B. Piezoelectric Actuator Driver Custom motor driver boards were developed [16], because commercially available hardware to drive piezoelectric mo-tors do not consider the MRI frequency interference problem, and it is generally not possible to drive the motors with highly specific arbitrary waveforms without interference to the scanner. The driver is a 4 channel high power arbitrary waveform generator designed to run piezoelectric actuators.
Waveform tables are loaded over USB or from SD card by a companion co-processor who is responsible for bootstrapping and provisioning the FPGA