Voice Coil Actuators for Human-Robot Interaction An Exploration of the use of Electromagnetic Voice Coils as Compliant, Force- Controlled Actuators in Direct-Drive Robots for Visual and Tactile Interaction with Humans

The growing field of human-robot interaction (HRI) demands robots that move fluidly, gracefully, compliantly and safely. This paper describes our recent work in the design and evaluation of long-travel voice coil actuators (VCAs) for use in robots intended for interacting with people. The basic advantages and shortcomings of electromagnetic actuators are discussed and evaluated in the context of human-robot interaction, and are compared to alternative actuation technologies. Voice coil actuators have been chosen for their controllability, ease of implementation, geometry, compliance, biomimetic actuation characteristics, safety, quietness, and high power density. KeywordsVoice coil, actuator, human-robot interaction, HRI, tactile, compliance.