Koninklijke Philips Corporation N.v.

Ronald Antonie Hovenkamp

Mark Thomas Johnson

Achim Hilgers

Cornelis Petrus Hendriks

Daan Anton Van Den Ende

Franciscus Johannes Gerardus Hakkens

Arjen Van Der Horst

Godefridus Antonius Harks

Eduard Gerard Marie Pelssers

Gerardus Henricus Maria Gijsbers

Franciscus Reinier Antonius Van Der Linde

An actuator device has a temperature sensing means and a controller adapted to apply a high frequency AC signal to stimulate internal self-heating to thereby maintain a temperature of an actuator member of the device at a certain fixed temperature, this temperature being elevated with respect to an initial temperature of the actuator member. This ensures that thermal drift may be mitigated or eliminated by compensating for any changes in environmental temperature through raising or lowering the level of the heating signal.

Actuator device and method for limiting thermal drift

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Eindhoven, Netherlands

Ronald Antonie Hovenkamp