Rotational motion sensing is important for the automotive and aviation sectors as well as for GPS navigation and health-monitoring systems. Today, gyroscopes based on microelectromechanical systems (MEMS) technology can be miniaturized to fit into smartphones with minimal power consumption.
proof mass is often forced to vibrate periodically along one direction using drive electrodes (which identify the drive mode). Once the device undergoes a rotational motion, . Sensing the amplitude of this displacement (through what is known as the sense mode) provides the angular rate of rotation. This kind of rotational motion sensing device is often referred to as a Coriolis vibratory gyroscope (CVG).