Acceleration signal amplifier with signal centering control technology

摘要

An acceleration amplifier, which is adapted to amplify useful signals, which are proportional to translation motion of a carrier, and to suppress noise, which is not proportional to translation motion of a carrier, in output signals from an acceleration producer, including a MEMS (MicroElectronicMechanicalSystem) acceleration sensor. Compared with a conventional amplifiers, a signal centering control means are utilized to further maximize the dynamic range of the acceleration measurements and minimize offset of the acceleration measurements from the acceleration producer. Furthermore, the acceleration producer and the amplifier of the present invention are used in a micro inertial measurement unit (IMU) to improve performance of the micro inertial measurement unit to form highly accurate, digital angular increments, velocity increments, position, velocity, attitude, and heading measurements of a carrier under dynamic environments.