-Grawitz, R. Pittini, R. Waldvogel, D. Martin: Magnetorheological Actuator for Haptic Applications. Proceedings Actuator Conference, Bremen, 2016, p. 361

[7] C. Gruijthuijsen, A. Javaux, G. Borghesan, T. Vercauteren, D. Stoyanov, S. Ourselin, J. Deprest, J. Perret, D. Reynaerts, E. Vander Poorten: Haptic Guidance in Comanipulated Laser Surgery for Fetal Disorders. Proceedings Actuator Conference, Bremen, 2016, p. 192

[8] R. Bansevicius, A. Drukteiniene, V. Jurenas, G. Kulvietis: New Class of Trunk-Like Robots: Structure, Control, Actuators. Proceedings Actuator Conference, Bremen, 2016, p. 483

[9] F. Baudart, B. Dehez: FlexPCB Windings, the Way Towards Very High Performance Coreless BLDC Motors. Proceedings Actuator Conference, Bremen, 2016, p. 487

[10] L.M. Comella, K. Ayvazov, R. Kessel, T. Cuntz, A. van Poelgeest: Micro-Hydraulic Drives with Integrated Displacement Sensor for Medical Application. Proceedings Actuator Conference, Bremen, 2016, p. 163

[11] D. ActuatorCutPfeffer, F. Klug, H.F. Schlaak, P.P. Pott: Design of a Balancing Device for Small High Speed Rotors. Proceedings Actuator Conference, Bremen, 2016, p. 596

Leave a Reply

Your email address will not be published. Required fields are marked *

Bot or Human? *