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Silicon micro-machined gyroscope digital driving closed loop control system

A technology of silicon micro-gyroscope and closed-loop control, which is applied in the general control system, control/regulation system, adaptive control, etc., can solve the problems of insufficient control precision, high noise, and limited range of temperature drift, and overcome the complex structure, Low noise, easy to realize the effect of monolithic integrated ASIC circuit

Active Publication Date: 2016-08-24
SUZHOU UNIV
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention provides a flexible, convenient, low-noise, portable, belt Temperature Compensated Silicon Micro Gyro Driven Closed-loop Control System

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  • Silicon micro-machined gyroscope digital driving closed loop control system

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Embodiment Construction

[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] see figure 1 , a silicon microgyroscope digital drive closed-loop control system described in a preferred embodiment of the present invention, the driving end and the sensitive end of the silicon microgyroscope are connected with a C / V conversion circuit that converts the capacitance signal into a digital signal, a low-pass Filter, amplitude amplifier and ADC converter; the digital signals of the driving end and the sensitive end are respectively connected to the FPGA-based driving closed-loop control circuit and temperature compensation circuit; the driving feedback signal of the driving closed-loop control circuit is transmitted to the driving electrode of the sil...

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Abstract

The present invention relates to a silicon micro-machined gyroscope digital driving closed loop control system with temperature compensation based on an FPGA. The silicon micro-machined gyroscope digital driving closed loop control system is characterized in that after the charge amplification, low-pass filtering, amplitude amplification and quantification operations are carried out on a silicon micro-machined gyroscope sensitive detection capacitance signal, the driving closed loop control and the temperature compensation functions are realized by the FPGA; a driving closed loop realizes an amplitude stabilization function by the root-mean-square (RMS) demodulation, the low-pass filtering and the PI control; a phase tracking function is realized by the Hilbert discrimination, the low-pass filtering, the PI control and a Cordic algorithm; a temperature compensation function of the angular velocity signal output is realized by a linear relationship of a resonant frequency and a temperature signal. The silicon micro-machined gyroscope digital driving closed loop control system of the present invention overcomes the problems, such as complicated analog circuit structure, large noise, temperature drift, etc., and has the advantages of being flexible, convenient and transplantable, being low in noise, being able to realize the temperature compensation, and being easy to realize a monolithic application specific integrated circuit (ASIC).

Description

technical field [0001] The invention relates to the field of silicon micro-gyroscope drive closed-loop, in particular to a silicon micro-gyroscope digital drive closed-loop control system with temperature compensation based on FPGA. Background technique [0002] Silicon microgyroscope is an inertial device used to measure angular velocity. It has the advantages of small size, light weight, low power consumption, strong overload resistance, easy integration and intelligence. Therefore, silicon microgyroscope can be widely used in automobile traction control System, driving stability system, camera stabilization system, aircraft stabilization system and military and other fields, related research has attracted much attention and attention at home and abroad. The research on silicon micro-gyroscopes began in the late 1980s. After more than 20 years of development, remarkable results have been achieved. At present, many companies or research institutions in China have provided m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G01C19/00G01C25/00
CPCG01C19/00G01C25/005G05B13/04
Inventor 徐大诚钱超盛斌程梦梦卢月娟
Owner SUZHOU UNIV
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