Voice Coil Actuators (VCAs) are a class of electromagnetic devices that work on the principle of Lorentz forces to generate actuation within relatively short stroke lengths proportional to their own length. Their name derives from their common use in loudspeakers. VCAs are particularly useful in precision motion applications, for they are free from mechanical hysteresis, force or torque ripple, and backlash, due to their non-contact and continuous operation.
