Open-loop drive control system and control method of quartz piezoelectric gyroscope

Abstract

The invention provides an open-loop driving control system and method of a quartz piezoelectric gyroscope. The open-loop driving control system comprises a computer control module, a DDS (digital display scope) driving circuit module, a quartz piezoelectric gyroscope module and a detection circuit module, wherein the computer control module is used for setting a waveform, an amplitude value, a frequency and a phase of a driving signal of the DDS driving circuit module; the DDS driving circuit module is used for providing a four-phase driving signal to the quartz piezoelectric gyroscope module or used as an exciting source of the quartz piezoelectric gyroscope module and also used for providing a reference signal to the detection circuit module; the quartz piezoelectric gyroscope module is excited or driven under the signal provided by the DDS driving circuit module and generates a detection signal; the detection circuit module is used for processing the generated detection signal. The DDS driving circuit is used for providing the four-phase, stable, controllable, precise and effective driving signal to the quartz piezoelectric gyroscope and providing a high-quality reference signal to a detection circuit of the quartz piezoelectric gyroscope.

Description

technical field [0001] The present invention relates to the technical field of micro-electro-mechanical systems, in particular to an open-loop drive control system and control method for a quartz piezoelectric gyroscope. Background technique [0002] Micromechanical electronic system (MEMS) mainly includes several parts such as micro mechanism, micro sensor, micro actuator and corresponding processing circuit. MEMS has gradually become a high-tech frontier subject based on the latest achievements in the field of electronic communication and microelectronics technology by using various processing technologies, especially micro-processing technology. The micro gyroscope is the core device of the inertial system, occupies an important position in the micro-mechanical electronic system, and has a wide range of applications in aerospace, maritime navigation, military guidance and other civilian fields. [0003] The quartz piezoelectric gyroscope uses piezoelectric materials as t...

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Problems solved by technology

The drive circuit is divided into: oscillation / drive circuit, automatic gain control (automatic gain control, AGC circuit), phase shift circuit, synchronous detection circuit, amplitude detection circuit; however, only the composition structure of the drive circuit is given in the patent, and no For the specific implementation plan, there is no detailed implementation for each module; on the other hand, the driving method given in the patent is an analog circuit driving method, and there is no mention of a digital driving method

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