H2W Technologies Low-power voice coil actuator for cryogenic environments
The Model NCC14-78-830-1SM high-force, noncommutated dc linear actuator, otherwise known as a direct-drive voice coil actuator, is designed specifically for use in cryogenic environments. It can generate a continuous force of 92 lb (410 N) and a peak force of 294 lb (1,300 N) at a duty cycle of 10%). A moving mass of 4.4 lb (1.97 kg) allows for a maximum theoretical continuous acceleration of more than 20 Gs. Although the motor can generate large forces, this actuator was designed for a relatively high motor constant so that the required force can be generated with a relatively low power input.