ACTUATOR ASSEMBLY, METHOD OF DRIVING AN ACTUATOR ASSEMBLY AND APPARATUS FOR DRIVING AN ACTUATOR ASSEMBLY

摘要

An actuator assembly includes a first part (2), a second part (3), the second part (3) including a guide (5,6) for guiding motion of the first part (2) relative to the second part (3), and means (10,11; 16-18; 20-22; 24-27) for generating a driving force between the first part (2) and the second part (3) along the guide(s) (5,6) in response to a driving current. The actuator assembly includes means (5,6,10; 16,18; 21,22; 24,25,27) for providing a force transverse to the guide (5,6), acting to hold at least one surface part of the first part against a surface of the guide (5,6).