Closed-loop control type accelerometer

The invention discloses a closed-loop control type accelerometer. The closed-loop control type accelerometer comprises a quartz vibrating-beam acceleration sensitive element and an actuator. The surface of a mass block of the quartz vibrating-beam acceleration sensitive element is opposite to the actuator and provided with an actuating electrode couple. The actuating electrode couple is used for changing the position of the mass block through adjusting the voltage which is applied between the actuating electrode couple. The actuator comprises a clamping beam, a board-shaped block, a supporting beam which connects the clamping beam and the board-shaped block, and an actuating electrode which is coated on the board-shaped block to produce actuating acting force. When acceleration is input, the mass block deviates from an equilibrium position and cause a change of vibrating frequency of a vibrating beam, the change is detected and the voltage between the corresponding actuating electrode couple is adjusted , and