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In this paper, we introduce a new design approach for self-sustained resonant acceleration, that uses an automatic gain control (AGC) to achieve a stabilized oscillation dynamics. Fundamental idea of this acceleration is to maintain uniform amplitude of oscillation. Through system modeling and loop transformation considering the envelope of oscillation, the controller is design to keep up uniform amplitude of oscillation under dynamic input acceleration. The simulation shows the feasibility of the proposed accelerometer design, which is applicable to control grade inertial sensing system in industrial and civil application fields.