Patent ID: 8038619

Claim:
An ultrasound system, comprising: a transmitter and receiver, both communicatively coupled to a transducer array of an ultrasound probe, the transducer array driven by a motor having a first coil and a second coil; a digital motor driver for controlling movement of the motor to drive the transducer array; a first differential amplifier receiving a sine wave control signal and a first feedback signal from the first coil of the motor, wherein the sine wave control signal is compared to the first feedback signal to control a voltage applied to the first coil; and a second differential amplifier receiving a cosine wave control signal and a second feedback signal from the second coil of the motor, wherein the cosine wave control signal is compared to the second feedback signal to control a voltage applied to the second coil, wherein the motor is driven by the voltages applied to the first coil and the second coil.