ACTUATOR MODULE HAVING A MULTI-LAYER ACTUATOR ARRANGED IN A HOUSING AND A CONTINUOUSLY EXTREMELY LOW LEAKAGE CURRENT AT THE ACTUATOR SURFACE

摘要

The invention relates to actuator module (22) having a piezoceramic multilayer actuator (1) arranged in a casing (23). In order to avoid an increase in conductivity and hence rising leakage current at the actuator surface even after a long period of use, the invention proposes that the casing (23) is hermetically sealed, and a chamber (24) is arranged between the multilayer actuator (1) and the casing (23), which chamber is entirely or partially filled with a medium (21) that chemically transforms and/or binds water.