DRIVE CIRCUIT FOR MICRO GYRO

摘要

PURPOSE: A drive circuit for micro gyro is provided to maintain a desired size of reference vibration by tracking an operating point of a structure. CONSTITUTION: An inversion amplification portion(42) receives the frist control voltage. The first auxiliary amplification portion(43) receives an output of the inverse amplification portion(42) and the second control voltage and decides an operating point of the inverse amplification portion(42). A phase delay portion(44) is used for delaying a phase of the output of the inverse amplification portion(42). A non-inversion amplification portion(45) receives an output of the phase delay portion(44) and the second control voltage. An output of the non-inversion amplification portion(45) is connected with a structure. The second auxiliary amplification portion(46) receives an output of the non-inversion amplification portion(45) and the third control voltage and decides an operating point of the non-inversion amplification portion(45). An amplitude control portion(47) is used for controlling a size of a reference vibration of the structure.