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|1. (WO2018087342) STIFFNESS CONTROL FOR ELECTROACTIVE ACTUATORS|
|Applicants:||KONINKLIJKE PHILIPS N.V.
|Inventors:||PELSSERS, Eduard, Gerard, Marie
HENDRIKS, Cornelis, Petrus
HAKKENS, Franciscus, Johannes, Gerardus
VAN DEN ENDE, Daan, Anton
JOHNSON, Mark, Thomas
|Title:||STIFFNESS CONTROL FOR ELECTROACTIVE ACTUATORS|
An actuator device is provided having a controllable stiffness profile, wherein an actuator member (12) comprises an electroactive polymer material (16) having light absorbing filler elements (20) embedded therein. The filler elements are adapted to absorb and convert incident light (26) to heat energy to therefore heat surrounding sections of the electroactive material. By selectively controlling an intensity level or spectral composition of a light source (24) directed at the actuator member, a specific degree and spread of heating can be achieved across the member and, as a result, a specific desired stiffness or flexibility profile can be realised across the actuator member.